diff --git a/CodeAnalysis/BannedSymbols.txt b/CodeAnalysis/BannedSymbols.txt
index 58f281a01d76..579301976bb0 100644
--- a/CodeAnalysis/BannedSymbols.txt
+++ b/CodeAnalysis/BannedSymbols.txt
@@ -18,9 +18,6 @@ M:Humanizer.InflectorExtensions.Pascalize(System.String);Humanizer's .Pascalize(
 M:Humanizer.InflectorExtensions.Camelize(System.String);Humanizer's .Camelize() extension method changes behaviour depending on CultureInfo.CurrentCulture. Use StringDehumanizeExtensions.ToCamelCase() instead.
 M:Humanizer.InflectorExtensions.Underscore(System.String);Humanizer's .Underscore() extension method changes behaviour depending on CultureInfo.CurrentCulture. Use StringDehumanizeExtensions.ToSnakeCase() instead.
 M:Humanizer.InflectorExtensions.Kebaberize(System.String);Humanizer's .Kebaberize() extension method changes behaviour depending on CultureInfo.CurrentCulture. Use StringDehumanizeExtensions.ToKebabCase() instead.
-M:osuTK.MathHelper.Clamp(System.Int32,System.Int32,System.Int32)~System.Int32;Use Math.Clamp() instead.
-M:osuTK.MathHelper.Clamp(System.Single,System.Single,System.Single)~System.Single;This osuTK helper has unsafe semantics when one of the bounds provided is NaN. Use Math.Clamp() instead.
-M:osuTK.MathHelper.Clamp(System.Double,System.Double,System.Double)~System.Double;This osuTK helper has unsafe semantics when one of the bounds provided is NaN. Use Math.Clamp() instead.
 M:TagLib.File.Create(System.String);TagLib's MIME type detection changes behaviour depending on CultureInfo.CurrentCulture. Use TagLibUtils.GetTagLibFile() instead.
 M:TagLib.File.Create(TagLib.File.IFileAbstraction);TagLib's MIME type detection changes behaviour depending on CultureInfo.CurrentCulture. Use TagLibUtils.GetTagLibFile() instead.
 M:TagLib.File.Create(System.String,TagLib.ReadStyle);TagLib's MIME type detection changes behaviour depending on CultureInfo.CurrentCulture. Use TagLibUtils.GetTagLibFile() instead.
diff --git a/CodeAnalysis/osu.globalconfig b/CodeAnalysis/osu.globalconfig
index 8012c31eca7c..2802da4373a9 100644
--- a/CodeAnalysis/osu.globalconfig
+++ b/CodeAnalysis/osu.globalconfig
@@ -17,6 +17,9 @@ dotnet_diagnostic.IDE0004.severity = warning
 # IDE0005: Remove unnecessary imports
 dotnet_diagnostic.IDE0005.severity = warning
 
+# IDE0032: Use auto property
+dotnet_diagnostic.IDE0032.severity = suggestion
+
 # IDE0034: Simplify default literal
 dotnet_diagnostic.IDE0034.severity = warning
 
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/TestSceneOsuGame.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/TestSceneOsuGame.cs
index ca73074789aa..b6a90412fab8 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/TestSceneOsuGame.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/TestSceneOsuGame.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.EmptyFreeform.Tests
 {
@@ -19,7 +18,7 @@ private void load()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
             };
 
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Beatmaps/EmptyFreeformBeatmapConverter.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Beatmaps/EmptyFreeformBeatmapConverter.cs
index a441438d80b6..7f0eaec3a1f3 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Beatmaps/EmptyFreeformBeatmapConverter.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Beatmaps/EmptyFreeformBeatmapConverter.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.EmptyFreeform.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.EmptyFreeform.Beatmaps
 {
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/EmptyFreeformRuleset.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/EmptyFreeformRuleset.cs
index 80c5a195d487..d630480340d8 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/EmptyFreeformRuleset.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/EmptyFreeformRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -16,8 +16,7 @@
 using osu.Game.Rulesets.EmptyFreeform.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.EmptyFreeform
 {
@@ -65,7 +64,7 @@ public Icon(char c)
                     new Circle
                     {
                         Size = new Vector2(20),
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                     },
                     new SpriteText
                     {
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/Drawables/DrawableEmptyFreeformHitObject.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/Drawables/DrawableEmptyFreeformHitObject.cs
index e53fe011579b..e3890c5192f6 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/Drawables/DrawableEmptyFreeformHitObject.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/Drawables/DrawableEmptyFreeformHitObject.cs
@@ -1,11 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.EmptyFreeform.Objects.Drawables
 {
@@ -40,7 +39,7 @@ protected override void UpdateHitStateTransforms(ArmedState state)
                     break;
 
                 case ArmedState.Miss:
-                    this.FadeColour(Color4.Red, duration);
+                    this.FadeColour(Colour4.Red, duration);
                     this.FadeOut(duration, Easing.InQuint).Expire();
                     break;
             }
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/EmptyFreeformHitObject.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/EmptyFreeformHitObject.cs
index 0699f5d0399c..01b3bbeecd3a 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/EmptyFreeformHitObject.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Objects/EmptyFreeformHitObject.cs
@@ -1,10 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.EmptyFreeform.Objects
 {
diff --git a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Replays/EmptyFreeformReplayFrame.cs b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Replays/EmptyFreeformReplayFrame.cs
index c6be5d6861bf..7d370d552925 100644
--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Replays/EmptyFreeformReplayFrame.cs
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform/Replays/EmptyFreeformReplayFrame.cs
@@ -3,8 +3,8 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.EmptyFreeform.Replays
 {
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
index c105e9c0408f..a648bba83954 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Pippidon.Tests
 {
@@ -19,7 +18,7 @@ private void load()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
             };
 
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Beatmaps/PippidonBeatmapConverter.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Beatmaps/PippidonBeatmapConverter.cs
index a2a478460399..4e2326ba25e8 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Beatmaps/PippidonBeatmapConverter.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Beatmaps/PippidonBeatmapConverter.cs
@@ -4,11 +4,11 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Pippidon.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Pippidon.Beatmaps
 {
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
index b1be25727f96..cde1d4f578e6 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -9,8 +10,6 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Audio;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Pippidon.Objects.Drawables
 {
@@ -73,7 +72,7 @@ protected override void UpdateHitStateTransforms(ArmedState state)
 
                     this.ScaleTo(0.8f, duration, Easing.OutQuint);
                     this.MoveToOffset(new Vector2(0, 10), duration, Easing.In);
-                    this.FadeColour(Color4.Red.Opacity(0.5f), duration / 2, Easing.OutQuint).Then().FadeOut(duration / 2, Easing.InQuint).Expire();
+                    this.FadeColour(Colour4.Red.Opacity(0.5f), duration / 2, Easing.OutQuint).Then().FadeOut(duration / 2, Easing.InQuint).Expire();
                     break;
             }
         }
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/PippidonHitObject.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/PippidonHitObject.cs
index f938d26b2646..0411f97d7ec3 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/PippidonHitObject.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Objects/PippidonHitObject.cs
@@ -1,10 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Pippidon.Objects
 {
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Replays/PippidonReplayFrame.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Replays/PippidonReplayFrame.cs
index c434b62257a6..4f038cc3d8ab 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Replays/PippidonReplayFrame.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/Replays/PippidonReplayFrame.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Replays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Pippidon.Replays
 {
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonCursorContainer.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonCursorContainer.cs
index 445b8643b29e..d0e5d4bb2a81 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonCursorContainer.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonCursorContainer.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Pippidon.UI
 {
diff --git a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfieldAdjustmentContainer.cs b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfieldAdjustmentContainer.cs
index b46e795bbc66..3e405ce03107 100644
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfieldAdjustmentContainer.cs
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfieldAdjustmentContainer.cs
@@ -1,9 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Pippidon.UI
 {
diff --git a/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/TestSceneOsuGame.cs b/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/TestSceneOsuGame.cs
index a9a3c2eb5b69..f1a95d18541f 100644
--- a/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/TestSceneOsuGame.cs
+++ b/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/TestSceneOsuGame.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.EmptyScrolling.Tests
 {
@@ -19,7 +18,7 @@ private void load()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
             };
 
diff --git a/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling/Objects/Drawables/DrawableEmptyScrollingHitObject.cs b/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling/Objects/Drawables/DrawableEmptyScrollingHitObject.cs
index adcbd36485cb..ddb6a447dcb8 100644
--- a/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling/Objects/Drawables/DrawableEmptyScrollingHitObject.cs
+++ b/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling/Objects/Drawables/DrawableEmptyScrollingHitObject.cs
@@ -1,10 +1,9 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.EmptyScrolling.Objects.Drawables
 {
@@ -38,7 +37,7 @@ protected override void UpdateHitStateTransforms(ArmedState state)
 
                 case ArmedState.Miss:
 
-                    this.FadeColour(Color4.Red, duration);
+                    this.FadeColour(Colour4.Red, duration);
                     this.FadeOut(duration, Easing.InQuint).Expire();
                     break;
             }
diff --git a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
index c105e9c0408f..a648bba83954 100644
--- a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
+++ b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/TestSceneOsuGame.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Pippidon.Tests
 {
@@ -19,7 +18,7 @@ private void load()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
             };
 
diff --git a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
index 3ad636a601a6..e068e95aa644 100644
--- a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
+++ b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/Objects/Drawables/DrawablePippidonHitObject.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -10,8 +10,7 @@
 using osu.Game.Audio;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Pippidon.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Pippidon.Objects.Drawables
 {
@@ -70,7 +69,7 @@ protected override void UpdateHitStateTransforms(ArmedState state)
 
                     this.ScaleTo(0.8f, duration, Easing.OutQuint);
                     this.MoveToOffset(new Vector2(0, 10), duration, Easing.In);
-                    this.FadeColour(Color4.Red, duration / 2, Easing.OutQuint).Then().FadeOut(duration / 2, Easing.InQuint).Expire();
+                    this.FadeColour(Colour4.Red, duration / 2, Easing.OutQuint).Then().FadeOut(duration / 2, Easing.InQuint).Expire();
                     break;
             }
         }
diff --git a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonCharacter.cs b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonCharacter.cs
index 33d349da624a..485983373e64 100644
--- a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonCharacter.cs
+++ b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonCharacter.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Pippidon.UI
 {
diff --git a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfield.cs b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfield.cs
index a90326e93589..ac93c66c3bc4 100644
--- a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfield.cs
+++ b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon/UI/PippidonPlayfield.cs
@@ -11,7 +11,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Pippidon.UI
 {
@@ -107,7 +106,7 @@ public Lane()
                     {
                         new Box
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.Both,
                             Anchor = Anchor.CentreLeft,
                             Origin = Anchor.CentreLeft,
diff --git a/osu.Android.props b/osu.Android.props
index e05709d554b0..b38e5b7eea5c 100644
--- a/osu.Android.props
+++ b/osu.Android.props
@@ -1,4 +1,4 @@
-<Project>
+<Project>
   <PropertyGroup>
     <SupportedOSPlatformVersion>33.0</SupportedOSPlatformVersion>
     <!-- arm64-v8a only.  Modern Android devices are 99%+ arm64; 32-bit arm32 (armeabi-v7a)
@@ -52,7 +52,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.511.1" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.517.1" />
     <!-- `ppy.osu.Framework.NativeLibs` is a transitive dependency of `ppy.osu.Framework`
          that ships desktop-only natives (Linux/macOS/Windows) under `runtimes/<rid>/native/`
          — including a bare Linux `libbass.so`/`libbass_fx.so`/`libbassmix.so` for linux-arm64.
diff --git a/osu.Android/Input/AndroidKeyboardHandler.cs b/osu.Android/Input/AndroidKeyboardHandler.cs
index 72f077073872..31d3279a00c6 100644
--- a/osu.Android/Input/AndroidKeyboardHandler.cs
+++ b/osu.Android/Input/AndroidKeyboardHandler.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Input.Handlers;
 using osu.Framework.Input.StateChanges;
 using osu.Framework.Platform;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Android.Input
 {
diff --git a/osu.Android/Input/AndroidMouseHandler.cs b/osu.Android/Input/AndroidMouseHandler.cs
index 1f3570ddc373..0a91e1277c55 100644
--- a/osu.Android/Input/AndroidMouseHandler.cs
+++ b/osu.Android/Input/AndroidMouseHandler.cs
@@ -2,26 +2,58 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Runtime.CompilerServices;
+using System.Numerics;
 using Android.Views;
+using osu.Framework.Bindables;
 using osu.Framework.Input.Handlers;
 using osu.Framework.Input.StateChanges;
 using osu.Framework.Platform;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Android.Input
 {
-    public class AndroidMouseHandler : InputHandler
+    public class AndroidMouseHandler : InputHandler, IHasCursorSensitivity
     {
         public override string Description => "Mouse (Low Latency)";
         public override bool IsActive => Enabled.Value;
 
+        // Android AXIS_RELATIVE_X / AXIS_RELATIVE_Y (API 12 / added with Android Honeycomb 3.0).
+        // These report the physical displacement of the mouse since the previous event and are
+        // the correct values to scale for sensitivity adjustment. Using int-cast avoids a
+        // dependency on an enum value that may not be present in older .NET Android binding
+        // versions while remaining readable.
+        private const Axis axis_relative_x = (Axis)27;
+        private const Axis axis_relative_y = (Axis)28;
+
+        /// <summary>
+        /// When <c>true</c> the handler emits <see cref="MousePositionRelativeInput"/> scaled
+        /// by <see cref="Sensitivity"/> (identical semantics to the desktop <c>MouseHandler</c>
+        /// "high-precision" / raw-input mode). When <c>false</c> (the default) it emits
+        /// <see cref="MousePositionAbsoluteInput"/> from the <c>MotionEvent</c> window-space
+        /// coordinates — the mode that has been working reliably for Android mice.
+        /// </summary>
+        public BindableBool UseRelativeMode { get; } = new BindableBool(false)
+        {
+            Description = "Allows for sensitivity adjustment and tighter control of input",
+        };
+
+        public BindableDouble Sensitivity { get; } = new BindableDouble(1)
+        {
+            MinValue = 0.1,
+            MaxValue = 10,
+            Precision = 0.01,
+        };
+
         private bool lastLeft;
         private bool lastRight;
         private bool lastMiddle;
         private bool lastBack;
         private bool lastForward;
 
+        // Cached sensitivity value for use on the input dispatch thread.
+        // Avoids a BindableDouble read per MotionEvent.
+        private volatile float cachedSensitivity = 1f;
+
         public AndroidMouseHandler()
         {
             Enabled.Default = true;
@@ -33,6 +65,8 @@ public override bool Initialize(GameHost host)
             if (!base.Initialize(host))
                 return false;
 
+            Sensitivity.BindValueChanged(v => cachedSensitivity = (float)v.NewValue, true);
+
             return true;
         }
 
@@ -65,10 +99,31 @@ private void handlePointer(MotionEvent e, int historyIndex)
             const int pointer_index = 0;
             if (e.PointerCount <= pointer_index) return;
 
-            float x = historyIndex < 0 ? e.GetX(pointer_index) : e.GetHistoricalX(pointer_index, historyIndex);
-            float y = historyIndex < 0 ? e.GetY(pointer_index) : e.GetHistoricalY(pointer_index, historyIndex);
+            if (UseRelativeMode.Value)
+            {
+                // Relative mode: emit delta scaled by sensitivity so the user can tune cursor speed.
+                // Android delivers AXIS_RELATIVE_X/Y per-event (and per-history-slot).
+                // A zero delta means no physical movement — skip to avoid flooding the input queue.
+                float relX = historyIndex < 0
+                    ? e.GetAxisValue(axis_relative_x, pointer_index)
+                    : e.GetHistoricalAxisValue(axis_relative_x, pointer_index, historyIndex);
+                float relY = historyIndex < 0
+                    ? e.GetAxisValue(axis_relative_y, pointer_index)
+                    : e.GetHistoricalAxisValue(axis_relative_y, pointer_index, historyIndex);
+
+                if (relX == 0f && relY == 0f) return;
+
+                float sens = cachedSensitivity;
+                PendingInputs.Enqueue(new MousePositionRelativeInput { Delta = new Vector2(relX * sens, relY * sens) });
+            }
+            else
+            {
+                // Absolute mode (default): use the window-space coordinates directly.
+                float x = historyIndex < 0 ? e.GetX(pointer_index) : e.GetHistoricalX(pointer_index, historyIndex);
+                float y = historyIndex < 0 ? e.GetY(pointer_index) : e.GetHistoricalY(pointer_index, historyIndex);
 
-            PendingInputs.Enqueue(new MousePositionAbsoluteInput { Position = new Vector2(x, y) });
+                PendingInputs.Enqueue(new MousePositionAbsoluteInput { Position = new Vector2(x, y) });
+            }
 
             // Drive button state purely from MotionEvent.ButtonState — the bitmask is
             // already authoritative for which physical buttons are currently held, across
diff --git a/osu.Android/Input/AndroidMouseSettings.cs b/osu.Android/Input/AndroidMouseSettings.cs
new file mode 100644
index 000000000000..d51ab6679b01
--- /dev/null
+++ b/osu.Android/Input/AndroidMouseSettings.cs
@@ -0,0 +1,114 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Localisation;
+using osu.Game.Configuration;
+using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Input;
+using osu.Game.Localisation;
+using osu.Game.Overlays.Settings;
+using osu.Game.Overlays.Settings.Sections;
+using osu.Game.Overlays.Settings.Sections.Input;
+
+namespace osu.Android.Input
+{
+    /// <summary>
+    /// Settings subsection for <see cref="AndroidMouseHandler"/>.
+    /// Mirrors the options from <c>MouseSettings</c> that are relevant to an Android
+    /// hardware mouse: high-precision (relative) mode, cursor sensitivity, confine mode,
+    /// scroll-wheel volume adjust, and gameplay click disable.
+    /// </summary>
+    public partial class AndroidMouseSettings : InputSubsection
+    {
+        private readonly AndroidMouseHandler mouseHandler;
+
+        protected override LocalisableString Header => MouseSettingsStrings.Mouse;
+
+        private Bindable<double> handlerSensitivity = null!;
+        private Bindable<double> localSensitivity = null!;
+        private Bindable<bool> relativeMode = null!;
+
+        public AndroidMouseSettings(AndroidMouseHandler handler)
+            : base(handler)
+        {
+            mouseHandler = handler;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuConfigManager osuConfig)
+        {
+            handlerSensitivity = mouseHandler.Sensitivity.GetBoundCopy();
+            localSensitivity = handlerSensitivity.GetUnboundCopy();
+            relativeMode = mouseHandler.UseRelativeMode.GetBoundCopy();
+
+            AddRange(new Drawable[]
+            {
+                new SettingsItemV2(new FormCheckBox
+                {
+                    Caption = MouseSettingsStrings.HighPrecisionMouse,
+                    HintText = MouseSettingsStrings.HighPrecisionMouseTooltip,
+                    Current = relativeMode,
+                })
+                {
+                    Keywords = new[] { @"raw", @"input", @"relative", @"cursor", "sensitivity", "speed", "velocity" },
+                },
+                new SettingsItemV2(new FormSliderBar<double>
+                {
+                    Caption = MouseSettingsStrings.CursorSensitivity,
+                    Current = localSensitivity,
+                    KeyboardStep = 0.01f,
+                    TransferValueOnCommit = true,
+                    LabelFormat = v => $@"{v:0.##}x",
+                    TooltipFormat = v => localSensitivity.Disabled ? MouseSettingsStrings.EnableHighPrecisionForSensitivityAdjust : $@"{v:0.##}x",
+                })
+                {
+                    Keywords = new[] { "speed", "velocity" },
+                },
+                new SettingsItemV2(new FormEnumDropdown<OsuConfineMouseMode>
+                {
+                    Caption = MouseSettingsStrings.ConfineMouseMode,
+                    Current = osuConfig.GetBindable<OsuConfineMouseMode>(OsuSetting.ConfineMouseMode),
+                }),
+                new SettingsItemV2(new FormCheckBox
+                {
+                    Caption = MouseSettingsStrings.DisableMouseWheelVolumeAdjust,
+                    HintText = MouseSettingsStrings.DisableMouseWheelVolumeAdjustTooltip,
+                    Current = osuConfig.GetBindable<bool>(OsuSetting.MouseDisableWheel),
+                }),
+                new SettingsItemV2(new FormCheckBox
+                {
+                    Caption = MouseSettingsStrings.DisableClicksDuringGameplay,
+                    Current = osuConfig.GetBindable<bool>(OsuSetting.MouseDisableButtons),
+                }),
+            });
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            // Sensitivity slider is only meaningful in relative (high-precision) mode.
+            relativeMode.BindValueChanged(relative => localSensitivity.Disabled = !relative.NewValue, true);
+
+            handlerSensitivity.BindValueChanged(val =>
+            {
+                bool disabled = localSensitivity.Disabled;
+
+                localSensitivity.Disabled = false;
+                localSensitivity.Value = val.NewValue;
+                localSensitivity.Disabled = disabled;
+            }, true);
+
+            localSensitivity.BindValueChanged(val => handlerSensitivity.Value = val.NewValue);
+        }
+
+        public override IEnumerable<LocalisableString> FilterTerms => new LocalisableString[]
+        {
+            @"mouse", @"cursor", @"sensitivity", @"speed", @"relative", @"high precision", @"confine", @"scroll", @"wheel", @"click",
+        };
+    }
+}
diff --git a/osu.Android/Input/AndroidStylusHandler.cs b/osu.Android/Input/AndroidStylusHandler.cs
index 81d936c172bf..786914a720d0 100644
--- a/osu.Android/Input/AndroidStylusHandler.cs
+++ b/osu.Android/Input/AndroidStylusHandler.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Runtime.CompilerServices;
+using System.Numerics;
 using Android.Views;
 using osu.Framework.Bindables;
 using osu.Framework.Input;
@@ -11,8 +12,6 @@
 using osu.Framework.Input.StateChanges;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Android.Input
 {
diff --git a/osu.Android/OsuGameActivity.cs b/osu.Android/OsuGameActivity.cs
index 9c2720e3b8d5..96b61fda9042 100644
--- a/osu.Android/OsuGameActivity.cs
+++ b/osu.Android/OsuGameActivity.cs
@@ -28,7 +28,10 @@ namespace osu.Android
     // at runtime in OnCreate) so Android creates the activity in landscape from the very first
     // frame — the SurfaceView is sized correctly on creation and there is no orientation-change
     // event during startup.
-    [Activity(ResizeableActivity = true, ScreenOrientation = ScreenOrientation.Landscape, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize | ConfigChanges.UiMode | ConfigChanges.SmallestScreenSize | ConfigChanges.ScreenLayout | ConfigChanges.ColorMode | ConfigChanges.Density | ConfigChanges.Touchscreen | ConfigChanges.Keyboard | ConfigChanges.KeyboardHidden | ConfigChanges.Navigation, Exported = true, LaunchMode = DEFAULT_LAUNCH_MODE, MainLauncher = true)]
+    // SensorLandscape (rather than plain Landscape) allows the device to rotate between both
+    // landscape sides (normal and reverse/upside-down landscape) based on the physical sensor,
+    // so the user can hold the phone with the home button on either side.
+    [Activity(ResizeableActivity = true, ScreenOrientation = ScreenOrientation.SensorLandscape, ConfigurationChanges =ConfigChanges.Orientation | ConfigChanges.ScreenSize | ConfigChanges.UiMode | ConfigChanges.SmallestScreenSize | ConfigChanges.ScreenLayout | ConfigChanges.ColorMode | ConfigChanges.Density | ConfigChanges.Touchscreen | ConfigChanges.Keyboard | ConfigChanges.KeyboardHidden | ConfigChanges.Navigation, Exported = true, LaunchMode = DEFAULT_LAUNCH_MODE, MainLauncher = true)]
     [IntentFilter(new[] { Intent.ActionView }, Categories = new[] { Intent.CategoryDefault }, DataScheme = "content", DataPathPattern = ".*\\.osz", DataHost = "*", DataMimeType = "*/*")]
     [IntentFilter(new[] { Intent.ActionView }, Categories = new[] { Intent.CategoryDefault }, DataScheme = "content", DataPathPattern = ".*\\.osk", DataHost = "*", DataMimeType = "*/*")]
     [IntentFilter(new[] { Intent.ActionView }, Categories = new[] { Intent.CategoryDefault }, DataScheme = "content", DataPathPattern = ".*\\.osr", DataHost = "*", DataMimeType = "*/*")]
@@ -416,17 +419,7 @@ protected override void OnCreate(Bundle? savedInstanceState)
                     // Setting it only on DecorView is not enough in DeX mode: Android
                     // uses the innermost view's pointer icon when the cursor is over
                     // that view, so the SurfaceView's default arrow would still show.
-                    try
-                    {
-                        var surface = GetSurface();
-
-                        if (surface != null)
-                            surface.PointerIcon = PointerIcon.GetSystemIcon(this, PointerIconType.Null);
-                    }
-                    catch (Exception e)
-                    {
-                        Logger.Log($"[osu!] Failed to hide SurfaceView pointer icon: {e.Message}", LoggingTarget.Input);
-                    }
+                    applyNullPointerIconToSurfaceView();
                 }
                 catch (Exception e)
                 {
@@ -472,23 +465,13 @@ protected override void OnCreate(Bundle? savedInstanceState)
                 catch { /* best-effort; will also be requested per-event in dispatch methods */ }
 
                 // Hide the system pointer icon to prevent double cursors in DeX or with mouse.
-                try
-                {
-                    var decorView = Window.DecorView;
-
-                    if (decorView != null)
-                        decorView.PointerIcon = PointerIcon.GetSystemIcon(this, PointerIconType.Null);
-                }
-                catch (Exception e)
-                {
-                    Logger.Log($"[osu!] Failed to hide system pointer icon: {e.Message}", LoggingTarget.Input);
-                }
+                applyNullPointerIconToDecorView();
             }
 
             if (Resources?.Configuration != null)
                 IsTablet = Resources.Configuration.SmallestScreenWidthDp >= 600;
 
-            // Phones: manifest already requests Landscape; do not re-assign at runtime —
+            // Phones: manifest already requests SensorLandscape; do not re-assign at runtime —
             // a no-op assignment is harmless on most devices but a redundant RequestedOrientation
             // write can still nudge the SurfaceView into a recreate cycle on some OEMs while the
             // SDL draw thread is mid-Vulkan-init. Tablets and DeX get a more permissive policy:
@@ -500,7 +483,7 @@ protected override void OnCreate(Bundle? savedInstanceState)
             if (IsTablet || IsDeX)
                 RequestedOrientation = DefaultOrientation = ScreenOrientation.FullUser;
             else
-                DefaultOrientation = ScreenOrientation.Landscape;
+                DefaultOrientation = ScreenOrientation.SensorLandscape;
 
             foreach (string asm in new[] { "osu.Game.Rulesets.Osu", "osu.Game.Rulesets.Taiko", "osu.Game.Rulesets.Catch", "osu.Game.Rulesets.Mania" })
             {
@@ -1001,6 +984,71 @@ public override void OnConfigurationChanged(global::Android.Content.Res.Configur
             {
                 (game as OsuGameAndroid)?.OnDeXConnected();
             }
+
+            // Re-apply the null pointer icon whenever the display configuration changes
+            // (DeX connect/disconnect, orientation, external monitor change). Android can
+            // reset the pointer icon to its default when the window context is updated for
+            // the new display, causing the system cursor to reappear alongside osu!'s
+            // in-game cursor.
+            applyNullPointerIcon();
+        }
+
+        public override void OnWindowFocusChanged(bool hasFocus)
+        {
+            base.OnWindowFocusChanged(hasFocus);
+
+            // Re-apply the null pointer icon every time the window regains focus.
+            // In DeX/freeform mode, Android can reset the pointer icon to its default
+            // arrow when the window transitions between focused and unfocused states
+            // (e.g. task-switching on the external display, lock/unlock, Game Booster
+            // overlay dismiss). Without this, the system cursor reappears on top of
+            // osu!'s in-game cursor after any focus-change event.
+            if (hasFocus)
+                applyNullPointerIcon();
+        }
+
+        /// <summary>
+        /// Hides the system pointer icon on both the DecorView and the SDL SurfaceView
+        /// to prevent a double-cursor situation in DeX mode and with hardware mice.
+        /// Must be called on the UI thread.
+        /// </summary>
+        private void applyNullPointerIcon()
+        {
+            applyNullPointerIconToDecorView();
+            applyNullPointerIconToSurfaceView();
+        }
+
+        private void applyNullPointerIconToDecorView()
+        {
+            try
+            {
+                var decorView = Window?.DecorView;
+
+                if (decorView != null)
+                    decorView.PointerIcon = PointerIcon.GetSystemIcon(this, PointerIconType.Null);
+            }
+            catch (Exception e)
+            {
+                Logger.Log($"[osu!] Failed to hide system pointer icon: {e.Message}", LoggingTarget.Input);
+            }
+        }
+
+        private void applyNullPointerIconToSurfaceView()
+        {
+            // Setting it only on DecorView is not enough in DeX mode: Android
+            // uses the innermost view's pointer icon when the cursor is over
+            // that view, so the SurfaceView's default arrow would still show.
+            try
+            {
+                var surface = GetSurface();
+
+                if (surface != null)
+                    surface.PointerIcon = PointerIcon.GetSystemIcon(this, PointerIconType.Null);
+            }
+            catch (Exception e)
+            {
+                Logger.Log($"[osu!] Failed to hide SurfaceView pointer icon: {e.Message}", LoggingTarget.Input);
+            }
         }
 
         private void updateDeXStatus(global::Android.Content.Res.Configuration? config)
diff --git a/osu.Android/OsuGameAndroid.cs b/osu.Android/OsuGameAndroid.cs
index 3d72adc2f725..d05c183a1d5e 100644
--- a/osu.Android/OsuGameAndroid.cs
+++ b/osu.Android/OsuGameAndroid.cs
@@ -10,6 +10,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Threading;
+using System.Numerics;
 using Android.App;
 using Android.Content.PM;
 using Android.OS;
@@ -33,7 +34,6 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Screens;
 using osu.Game.Screens.Play;
-using osuTK;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Mixing;
 using osu.Framework.Threading;
@@ -2623,13 +2623,15 @@ private void registerAndroidInputHandlers(GameHost host)
         /// </para>
         ///
         /// <para>
-        /// As a final defensive guard on phones, the resolved bounds are normalised to landscape
-        /// (<c>max(W,H) × min(W,H)</c>) since the activity is landscape-locked there —
-        /// this neutralises the residual case where an OEM still hands back portrait
-        /// bounds for the current metrics on certain Android skins. Tablets and DeX are
-        /// excluded because they run in <see cref="ScreenOrientation.FullUser"/> / external
-        /// display orientation, where forcing landscape makes portrait tablet S Pen
-        /// coordinates divide by the wrong axis and pins the pointer near the origin.
+        /// As a final defensive guard, the resolved bounds are normalised to landscape
+        /// (<c>max(W,H) × min(W,H)</c>) for phones (SensorLandscape-locked) and for DeX mode.
+        /// In DeX mode the game window lives on a landscape external monitor, so any portrait
+        /// dimensions returned by <c>CurrentWindowMetrics</c> on certain Samsung firmware
+        /// builds are corrected here — otherwise the tablet-area panel shows a portrait
+        /// digitiser and S Pen coordinates map incorrectly. Tablets NOT in DeX are excluded:
+        /// they run in <see cref="ScreenOrientation.FullUser"/> and can genuinely be in
+        /// portrait orientation; forcing landscape there swaps the axes and pins the pointer
+        /// near the screen origin.
         /// </para>
         /// </summary>
         private void applyStylusDisplaySize(AndroidStylusHandler handler)
@@ -2699,14 +2701,22 @@ private void applyStylusDisplaySize(AndroidStylusHandler handler)
                 if (width <= 0 || height <= 0)
                     return;
 
-                // Canonicalise to landscape only when the activity is actually landscape-locked
-                // (see [Activity(ScreenOrientation = ScreenOrientation.Landscape)] on
-                // OsuGameActivity). Tablets / DeX run in FullUser / external-display
-                // orientation, so preserve the current window metrics exactly there.
+                // Canonicalise to landscape:
+                //   • Phones (SensorLandscape-locked): always normalize to landscape so portrait
+                //     readings from MaximumWindowMetrics / certain OEM skins are corrected.
+                //   • DeX mode: the osu! window lives on a landscape external monitor; S Pen
+                //     MotionEvent coordinates are delivered in the window coordinate space of
+                //     that external display (landscape). If CurrentWindowMetrics returns portrait
+                //     dimensions for a DeX window on some Samsung firmware builds, forcing
+                //     max×min here corrects the digitiser orientation so the tablet-area panel
+                //     and coordinate mapping stay landscape-aligned.
+                //   • Tablets NOT in DeX: run in FullUser, can genuinely be portrait. Do NOT
+                //     normalize — forcing landscape on a portrait tablet swaps the axes and
+                //     pins the S Pen cursor near the screen origin.
                 int w = width;
                 int h = height;
 
-                if (!gameActivity.IsTablet && !gameActivity.IsDeX)
+                if (!gameActivity.IsTablet || gameActivity.IsDeX)
                 {
                     w = Math.Max(width, height);
                     h = Math.Min(width, height);
@@ -2916,6 +2926,9 @@ public override osu.Game.Overlays.Settings.SettingsSubsection CreateSettingsSubs
             if (handler is AndroidStylusHandler stylus)
                 return new AndroidStylusSettings(stylus);
 
+            if (handler is AndroidMouseHandler mouse)
+                return new AndroidMouseSettings(mouse);
+
             return base.CreateSettingsSubsectionFor(handler);
         }
     }
diff --git a/osu.Game.Benchmarks/BenchmarkGeometryUtils.cs b/osu.Game.Benchmarks/BenchmarkGeometryUtils.cs
index 2ab4d3369a3c..6e7ac490d501 100644
--- a/osu.Game.Benchmarks/BenchmarkGeometryUtils.cs
+++ b/osu.Game.Benchmarks/BenchmarkGeometryUtils.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using BenchmarkDotNet.Attributes;
 using osu.Framework.Utils;
 using osu.Game.Utils;
-using osuTK;
 
 namespace osu.Game.Benchmarks
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/CatchSkinColourDecodingTest.cs b/osu.Game.Rulesets.Catch.Tests/CatchSkinColourDecodingTest.cs
index 3a0dea3e8ce5..06628a8b7ae6 100644
--- a/osu.Game.Rulesets.Catch.Tests/CatchSkinColourDecodingTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/CatchSkinColourDecodingTest.cs
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Rulesets.Catch.Skinning.Legacy;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -22,9 +22,9 @@ public void TestCatchSkinColourDecoding()
             var skinSource = new SkinProvidingContainer(rawSkin);
             var skin = new CatchLegacySkinTransformer(skinSource);
 
-            ClassicAssert.AreEqual(new Color4(232, 185, 35, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value);
-            ClassicAssert.AreEqual(new Color4(232, 74, 35, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashAfterImage)?.Value);
-            ClassicAssert.AreEqual(new Color4(0, 255, 255, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit)?.Value);
+            ClassicAssert.AreEqual(new Colour4(232, 185, 35, 255), skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDash)?.Value);
+            ClassicAssert.AreEqual(new Colour4(232, 74, 35, 255), skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDashAfterImage)?.Value);
+            ClassicAssert.AreEqual(new Colour4(0, 255, 255, 255), skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDashFruit)?.Value);
         }
 
         private class TestLegacySkin : LegacySkin
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs b/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs
index a5713feda3ee..d6bcd170f8c9 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +16,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs b/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs
index 6dfc74e75ccc..002283021291 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs
index 296d34d628e2..a415a4996ad1 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchDistanceSnapGrid.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchDistanceSnapGrid.cs
index 8052b8e3f760..67e7228c855e 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchDistanceSnapGrid.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchDistanceSnapGrid.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchEditorSaving.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchEditorSaving.cs
index 53ef24e02cc3..9d6b9dbcc394 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchEditorSaving.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchEditorSaving.cs
@@ -2,14 +2,14 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchReverseSelection.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchReverseSelection.cs
index 36a0e3388e1d..d9cfd3ec606f 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchReverseSelection.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneCatchReverseSelection.cs
@@ -3,13 +3,13 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs
index 80cd948e265a..2d8901a62b0b 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs
index 8bd60078c62f..0c141dc9feb4 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs
index 278c7b1bde0d..2e66d9bad4fc 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Timing;
@@ -12,8 +13,7 @@
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs b/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs
index c23a4a607ea1..3ff2a016bb70 100644
--- a/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs
@@ -4,11 +4,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs b/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs
index fbbfee6b6031..217571f33048 100644
--- a/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModPerfect.cs b/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModPerfect.cs
index 7d539f91e437..ed4565d89fad 100644
--- a/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModPerfect.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModPerfect.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Rulesets.Catch.Mods;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModRelax.cs b/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModRelax.cs
index 92f79601833e..c6867536c457 100644
--- a/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModRelax.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModRelax.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneAutoJuiceStream.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneAutoJuiceStream.cs
index 202f0106804f..23f743a24e2d 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneAutoJuiceStream.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneAutoJuiceStream.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchModHidden.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchModHidden.cs
index 9365659f79e8..896ae9c71fe3 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchModHidden.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchModHidden.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchPlayerLegacySkin.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchPlayerLegacySkin.cs
index 792caf6de69e..52e974669d1d 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchPlayerLegacySkin.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchPlayerLegacySkin.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchReplayHandling.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchReplayHandling.cs
index 1721703e48da..500d680d3da3 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchReplayHandling.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchReplayHandling.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs
index f381c12abf30..30ed5b1605e5 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -22,7 +23,6 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneComboCounter.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneComboCounter.cs
index 391297a252f9..11b4e2a9189f 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneComboCounter.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneComboCounter.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -14,8 +15,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -23,7 +22,7 @@ public partial class TestSceneComboCounter : CatchSkinnableTestScene
     {
         private ScoreProcessor scoreProcessor = null!;
 
-        private Color4 judgedObjectColour = Color4.White;
+        private Colour4 judgedObjectColour = Colour4.White;
 
         private readonly Bindable<bool> showHud = new Bindable<bool>(true);
 
@@ -59,7 +58,7 @@ public void TestCatchComboCounter()
 
             AddStep("randomize judged object colour", () =>
             {
-                judgedObjectColour = new Color4(
+                judgedObjectColour = new Colour4(
                     RNG.NextSingle(1f),
                     RNG.NextSingle(1f),
                     RNG.NextSingle(1f),
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs
index 9c5cd6820107..b786856b7c28 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneFruitRandomness.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneFruitRandomness.cs
index 8e7f77285c02..76487df63678 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneFruitRandomness.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneFruitRandomness.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -41,7 +41,7 @@ public void TestFruitRandomness()
             float fruitRotation = 0;
             float bananaRotation = 0;
             Vector2 bananaSize = new Vector2();
-            Color4 bananaColour = new Color4();
+            Colour4 bananaColour = new Colour4();
 
             AddStep("Initialize start time", () =>
             {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs
index 3f26647f86aa..67a5dd3db389 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs
index 78e2e3f5a06f..7a5f1105c518 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -19,8 +20,6 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -42,7 +41,7 @@ public void TestCustomCatcherColour()
         {
             var skin = new TestSkin
             {
-                HyperDashColour = Color4.Goldenrod
+                HyperDashColour = Colour4.Goldenrod
             };
 
             checkHyperDashCatcherColour(skin, skin.HyperDashColour);
@@ -53,7 +52,7 @@ public void TestCustomAfterImageColour()
         {
             var skin = new TestSkin
             {
-                HyperDashAfterImageColour = Color4.Lime
+                HyperDashAfterImageColour = Colour4.Lime
             };
 
             checkHyperDashCatcherColour(skin, Catcher.DEFAULT_HYPER_DASH_COLOUR, skin.HyperDashAfterImageColour);
@@ -64,8 +63,8 @@ public void TestCustomAfterImageColourPriority()
         {
             var skin = new TestSkin
             {
-                HyperDashColour = Color4.Goldenrod,
-                HyperDashAfterImageColour = Color4.Lime
+                HyperDashColour = Colour4.Goldenrod,
+                HyperDashAfterImageColour = Colour4.Lime
             };
 
             checkHyperDashCatcherColour(skin, skin.HyperDashColour, skin.HyperDashAfterImageColour);
@@ -84,7 +83,7 @@ public void TestCustomFruitColour()
         {
             var skin = new TestSkin
             {
-                HyperDashFruitColour = Color4.Cyan
+                HyperDashFruitColour = Colour4.Cyan
             };
 
             checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
@@ -95,8 +94,8 @@ public void TestCustomFruitColourPriority()
         {
             var skin = new TestSkin
             {
-                HyperDashColour = Color4.Goldenrod,
-                HyperDashFruitColour = Color4.Cyan
+                HyperDashColour = Colour4.Goldenrod,
+                HyperDashFruitColour = Colour4.Cyan
             };
 
             checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
@@ -107,13 +106,13 @@ public void TestFruitColourFallback()
         {
             var skin = new TestSkin
             {
-                HyperDashColour = Color4.Goldenrod
+                HyperDashColour = Colour4.Goldenrod
             };
 
             checkHyperDashFruitColour(skin, skin.HyperDashColour);
         }
 
-        private void checkHyperDashCatcherColour(ISkin skin, Color4 expectedCatcherColour, Color4? expectedAfterImageColour = null)
+        private void checkHyperDashCatcherColour(ISkin skin, Colour4 expectedCatcherColour, Colour4? expectedAfterImageColour = null)
         {
             CatcherTrailDisplay trails = null;
             Catcher catcher = null;
@@ -151,10 +150,10 @@ private void checkHyperDashCatcherColour(ISkin skin, Color4 expectedCatcherColou
                 catcher.FinishTransforms();
             });
 
-            AddAssert("catcher colour returned to white", () => catcher.Colour == Color4.White);
+            AddAssert("catcher colour returned to white", () => catcher.Colour == Colour4.White);
         }
 
-        private void checkHyperDashFruitColour(ISkin skin, Color4 expectedColour)
+        private void checkHyperDashFruitColour(ISkin skin, Colour4 expectedColour)
         {
             DrawableFruit drawableFruit = null;
 
@@ -186,24 +185,25 @@ private Drawable setupSkinHierarchy(Drawable child, ISkin skin)
                         .WithChild(child)));
         }
 
-        private bool checkLegacyFruitHyperDashColour(DrawableFruit fruit, Color4 expectedColour) =>
-            fruit.ChildrenOfType<SkinnableDrawable>().FirstOrDefault()?.Drawable.ChildrenOfType<Sprite>().Any(c => c.Colour == expectedColour) == true;
+        private bool checkLegacyFruitHyperDashColour(DrawableFruit fruit, Colour4 expectedColour) =>
+            fruit.ChildrenOfType<SkinnableDrawable>().FirstOrDefault()?.Drawable.ChildrenOfType<Sprite>()
+                 .Any(c => c.Colour == expectedColour) == true;
 
         private class TestSkin : LegacySkin
         {
-            public Color4 HyperDashColour
+            public Colour4 HyperDashColour
             {
                 get => Configuration.CustomColours[nameof(CatchSkinColour.HyperDash)];
                 set => Configuration.CustomColours[nameof(CatchSkinColour.HyperDash)] = value;
             }
 
-            public Color4 HyperDashAfterImageColour
+            public Colour4 HyperDashAfterImageColour
             {
                 get => Configuration.CustomColours[nameof(CatchSkinColour.HyperDashAfterImage)];
                 set => Configuration.CustomColours[nameof(CatchSkinColour.HyperDashAfterImage)] = value;
             }
 
-            public Color4 HyperDashFruitColour
+            public Colour4 HyperDashFruitColour
             {
                 get => Configuration.CustomColours[nameof(CatchSkinColour.HyperDashFruit)];
                 set => Configuration.CustomColours[nameof(CatchSkinColour.HyperDashFruit)] = value;
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneJuiceStream.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneJuiceStream.cs
index 9a923adaab87..ae192c8d2e50 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneJuiceStream.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneJuiceStream.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneLegacyBeatmapSkin.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneLegacyBeatmapSkin.cs
index 871da281428b..eb1021aabc0d 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneLegacyBeatmapSkin.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneLegacyBeatmapSkin.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Skinning;
 using osu.Game.Tests.Beatmaps;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -110,23 +110,23 @@ public CatchExposedPlayer(bool userHasCustomColours)
             {
             }
 
-            public Color4 UsableHyperDashColour =>
+            public Colour4 UsableHyperDashColour =>
                 GameplayClockContainer.ChildrenOfType<BeatmapSkinProvidingContainer>()
                                       .First()
-                                      .GetConfig<SkinCustomColourLookup, Color4>(new SkinCustomColourLookup(CatchSkinColour.HyperDash))?
-                                      .Value ?? Color4.Red;
+                                      .GetConfig<SkinCustomColourLookup, Colour4>(new SkinCustomColourLookup(CatchSkinColour.HyperDash))?
+                                      .Value ?? Colour4.Red;
 
-            public Color4 UsableHyperDashAfterImageColour =>
+            public Colour4 UsableHyperDashAfterImageColour =>
                 GameplayClockContainer.ChildrenOfType<BeatmapSkinProvidingContainer>()
                                       .First()
-                                      .GetConfig<SkinCustomColourLookup, Color4>(new SkinCustomColourLookup(CatchSkinColour.HyperDashAfterImage))?
-                                      .Value ?? Color4.Red;
+                                      .GetConfig<SkinCustomColourLookup, Colour4>(new SkinCustomColourLookup(CatchSkinColour.HyperDashAfterImage))?
+                                      .Value ?? Colour4.Red;
 
-            public Color4 UsableHyperDashFruitColour =>
+            public Colour4 UsableHyperDashFruitColour =>
                 GameplayClockContainer.ChildrenOfType<BeatmapSkinProvidingContainer>()
                                       .First()
-                                      .GetConfig<SkinCustomColourLookup, Color4>(new SkinCustomColourLookup(CatchSkinColour.HyperDashFruit))?
-                                      .Value ?? Color4.Red;
+                                      .GetConfig<SkinCustomColourLookup, Colour4>(new SkinCustomColourLookup(CatchSkinColour.HyperDashFruit))?
+                                      .Value ?? Colour4.Red;
         }
 
         private class CatchCustomSkinWorkingBeatmap : CustomSkinWorkingBeatmap
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneOutOfBoundsObjects.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneOutOfBoundsObjects.cs
index 951f5d1ca126..bef177868a94 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneOutOfBoundsObjects.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneOutOfBoundsObjects.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch.Tests/TestSceneReplayRecording.cs b/osu.Game.Rulesets.Catch.Tests/TestSceneReplayRecording.cs
index 57ee49d70d0e..d044b1a44a90 100644
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneReplayRecording.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneReplayRecording.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
diff --git a/osu.Game.Rulesets.Catch/CatchRuleset.cs b/osu.Game.Rulesets.Catch/CatchRuleset.cs
index 78e4c32e92c3..154df0771b88 100644
--- a/osu.Game.Rulesets.Catch/CatchRuleset.cs
+++ b/osu.Game.Rulesets.Catch/CatchRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -36,7 +36,7 @@
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs
index bd5886cb8289..7e5a6e09b611 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs
@@ -7,8 +7,8 @@
 using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs
index 8220fb88b4c4..e8f11d3fb8a3 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs
index 6a671458f0af..aae0863b553f 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs
index c7805544ea6a..c639bdd30c0d 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Skinning.Default;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs
index 3a7d6d87f29c..8d0310f4743a 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs
@@ -2,8 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs
index 9dee127c36f9..46b2ed9215ce 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Primitives;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs
index 654ef006a52e..9ad7bba2467a 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs
@@ -9,8 +9,8 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs
index 9d450cd355fd..2dbd3a83a11d 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs
@@ -9,7 +9,6 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
@@ -34,7 +33,7 @@ public TimeSpanOutline()
             InternalChild = new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.Transparent
+                Colour = Colour4.Transparent
             };
         }
 
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs
index a3f8e85278ab..be7eef057da3 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs
@@ -2,12 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs
index 96cfbcb046b5..14900758fb84 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs
@@ -5,8 +5,8 @@
 using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs
index cce3b93d902d..1486f13f0bb2 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs
@@ -8,8 +8,7 @@
 using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs
index 6a0ce35a0768..c39f7be130cd 100644
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs
@@ -17,8 +17,8 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Catch.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs b/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs
index 47035b0227aa..d5fd93d3eff1 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchDistanceSnapGrid.cs b/osu.Game.Rulesets.Catch/Edit/CatchDistanceSnapGrid.cs
index cf6ddc66ed2b..d211d0d5882a 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchDistanceSnapGrid.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchDistanceSnapGrid.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfieldAdjustmentContainer.cs b/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfieldAdjustmentContainer.cs
index 36aee792a888..872764a62f00 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfieldAdjustmentContainer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfieldAdjustmentContainer.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
index be9685ce9af8..c7b623001ac8 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
@@ -21,7 +21,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs
index bd3308010939..0b5301cc35b7 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs
@@ -3,11 +3,11 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs b/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs
index a7cd84aed50d..c53f0348dd47 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs
@@ -12,8 +12,8 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 using Direction = osu.Framework.Graphics.Direction;
 
 namespace osu.Game.Rulesets.Catch.Edit
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs b/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs
index a5308f4cdeb1..c4569e26f2a1 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModFloatingFruits.cs b/osu.Game.Rulesets.Catch/Mods/CatchModFloatingFruits.cs
index 88f26bfd63f3..2a03cfc8fe94 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModFloatingFruits.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModFloatingFruits.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics.Sprites;
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs b/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs
index d3e6af54bf71..068c7b274ab5 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModMovingFast.cs b/osu.Game.Rulesets.Catch/Mods/CatchModMovingFast.cs
index 4612ed62ac6c..5747fc163002 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModMovingFast.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModMovingFast.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs b/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs
index 194f66815b63..c1465e7a77a7 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
diff --git a/osu.Game.Rulesets.Catch/Mods/CatchModSynesthesia.cs b/osu.Game.Rulesets.Catch/Mods/CatchModSynesthesia.cs
index abad658d94fc..60124150c64b 100644
--- a/osu.Game.Rulesets.Catch/Mods/CatchModSynesthesia.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModSynesthesia.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Screens.Edit;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
@@ -32,7 +32,7 @@ public void ApplyToDrawableHitObject(DrawableHitObject d)
         {
             if (currentBeatmap == null) return;
 
-            Color4? timingBasedColour = null;
+            Colour4? timingBasedColour = null;
 
             d.HitObjectApplied += _ =>
             {
@@ -45,7 +45,7 @@ public void ApplyToDrawableHitObject(DrawableHitObject d)
                 // Colour droplets into a solid colour, as droplets aren't generated snapped to timeline ticks.
                 if (d.HitObject is Droplet)
                 {
-                    timingBasedColour = Color4.LightGreen;
+                    timingBasedColour = Colour4.LightGreen;
                 }
             };
 
diff --git a/osu.Game.Rulesets.Catch/Objects/Banana.cs b/osu.Game.Rulesets.Catch/Objects/Banana.cs
index c69a1473fb60..2c4fd8e402f6 100644
--- a/osu.Game.Rulesets.Catch/Objects/Banana.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Banana.cs
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
@@ -31,20 +31,20 @@ public Banana()
         }
 
         // override any external colour changes with banananana
-        Color4 IHasComboInformation.GetComboColour(ISkin skin) => getBananaColour();
+        Colour4 IHasComboInformation.GetComboColour(ISkin skin) => getBananaColour();
 
-        private Color4 getBananaColour()
+        private Colour4 getBananaColour()
         {
             switch (StatelessRNG.NextInt(3, RandomSeed))
             {
                 default:
-                    return new Color4(255, 240, 0, 255);
+                    return new Colour4(255, 240, 0, 255);
 
                 case 1:
-                    return new Color4(255, 192, 0, 255);
+                    return new Colour4(255, 192, 0, 255);
 
                 case 2:
-                    return new Color4(214, 221, 28, 255);
+                    return new Colour4(214, 221, 28, 255);
             }
         }
 
diff --git a/osu.Game.Rulesets.Catch/Objects/CatchHitObject.cs b/osu.Game.Rulesets.Catch/Objects/CatchHitObject.cs
index 1d9868ee39b8..e3447b5f2903 100644
--- a/osu.Game.Rulesets.Catch/Objects/CatchHitObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/CatchHitObject.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
diff --git a/osu.Game.Rulesets.Catch/Objects/Drawables/CaughtObject.cs b/osu.Game.Rulesets.Catch/Objects/Drawables/CaughtObject.cs
index b76e0e9bae1b..332dd9ac7bd4 100644
--- a/osu.Game.Rulesets.Catch/Objects/Drawables/CaughtObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Drawables/CaughtObject.cs
@@ -6,8 +6,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
@@ -18,7 +17,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
     public abstract partial class CaughtObject : SkinnableDrawable, IHasCatchObjectState
     {
         public PalpableCatchHitObject HitObject { get; private set; } = null!;
-        public Bindable<Color4> AccentColour { get; } = new Bindable<Color4>();
+        public Bindable<Colour4> AccentColour { get; } = new Bindable<Colour4>();
         public Bindable<bool> HyperDash { get; } = new Bindable<bool>();
         public Bindable<int> IndexInBeatmap { get; } = new Bindable<int>();
         public Vector2 DisplayPosition => DrawPosition;
diff --git a/osu.Game.Rulesets.Catch/Objects/Drawables/DrawableBanana.cs b/osu.Game.Rulesets.Catch/Objects/Drawables/DrawableBanana.cs
index 157fda8f49af..c77c2d3c9c3c 100644
--- a/osu.Game.Rulesets.Catch/Objects/Drawables/DrawableBanana.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Drawables/DrawableBanana.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -6,7 +6,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Catch/Objects/Drawables/DrawablePalpableCatchHitObject.cs b/osu.Game.Rulesets.Catch/Objects/Drawables/DrawablePalpableCatchHitObject.cs
index 2919f6996642..fb8a26488aab 100644
--- a/osu.Game.Rulesets.Catch/Objects/Drawables/DrawablePalpableCatchHitObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Drawables/DrawablePalpableCatchHitObject.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -7,8 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
@@ -19,7 +18,7 @@ public abstract partial class DrawablePalpableCatchHitObject : DrawableCatchHitO
 
         public double DisplayStartTime => LifetimeStart;
 
-        Bindable<Color4> IHasCatchObjectState.AccentColour => AccentColour;
+        Bindable<Colour4> IHasCatchObjectState.AccentColour => AccentColour;
 
         public Bindable<bool> HyperDash { get; } = new Bindable<bool>();
 
diff --git a/osu.Game.Rulesets.Catch/Objects/Drawables/IHasCatchObjectState.cs b/osu.Game.Rulesets.Catch/Objects/Drawables/IHasCatchObjectState.cs
index 19e66bf995b7..0856358949bc 100644
--- a/osu.Game.Rulesets.Catch/Objects/Drawables/IHasCatchObjectState.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Drawables/IHasCatchObjectState.cs
@@ -2,8 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
@@ -13,7 +13,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
     public interface IHasCatchObjectState
     {
         PalpableCatchHitObject HitObject { get; }
-        Bindable<Color4> AccentColour { get; }
+        Bindable<Colour4> AccentColour { get; }
         Bindable<bool> HyperDash { get; }
         Bindable<int> IndexInBeatmap { get; }
         double DisplayStartTime { get; }
@@ -38,7 +38,7 @@ public static class HasCatchObjectStateExtensions
 
     public readonly record struct CatchObjectState(
         PalpableCatchHitObject HitObject,
-        Color4 AccentColour,
+        Colour4 AccentColour,
         bool HyperDash,
         int IndexInBeatmap,
         Vector2 DisplayPosition,
diff --git a/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs b/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs
index 9a4ecdfe74b6..a8a97266d5f0 100644
--- a/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs
+++ b/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
diff --git a/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs b/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs
index 59c000a27d6e..06497a4ffcfb 100644
--- a/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
@@ -46,6 +46,6 @@ public CatchHitObject? HyperDashTarget
             }
         }
 
-        Color4 IHasComboInformation.GetComboColour(ISkin skin) => IHasComboInformation.GetSkinComboColour(this, skin, IndexInBeatmap + 1);
+        Colour4 IHasComboInformation.GetComboColour(ISkin skin) => IHasComboInformation.GetSkinComboColour(this, skin, IndexInBeatmap + 1);
     }
 }
diff --git a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonBananaPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonBananaPiece.cs
index 810dc7eed571..7e4af36ba7e8 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonBananaPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonBananaPiece.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +10,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Argon
 {
@@ -39,7 +37,7 @@ private void load()
                         {
                             new Circle
                             {
-                                Colour = Color4.White.Opacity(0.4f),
+                                Colour = Colour4.White.Opacity(0.4f),
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
                                 Blending = BlendingParameters.Additive,
@@ -48,7 +46,7 @@ private void load()
                             },
                             new Box
                             {
-                                Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0), Color4.White.Opacity(0.8f)),
+                                Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0), Colour4.White.Opacity(0.8f)),
                                 RelativeSizeAxes = Axes.X,
                                 Blending = BlendingParameters.Additive,
                                 Anchor = Anchor.Centre,
@@ -58,7 +56,7 @@ private void load()
                             },
                             new Circle
                             {
-                                Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.8f), Color4.White.Opacity(0)),
+                                Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.8f), Colour4.White.Opacity(0)),
                                 RelativeSizeAxes = Axes.X,
                                 Blending = BlendingParameters.Additive,
                                 Anchor = Anchor.Centre,
@@ -78,7 +76,7 @@ private void load()
                         {
                             Type = EdgeEffectType.Glow,
                             Hollow = false,
-                            Colour = Color4.White.Opacity(0.1f),
+                            Colour = Colour4.White.Opacity(0.1f),
                             Radius = 50,
                         },
                         Child =
@@ -86,7 +84,7 @@ private void load()
                             Alpha = 0,
                             AlwaysPresent = true,
                         },
-                        BorderColour = Color4.White.Opacity(0.1f),
+                        BorderColour = Colour4.White.Opacity(0.1f),
                         BorderThickness = 3,
                     },
                 }
diff --git a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonCatcher.cs b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonCatcher.cs
index 5a788a26fb41..e08d2b520088 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonCatcher.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonCatcher.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Argon
 {
@@ -36,7 +35,7 @@ private void load()
                             RelativeSizeAxes = Axes.Both,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Width = Catcher.ALLOWED_CATCH_RANGE,
                         },
                         new Box
@@ -44,7 +43,7 @@ private void load()
                             Name = "long line left",
                             Anchor = Anchor.CentreLeft,
                             Origin = Anchor.CentreRight,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Alpha = 0.25f,
                             RelativeSizeAxes = Axes.X,
                             Width = 20,
@@ -55,7 +54,7 @@ private void load()
                             Name = "bumper left",
                             Anchor = Anchor.CentreLeft,
                             Origin = Anchor.CentreLeft,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.X,
                             Width = (1 - Catcher.ALLOWED_CATCH_RANGE) / 2,
                             Height = 4,
@@ -65,7 +64,7 @@ private void load()
                             Name = "long line right",
                             Anchor = Anchor.CentreRight,
                             Origin = Anchor.CentreLeft,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Alpha = 0.25f,
                             RelativeSizeAxes = Axes.X,
                             Width = 20,
@@ -76,7 +75,7 @@ private void load()
                             Name = "bumper right",
                             Anchor = Anchor.CentreRight,
                             Origin = Anchor.CentreRight,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.X,
                             Width = (1 - Catcher.ALLOWED_CATCH_RANGE) / 2,
                             Height = 4,
diff --git a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonDropletPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonDropletPiece.cs
index 38fe7916f53c..4e04b02fd99f 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonDropletPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonDropletPiece.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.Skinning.Default;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonFruitPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonFruitPiece.cs
index 4b5319e85949..c67dad4f0705 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonFruitPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonFruitPiece.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.Skinning.Default;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonHitExplosion.cs b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonHitExplosion.cs
index a3c0c8c10889..f5c7b34477b9 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonHitExplosion.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonHitExplosion.cs
@@ -11,8 +11,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Argon
 {
@@ -23,7 +22,7 @@ public partial class ArgonHitExplosion : CompositeDrawable, IHitExplosion
         private Container tallExplosion = null!;
         private Container largeFaint = null!;
 
-        private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly Bindable<Colour4> accentColour = new Bindable<Colour4>();
 
         public ArgonHitExplosion()
         {
@@ -80,7 +79,7 @@ private void load()
                 largeFaint.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Interpolation.ValueAt(0.2f, colour.NewValue, Color4.White, 0, 1),
+                    Colour = Interpolation.ValueAt(0.2f, colour.NewValue, Colour4.White, 0, 1),
                     Hollow = false,
                     Radius = 50,
                 };
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/BananaPulpFormation.cs b/osu.Game.Rulesets.Catch/Skinning/Default/BananaPulpFormation.cs
index 26c8558e743d..c68e91149d6f 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/BananaPulpFormation.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/BananaPulpFormation.cs
@@ -1,7 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/BorderPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Default/BorderPiece.cs
index f0bdcfa1ba20..75c4d0beeda0 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/BorderPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/BorderPiece.cs
@@ -4,8 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
@@ -16,7 +15,7 @@ public BorderPiece()
             Size = new Vector2(CatchHitObject.OBJECT_RADIUS * 2);
             Anchor = Anchor.Centre;
             Origin = Anchor.Centre;
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
             BorderThickness = 6f * FruitPiece.RADIUS_ADJUST;
 
             // Border is drawn only when there is a child drawable.
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/CatchHitObjectPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Default/CatchHitObjectPiece.cs
index 1cc1875b0616..4b9f6b3350e4 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/CatchHitObjectPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/CatchHitObjectPiece.cs
@@ -7,13 +7,12 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
     public abstract partial class CatchHitObjectPiece : CompositeDrawable
     {
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
         public readonly Bindable<bool> HyperDash = new Bindable<bool>();
         public readonly Bindable<int> IndexInBeatmap = new Bindable<int>();
 
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs b/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs
index bcd4c73f0446..66f24b65954f 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Rulesets.Catch.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/DefaultHitExplosion.cs b/osu.Game.Rulesets.Catch/Skinning/Default/DefaultHitExplosion.cs
index 3af178fe4db2..f995f2ed8632 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/DefaultHitExplosion.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/DefaultHitExplosion.cs
@@ -2,15 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
@@ -97,14 +95,14 @@ private void applyTransforms(int randomSeed)
             this.FadeInFromZero(50).Then().FadeOut(duration, Easing.Out);
         }
 
-        private void setColour(Color4 objectColour)
+        private void setColour(Colour4 objectColour)
         {
             const float roundness = 100;
 
             largeFaint.EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Glow,
-                Colour = Interpolation.ValueAt(0.1f, objectColour, Color4.White, 0, 1).Opacity(0.3f),
+                Colour = Interpolation.ValueAt(0.1f, objectColour, Colour4.White, 0, 1).Opacity(0.3f),
                 Roundness = 160,
                 Radius = 200,
             };
@@ -112,7 +110,7 @@ private void setColour(Color4 objectColour)
             smallFaint.EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Glow,
-                Colour = Interpolation.ValueAt(0.6f, objectColour, Color4.White, 0, 1),
+                Colour = Interpolation.ValueAt(0.6f, objectColour, Colour4.White, 0, 1),
                 Roundness = 20,
                 Radius = 50,
             };
@@ -120,7 +118,7 @@ private void setColour(Color4 objectColour)
             directionalGlow1.EdgeEffect = directionalGlow2.EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Glow,
-                Colour = Interpolation.ValueAt(0.4f, objectColour, Color4.White, 0, 1),
+                Colour = Interpolation.ValueAt(0.4f, objectColour, Colour4.White, 0, 1),
                 Roundness = roundness,
                 Radius = 40,
             };
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/DropletPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Default/DropletPiece.cs
index f002457b611c..80423019d383 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/DropletPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/DropletPiece.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/FruitPulpFormation.cs b/osu.Game.Rulesets.Catch/Skinning/Default/FruitPulpFormation.cs
index c031e50e34b3..033271032775 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/FruitPulpFormation.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/FruitPulpFormation.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Bindables;
 using osu.Game.Rulesets.Catch.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/Pulp.cs b/osu.Game.Rulesets.Catch/Skinning/Default/Pulp.cs
index 4b4d6f3788cd..97adb81d8d73 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/Pulp.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/Pulp.cs
@@ -2,17 +2,15 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
     public partial class Pulp : Circle
     {
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
 
         public Pulp()
         {
@@ -21,7 +19,7 @@ public Pulp()
             Origin = Anchor.Centre;
 
             Blending = BlendingParameters.Additive;
-            Colour = Color4.White.Opacity(0.9f);
+            Colour = Colour4.White.Opacity(0.9f);
         }
 
         protected override void LoadComplete()
@@ -31,7 +29,7 @@ protected override void LoadComplete()
             AccentColour.BindValueChanged(updateAccentColour, true);
         }
 
-        private void updateAccentColour(ValueChangedEvent<Color4> colour)
+        private void updateAccentColour(ValueChangedEvent<Colour4> colour)
         {
             EdgeEffect = new EdgeEffectParameters
             {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Default/PulpFormation.cs b/osu.Game.Rulesets.Catch/Skinning/Default/PulpFormation.cs
index 21502e6fa0a3..4dea0f972d62 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Default/PulpFormation.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/PulpFormation.cs
@@ -5,14 +5,13 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Default
 {
     public abstract partial class PulpFormation : CompositeDrawable
     {
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
 
         protected const float LARGE_PULP_3 = 16f * FruitPiece.RADIUS_ADJUST;
         protected const float DISTANCE_FROM_CENTRE_3 = 0.15f;
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs
index 4704e83b7684..03f28beb2cb8 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs
@@ -6,8 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
@@ -156,7 +155,7 @@ private bool hasNewStyleCatcherSprite() =>
             switch (lookup)
             {
                 case CatchSkinColour colour:
-                    var result = (Bindable<Color4>?)base.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+                    var result = (Bindable<Colour4>?)base.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
                     if (result == null)
                         return null;
 
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyBananaPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyBananaPiece.cs
index ae530e94fcac..22d4e63b214b 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyBananaPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyBananaPiece.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics.Textures;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchComboCounter.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchComboCounter.cs
index 3248ccba7263..703df58788fa 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchComboCounter.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchComboCounter.cs
@@ -6,8 +6,7 @@
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
@@ -49,7 +48,7 @@ public LegacyCatchComboCounter()
 
         private int lastDisplayedCombo;
 
-        public void UpdateCombo(int combo, Color4? hitObjectColour = null)
+        public void UpdateCombo(int combo, Colour4? hitObjectColour = null)
         {
             if (combo == lastDisplayedCombo)
                 return;
@@ -88,7 +87,7 @@ public void UpdateCombo(int combo, Color4? hitObjectColour = null)
                        .ScaleTo(1f)
                        .ScaleTo(1.1f, 60).Then().ScaleTo(1f, 30);
 
-                explosion.Colour = hitObjectColour ?? Color4.White;
+                explosion.Colour = hitObjectColour ?? Colour4.White;
 
                 explosion.SetCountWithoutRolling(combo);
                 explosion.ScaleTo(1.5f)
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchHitObjectPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchHitObjectPiece.cs
index 15b168b8c2d2..a87dce5fa891 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchHitObjectPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatchHitObjectPiece.cs
@@ -10,8 +10,7 @@
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
@@ -19,7 +18,7 @@ public abstract partial class LegacyCatchHitObjectPiece : PoolableDrawable
     {
         protected readonly Bindable<int> IndexInBeatmap = new Bindable<int>();
 
-        private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly Bindable<Colour4> accentColour = new Bindable<Colour4>();
         private readonly Bindable<bool> hyperDash = new Bindable<bool>();
 
         private readonly Sprite colouredSprite;
@@ -68,8 +67,8 @@ protected override void LoadComplete()
             hyperDash.BindTo(ObjectState.HyperDash);
             IndexInBeatmap.BindTo(ObjectState.IndexInBeatmap);
 
-            hyperSprite.Colour = Skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit)?.Value ??
-                                 Skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ??
+            hyperSprite.Colour = Skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDashFruit)?.Value ??
+                                 Skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDash)?.Value ??
                                  Catcher.DEFAULT_HYPER_DASH_COLOUR;
 
             accentColour.BindValueChanged(colour =>
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcher.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcher.cs
index 6cd8b141914d..5de803ef9571 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcher.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcher.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyDropletPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyDropletPiece.cs
index a121d20d3d31..e148e25f3073 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyDropletPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyDropletPiece.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics.Textures;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyFruitPiece.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyFruitPiece.cs
index 3a8b5b427ae9..36efe25e3455 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyFruitPiece.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyFruitPiece.cs
@@ -3,7 +3,7 @@
 
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyHitExplosion.cs b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyHitExplosion.cs
index 47660503dcfb..d286d88bcd0b 100644
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyHitExplosion.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyHitExplosion.cs
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatchComboDisplay.cs b/osu.Game.Rulesets.Catch/UI/CatchComboDisplay.cs
index 3d0062d32f45..62312e67dbfa 100644
--- a/osu.Game.Rulesets.Catch/UI/CatchComboDisplay.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchComboDisplay.cs
@@ -9,7 +9,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -71,7 +70,7 @@ public void OnRevertResult(JudgementResult result)
             updateCombo(result.ComboAtJudgement, null);
         }
 
-        private void updateCombo(int newCombo, Color4? hitObjectColour)
+        private void updateCombo(int newCombo, Colour4? hitObjectColour)
         {
             currentCombo = newCombo;
             ComboCounter?.UpdateCombo(newCombo, hitObjectColour);
diff --git a/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs b/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs
index f091dee84524..7dc542c28710 100644
--- a/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatchPlayfieldAdjustmentContainer.cs b/osu.Game.Rulesets.Catch/UI/CatchPlayfieldAdjustmentContainer.cs
index e6ccb5c5b14e..61695cd138c1 100644
--- a/osu.Game.Rulesets.Catch/UI/CatchPlayfieldAdjustmentContainer.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchPlayfieldAdjustmentContainer.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatchReplayRecorder.cs b/osu.Game.Rulesets.Catch/UI/CatchReplayRecorder.cs
index 32ede8f20567..fac30104e9c4 100644
--- a/osu.Game.Rulesets.Catch/UI/CatchReplayRecorder.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchReplayRecorder.cs
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatchTouchInputMapper.cs b/osu.Game.Rulesets.Catch/UI/CatchTouchInputMapper.cs
index 10e43cf74a31..b70408416374 100644
--- a/osu.Game.Rulesets.Catch/UI/CatchTouchInputMapper.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchTouchInputMapper.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -10,7 +10,7 @@
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/Catcher.cs b/osu.Game.Rulesets.Catch/UI/Catcher.cs
index a58db87e53ec..000f089b9be4 100644
--- a/osu.Game.Rulesets.Catch/UI/Catcher.cs
+++ b/osu.Game.Rulesets.Catch/UI/Catcher.cs
@@ -19,8 +19,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -47,7 +46,7 @@ public partial class Catcher : SkinReloadableDrawable
         /// <summary>
         /// The default colour used to tint hyper-dash fruit, along with the moving catcher, its trail and after-image during a hyper-dash.
         /// </summary>
-        public static readonly Color4 DEFAULT_HYPER_DASH_COLOUR = Color4.Red;
+        public static readonly Colour4 DEFAULT_HYPER_DASH_COLOUR = Colour4.Red;
 
         /// <summary>
         /// The duration between transitioning to hyper-dash state.
@@ -119,7 +118,7 @@ public CatcherAnimationState CurrentState
 
         private readonly SkinnableCatcher body;
 
-        private Color4 hyperDashColour = DEFAULT_HYPER_DASH_COLOUR;
+        private Colour4 hyperDashColour = DEFAULT_HYPER_DASH_COLOUR;
 
         private double? lastHyperDashStartTime;
         private double hyperDashModifier = 1;
@@ -334,7 +333,7 @@ public void ApplyDifficulty(IBeatmapDifficultyInfo? difficulty)
 
         private void runHyperDashStateTransition(bool hyperDashing)
         {
-            this.FadeColour(hyperDashing ? hyperDashColour : Color4.White, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+            this.FadeColour(hyperDashing ? hyperDashColour : Colour4.White, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
         }
 
         protected override void SkinChanged(ISkinSource skin)
@@ -342,7 +341,7 @@ protected override void SkinChanged(ISkinSource skin)
             base.SkinChanged(skin);
 
             hyperDashColour =
-                skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ??
+                skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDash)?.Value ??
                 DEFAULT_HYPER_DASH_COLOUR;
 
             runHyperDashStateTransition(HyperDashing);
@@ -421,7 +420,7 @@ private bool tooCloseToExistingObject(Vector2 position, float checkDistance)
             return false;
         }
 
-        private void addLighting(JudgementResult judgementResult, Color4 colour, float x) =>
+        private void addLighting(JudgementResult judgementResult, Colour4 colour, float x) =>
             hitExplosionContainer.Add(new HitExplosionEntry(Time.Current, judgementResult, colour, x));
 
         private CaughtObject? getCaughtObject(PalpableCatchHitObject source)
diff --git a/osu.Game.Rulesets.Catch/UI/CatcherArea.cs b/osu.Game.Rulesets.Catch/UI/CatcherArea.cs
index 1cb806da6a7d..3ba060bb19c9 100644
--- a/osu.Game.Rulesets.Catch/UI/CatcherArea.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatcherArea.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatcherTrail.cs b/osu.Game.Rulesets.Catch/UI/CatcherTrail.cs
index 762f95828aa0..979819b271d6 100644
--- a/osu.Game.Rulesets.Catch/UI/CatcherTrail.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatcherTrail.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Timing;
 using osu.Game.Rulesets.Objects.Pooling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/CatcherTrailDisplay.cs b/osu.Game.Rulesets.Catch/UI/CatcherTrailDisplay.cs
index 6b888be9617a..ed893ee1616c 100644
--- a/osu.Game.Rulesets.Catch/UI/CatcherTrailDisplay.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatcherTrailDisplay.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -11,8 +12,6 @@
 using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Rulesets.Objects.Pooling;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -29,9 +28,9 @@ public partial class CatcherTrailDisplay : PooledDrawableWithLifetimeContainer<C
         /// </summary>
         public double LastDashTrailTime => getLastDashTrailTime();
 
-        public Color4 HyperDashTrailsColour => hyperDashTrails.Colour;
+        public Colour4 HyperDashTrailsColour => hyperDashTrails.Colour;
 
-        public Color4 HyperDashAfterImageColour => hyperDashAfterImages.Colour;
+        public Colour4 HyperDashAfterImageColour => hyperDashAfterImages.Colour;
 
         protected override bool RemoveRewoundEntry => true;
 
@@ -86,8 +85,8 @@ protected override void LoadComplete()
 
         private void skinSourceChanged()
         {
-            hyperDashTrails.Colour = skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ?? Catcher.DEFAULT_HYPER_DASH_COLOUR;
-            hyperDashAfterImages.Colour = skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashAfterImage)?.Value ?? hyperDashTrails.Colour;
+            hyperDashTrails.Colour = skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDash)?.Value ?? Catcher.DEFAULT_HYPER_DASH_COLOUR;
+            hyperDashAfterImages.Colour = skin.GetConfig<CatchSkinColour, Colour4>(CatchSkinColour.HyperDashAfterImage)?.Value ?? hyperDashTrails.Colour;
         }
 
         protected override void AddDrawable(CatcherTrailEntry entry, CatcherTrail drawable)
diff --git a/osu.Game.Rulesets.Catch/UI/CatcherTrailEntry.cs b/osu.Game.Rulesets.Catch/UI/CatcherTrailEntry.cs
index 3a40ab26ccce..e5bf9fe0d75a 100644
--- a/osu.Game.Rulesets.Catch/UI/CatcherTrailEntry.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatcherTrailEntry.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics.Performance;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs b/osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs
index 32ebdc11598e..f349845eca54 100644
--- a/osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs
+++ b/osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
diff --git a/osu.Game.Rulesets.Catch/UI/HitExplosionEntry.cs b/osu.Game.Rulesets.Catch/UI/HitExplosionEntry.cs
index f265da149aa3..ac4f5264172e 100644
--- a/osu.Game.Rulesets.Catch/UI/HitExplosionEntry.cs
+++ b/osu.Game.Rulesets.Catch/UI/HitExplosionEntry.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics.Performance;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Judgements;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -23,14 +23,14 @@ public class HitExplosionEntry : LifetimeEntry
         /// <summary>
         /// The accent colour of the object caught.
         /// </summary>
-        public Color4 ObjectColour { get; }
+        public Colour4 ObjectColour { get; }
 
         /// <summary>
         /// The position at which the object was caught.
         /// </summary>
         public float Position { get; }
 
-        public HitExplosionEntry(double startTime, JudgementResult judgementResult, Color4 objectColour, float position)
+        public HitExplosionEntry(double startTime, JudgementResult judgementResult, Colour4 objectColour, float position)
         {
             LifetimeStart = startTime;
             Position = position;
diff --git a/osu.Game.Rulesets.Catch/UI/ICatchComboCounter.cs b/osu.Game.Rulesets.Catch/UI/ICatchComboCounter.cs
index cfb687906752..a0b0855daff3 100644
--- a/osu.Game.Rulesets.Catch/UI/ICatchComboCounter.cs
+++ b/osu.Game.Rulesets.Catch/UI/ICatchComboCounter.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
@@ -19,6 +18,6 @@ public interface ICatchComboCounter : IDrawable
         /// </remarks>
         /// <param name="combo">The new combo value.</param>
         /// <param name="hitObjectColour">The colour of the object if hit, null on miss.</param>
-        void UpdateCombo(int combo, Color4? hitObjectColour = null);
+        void UpdateCombo(int combo, Colour4? hitObjectColour = null);
     }
 }
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/ManiaPlacementBlueprintTestScene.cs b/osu.Game.Rulesets.Mania.Tests/Editor/ManiaPlacementBlueprintTestScene.cs
index a203a664cb64..bca1b4e9648d 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/ManiaPlacementBlueprintTestScene.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/ManiaPlacementBlueprintTestScene.cs
@@ -15,7 +15,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
@@ -42,7 +41,7 @@ protected ManiaPlacementBlueprintTestScene()
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-                AccentColour = { Value = Color4.OrangeRed },
+                AccentColour = { Value = Colour4.OrangeRed },
                 Clock = new FramedClock(new StopwatchClock()), // No scroll
             });
         }
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneEditor.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneEditor.cs
index ef4e09c26bfb..49a5b7bc154f 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneEditor.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneEditor.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneHoldNoteTailDrag.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneHoldNoteTailDrag.cs
index bdbf24bb95b3..7dd8d2c5a88c 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneHoldNoteTailDrag.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneHoldNoteTailDrag.cs
@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 using DragArea = osu.Game.Screens.Edit.Compose.Components.Timeline.TimelineHitObjectBlueprint.DragArea;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaEditorSaving.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaEditorSaving.cs
index b21928ef7532..c08b81488cfc 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaEditorSaving.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaEditorSaving.cs
@@ -9,7 +9,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaHitObjectComposer.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaHitObjectComposer.cs
index d88f48858230..a9a76c05ad70 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaHitObjectComposer.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -22,8 +23,7 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaSelectionHandler.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaSelectionHandler.cs
index a920b3470f1f..bc1ace09d21c 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaSelectionHandler.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaSelectionHandler.cs
@@ -11,7 +11,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneNotePlacementBlueprint.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneNotePlacementBlueprint.cs
index a18b7652337f..37dc2e7c72d3 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneNotePlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneNotePlacementBlueprint.cs
@@ -19,7 +19,7 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneObjectPlacement.cs b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneObjectPlacement.cs
index e88a0d5bc95b..7378ddcdc3b8 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneObjectPlacement.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/TestSceneObjectPlacement.cs
@@ -9,7 +9,7 @@
 using osu.Game.Configuration;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.cs
index dd494dfc8217..0b9240bcb787 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaHitObjectTestScene.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
@@ -41,7 +40,7 @@ public void SetUp() => Schedule(() =>
                             c.Add(CreateHitObject().With(h =>
                             {
                                 h.HitObject.StartTime = Time.Current + 5000;
-                                h.AccentColour.Value = Color4.Orange;
+                                h.AccentColour.Value = Colour4.Orange;
                             }));
                         })
                     },
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.cs
index b2e8ebd5812d..808d22e9af11 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.cs
@@ -4,14 +4,12 @@
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Rulesets.UI.Scrolling.Algorithms;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
@@ -35,7 +33,7 @@ protected ManiaSkinnableTestScene()
             Add(new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.SlateGray.Opacity(0.2f),
+                Colour = Colour4.SlateGray.Opacity(0.2f),
                 Depth = 1
             });
         }
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnBackground.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnBackground.cs
index 47923d0733d6..9bebbaaafd14 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnBackground.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnBackground.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnHitObjectArea.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnHitObjectArea.cs
index bf67d2d6a9c8..d6e280370ffa 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnHitObjectArea.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnHitObjectArea.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneHitExplosion.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneHitExplosion.cs
index a0833ff91fef..9129e2ad8624 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneHitExplosion.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneHitExplosion.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Mania.Skinning.Default;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Skinning/TestScenePlayfield.cs b/osu.Game.Rulesets.Mania.Tests/Skinning/TestScenePlayfield.cs
index 110336d823c1..2343f5d25694 100644
--- a/osu.Game.Rulesets.Mania.Tests/Skinning/TestScenePlayfield.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Skinning/TestScenePlayfield.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Game.Beatmaps;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneColumn.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneColumn.cs
index ef1790917fbe..e9554da39df6 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneColumn.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneColumn.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,8 +16,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
@@ -90,7 +89,7 @@ private Drawable createColumn(ScrollingDirection direction, ManiaAction action,
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Height = 0.85f,
-                AccentColour = { Value = Color4.OrangeRed },
+                AccentColour = { Value = Colour4.OrangeRed },
                 Action = { Value = action },
             };
 
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneDrawableManiaHitObject.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneDrawableManiaHitObject.cs
index 7a0abb9e648a..a1b80fbfebc7 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneDrawableManiaHitObject.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneDrawableManiaHitObject.cs
@@ -16,7 +16,6 @@
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
@@ -44,7 +43,7 @@ public void SetUp() => Schedule(() =>
                 {
                     Action = { Value = ManiaAction.Key1 },
                     Height = 0.85f,
-                    AccentColour = { Value = Color4.Gray },
+                    AccentColour = { Value = Colour4.Gray },
                 },
             };
         });
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneLegacyReplayPlayback.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneLegacyReplayPlayback.cs
index f95c0c186f1d..ae30fcd998f1 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneLegacyReplayPlayback.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneLegacyReplayPlayback.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneManiaTouchInput.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneManiaTouchInput.cs
index f445af9caff1..777dc9bc8f90 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneManiaTouchInput.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneManiaTouchInput.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Mania.Configuration;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
index 990f545ee4bf..5f65fae7001b 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
@@ -4,10 +4,10 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -22,8 +22,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
@@ -74,7 +72,7 @@ private Drawable createNoteDisplay(ScrollingDirection direction, int identifier,
                 AutoSizeAxes = Axes.Both,
                 Child = new NoteContainer(direction, $"note {identifier}, scrolling {direction.ToString().ToLowerInvariant()}")
                 {
-                    Child = hitObject = new DrawableNote(note) { AccentColour = { Value = Color4.OrangeRed } }
+                    Child = hitObject = new DrawableNote(note) { AccentColour = { Value = Colour4.OrangeRed } }
                 }
             };
         }
@@ -92,7 +90,7 @@ private Drawable createHoldNoteDisplay(ScrollingDirection direction, int identif
                     Child = hitObject = new DrawableHoldNote(note)
                     {
                         RelativeSizeAxes = Axes.Both,
-                        AccentColour = { Value = Color4.OrangeRed },
+                        AccentColour = { Value = Colour4.OrangeRed },
                     }
                 }
             };
@@ -137,7 +135,7 @@ public NoteContainer(ScrollingDirection direction, string description)
                                     Origin = Anchor.TopCentre,
                                     RelativeSizeAxes = Axes.Both,
                                     Width = 1.25f,
-                                    Colour = Color4.Green.Opacity(0.5f)
+                                    Colour = Colour4.Green.Opacity(0.5f)
                                 },
                                 content = new Container { RelativeSizeAxes = Axes.Both }
                             }
diff --git a/osu.Game.Rulesets.Mania.Tests/TestScenePlayfieldCoveringContainer.cs b/osu.Game.Rulesets.Mania.Tests/TestScenePlayfieldCoveringContainer.cs
index 341d52afcf68..6ca451d2ae48 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestScenePlayfieldCoveringContainer.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestScenePlayfieldCoveringContainer.cs
@@ -1,14 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
@@ -27,7 +26,7 @@ public TestScenePlayfieldCoveringContainer()
                 Child = cover = new PlayfieldCoveringWrapper(new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Orange
+                    Colour = Colour4.Orange
                 })
                 {
                     RelativeSizeAxes = Axes.Both,
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneReplayRecording.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneReplayRecording.cs
index bf5158456762..37e938a80df5 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneReplayRecording.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneReplayRecording.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Mania.Replays;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneStage.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneStage.cs
index ce1a2dcfa46a..d9830f8fef5e 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneStage.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneStage.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -18,7 +19,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
diff --git a/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs b/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
index 0461e120c35f..3830a987504c 100644
--- a/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -16,7 +16,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring.Legacy;
 using osu.Game.Utils;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
diff --git a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitCirclePatternGenerator.cs b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitCirclePatternGenerator.cs
index 11664af76242..db0dc403396f 100644
--- a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitCirclePatternGenerator.cs
+++ b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitCirclePatternGenerator.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 {
@@ -36,7 +36,7 @@ public HitCirclePatternGenerator(LegacyRandom random, HitObject hitObject, IBeat
 
             var positionData = hitObject as IHasPosition;
 
-            float positionSeparation = ((positionData?.Position ?? Vector2.Zero) - previousPosition).Length;
+            float positionSeparation = ((positionData?.Position ?? Vector2.Zero) - previousPosition).Length();
             double timeSeparation = hitObject.StartTime - previousTime;
 
             if (timeSeparation <= 80)
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditHoldNoteEndPiece.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditHoldNoteEndPiece.cs
index d4b61b4661bc..5a1dcfcf46ec 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditHoldNoteEndPiece.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditHoldNoteEndPiece.cs
@@ -1,15 +1,14 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mania.Skinning.Default;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditNotePiece.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditNotePiece.cs
index f68004db28db..1082e9506291 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditNotePiece.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/Components/EditNotePiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -8,7 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints.Components
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs
index 2674ab4d7502..c05706569154 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -12,8 +12,8 @@
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNoteSelectionBlueprint.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNoteSelectionBlueprint.cs
index ff29154f8713..fa35e94e0baa 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNoteSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNoteSelectionBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs
index d14709081476..260118dc530d 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs
@@ -10,8 +10,8 @@
 using osu.Game.Rulesets.Mania.Skinning.Default;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs
index a8cccfb06748..940b62155cae 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -8,8 +8,8 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Objects;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/Blueprints/NoteSelectionBlueprint.cs b/osu.Game.Rulesets.Mania/Edit/Blueprints/NoteSelectionBlueprint.cs
index 3476f91568b3..a7d367b331da 100644
--- a/osu.Game.Rulesets.Mania/Edit/Blueprints/NoteSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Mania/Edit/Blueprints/NoteSelectionBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/DrawableManiaEditorRuleset.cs b/osu.Game.Rulesets.Mania/Edit/DrawableManiaEditorRuleset.cs
index 181bc7341c20..d569f1ca8fcd 100644
--- a/osu.Game.Rulesets.Mania/Edit/DrawableManiaEditorRuleset.cs
+++ b/osu.Game.Rulesets.Mania/Edit/DrawableManiaEditorRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/ManiaBlueprintContainer.cs b/osu.Game.Rulesets.Mania/Edit/ManiaBlueprintContainer.cs
index 4eb54e636638..83d37b9b2753 100644
--- a/osu.Game.Rulesets.Mania/Edit/ManiaBlueprintContainer.cs
+++ b/osu.Game.Rulesets.Mania/Edit/ManiaBlueprintContainer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit
 {
diff --git a/osu.Game.Rulesets.Mania/Edit/ManiaHitObjectComposer.cs b/osu.Game.Rulesets.Mania/Edit/ManiaHitObjectComposer.cs
index 7da501063dfe..1d92b58687e1 100644
--- a/osu.Game.Rulesets.Mania/Edit/ManiaHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Mania/Edit/ManiaHitObjectComposer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Edit
 {
diff --git a/osu.Game.Rulesets.Mania/Mods/ManiaModFlashlight.cs b/osu.Game.Rulesets.Mania/Mods/ManiaModFlashlight.cs
index 2539945c20ad..23fdbccd3505 100644
--- a/osu.Game.Rulesets.Mania/Mods/ManiaModFlashlight.cs
+++ b/osu.Game.Rulesets.Mania/Mods/ManiaModFlashlight.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -7,7 +7,7 @@
 using osu.Framework.Layout;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Mods
 {
diff --git a/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs b/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs
index 78f1bba8d0c0..c11437813888 100644
--- a/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs
+++ b/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -20,7 +20,7 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableNote.cs b/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableNote.cs
index f6b92ab4059e..31c36dd95275 100644
--- a/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableNote.cs
+++ b/osu.Game.Rulesets.Mania/Objects/Drawables/DrawableNote.cs
@@ -17,7 +17,6 @@
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
@@ -129,7 +128,7 @@ private void updateSnapColour()
 
             int snapDivisor = beatmap.ControlPointInfo.GetClosestBeatDivisor(HitObject.StartTime);
 
-            Colour = configTimingBasedNoteColouring.Value ? BindableBeatDivisor.GetColourFor(snapDivisor, colours) : Color4.White;
+            Colour = configTimingBasedNoteColouring.Value ? BindableBeatDivisor.GetColourFor(snapDivisor, colours) : Colour4.White;
         }
     }
 }
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonColumnBackground.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonColumnBackground.cs
index 52e60798776e..89a3d15ea117 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonColumnBackground.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonColumnBackground.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +11,6 @@
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -20,8 +18,8 @@ public partial class ArgonColumnBackground : CompositeDrawable, IKeyBindingHandl
     {
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
 
-        private Color4 brightColour;
-        private Color4 dimColour;
+        private Colour4 brightColour;
+        private Colour4 dimColour;
 
         private Box background = null!;
         private Box backgroundOverlay = null!;
@@ -29,7 +27,7 @@ public partial class ArgonColumnBackground : CompositeDrawable, IKeyBindingHandl
         [Resolved]
         private Column column { get; set; } = null!;
 
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         public ArgonColumnBackground()
         {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitExplosion.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitExplosion.cs
index d490d3f944d8..8c6e0dddc186 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitExplosion.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitExplosion.cs
@@ -11,7 +11,6 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -26,7 +25,7 @@ public partial class ArgonHitExplosion : CompositeDrawable, IHitExplosion
 
         private Container largeFaint = null!;
 
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         public ArgonHitExplosion()
         {
@@ -50,7 +49,7 @@ private void load(IScrollingInfo scrollingInfo)
                     Blending = BlendingParameters.Additive,
                     Child = new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                     },
                 },
@@ -62,7 +61,7 @@ private void load(IScrollingInfo scrollingInfo)
             accentColour = column.AccentColour.GetBoundCopy();
             accentColour.BindValueChanged(colour =>
             {
-                largeFaint.Colour = Interpolation.ValueAt(0.8f, colour.NewValue, Color4.White, 0, 1);
+                largeFaint.Colour = Interpolation.ValueAt(0.8f, colour.NewValue, Colour4.White, 0, 1);
 
                 largeFaint.EdgeEffect = new EdgeEffectParameters
                 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitTarget.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitTarget.cs
index cf5931231ca2..d16f42789d50 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitTarget.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHitTarget.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -31,7 +30,7 @@ private void load(IScrollingInfo scrollingInfo)
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0.3f,
                     Blending = BlendingParameters.Additive,
-                    Colour = Color4.White
+                    Colour = Colour4.White
                 },
             };
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldBodyPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldBodyPiece.cs
index b0a14d27aba8..c378a426cb76 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldBodyPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldBodyPiece.cs
@@ -3,14 +3,12 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Skinning.Default;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -19,7 +17,7 @@ namespace osu.Game.Rulesets.Mania.Skinning.Argon
     /// </summary>
     public partial class ArgonHoldBodyPiece : CompositeDrawable, IHoldNoteBody
     {
-        protected readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        protected readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
 
         private Drawable background = null!;
         private ArgonHoldNoteHittingLayer hittingLayer = null!;
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHeadPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHeadPiece.cs
index b9cc73c75c47..9b7ccffd88a7 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHeadPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHeadPiece.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHittingLayer.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHittingLayer.cs
index 9e7afa8b9e76..44f060e3e57d 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHittingLayer.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteHittingLayer.cs
@@ -2,16 +2,14 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
-using osuTK.Graphics;
 using Box = osu.Framework.Graphics.Shapes.Box;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
     public partial class ArgonHoldNoteHittingLayer : Box
     {
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
         public readonly Bindable<bool> IsHitting = new Bindable<bool>();
 
         public ArgonHoldNoteHittingLayer()
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteTailPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteTailPiece.cs
index 3ec8fbfdb6dd..8d5bba8a4e81 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteTailPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonHoldNoteTailPiece.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +10,7 @@
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -22,7 +20,7 @@ internal partial class ArgonHoldNoteTailPiece : CompositeDrawable
         private DrawableHitObject? drawableObject { get; set; }
 
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         private readonly Box foreground;
         private readonly ArgonHoldNoteHittingLayer hittingLayer;
@@ -46,7 +44,7 @@ public ArgonHoldNoteTailPiece()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0), Colour4.Black),
+                            Colour = ColourInfo.GradientVertical(Colour4.Black.Opacity(0), Colour4.Black),
                             // Avoid ugly single pixel overlap.
                             Height = 0.9f,
                         },
@@ -111,7 +109,7 @@ private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
             Scale = new Vector2(1, direction.NewValue == ScrollingDirection.Up ? -1 : 1);
         }
 
-        private void onAccentChanged(ValueChangedEvent<Color4> accent)
+        private void onAccentChanged(ValueChangedEvent<Colour4> accent)
         {
             foreground.Colour = accent.NewValue.Darken(0.6f); // matches body
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonJudgementPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonJudgementPiece.cs
index bef8625ea231..aacc0a127d69 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonJudgementPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonJudgementPiece.cs
@@ -14,8 +14,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -183,7 +182,7 @@ public RingPiece(float thickness = 9)
 
                     Masking = true;
                     BorderThickness = thickness;
-                    BorderColour = Color4.White;
+                    BorderColour = Colour4.White;
 
                     Child = new Box
                     {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonKeyArea.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonKeyArea.cs
index 95e24f881155..06fa170e04aa 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonKeyArea.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonKeyArea.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -31,7 +29,7 @@ public partial class ArgonKeyArea : CompositeDrawable, IKeyBindingHandler<ManiaA
         private Container<Circle> bottomIcon = null!;
         private CircularContainer topIcon = null!;
 
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         [Resolved]
         private Column column { get; set; } = null!;
@@ -131,7 +129,7 @@ private void load(IScrollingInfo scrollingInfo)
                                 Size = new Vector2(22, 14),
                                 Masking = true,
                                 BorderThickness = 4,
-                                BorderColour = Color4.White,
+                                BorderColour = Colour4.White,
                                 EdgeEffect = new EdgeEffectParameters { Type = EdgeEffectType.Glow },
                                 Children = new Drawable[]
                                 {
@@ -186,7 +184,7 @@ public bool OnPressed(KeyBindingPressEvent<ManiaAction> e)
             if (e.Action != column.Action.Value) return false;
 
             const double lighting_fade_in_duration = 70;
-            Color4 lightingColour = getLightingColour();
+            Colour4 lightingColour = getLightingColour();
 
             background
                 .FlashColour(accentColour.Value.Lighten(0.8f), 200, Easing.OutQuint)
@@ -194,7 +192,7 @@ public bool OnPressed(KeyBindingPressEvent<ManiaAction> e)
                 .Then()
                 .FadeTo(0.8f, 500);
 
-            hitTargetLine.FadeColour(Color4.White, lighting_fade_in_duration, Easing.OutQuint);
+            hitTargetLine.FadeColour(Colour4.White, lighting_fade_in_duration, Easing.OutQuint);
             hitTargetLine.TransformTo(nameof(EdgeEffect), new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Glow,
@@ -210,7 +208,7 @@ public bool OnPressed(KeyBindingPressEvent<ManiaAction> e)
                 Radius = 20,
             }, lighting_fade_in_duration, Easing.OutQuint);
 
-            bottomIcon.FadeColour(Color4.White, lighting_fade_in_duration, Easing.OutQuint);
+            bottomIcon.FadeColour(Colour4.White, lighting_fade_in_duration, Easing.OutQuint);
 
             foreach (var circle in bottomIcon)
             {
@@ -231,7 +229,7 @@ public void OnReleased(KeyBindingReleaseEvent<ManiaAction> e)
 
             const double lighting_fade_out_duration = 800;
 
-            Color4 lightingColour = getLightingColour().Opacity(0);
+            Colour4 lightingColour = getLightingColour().Opacity(0);
 
             // background fades out faster than lighting elements to give better definition to the player.
             background.FadeTo(0.3f, 50, Easing.OutQuint)
@@ -267,6 +265,6 @@ public void OnReleased(KeyBindingReleaseEvent<ManiaAction> e)
             }
         }
 
-        private Color4 getLightingColour() => Interpolation.ValueAt(0.2f, accentColour.Value, Color4.White, 0, 1);
+        private Colour4 getLightingColour() => Interpolation.ValueAt(0.2f, accentColour.Value, Colour4.White, 0, 1);
     }
 }
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonNotePiece.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonNotePiece.cs
index 3a519283f100..b3f53d1b9f1f 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonNotePiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ArgonNotePiece.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -23,7 +21,7 @@ internal partial class ArgonNotePiece : CompositeDrawable
         public const float CORNER_RADIUS = 3.4f;
 
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         private readonly Box colouredBox;
 
@@ -40,7 +38,7 @@ public ArgonNotePiece()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0), Colour4.Black)
+                    Colour = ColourInfo.GradientVertical(Colour4.Black.Opacity(0), Colour4.Black)
                 },
                 new Container
                 {
@@ -103,7 +101,7 @@ private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
             Scale = new Vector2(1, direction.NewValue == ScrollingDirection.Up ? -1 : 1);
         }
 
-        private void onAccentChanged(ValueChangedEvent<Color4> accent)
+        private void onAccentChanged(ValueChangedEvent<Colour4> accent)
         {
             colouredBox.Colour = ColourInfo.GradientVertical(
                 accent.NewValue.Lighten(0.1f),
diff --git a/osu.Game.Rulesets.Mania/Skinning/Argon/ManiaArgonSkinTransformer.cs b/osu.Game.Rulesets.Mania/Skinning/Argon/ManiaArgonSkinTransformer.cs
index e8e274af7b66..b2046d2276a8 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Argon/ManiaArgonSkinTransformer.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Argon/ManiaArgonSkinTransformer.cs
@@ -11,8 +11,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Argon
 {
@@ -117,16 +116,16 @@ public ManiaArgonSkinTransformer(ISkin skin, IBeatmap beatmap)
             return base.GetDrawableComponent(lookup);
         }
 
-        private static readonly Color4 colour_special_column = new Color4(169, 106, 255, 255);
+        private static readonly Colour4 colour_special_column = new Colour4(169, 106, 255, 255);
 
         private const int total_colours = 6;
 
-        private static readonly Color4 colour_yellow = new Color4(255, 197, 40, 255);
-        private static readonly Color4 colour_orange = new Color4(252, 109, 1, 255);
-        private static readonly Color4 colour_pink = new Color4(213, 35, 90, 255);
-        private static readonly Color4 colour_purple = new Color4(203, 60, 236, 255);
-        private static readonly Color4 colour_cyan = new Color4(72, 198, 255, 255);
-        private static readonly Color4 colour_green = new Color4(100, 192, 92, 255);
+        private static readonly Colour4 colour_yellow = new Colour4(255, 197, 40, 255);
+        private static readonly Colour4 colour_orange = new Colour4(252, 109, 1, 255);
+        private static readonly Colour4 colour_pink = new Colour4(213, 35, 90, 255);
+        private static readonly Colour4 colour_purple = new Colour4(203, 60, 236, 255);
+        private static readonly Colour4 colour_cyan = new Colour4(72, 198, 255, 255);
+        private static readonly Colour4 colour_green = new Colour4(100, 192, 92, 255);
 
         public override IBindable<TValue>? GetConfig<TLookup, TValue>(TLookup lookup)
         {
@@ -155,14 +154,14 @@ public ManiaArgonSkinTransformer(ISkin skin, IBeatmap beatmap)
                     case LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour:
                         var colour = getColourForLayout(columnIndex, stage);
 
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(colour));
+                        return SkinUtils.As<TValue>(new Bindable<Colour4>(colour));
                 }
             }
 
             return base.GetConfig<TLookup, TValue>(lookup);
         }
 
-        private Color4 getColourForLayout(int columnIndex, StageDefinition stage)
+        private Colour4 getColourForLayout(int columnIndex, StageDefinition stage)
         {
             // Account for cases like dual-stage (assume that all stages have the same column count for now).
             columnIndex %= stage.Columns;
diff --git a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBarLine.cs b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBarLine.cs
index 05fba1241f58..52a18dfbff19 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBarLine.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBarLine.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBodyPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBodyPiece.cs
index 67792e9027b9..1003b1e90e8d 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBodyPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultBodyPiece.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,7 +11,6 @@
 using osu.Framework.Layout;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Default
 {
@@ -21,7 +19,7 @@ namespace osu.Game.Rulesets.Mania.Skinning.Default
     /// </summary>
     public partial class DefaultBodyPiece : CompositeDrawable, IHoldNoteBody
     {
-        protected readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+        protected readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
         protected readonly IBindable<bool> IsHitting = new Bindable<bool>();
 
         protected Drawable Background { get; private set; } = null!;
@@ -62,11 +60,11 @@ private void load(DrawableHitObject? drawableObject)
             IsHitting = { BindTarget = IsHitting }
         };
 
-        private void onAccentChanged(ValueChangedEvent<Color4> accent) => Background.Colour = accent.NewValue.Opacity(0.7f);
+        private void onAccentChanged(ValueChangedEvent<Colour4> accent) => Background.Colour = accent.NewValue.Opacity(0.7f);
 
         private partial class ForegroundPiece : CompositeDrawable
         {
-            public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+            public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>();
             public readonly IBindable<bool> IsHitting = new Bindable<bool>();
 
             private readonly LayoutValue subtractionCache = new LayoutValue(Invalidation.DrawSize);
@@ -96,7 +94,7 @@ private void load()
                         {
                             RelativeSizeAxes = Axes.Both,
                             // This is needed because we're blending with another object
-                            BackgroundColour = Color4.White.Opacity(0),
+                            BackgroundColour = Colour4.White.Opacity(0),
                             // The 'hole' is achieved by subtracting the result of this container with the parent
                             Blending = new BlendingParameters { AlphaEquation = BlendingEquation.ReverseSubtract },
                             Child = subtractionLayer = new CircularContainer
@@ -118,10 +116,10 @@ private void load()
                 };
 
                 AccentColour.BindValueChanged(onAccentChanged, true);
-                IsHitting.BindValueChanged(_ => onAccentChanged(new ValueChangedEvent<Color4>(AccentColour.Value, AccentColour.Value)), true);
+                IsHitting.BindValueChanged(_ => onAccentChanged(new ValueChangedEvent<Colour4>(AccentColour.Value, AccentColour.Value)), true);
             }
 
-            private void onAccentChanged(ValueChangedEvent<Color4> accent)
+            private void onAccentChanged(ValueChangedEvent<Colour4> accent)
             {
                 foregroundBuffer.Colour = accent.NewValue.Opacity(0.5f);
 
@@ -150,7 +148,7 @@ protected override void Update()
                     subtractionLayer.Height = Math.Max(0, DrawHeight - DrawWidth);
                     subtractionLayer.EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Type = EdgeEffectType.Glow,
                         Radius = DrawWidth
                     };
diff --git a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultNotePiece.cs b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultNotePiece.cs
index e78933558462..fefa23e1800d 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Default/DefaultNotePiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Default/DefaultNotePiece.cs
@@ -3,14 +3,12 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Default
 {
@@ -22,7 +20,7 @@ internal partial class DefaultNotePiece : CompositeDrawable
         public const float NOTE_HEIGHT = 12;
 
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         private readonly Box colouredBox;
 
@@ -69,7 +67,7 @@ private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
                 : Anchor.BottomCentre;
         }
 
-        private void onAccentChanged(ValueChangedEvent<Color4> accent)
+        private void onAccentChanged(ValueChangedEvent<Colour4> accent)
         {
             colouredBox.Colour = accent.NewValue.Lighten(0.9f);
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Default/ManiaTrianglesSkinTransformer.cs b/osu.Game.Rulesets.Mania/Skinning/Default/ManiaTrianglesSkinTransformer.cs
index 3e0fe8ed4b3a..db4f71fce7e3 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Default/ManiaTrianglesSkinTransformer.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Default/ManiaTrianglesSkinTransformer.cs
@@ -6,7 +6,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Default
 {
@@ -20,9 +20,9 @@ public ManiaTrianglesSkinTransformer(ISkin skin, IBeatmap beatmap)
             this.beatmap = (ManiaBeatmap)beatmap;
         }
 
-        private readonly Color4 colourEven = new Color4(6, 84, 0, 255);
-        private readonly Color4 colourOdd = new Color4(94, 0, 57, 255);
-        private readonly Color4 colourSpecial = new Color4(0, 48, 63, 255);
+        private readonly Colour4 colourEven = new Colour4(6, 84, 0, 255);
+        private readonly Colour4 colourOdd = new Colour4(94, 0, 57, 255);
+        private readonly Colour4 colourSpecial = new Colour4(0, 48, 63, 255);
 
         public override IBindable<TValue>? GetConfig<TLookup, TValue>(TLookup lookup)
         {
@@ -38,10 +38,10 @@ public ManiaTrianglesSkinTransformer(ISkin skin, IBeatmap beatmap)
                         int columnInStage = column % stage.Columns;
 
                         if (stage.IsSpecialColumn(columnInStage))
-                            return SkinUtils.As<TValue>(new Bindable<Color4>(colourSpecial));
+                            return SkinUtils.As<TValue>(new Bindable<Colour4>(colourSpecial));
 
                         int distanceToEdge = Math.Min(columnInStage, (stage.Columns - 1) - columnInStage);
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(distanceToEdge % 2 == 0 ? colourOdd : colourEven));
+                        return SkinUtils.As<TValue>(new Bindable<Colour4>(distanceToEdge % 2 == 0 ? colourOdd : colourEven));
                 }
             }
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBarLine.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBarLine.cs
index ce48c49b2e0f..3ca01ecf7808 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBarLine.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBarLine.cs
@@ -6,8 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -20,7 +19,7 @@ private void load(ISkinSource skin)
 
             RelativeSizeAxes = Axes.X;
             Height = 1.2f * skinHeight;
-            Colour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.BarLineColour)?.Value ?? Color4.White;
+            Colour = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.BarLineColour)?.Value ?? Colour4.White;
 
             // Avoid flickering due to no anti-aliasing of boxes by default.
             var edgeSmoothness = new Vector2(0.3f);
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBodyPiece.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBodyPiece.cs
index 7c8cf0d6a30a..9a4f6ee2a31d 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBodyPiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyBodyPiece.cs
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyColumnBackground.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyColumnBackground.cs
index 914ed79234bd..d50bde5bc1a1 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyColumnBackground.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyColumnBackground.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -35,8 +34,8 @@ private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
             float lightPosition = GetColumnSkinConfig<float>(skin, LegacyManiaSkinConfigurationLookups.LightPosition)?.Value
                                   ?? 0;
 
-            Color4 lightColour = GetColumnSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLightColour)?.Value
-                                 ?? Color4.White;
+            Colour4 lightColour = GetColumnSkinConfig<Colour4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLightColour)?.Value
+                                  ?? Colour4.White;
 
             int lightFramePerSecond = skin.GetManiaSkinConfig<int>(LegacyManiaSkinConfigurationLookups.LightFramePerSecond)?.Value ?? 60;
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitExplosion.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitExplosion.cs
index 193668f9ddb5..2bcdb2483074 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitExplosion.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitExplosion.cs
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitTarget.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitTarget.cs
index 3a08a9d818f8..272141678ce4 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitTarget.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyHitTarget.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -29,8 +28,8 @@ private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
             bool showJudgementLine = skin.GetManiaSkinConfig<bool>(LegacyManiaSkinConfigurationLookups.ShowJudgementLine)?.Value
                                      ?? true;
 
-            Color4 lineColour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.JudgementLineColour)?.Value
-                                ?? Color4.White;
+            Colour4 lineColour = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.JudgementLineColour)?.Value
+                                 ?? Colour4.White;
 
             InternalChild = directionContainer = new Container
             {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyKeyArea.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyKeyArea.cs
index 8f9a2d7e7448..fc4dbb8a08b8 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyKeyArea.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyKeyArea.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyManiaComboCounter.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyManiaComboCounter.cs
index 889e6326f7e4..349f217bfcd3 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyManiaComboCounter.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyManiaComboCounter.cs
@@ -10,8 +10,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -70,7 +69,7 @@ private void load(ISkinSource skin, ScoreProcessor scoreProcessor)
                             BypassAutoSizeAxes = Axes.Both,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
-                            Colour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ComboBreakColour)?.Value ?? Color4.Red,
+                            Colour = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.ComboBreakColour)?.Value ?? Colour4.Red,
                         },
                         displayedCountText = new LegacySpriteText(LegacyFont.Combo)
                         {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyNotePiece.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyNotePiece.cs
index c9c655ef7dcc..d2fb7d3f6331 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyNotePiece.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyNotePiece.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageBackground.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageBackground.cs
index 71618a4bc368..249bfb4040ce 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageBackground.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageBackground.cs
@@ -11,8 +11,7 @@
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -100,8 +99,8 @@ private void load(ISkinSource skin)
                 bool hasLeftLine = leftLineWidth > 0;
                 bool hasRightLine = (rightLineWidth > 0 && skin.GetConfig<SkinConfiguration.LegacySetting, decimal>(SkinConfiguration.LegacySetting.Version)?.Value >= 2.4m) || isLastColumn;
 
-                Color4 lineColour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ColumnLineColour, columnIndex)?.Value ?? Color4.White;
-                Color4 backgroundColour = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour, columnIndex)?.Value ?? Color4.Black;
+                Colour4 lineColour = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.ColumnLineColour, columnIndex)?.Value ?? Colour4.White;
+                Colour4 backgroundColour = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour, columnIndex)?.Value ?? Colour4.Black;
 
                 InternalChildren = new Drawable[]
                 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageForeground.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageForeground.cs
index 680198c1a60f..520c68ee1ca2 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageForeground.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/LegacyStageForeground.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaClassicSkinTransformer.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaClassicSkinTransformer.cs
index be3372fe587a..ed655a852762 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaClassicSkinTransformer.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaClassicSkinTransformer.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Bindables;
 using osu.Game.Beatmaps;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
@@ -28,7 +28,7 @@ public ManiaClassicSkinTransformer(ISkin skin, IBeatmap beatmap)
                 switch (maniaLookup.Lookup)
                 {
                     case LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour:
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(Color4.Black));
+                        return SkinUtils.As<TValue>(new Bindable<Colour4>(Colour4.Black));
                 }
             }
 
diff --git a/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaLegacySkinTransformer.cs b/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaLegacySkinTransformer.cs
index 690705664d2f..c77b755198e9 100644
--- a/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaLegacySkinTransformer.cs
+++ b/osu.Game.Rulesets.Mania/Skinning/Legacy/ManiaLegacySkinTransformer.cs
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Mania/UI/Column.cs b/osu.Game.Rulesets.Mania/UI/Column.cs
index dec30043f573..6cd7df0de951 100644
--- a/osu.Game.Rulesets.Mania/UI/Column.cs
+++ b/osu.Game.Rulesets.Mania/UI/Column.cs
@@ -21,8 +21,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -56,7 +55,7 @@ public partial class Column : ScrollingPlayfield, IKeyBindingHandler<ManiaAction
         /// </summary>
         public readonly bool IsSpecial;
 
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>(Color4.Black);
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>(Colour4.Black);
 
         private IBindable<bool> touchOverlay = null!;
 
@@ -128,7 +127,7 @@ private void load(GameHost host, ManiaRulesetConfigManager? rulesetConfig)
 
         private void onSourceChanged()
         {
-            AccentColour.Value = skin.GetManiaSkinConfig<Color4>(LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour, Index)?.Value ?? Color4.Black;
+            AccentColour.Value = skin.GetManiaSkinConfig<Colour4>(LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour, Index)?.Value ?? Colour4.Black;
 
             leftColumnSpacing = skin.GetConfig<ManiaSkinConfigurationLookup, float>(
                                         new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.LeftColumnSpacing, Index))
diff --git a/osu.Game.Rulesets.Mania/UI/ColumnFlow.cs b/osu.Game.Rulesets.Mania/UI/ColumnFlow.cs
index 03e5791519e7..0be9c3753bc7 100644
--- a/osu.Game.Rulesets.Mania/UI/ColumnFlow.cs
+++ b/osu.Game.Rulesets.Mania/UI/ColumnFlow.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Mania.Configuration;
 using osu.Game.Rulesets.Mania.Skinning;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/Components/DefaultColumnBackground.cs b/osu.Game.Rulesets.Mania/UI/Components/DefaultColumnBackground.cs
index fe34712c6815..be3d8a6f773c 100644
--- a/osu.Game.Rulesets.Mania/UI/Components/DefaultColumnBackground.cs
+++ b/osu.Game.Rulesets.Mania/UI/Components/DefaultColumnBackground.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -13,7 +12,6 @@
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.UI.Components
 {
@@ -21,8 +19,8 @@ public partial class DefaultColumnBackground : CompositeDrawable, IKeyBindingHan
     {
         private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
 
-        private Color4 brightColour;
-        private Color4 dimColour;
+        private Colour4 brightColour;
+        private Colour4 dimColour;
 
         private Box background;
         private Box backgroundOverlay;
@@ -30,7 +28,7 @@ public partial class DefaultColumnBackground : CompositeDrawable, IKeyBindingHan
         [Resolved]
         private Column column { get; set; }
 
-        private Bindable<Color4> accentColour;
+        private Bindable<Colour4> accentColour;
 
         public DefaultColumnBackground()
         {
diff --git a/osu.Game.Rulesets.Mania/UI/Components/DefaultHitTarget.cs b/osu.Game.Rulesets.Mania/UI/Components/DefaultHitTarget.cs
index bfc5fbc8f739..ed1166fd95ef 100644
--- a/osu.Game.Rulesets.Mania/UI/Components/DefaultHitTarget.cs
+++ b/osu.Game.Rulesets.Mania/UI/Components/DefaultHitTarget.cs
@@ -5,14 +5,12 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Mania.Skinning.Default;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.UI.Components
 {
@@ -25,7 +23,7 @@ public partial class DefaultHitTarget : CompositeDrawable
         private Container hitTargetLine;
         private Drawable hitTargetBar;
 
-        private Bindable<Color4> accentColour;
+        private Bindable<Colour4> accentColour;
 
         [Resolved]
         private Column column { get; set; }
@@ -45,7 +43,7 @@ private void load(IScrollingInfo scrollingInfo)
                     RelativeSizeAxes = Axes.X,
                     Height = DefaultNotePiece.NOTE_HEIGHT,
                     Alpha = 0.6f,
-                    Colour = Color4.Black
+                    Colour = Colour4.Black
                 },
                 hitTargetLine = new Container
                 {
diff --git a/osu.Game.Rulesets.Mania/UI/Components/DefaultKeyArea.cs b/osu.Game.Rulesets.Mania/UI/Components/DefaultKeyArea.cs
index 77ab9f60c122..3a8a49b96ad4 100644
--- a/osu.Game.Rulesets.Mania/UI/Components/DefaultKeyArea.cs
+++ b/osu.Game.Rulesets.Mania/UI/Components/DefaultKeyArea.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -14,8 +13,7 @@
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.UI.Components
 {
@@ -30,7 +28,7 @@ public partial class DefaultKeyArea : CompositeDrawable, IKeyBindingHandler<Mani
         private Container keyIcon;
         private Drawable gradient;
 
-        private Bindable<Color4> accentColour;
+        private Bindable<Colour4> accentColour;
 
         [Resolved]
         private Column column { get; set; }
@@ -63,7 +61,7 @@ private void load(IScrollingInfo scrollingInfo)
                         Masking = true,
                         CornerRadius = key_icon_corner_radius,
                         BorderThickness = 2,
-                        BorderColour = Color4.White, // Not true
+                        BorderColour = Colour4.White, // Not true
                         Children = new[]
                         {
                             new Box
@@ -99,14 +97,14 @@ private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
                 keyIcon.Anchor = Anchor.BottomCentre;
                 keyIcon.Y = -20;
                 directionContainer.Anchor = directionContainer.Origin = Anchor.TopLeft;
-                gradient.Colour = ColourInfo.GradientVertical(Color4.Black, Color4.Black.Opacity(0));
+                gradient.Colour = ColourInfo.GradientVertical(Colour4.Black, Colour4.Black.Opacity(0));
             }
             else
             {
                 keyIcon.Anchor = Anchor.TopCentre;
                 keyIcon.Y = 20;
                 directionContainer.Anchor = directionContainer.Origin = Anchor.BottomLeft;
-                gradient.Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0), Color4.Black);
+                gradient.Colour = ColourInfo.GradientVertical(Colour4.Black.Opacity(0), Colour4.Black);
             }
         }
 
diff --git a/osu.Game.Rulesets.Mania/UI/Components/DefaultStageBackground.cs b/osu.Game.Rulesets.Mania/UI/Components/DefaultStageBackground.cs
index a5c6f1090726..86f8b8c2fe9d 100644
--- a/osu.Game.Rulesets.Mania/UI/Components/DefaultStageBackground.cs
+++ b/osu.Game.Rulesets.Mania/UI/Components/DefaultStageBackground.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.UI.Components
 {
@@ -23,7 +22,7 @@ private void load()
             {
                 Name = "Background",
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.Black
+                Colour = Colour4.Black
             };
         }
     }
diff --git a/osu.Game.Rulesets.Mania/UI/DefaultHitExplosion.cs b/osu.Game.Rulesets.Mania/UI/DefaultHitExplosion.cs
index e5889516242e..3c2df897e83d 100644
--- a/osu.Game.Rulesets.Mania/UI/DefaultHitExplosion.cs
+++ b/osu.Game.Rulesets.Mania/UI/DefaultHitExplosion.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -13,8 +12,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Skinning.Default;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -34,7 +32,7 @@ public partial class DefaultHitExplosion : CompositeDrawable, IHitExplosion
         private CircularContainer mainGlow2;
         private CircularContainer mainGlow3;
 
-        private Bindable<Color4> accentColour;
+        private Bindable<Colour4> accentColour;
 
         public DefaultHitExplosion()
         {
@@ -102,28 +100,28 @@ private void load(IScrollingInfo scrollingInfo)
                 largeFaint.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Interpolation.ValueAt(0.1f, colour.NewValue, Color4.White, 0, 1).Opacity(0.3f),
+                    Colour = Interpolation.ValueAt(0.1f, colour.NewValue, Colour4.White, 0, 1).Opacity(0.3f),
                     Roundness = 160,
                     Radius = 200,
                 };
                 mainGlow1.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Interpolation.ValueAt(0.6f, colour.NewValue, Color4.White, 0, 1),
+                    Colour = Interpolation.ValueAt(0.6f, colour.NewValue, Colour4.White, 0, 1),
                     Roundness = 20,
                     Radius = 50,
                 };
                 mainGlow2.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Interpolation.ValueAt(0.4f, colour.NewValue, Color4.White, 0, 1),
+                    Colour = Interpolation.ValueAt(0.4f, colour.NewValue, Colour4.White, 0, 1),
                     Roundness = roundness,
                     Radius = 40,
                 };
                 mainGlow3.EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Interpolation.ValueAt(0.4f, colour.NewValue, Color4.White, 0, 1),
+                    Colour = Interpolation.ValueAt(0.4f, colour.NewValue, Colour4.White, 0, 1),
                     Roundness = roundness,
                     Radius = 40,
                 };
diff --git a/osu.Game.Rulesets.Mania/UI/DefaultManiaJudgementPiece.cs b/osu.Game.Rulesets.Mania/UI/DefaultManiaJudgementPiece.cs
index 4872fe50497d..a6edd4fba57f 100644
--- a/osu.Game.Rulesets.Mania/UI/DefaultManiaJudgementPiece.cs
+++ b/osu.Game.Rulesets.Mania/UI/DefaultManiaJudgementPiece.cs
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/DrawableManiaJudgement.cs b/osu.Game.Rulesets.Mania/UI/DrawableManiaJudgement.cs
index 20248ab6bc10..f21b8907b848 100644
--- a/osu.Game.Rulesets.Mania/UI/DrawableManiaJudgement.cs
+++ b/osu.Game.Rulesets.Mania/UI/DrawableManiaJudgement.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/ManiaPlayfield.cs b/osu.Game.Rulesets.Mania/UI/ManiaPlayfield.cs
index 0089154d3d1a..e49de70d13a0 100644
--- a/osu.Game.Rulesets.Mania/UI/ManiaPlayfield.cs
+++ b/osu.Game.Rulesets.Mania/UI/ManiaPlayfield.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/ManiaPlayfieldAdjustmentContainer.cs b/osu.Game.Rulesets.Mania/UI/ManiaPlayfieldAdjustmentContainer.cs
index 1f2201ade47b..3bf4d8962ca0 100644
--- a/osu.Game.Rulesets.Mania/UI/ManiaPlayfieldAdjustmentContainer.cs
+++ b/osu.Game.Rulesets.Mania/UI/ManiaPlayfieldAdjustmentContainer.cs
@@ -1,11 +1,11 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/ManiaReplayRecorder.cs b/osu.Game.Rulesets.Mania/UI/ManiaReplayRecorder.cs
index 65dc43af0ba0..6417137260b7 100644
--- a/osu.Game.Rulesets.Mania/UI/ManiaReplayRecorder.cs
+++ b/osu.Game.Rulesets.Mania/UI/ManiaReplayRecorder.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/ManiaTouchInputArea.cs b/osu.Game.Rulesets.Mania/UI/ManiaTouchInputArea.cs
index 7c5f759833bf..b7899677a5b4 100644
--- a/osu.Game.Rulesets.Mania/UI/ManiaTouchInputArea.cs
+++ b/osu.Game.Rulesets.Mania/UI/ManiaTouchInputArea.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Configuration;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Mania/UI/PlayfieldCoveringWrapper.cs b/osu.Game.Rulesets.Mania/UI/PlayfieldCoveringWrapper.cs
index d8d9705530ae..4de63620eaff 100644
--- a/osu.Game.Rulesets.Mania/UI/PlayfieldCoveringWrapper.cs
+++ b/osu.Game.Rulesets.Mania/UI/PlayfieldCoveringWrapper.cs
@@ -1,19 +1,17 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
 using System.ComponentModel;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Rulesets.Mania.UI
@@ -81,8 +79,8 @@ public PlayfieldCoveringWrapper(Drawable content)
                                 RelativePositionAxes = Axes.Both,
                                 Height = 0.25f,
                                 Colour = ColourInfo.GradientVertical(
-                                    Color4.White.Opacity(0f),
-                                    Color4.White.Opacity(1f)
+                                    Colour4.White.Opacity(0f),
+                                    Colour4.White.Opacity(1f)
                                 )
                             },
                             filled = new Box
diff --git a/osu.Game.Rulesets.Mania/UI/Stage.cs b/osu.Game.Rulesets.Mania/UI/Stage.cs
index ef356cd90747..0dc733751de3 100644
--- a/osu.Game.Rulesets.Mania/UI/Stage.cs
+++ b/osu.Game.Rulesets.Mania/UI/Stage.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -21,7 +21,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckLowDiffOverlapsTest.cs b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckLowDiffOverlapsTest.cs
index d035d2bc1712..7ff4c704483d 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckLowDiffOverlapsTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckLowDiffOverlapsTest.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Moq;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Edit.Checks;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor.Checks
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOffscreenObjectsTest.cs b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOffscreenObjectsTest.cs
index 5db6dc6cdd82..3f78bcfe4a71 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOffscreenObjectsTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOffscreenObjectsTest.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Edit;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor.Checks
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTimeDistanceEqualityTest.cs b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTimeDistanceEqualityTest.cs
index 348243326df5..bedcb73da3ac 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTimeDistanceEqualityTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTimeDistanceEqualityTest.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Moq;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Edit.Checks;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor.Checks
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTooShortSlidersTest.cs b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTooShortSlidersTest.cs
index 2ec3637bb7ef..4cec750166c1 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTooShortSlidersTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckTooShortSlidersTest.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Edit.Checks;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor.Checks
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneHitCircleSelectionBlueprint.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneHitCircleSelectionBlueprint.cs
index 9ffbd25a400c..584264fd72b7 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneHitCircleSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneHitCircleSelectionBlueprint.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectBeatSnap.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectBeatSnap.cs
index 56894242c8b2..9a225a52de1b 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectBeatSnap.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectBeatSnap.cs
@@ -9,7 +9,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Tests.Beatmaps;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectMerging.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectMerging.cs
index fd711e543cf8..23c7564cd8d5 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectMerging.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectMerging.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -9,8 +10,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Edit;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectObjectSnap.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectObjectSnap.cs
index 340f1f2f14de..cf0ed14f5f0b 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectObjectSnap.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectObjectSnap.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -11,8 +12,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuComposerSelection.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuComposerSelection.cs
index 4e6cad1dca4f..8a4077d066c9 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuComposerSelection.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuComposerSelection.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.UserInterface;
@@ -17,8 +18,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuDistanceSnapGrid.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuDistanceSnapGrid.cs
index b70f93291328..1565762a6589 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuDistanceSnapGrid.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuDistanceSnapGrid.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -23,8 +24,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
@@ -97,7 +96,7 @@ public void Setup() => Schedule(() =>
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.SlateGray
+                    Colour = Colour4.SlateGray
                 },
                 cursor = new SnappingCursorContainer { GetSnapPosition = v => grid.GetSnappedPosition(grid.ToLocalSpace(v)).position },
                 grid = new OsuDistanceSnapGrid(new HitCircle { Position = grid_position }),
@@ -175,7 +174,7 @@ public void TestReferenceObjectNotOnSnapGrid()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.SlateGray
+                        Colour = Colour4.SlateGray
                     },
                     cursor = new SnappingCursorContainer { GetSnapPosition = v => grid.GetSnappedPosition(grid.ToLocalSpace(v)).position },
                     grid = new OsuDistanceSnapGrid(new HitCircle
@@ -217,7 +216,7 @@ public void TestLimitedDistance()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.SlateGray
+                        Colour = Colour4.SlateGray
                     },
                     cursor = new SnappingCursorContainer { GetSnapPosition = v => grid.GetSnappedPosition(grid.ToLocalSpace(v)).position },
                     grid = new OsuDistanceSnapGrid(new HitCircle { Position = grid_position }, new HitCircle { StartTime = 200 }),
@@ -255,7 +254,7 @@ public SnappingCursorContainer()
                 {
                     Origin = Anchor.Centre,
                     Size = new Vector2(50),
-                    Colour = Color4.Red
+                    Colour = Colour4.Red
                 };
             }
 
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorGrids.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorGrids.cs
index b9258f0053ca..2497b9f73cad 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorGrids.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorGrids.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -14,8 +15,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Visual;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorSelectInvalidPath.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorSelectInvalidPath.cs
index 43dae3800454..03a656c3ed9f 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorSelectInvalidPath.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuEditorSelectInvalidPath.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -8,7 +9,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuReverseSelection.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuReverseSelection.cs
index 28c1577fcb04..d88214dc3965 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuReverseSelection.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneOsuReverseSelection.cs
@@ -3,13 +3,13 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePathControlPointVisualiser.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePathControlPointVisualiser.cs
index 93eb76aba610..5f180e66d97a 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePathControlPointVisualiser.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePathControlPointVisualiser.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
@@ -14,8 +15,7 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePreciseRotation.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePreciseRotation.cs
index d14bd1fc87c8..f8dd74c29afa 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePreciseRotation.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestScenePreciseRotation.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
@@ -12,8 +13,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Components.RadioButtons;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderChangeStates.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderChangeStates.cs
index 0b8f2f741760..40b080a050f0 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderChangeStates.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderChangeStates.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderControlPointPiece.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderControlPointPiece.cs
index 99ced30ffe92..3eb426c5a708 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderControlPointPiece.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderControlPointPiece.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using Humanizer;
 using NUnit.Framework;
 using osu.Framework.Testing;
@@ -18,8 +19,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderDrawing.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderDrawing.cs
index 74474c0b6ecd..2d9f10cc3697 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderDrawing.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderDrawing.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +16,6 @@
 using osu.Game.Screens.Edit.Components.RadioButtons;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderLengthValidity.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderLengthValidity.cs
index 931c8c9e6362..0ffd5c3dbbd9 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderLengthValidity.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderLengthValidity.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -13,8 +14,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderPlacementBlueprint.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderPlacementBlueprint.cs
index 8835254c48a8..0bd53916d843 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderPlacementBlueprint.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Input;
 using osu.Framework.Testing;
@@ -16,8 +17,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderReversal.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderReversal.cs
index ffaa422efeab..dc0f0a648cfa 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderReversal.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderReversal.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -13,8 +14,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSelectionBlueprint.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSelectionBlueprint.cs
index f0f969b15b9c..7c2054284552 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSelectionBlueprint.cs
@@ -13,8 +13,8 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSnapping.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSnapping.cs
index 541fefb3a668..efaffdf46461 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSnapping.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSnapping.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Input.Events;
 using osu.Framework.Testing;
@@ -21,8 +22,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSplitting.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSplitting.cs
index e435b246d40e..d62252f08859 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSplitting.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderSplitting.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
@@ -15,7 +16,6 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderStreamConversion.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderStreamConversion.cs
index a162d9a49156..4ead2836b070 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderStreamConversion.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderStreamConversion.cs
@@ -4,14 +4,14 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderVelocityAdjust.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderVelocityAdjust.cs
index 175cbeca6e7a..685405101fff 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderVelocityAdjust.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderVelocityAdjust.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Input;
 using osu.Framework.Testing;
@@ -14,8 +15,6 @@
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSpinnerSelectionBlueprint.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSpinnerSelectionBlueprint.cs
index 8468995e86ae..ce28c8e73daf 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSpinnerSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSpinnerSelectionBlueprint.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneToolSwitching.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneToolSwitching.cs
index d5ab349a16b5..1dbb881197db 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneToolSwitching.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSceneToolSwitching.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/TestSliderScaling.cs b/osu.Game.Rulesets.Osu.Tests/Editor/TestSliderScaling.cs
index 4a1935061946..bf7fc839edab 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/TestSliderScaling.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/TestSliderScaling.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Framework.Graphics.Primitives;
@@ -17,8 +18,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAlternate.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAlternate.cs
index a924fe7fc110..545a5adaaa30 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAlternate.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAlternate.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Timing;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutopilot.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutopilot.cs
index 37b31d1d1a66..39849fcee7f5 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutopilot.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutopilot.cs
@@ -3,7 +3,7 @@
 
 using NUnit.Framework;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.cs
index 8786b17b92c3..df7d7c3c5a3a 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Testing;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModFlashlight.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModFlashlight.cs
index f4f7f9d44b7f..09bd8ad57391 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModFlashlight.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModFlashlight.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Rulesets.Mods;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs
index c513f98f211f..6bed85e9115a 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs
@@ -3,13 +3,13 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModMirror.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModMirror.cs
index 076cb9ae1556..e3612831b534 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModMirror.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModMirror.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModNoScope.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModNoScope.cs
index a4eb818e9a54..377f4434a25b 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModNoScope.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModNoScope.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Testing;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModPerfect.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModPerfect.cs
index 8498e53bf0d4..549541e4b29f 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModPerfect.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModPerfect.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRandom.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRandom.cs
index ece4b94b8a18..3aebb8d6ebaa 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRandom.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRandom.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRelax.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRelax.cs
index b4298344b8e1..def11b0f7865 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRelax.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModRelax.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Online.API.Requests.Responses;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Replays;
 using osu.Game.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSingleTap.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSingleTap.cs
index b0be70e85e63..66265593d08d 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSingleTap.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSingleTap.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Timing;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSpunOut.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSpunOut.cs
index 3706b9ac0758..cf0a41d484b7 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSpunOut.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSpunOut.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModStrictTracking.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModStrictTracking.cs
index 170d9830f269..9cc7804edbd4 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModStrictTracking.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModStrictTracking.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSuddenDeath.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSuddenDeath.cs
index 23dd2123c353..a56f648bf0a2 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSuddenDeath.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModSuddenDeath.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModTouchDevice.cs b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModTouchDevice.cs
index 8c814317700e..29c2512774dc 100644
--- a/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModTouchDevice.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModTouchDevice.cs
@@ -20,7 +20,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/OsuHitObjectGenerationUtilsTest.cs b/osu.Game.Rulesets.Osu.Tests/OsuHitObjectGenerationUtilsTest.cs
index 77ef4627cbc1..5f7debd19b3f 100644
--- a/osu.Game.Rulesets.Osu.Tests/OsuHitObjectGenerationUtilsTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/OsuHitObjectGenerationUtilsTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Osu.Utils;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/SpinFramesGenerator.cs b/osu.Game.Rulesets.Osu.Tests/SpinFramesGenerator.cs
index e6dc72033ae5..c14c716a9b97 100644
--- a/osu.Game.Rulesets.Osu.Tests/SpinFramesGenerator.cs
+++ b/osu.Game.Rulesets.Osu.Tests/SpinFramesGenerator.cs
@@ -3,9 +3,9 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestPlayfieldBorder.cs b/osu.Game.Rulesets.Osu.Tests/TestPlayfieldBorder.cs
index 323df75dafbd..a5e004ae288e 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestPlayfieldBorder.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestPlayfieldBorder.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.UI;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneAccuracyHeatmap.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneAccuracyHeatmap.cs
index 5524af206107..79efc5072e5f 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneAccuracyHeatmap.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneAccuracyHeatmap.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -15,8 +16,6 @@
 using osu.Game.Scoring;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -44,7 +43,7 @@ public void Setup() => Schedule(() =>
                 object1 = new BorderCircle
                 {
                     Position = new Vector2(256, 192),
-                    Colour = Color4.Yellow,
+                    Colour = Colour4.Yellow,
                 },
                 object2 = new BorderCircle
                 {
@@ -135,7 +134,7 @@ public BorderCircle()
 
                 Masking = true;
                 BorderThickness = 2;
-                BorderColour = Color4.White;
+                BorderColour = Colour4.White;
 
                 InternalChildren = new Drawable[]
                 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneAimErrorMeter.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneAimErrorMeter.cs
index 9e01fc98ca03..7cdec7792680 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneAimErrorMeter.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneAimErrorMeter.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -16,8 +17,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -82,10 +81,10 @@ public void SetupSteps() => AddStep("Create components", () =>
                 {
                     Size = new Vector2(2 * OsuHitObject.OBJECT_RADIUS),
                     Position = new Vector2(256, 192),
-                    Colour = Color4.Yellow,
+                    Colour = Colour4.Yellow,
                     Masking = true,
                     BorderThickness = 2,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     Children = new Drawable[]
                     {
                         new Box
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneCursorParticles.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneCursorParticles.cs
index fd947343e4b4..bc8bae798b7c 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneCursorParticles.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneCursorParticles.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Testing;
@@ -17,8 +18,7 @@
 using osu.Game.Rulesets.Osu.Skinning.Legacy;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneCursorTrail.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneCursorTrail.cs
index a8a65f7edb34..a53eface4b89 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneCursorTrail.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneCursorTrail.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -23,7 +24,6 @@
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneDrawableJudgementSliderTicks.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneDrawableJudgementSliderTicks.cs
index 5843a9233c5c..c7c6e359967f 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneDrawableJudgementSliderTicks.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneDrawableJudgementSliderTicks.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs
index 28c9d71139e5..c637adfc4258 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables.Connections;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursor.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursor.cs
index 98113a651389..75491d54f44d 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursor.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursor.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Sample;
@@ -25,7 +26,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
 using osu.Game.Tests.Gameplay;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursorSizeChange.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursorSizeChange.cs
index c1ee76ca9d95..7c1e419d41b5 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursorSizeChange.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursorSizeChange.cs
@@ -7,7 +7,7 @@
 using osu.Game.Configuration;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircle.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircle.cs
index abe950f9bbd3..cc9472302b6e 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircle.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircle.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleApplication.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleApplication.cs
index bcbff2001664..9cad36bb7201 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleApplication.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleApplication.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Timing;
 using osu.Game.Beatmaps;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleArea.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleArea.cs
index 5cac9843b8d2..126ed833af98 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleArea.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleArea.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLateFade.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLateFade.cs
index 723a7e800028..958ac6f78c88 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLateFade.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLateFade.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Game.Beatmaps;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLongCombo.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLongCombo.cs
index bfb31d5b3169..41a410e04bcc 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLongCombo.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneHitCircleLongCombo.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyBeatmapSkin.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyBeatmapSkin.cs
index e70d45fb4589..4d136a33dcff 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyBeatmapSkin.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyBeatmapSkin.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -16,8 +17,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Skinning;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -110,7 +110,7 @@ public void TestComboOffsetWithIgnoredBeatmapColours(bool useBeatmapSkin)
                 (i, _) => i + 1);
         }
 
-        private void assertCorrectObjectComboColours(string description, Color4[] expectedColours, Func<int, OsuHitObject, int> nextExpectedComboIndex)
+        private void assertCorrectObjectComboColours(string description, Colour4[] expectedColours, Func<int, OsuHitObject, int> nextExpectedComboIndex)
         {
             AddUntilStep("wait for objects to become alive", () =>
                 TestPlayer.DrawableRuleset.Playfield.AllHitObjects.Count() == TestPlayer.DrawableRuleset.Objects.Count());
@@ -126,7 +126,7 @@ private void assertCorrectObjectComboColours(string description, Color4[] expect
                 });
             });
 
-            static bool checkComboColour(DrawableHitObject drawableHitObject, Color4 expectedColour)
+            static bool checkComboColour(DrawableHitObject drawableHitObject, Colour4 expectedColour)
             {
                 return drawableHitObject.AccentColour.Value == expectedColour &&
                        drawableHitObject.NestedHitObjects.All(n => checkComboColour(n, expectedColour));
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyHitPolicy.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyHitPolicy.cs
index 0e371429406e..7777819670dd 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyHitPolicy.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyHitPolicy.cs
@@ -7,6 +7,7 @@
 using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Text;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions;
 using osu.Framework.Extensions.TypeExtensions;
@@ -32,7 +33,6 @@
 using osu.Game.Scoring.Legacy;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyReplayPlayback.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyReplayPlayback.cs
index 404ca0c79e4e..bb61a19a2187 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyReplayPlayback.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneLegacyReplayPlayback.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneMissHitWindowJudgements.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneMissHitWindowJudgements.cs
index 7a89140fc4c6..25cbd1f0e449 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneMissHitWindowJudgements.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneMissHitWindowJudgements.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Replays;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Scoring;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneNoSpinnerStacking.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneNoSpinnerStacking.cs
index 30d9aff83a39..88a3d4f350e8 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneNoSpinnerStacking.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneNoSpinnerStacking.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneOsuAnalysisContainer.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneOsuAnalysisContainer.cs
index 06ab6e496f8e..95eef01bf725 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneOsuAnalysisContainer.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneOsuAnalysisContainer.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneOsuTouchInput.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneOsuTouchInput.cs
index bf0ab8efa0e0..5cf9044e2210 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneOsuTouchInput.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneOsuTouchInput.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Diagnostics;
@@ -23,8 +23,7 @@
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -731,9 +730,9 @@ protected override void OnTouchUp(TouchUpEvent e)
                 drawableTouches[(int)e.Touch.Source] = null;
             }
 
-            private Color4 colourFor(TouchSource source)
+            private Colour4 colourFor(TouchSource source)
             {
-                return Color4.FromHsv(new Vector4((float)source / TouchState.MAX_TOUCH_COUNT, 1f, 1f, 1f));
+                return Colour4.FromHSV((float)source / TouchState.MAX_TOUCH_COUNT, 1f, 1f);
             }
 
             private partial class FadingCircle : Circle
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneReplayRecording.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneReplayRecording.cs
index 8608ea1dfc4b..cb636c47b4a4 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneReplayRecording.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneReplayRecording.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneResume.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneResume.cs
index 023016c32df5..139d9a8b2b71 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneResume.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneResume.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneResumeOverlay.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneResumeOverlay.cs
index b35984a2fc37..c872397d0c08 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneResumeOverlay.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneResumeOverlay.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Gameplay;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSlider.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSlider.cs
index 5bef5e090b38..f2bbde134639 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSlider.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSlider.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -26,8 +27,6 @@
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -417,7 +416,7 @@ private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Text = result.IsHit ? "Hit!" : "Miss!",
-                Colour = result.IsHit ? Color4.Green : Color4.Red,
+                Colour = result.IsHit ? Colour4.Green : Colour4.Red,
                 Font = OsuFont.GetFont(size: 30),
                 Position = osuObject.HitObject.StackedEndPosition + judgementOffsetDirection * new Vector2(0, 45)
             });
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderApplication.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderApplication.cs
index 380a2087ac2d..2d945ee9cfe2 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderApplication.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderApplication.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -17,8 +18,6 @@
 using osu.Game.Rulesets.Osu.Skinning.Legacy;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -90,11 +89,11 @@ public void TestBallTintChangedOnAccentChange()
                 };
             });
 
-            AddStep("set accent white", () => dho.AccentColour.Value = Color4.White);
-            AddAssert("ball is white", () => dho.ChildrenOfType<LegacySliderBall>().Single().BallColour == Color4.White);
+            AddStep("set accent white", () => dho.AccentColour.Value = Colour4.White);
+            AddAssert("ball is white", () => dho.ChildrenOfType<LegacySliderBall>().Single().BallColour == Colour4.White);
 
-            AddStep("set accent red", () => dho.AccentColour.Value = Color4.Red);
-            AddAssert("ball is red", () => dho.ChildrenOfType<LegacySliderBall>().Single().BallColour == Color4.Red);
+            AddStep("set accent red", () => dho.AccentColour.Value = Colour4.Red);
+            AddAssert("ball is red", () => dho.ChildrenOfType<LegacySliderBall>().Single().BallColour == Colour4.Red);
         }
 
         [Test]
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderEarlyHitJudgement.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderEarlyHitJudgement.cs
index 19883060a06b..29320e61cb38 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderEarlyHitJudgement.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderEarlyHitJudgement.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Game.Audio;
@@ -19,7 +20,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderFollowCircleInput.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderFollowCircleInput.cs
index fc9bb16cb70e..b3e064ae11d2 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderFollowCircleInput.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderFollowCircleInput.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
@@ -19,7 +20,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderInput.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderInput.cs
index 0842f8f14ff4..786ec7b231e0 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderInput.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderInput.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Game.Beatmaps;
@@ -18,7 +19,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderLateHitJudgement.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderLateHitJudgement.cs
index 3276516d0a49..2b35d620df2b 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderLateHitJudgement.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderLateHitJudgement.cs
@@ -22,7 +22,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderSnaking.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderSnaking.cs
index 912b2b0626e3..96b2bd23c9e3 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSliderSnaking.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSliderSnaking.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Humanizer;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -23,7 +24,6 @@
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Storyboards;
 using osu.Game.Tests;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSmoke.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSmoke.cs
index 0e7d94cb9f3d..0347075ffbc6 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSmoke.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSmoke.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
@@ -12,7 +13,6 @@
 using osu.Framework.Testing.Input;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinner.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinner.cs
index 2e082c292b2f..d99c6891cd46 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinner.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinner.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerApplication.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerApplication.cs
index dae81f4cff13..785acc1c24b9 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerApplication.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerApplication.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Timing;
 using osu.Game.Beatmaps;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerInput.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerInput.cs
index 5e0b11cdee99..be0500bf70ec 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerInput.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerInput.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
@@ -23,7 +24,6 @@
 using osu.Game.Storyboards;
 using osu.Game.Tests;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
@@ -264,7 +264,7 @@ void assertTotalRotation(double time, float expected)
             {
                 addSeekStep(time);
                 AddAssert($"total rotation @ {time} is {expected}", () => drawableSpinner.Result.TotalRotation,
-                    () => Is.EqualTo(expected).Within(MathHelper.RadiansToDegrees(SpinFramesGenerator.SPIN_ERROR * 2)));
+                    () => Is.EqualTo(expected).Within(float.RadiansToDegrees(SpinFramesGenerator.SPIN_ERROR * 2)));
             }
 
             void addSeekStep(double time)
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerRotation.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerRotation.cs
index 367a00ad3bb9..38197456f6cd 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerRotation.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerRotation.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -23,7 +24,6 @@
 using osu.Game.Storyboards;
 using osu.Game.Tests;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneStartTimeOrderedHitPolicy.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneStartTimeOrderedHitPolicy.cs
index c637ed45f762..584204931fb9 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneStartTimeOrderedHitPolicy.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneStartTimeOrderedHitPolicy.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.TypeExtensions;
 using osu.Framework.Screens;
@@ -23,7 +24,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu.Tests/TestSceneTrianglesSpinnerRotation.cs b/osu.Game.Rulesets.Osu.Tests/TestSceneTrianglesSpinnerRotation.cs
index 1fef408088bb..3fb5e80efa51 100644
--- a/osu.Game.Rulesets.Osu.Tests/TestSceneTrianglesSpinnerRotation.cs
+++ b/osu.Game.Rulesets.Osu.Tests/TestSceneTrianglesSpinnerRotation.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -24,7 +25,6 @@
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
diff --git a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
index 45c4e763691b..025d1114ce1d 100644
--- a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Legacy;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Beatmaps
 {
diff --git a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs
index 0566b7f3341d..bf3f112098a4 100644
--- a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs
+++ b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs
@@ -4,12 +4,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Beatmaps
 {
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs
index dcf8ac0fedbd..eaa24df1aad2 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs
@@ -116,7 +116,7 @@ public static double EvaluateDifficultyOf(DifficultyHitObject current, bool with
                     var lastBaseObject = (OsuHitObject)osuLastObj.BaseObject;
                     var last2BaseObject = (OsuHitObject)osuLast2Obj.BaseObject;
 
-                    float distance = (last2BaseObject.StackedPosition - lastBaseObject.StackedPosition).Length;
+                    float distance = (last2BaseObject.StackedPosition - lastBaseObject.StackedPosition).Length();
 
                     if (distance < 1)
                     {
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs
index 55192df7af93..c745b2984739 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs
@@ -56,7 +56,7 @@ public static double EvaluateDifficultyOf(DifficultyHitObject current, bool hidd
 
                 if (!(currentObj.BaseObject is Spinner))
                 {
-                    double jumpDistance = (osuHitObject.StackedPosition - currentHitObject.StackedEndPosition).Length;
+                    double jumpDistance = (osuHitObject.StackedPosition - currentHitObject.StackedEndPosition).Length();
 
                     // We want to nerf objects that can be easily seen within the Flashlight circle radius.
                     if (i == 0)
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs b/osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs
index 5e9fc10ef877..67d12b3d1225 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs
@@ -4,12 +4,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Rulesets.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Difficulty.Preprocessing
 {
@@ -202,7 +202,7 @@ private void setDistances(double clockRate)
 
             Vector2 lastCursorPosition = lastDifficultyObject != null ? getEndCursorPosition(lastDifficultyObject) : LastObject.StackedPosition;
 
-            LazyJumpDistance = (BaseObject.StackedPosition * scalingFactor - lastCursorPosition * scalingFactor).Length;
+            LazyJumpDistance = (BaseObject.StackedPosition * scalingFactor - lastCursorPosition * scalingFactor).Length();
             MinimumJumpTime = AdjustedDeltaTime;
             MinimumJumpDistance = LazyJumpDistance;
 
@@ -233,7 +233,7 @@ private void setDistances(double clockRate)
                 // Thus, the player is assumed to jump the minimum of these two distances in all cases.
                 //
 
-                float tailJumpDistance = Vector2.Subtract(lastSlider.TailCircle.StackedPosition, BaseObject.StackedPosition).Length * scalingFactor;
+                float tailJumpDistance = Vector2.Subtract(lastSlider.TailCircle.StackedPosition, BaseObject.StackedPosition).Length() * scalingFactor;
                 MinimumJumpDistance = Math.Max(0, Math.Min(LazyJumpDistance - (maximum_slider_radius - assumed_slider_radius), tailJumpDistance - maximum_slider_radius));
             }
 
@@ -322,7 +322,7 @@ private void computeSliderCursorPosition()
                 var currMovementObj = (OsuHitObject)nestedObjects[i];
 
                 Vector2 currMovement = Vector2.Subtract(currMovementObj.StackedPosition, currCursorPosition);
-                double currMovementLength = scalingFactor * currMovement.Length;
+                double currMovementLength = scalingFactor * currMovement.Length();
 
                 // Amount of movement required so that the cursor position needs to be updated.
                 double requiredMovement = assumed_slider_radius;
@@ -335,10 +335,10 @@ private void computeSliderCursorPosition()
                     // This code is designed to prevent buffing situations where lazy end is actually a less efficient movement.
                     Vector2 lazyMovement = Vector2.Subtract((Vector2)LazyEndPosition, currCursorPosition);
 
-                    if (lazyMovement.Length < currMovement.Length)
+                    if (lazyMovement.Length() < currMovement.Length())
                         currMovement = lazyMovement;
 
-                    currMovementLength = scalingFactor * currMovement.Length;
+                    currMovementLength = scalingFactor * currMovement.Length();
                 }
                 else if (currMovementObj is SliderRepeat)
                 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/GridPlacementBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/GridPlacementBlueprint.cs
index 07856f11e0af..4935e0d96590 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/GridPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/GridPlacementBlueprint.cs
@@ -5,8 +5,8 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCircleOverlapMarker.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCircleOverlapMarker.cs
index 7a5b01ce796f..918a216f44f3 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCircleOverlapMarker.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCircleOverlapMarker.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Screens.Edit;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCirclePiece.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCirclePiece.cs
index c585f09b0041..fdb95da47b02 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCirclePiece.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/Components/HitCirclePiece.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Skinning.Default;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs
index 61ed30259aa8..47ba27e35e5a 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -9,8 +9,8 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCircleSelectionBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCircleSelectionBlueprint.cs
index fd2bbe991682..f593c249d727 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCircleSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCircleSelectionBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointConnection.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointConnection.cs
index 5706ed4baf61..5e8c39526bf7 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointConnection.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointConnection.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Lines;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs
index 3337e9921579..f1e59a606e81 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs
@@ -6,7 +6,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
@@ -17,9 +16,8 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 {
@@ -188,7 +186,7 @@ private void updateMarkerDisplay()
 
             markerRing.Alpha = IsSelected.Value ? 1 : 0;
 
-            Color4 colour = getColourFromNodeType();
+            Colour4 colour = getColourFromNodeType();
 
             if (IsHovered || IsSelected.Value)
                 colour = colour.Lighten(1);
@@ -197,7 +195,7 @@ private void updateMarkerDisplay()
             Scale = new Vector2(hitObject.Scale);
         }
 
-        private Color4 getColourFromNodeType()
+        private Colour4 getColourFromNodeType()
         {
             if (ControlPoint.Type is not PathType pathType)
                 return colours.Yellow;
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs
index bff67018260f..72f1a6c8651a 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs
@@ -28,8 +28,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/SliderBodyPiece.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/SliderBodyPiece.cs
index 57cf6b16ccf5..b360bc5ea57a 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/SliderBodyPiece.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/SliderBodyPiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -6,8 +6,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Skinning.Default;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 {
@@ -35,7 +34,7 @@ public SliderBodyPiece()
 
             InternalChild = body = new ManualSliderBody
             {
-                AccentColour = Color4.Transparent
+                AccentColour = Colour4.Transparent
             };
         }
 
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderEndDragMarker.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderEndDragMarker.cs
index 9cc539419161..1e7e3b86ac09 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderEndDragMarker.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderEndDragMarker.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Lines;
@@ -9,8 +10,7 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs
index b5b4c8c87d5c..fd815ccc83da 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs
@@ -18,8 +18,7 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 {
@@ -507,7 +506,7 @@ private void updateSliderPathFromBSplineBuilder()
             foreach (var point in points)
             {
                 var vec = point - circleArc.Centre;
-                loss += Math.Pow((vec.Length - circleArc.Radius) / length, 2);
+                loss += Math.Pow((vec.Length() - circleArc.Radius) / length, 2);
 
                 if (lastVec.HasValue)
                 {
@@ -554,7 +553,7 @@ private void updateSliderPathFromBSplineBuilder()
 
             loss /= points.Count;
 
-            return loss > freehandToolboxGroup?.CircleThreshold.Value || totalWinding > MathHelper.TwoPi ? null : circleArcControlPoints;
+            return loss > freehandToolboxGroup?.CircleThreshold.Value || totalWinding > float.Tau ? null : circleArcControlPoints;
         }
 
         private enum SliderPlacementState
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs
index b46dd44ce548..4cb0e866e4aa 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -25,8 +25,8 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/Components/SpinnerPiece.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/Components/SpinnerPiece.cs
index 17e838b4e727..d336ac377a58 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/Components/SpinnerPiece.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/Components/SpinnerPiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners.Components
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerPlacementBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerPlacementBlueprint.cs
index 17d2dcd75cbb..c95b08cf7d76 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerPlacementBlueprint.cs
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerSelectionBlueprint.cs b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerSelectionBlueprint.cs
index b273292f8a62..27e6650c5e7b 100644
--- a/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerSelectionBlueprint.cs
@@ -1,9 +1,9 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners.Components;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Checks/CheckLowDiffOverlaps.cs b/osu.Game.Rulesets.Osu/Edit/Checks/CheckLowDiffOverlaps.cs
index 565499fc58d8..e78345bd1455 100644
--- a/osu.Game.Rulesets.Osu/Edit/Checks/CheckLowDiffOverlaps.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Checks/CheckLowDiffOverlaps.cs
@@ -52,7 +52,7 @@ public IEnumerable<Issue> Run(BeatmapVerifierContext context)
                     // The objects are not visible at the same time (without mods), hence skipping.
                     continue;
 
-                float distanceSq = (hitObject.StackedEndPosition - nextHitObject.StackedPosition).LengthSquared;
+                float distanceSq = (hitObject.StackedEndPosition - nextHitObject.StackedPosition).LengthSquared();
                 double diameter = (hitObject.Radius - overlap_leniency) * 2;
                 double diameterSq = diameter * diameter;
 
diff --git a/osu.Game.Rulesets.Osu/Edit/Checks/CheckOffscreenObjects.cs b/osu.Game.Rulesets.Osu/Edit/Checks/CheckOffscreenObjects.cs
index 6910c721ac2d..bfeb78e9381c 100644
--- a/osu.Game.Rulesets.Osu/Edit/Checks/CheckOffscreenObjects.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Checks/CheckOffscreenObjects.cs
@@ -2,10 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Checks.Components;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit.Checks
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/Checks/CheckTimeDistanceEquality.cs b/osu.Game.Rulesets.Osu/Edit/Checks/CheckTimeDistanceEquality.cs
index ac3faa1a0961..90d5ef1237b2 100644
--- a/osu.Game.Rulesets.Osu/Edit/Checks/CheckTimeDistanceEquality.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Checks/CheckTimeDistanceEquality.cs
@@ -95,7 +95,7 @@ public IEnumerable<Issue> Run(BeatmapVerifierContext context)
                     continue;
 
                 // Relying on FastInvSqrt is probably good enough here. We'll be taking the difference between distances later, hence square not being sufficient.
-                float distance = (hitObject.StackedEndPosition - nextHitObject.StackedPosition).LengthFast;
+                float distance = (hitObject.StackedEndPosition - nextHitObject.StackedPosition).Length();
 
                 // Ignore stacks and half-stacks, as these are close enough to where they can't be confused for being time-distanced.
                 if (distance < stack_leniency)
@@ -111,7 +111,7 @@ public IEnumerable<Issue> Run(BeatmapVerifierContext context)
                     continue;
                 }
 
-                if ((Math.Abs(expectedDistance - distance) - distance_leniency_absolute_problem) / distance > distance_leniency_percent_problem)
+                if ((Math.Abs(expectedDistance - distance) - distance_leniency_absolute_problem) / distance >= distance_leniency_percent_problem)
                     yield return new IssueTemplateIrregularSpacingProblem(this).Create(expectedDistance, distance, hitObject, nextHitObject);
                 else if ((Math.Abs(expectedDistance - distance) - distance_leniency_absolute_warning) / distance > distance_leniency_percent_warning)
                     yield return new IssueTemplateIrregularSpacingWarning(this).Create(expectedDistance, distance, hitObject, nextHitObject);
diff --git a/osu.Game.Rulesets.Osu/Edit/DrawableOsuEditorRuleset.cs b/osu.Game.Rulesets.Osu/Edit/DrawableOsuEditorRuleset.cs
index 4dd718597aaf..e7518c3ede50 100644
--- a/osu.Game.Rulesets.Osu/Edit/DrawableOsuEditorRuleset.cs
+++ b/osu.Game.Rulesets.Osu/Edit/DrawableOsuEditorRuleset.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Game.Beatmaps;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/FreehandSliderToolboxGroup.cs b/osu.Game.Rulesets.Osu/Edit/FreehandSliderToolboxGroup.cs
index 6f8c58e1e45e..a88ae73b178b 100644
--- a/osu.Game.Rulesets.Osu/Edit/FreehandSliderToolboxGroup.cs
+++ b/osu.Game.Rulesets.Osu/Edit/FreehandSliderToolboxGroup.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Edit;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/GenerateToolboxGroup.cs b/osu.Game.Rulesets.Osu/Edit/GenerateToolboxGroup.cs
index 4e188a2b8691..469c5865aa4e 100644
--- a/osu.Game.Rulesets.Osu/Edit/GenerateToolboxGroup.cs
+++ b/osu.Game.Rulesets.Osu/Edit/GenerateToolboxGroup.cs
@@ -7,8 +7,8 @@
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuBlueprintContainer.cs b/osu.Game.Rulesets.Osu/Edit/OsuBlueprintContainer.cs
index 9d82046c23e0..351b54ec33c1 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuBlueprintContainer.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuBlueprintContainer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuDistanceSnapProvider.cs b/osu.Game.Rulesets.Osu/Edit/OsuDistanceSnapProvider.cs
index 6be60e45543f..f046f815be72 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuDistanceSnapProvider.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuDistanceSnapProvider.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Edit;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuGridToolboxGroup.cs b/osu.Game.Rulesets.Osu/Edit/OsuGridToolboxGroup.cs
index 5cc25630aaca..fb8e63db6413 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuGridToolboxGroup.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuGridToolboxGroup.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -18,8 +19,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.RadioButtons;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
@@ -107,7 +106,7 @@ public void SetGridFromPoints(Vector2 point1, Vector2 point2)
             if (!GridLinesRotation.Disabled)
             {
                 float period = GridLinesRotation.MaxValue - GridLinesRotation.MinValue;
-                GridLinesRotation.Value = normalizeRotation(MathHelper.RadiansToDegrees(MathF.Atan2(point2.Y - point1.Y, point2.X - point1.X)), period);
+                GridLinesRotation.Value = normalizeRotation(float.RadiansToDegrees(MathF.Atan2(point2.Y - point1.Y, point2.X - point1.X)), period);
             }
 
             // Divide the distance so that there is a good density of grid lines.
@@ -125,13 +124,23 @@ private void load()
             {
                 startPositionXSlider = new ExpandableSlider<float>
                 {
-                    Current = StartPositionX,
+                    Current = new BindableFloat
+                    {
+                        MinValue = -OsuPlayfield.BASE_SIZE.X / 2,
+                        MaxValue = OsuPlayfield.BASE_SIZE.X / 2,
+                        Precision = 0.1f,
+                    },
                     KeyboardStep = 1,
                     ExpandedLabelText = "X offset",
                 },
                 startPositionYSlider = new ExpandableSlider<float>
                 {
-                    Current = StartPositionY,
+                    Current = new BindableFloat
+                    {
+                        MinValue = -OsuPlayfield.BASE_SIZE.Y / 2,
+                        MaxValue = OsuPlayfield.BASE_SIZE.Y / 2,
+                        Precision = 0.1f,
+                    },
                     KeyboardStep = 1,
                     ExpandedLabelText = "Y offset",
                 },
@@ -186,15 +195,27 @@ protected override void LoadComplete()
             StartPositionX.BindValueChanged(x =>
             {
                 startPositionXSlider.ContractedLabelText = $"X: {x.NewValue:#,0.##}";
+                startPositionXSlider.Current.Value = x.NewValue - OsuPlayfield.BASE_SIZE.X / 2;
                 StartPosition.Value = new Vector2(x.NewValue, StartPosition.Value.Y);
             }, true);
 
             StartPositionY.BindValueChanged(y =>
             {
                 startPositionYSlider.ContractedLabelText = $"Y: {y.NewValue:#,0.##}";
+                startPositionYSlider.Current.Value = y.NewValue - OsuPlayfield.BASE_SIZE.Y / 2;
                 StartPosition.Value = new Vector2(StartPosition.Value.X, y.NewValue);
             }, true);
 
+            startPositionXSlider.Current.BindValueChanged(x =>
+            {
+                StartPositionX.Value = x.NewValue + OsuPlayfield.BASE_SIZE.X / 2;
+            });
+
+            startPositionYSlider.Current.BindValueChanged(y =>
+            {
+                StartPositionY.Value = y.NewValue + OsuPlayfield.BASE_SIZE.Y / 2;
+            });
+
             StartPosition.BindValueChanged(pos =>
             {
                 StartPositionX.Value = pos.NewValue.X;
@@ -289,7 +310,7 @@ public OutlineTriangle(bool outlineOnly, float size)
                         Origin = Anchor.Centre,
                         RelativePositionAxes = Axes.Y,
                         Y = 0.48f,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         Size = new Vector2(size - 7),
                         Blending = BlendingParameters.None,
                     });
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
index 98645fa54725..6939cb63676a 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
@@ -8,6 +8,7 @@
 using System.Globalization;
 using System.Linq;
 using System.Text.RegularExpressions;
+using System.Numerics;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -30,8 +31,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs
index c591b79b29e9..8fa11a80e59f 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
@@ -19,8 +20,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
@@ -201,7 +201,7 @@ public override bool HandleFlip(Direction direction, bool flipOverOrigin)
                 {
                     case PositionSnapGridType.Square:
                         flipAxis = GeometryUtils.RotateVector(Vector2.UnitX, -((gridToolbox.GridLinesRotation.Value + 360 + 45) % 90 - 45));
-                        flipAxis = direction == Direction.Vertical ? flipAxis.PerpendicularLeft : flipAxis;
+                        flipAxis = direction == Direction.Vertical ? flipAxis.PerpendicularLeft() : flipAxis;
                         break;
 
                     case PositionSnapGridType.Triangle:
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuSelectionRotationHandler.cs b/osu.Game.Rulesets.Osu/Edit/OsuSelectionRotationHandler.cs
index 44d1543ae461..669310cfaad2 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuSelectionRotationHandler.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuSelectionRotationHandler.cs
@@ -13,7 +13,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuSelectionScaleHandler.cs b/osu.Game.Rulesets.Osu/Edit/OsuSelectionScaleHandler.cs
index 17f32ea67d5d..af70ddabde61 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuSelectionScaleHandler.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuSelectionScaleHandler.cs
@@ -19,7 +19,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
@@ -168,7 +168,7 @@ private void scaleSlider(Slider slider, Vector2 scale, Vector2 origin, OriginalH
         {
             Debug.Assert(originalInfo.PathControlPointPositions != null && originalInfo.PathControlPointTypes != null);
 
-            scale = Vector2.ComponentMax(scale, new Vector2(Precision.FLOAT_EPSILON));
+            scale = Vector2.Max(scale, new Vector2(Precision.FLOAT_EPSILON));
 
             // Maintain the path types in case they were defaulted to bezier at some point during scaling
             for (int i = 0; i < slider.Path.ControlPoints.Count; i++)
diff --git a/osu.Game.Rulesets.Osu/Edit/PolygonGenerationPopover.cs b/osu.Game.Rulesets.Osu/Edit/PolygonGenerationPopover.cs
index fe5e0581ecd2..10eadee33d40 100644
--- a/osu.Game.Rulesets.Osu/Edit/PolygonGenerationPopover.cs
+++ b/osu.Game.Rulesets.Osu/Edit/PolygonGenerationPopover.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -19,7 +20,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/PreciseMovementPopover.cs b/osu.Game.Rulesets.Osu/Edit/PreciseMovementPopover.cs
index a1200f507d64..1bbe91b143d2 100644
--- a/osu.Game.Rulesets.Osu/Edit/PreciseMovementPopover.cs
+++ b/osu.Game.Rulesets.Osu/Edit/PreciseMovementPopover.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
@@ -22,7 +23,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Utils;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/PreciseRotationPopover.cs b/osu.Game.Rulesets.Osu/Edit/PreciseRotationPopover.cs
index 959963ed338c..f9ab7f56cb8f 100644
--- a/osu.Game.Rulesets.Osu/Edit/PreciseRotationPopover.cs
+++ b/osu.Game.Rulesets.Osu/Edit/PreciseRotationPopover.cs
@@ -16,7 +16,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Components.RadioButtons;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/PreciseScalePopover.cs b/osu.Game.Rulesets.Osu/Edit/PreciseScalePopover.cs
index 88bf92ecb532..ee73bbdd9fc9 100644
--- a/osu.Game.Rulesets.Osu/Edit/PreciseScalePopover.cs
+++ b/osu.Game.Rulesets.Osu/Edit/PreciseScalePopover.cs
@@ -20,7 +20,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.RadioButtons;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/Edit/TransformToolboxGroup.cs b/osu.Game.Rulesets.Osu/Edit/TransformToolboxGroup.cs
index 440e06598d0a..22ad0263c6fd 100644
--- a/osu.Game.Rulesets.Osu/Edit/TransformToolboxGroup.cs
+++ b/osu.Game.Rulesets.Osu/Edit/TransformToolboxGroup.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -16,7 +17,6 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
diff --git a/osu.Game.Rulesets.Osu/HUD/AimErrorMeter.cs b/osu.Game.Rulesets.Osu/HUD/AimErrorMeter.cs
index 46593a56bbfe..6124bc38e892 100644
--- a/osu.Game.Rulesets.Osu/HUD/AimErrorMeter.cs
+++ b/osu.Game.Rulesets.Osu/HUD/AimErrorMeter.cs
@@ -3,6 +3,7 @@
 
 using System.ComponentModel;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -23,8 +24,6 @@
 using osu.Game.Rulesets.Osu.Statistics;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
-using osuTK;
-using osuTK.Graphics;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Rulesets.Osu.HUD
@@ -348,7 +347,7 @@ protected override void OnNewJudgement(JudgementResult judgement)
             lastObjectPosition = ((OsuHitObject)circleJudgement.HitObject).StackedPosition;
         }
 
-        private Color4 getColourForPosition(Vector2 position)
+        private Colour4 getColourForPosition(Vector2 position)
         {
             float distance = Vector2.Distance(position, Vector2.Zero);
 
diff --git a/osu.Game.Rulesets.Osu/Judgements/OsuHitCircleJudgementResult.cs b/osu.Game.Rulesets.Osu/Judgements/OsuHitCircleJudgementResult.cs
index 7a9a868b9b3d..8d18a00d58ba 100644
--- a/osu.Game.Rulesets.Osu/Judgements/OsuHitCircleJudgementResult.cs
+++ b/osu.Game.Rulesets.Osu/Judgements/OsuHitCircleJudgementResult.cs
@@ -4,7 +4,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Judgements
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModBlinds.cs b/osu.Game.Rulesets.Osu/Mods/OsuModBlinds.cs
index c65f804e4b38..fcf6d01dfe2c 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModBlinds.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModBlinds.cs
@@ -17,7 +17,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
@@ -109,23 +108,23 @@ private void load()
                     {
                         Anchor = Anchor.TopLeft,
                         Origin = Anchor.TopLeft,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Y,
                     },
                     blackBoxRight = new Box
                     {
                         Anchor = Anchor.TopRight,
                         Origin = Anchor.TopRight,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Y,
                     },
                     bgPanelLeft = new ModBlindsPanel
                     {
                         Origin = Anchor.TopRight,
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                     },
                     panelLeft = new ModBlindsPanel { Origin = Anchor.TopRight, },
-                    bgPanelRight = new ModBlindsPanel { Colour = Color4.Gray },
+                    bgPanelRight = new ModBlindsPanel { Colour = Colour4.Gray },
                     panelRight = new ModBlindsPanel()
                 };
             }
@@ -147,7 +146,7 @@ protected override void Update()
                 else
                 {
                     float center = restrictTo.ToSpaceOfOtherDrawable(restrictTo.OriginPosition, Parent!).X;
-                    float halfDiagonal = (restrictTo.DrawSize / 2).LengthFast;
+                    float halfDiagonal = (restrictTo.DrawSize / 2).Length();
 
                     start = center - halfDiagonal;
                     end = center + halfDiagonal;
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModBubbles.cs b/osu.Game.Rulesets.Osu/Mods/OsuModBubbles.cs
index 68b9bb0aaa53..e528ca613c43 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModBubbles.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModBubbles.cs
@@ -3,8 +3,8 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -21,8 +21,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
@@ -158,7 +156,7 @@ private partial class BubbleDrawable : PoolableDrawable
 
             public bool WasHit { get; set; }
 
-            public Color4 AccentColour { get; set; }
+            public Colour4 AccentColour { get; set; }
 
             private readonly Box colourBox;
             private readonly CircularContainer content;
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModDepth.cs b/osu.Game.Rulesets.Osu/Mods/OsuModDepth.cs
index ea0be78c0921..774db2f5c5db 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModDepth.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModDepth.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
@@ -158,7 +158,8 @@ private void processSlider(double time, DrawableSlider drawableSlider)
 
         private static Vector2 toPlayfieldPosition(float scale, Vector2 positionAtZeroDepth)
         {
-            return (positionAtZeroDepth - camera_position.Xy) * scale + camera_position.Xy;
+            var camXy = new Vector2(camera_position.X, camera_position.Y);
+            return (positionAtZeroDepth - camXy) * scale + camXy;
         }
     }
 }
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModFlashlight.cs b/osu.Game.Rulesets.Osu/Mods/OsuModFlashlight.cs
index a8c2508f809b..7938bfd9765e 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModFlashlight.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModFlashlight.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Input;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModMagnetised.cs b/osu.Game.Rulesets.Osu/Mods/OsuModMagnetised.cs
index 11b512c88239..b767ba4da814 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModMagnetised.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModMagnetised.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics.Sprites;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModRandom.cs b/osu.Game.Rulesets.Osu/Mods/OsuModRandom.cs
index 3224ff9eafd7..690e8c73865c 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModRandom.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModRandom.cs
@@ -35,7 +35,7 @@ public class OsuModRandom : ModRandom, IApplicableToBeatmap
             Precision = 0.1f
         };
 
-        private static readonly float playfield_diagonal = OsuPlayfield.BASE_SIZE.LengthFast;
+        private static readonly float playfield_diagonal = OsuPlayfield.BASE_SIZE.Length();
 
         private Random random = null!;
 
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModRepel.cs b/osu.Game.Rulesets.Osu/Mods/OsuModRepel.cs
index b95cc9b65173..5413b558f826 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModRepel.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModRepel.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics.Sprites;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Osu.Utils;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs b/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
index 429332bc5500..10dfcfb707f8 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModSynesthesia.cs b/osu.Game.Rulesets.Osu/Mods/OsuModSynesthesia.cs
index e1123807cd94..bc4cc61ce237 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModSynesthesia.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModSynesthesia.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Screens.Edit;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
@@ -32,7 +32,7 @@ public void ApplyToDrawableHitObject(DrawableHitObject d)
         {
             if (currentBeatmap == null) return;
 
-            Color4? timingBasedColour = null;
+            Colour4? timingBasedColour = null;
 
             d.HitObjectApplied += _ =>
             {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTargetPractice.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTargetPractice.cs
index 22dcd5079a08..0a54f90ad4d1 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModTargetPractice.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTargetPractice.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
@@ -26,8 +27,6 @@
 using osu.Game.Rulesets.Osu.Utils;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
@@ -151,7 +150,7 @@ protected override void ApplyNormalVisibilityState(DrawableHitObject drawable, A
             }
 
             using (circle.BeginAbsoluteSequence(startTime - controlPointInfo.TimingPointAt(startTime).BeatLength - undim_duration))
-                circle.FadeColour(Color4.White, undim_duration);
+                circle.FadeColour(Colour4.White, undim_duration);
         }
 
         #endregion
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs
index 702c52748049..87257cafd278 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTransform.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTransform.cs
index d0a1350db9e3..9c6e8a735644 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModTransform.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTransform.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModWiggle.cs b/osu.Game.Rulesets.Osu/Mods/OsuModWiggle.cs
index 7c0faab23517..d4ce6ae842a3 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModWiggle.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModWiggle.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs
index 9eb54c3d36e5..1e842e3a2f28 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs
@@ -2,15 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Pooling;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
 {
@@ -34,7 +32,7 @@ public FollowPoint()
                 EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Glow,
-                    Colour = Color4.White.Opacity(0.2f),
+                    Colour = Colour4.White.Opacity(0.2f),
                     Radius = 4,
                 },
                 Child = new Box
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointConnection.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointConnection.cs
index 20c36b7804d3..b9e68211e539 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointConnection.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointConnection.cs
@@ -3,11 +3,11 @@
 
 using System;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Pooling;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Pooling;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
 {
@@ -61,7 +61,7 @@ private void scheduleRefresh() => Scheduler.AddOnce(() =>
             Vector2 endPosition = end.StackedPosition;
 
             Vector2 distanceVector = endPosition - startPosition;
-            int distance = (int)distanceVector.Length;
+            int distance = (int)distanceVector.Length();
             float rotation = (float)(Math.Atan2(distanceVector.Y, distanceVector.X) * (180 / Math.PI));
 
             double finalTransformEndTime = startTime;
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointLifetimeEntry.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointLifetimeEntry.cs
index c26a2393b77c..754c8e52e2bd 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointLifetimeEntry.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPointLifetimeEntry.cs
@@ -3,10 +3,10 @@
 
 using System;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics.Performance;
 using osu.Game.Rulesets.Objects;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
 {
@@ -88,7 +88,7 @@ private void refreshLifetimes()
             Vector2 distanceVector = endPosition - startPosition;
 
             // The lifetime start will match the fade-in time of the first follow point.
-            float fraction = (int)(FollowPointConnection.SPACING * 1.5) / distanceVector.Length;
+            float fraction = (int)(FollowPointConnection.SPACING * 1.5) / distanceVector.Length();
             FollowPointConnection.GetFadeTimes(Start, End, fraction, out double fadeInTime, out _);
 
             LifetimeStart = fadeInTime;
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
index 4eeb876eb4ea..1fbdf58623e8 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -19,8 +20,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -337,7 +336,7 @@ internal void SuppressHitAnimations()
             if (Time.Current >= HitStateUpdateTime)
             {
                 // More or less matches stable (see https://github.com/peppy/osu-stable-reference/blob/bb57924c1552adbed11ee3d96cdcde47cf96f2b6/osu!/GameplayElements/HitObjects/Osu/HitCircleOsu.cs#L336-L338)
-                AccentColour.Value = Color4.White;
+                AccentColour.Value = Colour4.White;
                 Alpha = Interpolation.ValueAt(Time.Current, 1f, 0f, HitStateUpdateTime, HitStateUpdateTime + 700);
             }
 
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs
index ecae15aba77b..0c89435f2fe7 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -16,8 +17,6 @@
 using osu.Game.Rulesets.Osu.Scoring;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -116,9 +115,9 @@ protected override void ClearNestedHitObjects()
 
         private void applyDim(Drawable piece)
         {
-            piece.FadeColour(new Color4(195, 195, 195, 255));
+            piece.FadeColour(new Colour4(195, 195, 195, 255));
             using (piece.BeginDelayedSequence(InitialLifetimeOffset - OsuHitWindows.MISS_WINDOW))
-                piece.FadeColour(Color4.White, 100);
+                piece.FadeColour(Colour4.White, 100);
         }
 
         private void applyDimToDrawableHitObject(DrawableHitObject dho, ArmedState _) => applyDim(dho);
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuJudgement.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuJudgement.cs
index 0f7812d91ad3..984c585cf16d 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuJudgement.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuJudgement.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -7,14 +7,13 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
     public partial class DrawableOsuJudgement : DrawableJudgement
     {
-        internal Color4 AccentColour { get; private set; }
+        internal Colour4 AccentColour { get; private set; }
 
         internal SkinnableLighting Lighting { get; private set; } = null!;
 
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
index 46f2dbf2248e..05b33684d4d1 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -21,7 +21,7 @@
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
index 9b8b19780487..25e5f2fd2c66 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs
@@ -72,7 +72,7 @@ public void UpdateProgress(double completionProgress)
 
             // Ensure the value is substantially high enough to allow for Atan2 to get a valid angle.
             // Needed for when near completion, or in case of a very short slider.
-            if (diff.LengthFast < 0.01f)
+            if (diff.Length() < 0.01f)
                 return;
 
             ball.Rotation = -90 + (float)(-Math.Atan2(diff.X, diff.Y) * 180 / Math.PI);
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderRepeat.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderRepeat.cs
index 0bd0b782595d..4520e43472ea 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderRepeat.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderRepeat.cs
@@ -3,22 +3,18 @@
 
 #nullable disable
 
-using System.Collections.Generic;
 using System;
-
+using System.Collections.Generic;
+using System.Numerics;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
-
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Skinning;
 
-using JetBrains.Annotations;
-using osuTK.Graphics;
-using osuTK;
-
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
     public partial class DrawableSliderRepeat : DrawableOsuHitObject
@@ -192,7 +188,7 @@ internal void SuppressHitAnimations()
             if (hit)
             {
                 // More or less matches stable (see https://github.com/peppy/osu-stable-reference/blob/bb57924c1552adbed11ee3d96cdcde47cf96f2b6/osu!/GameplayElements/HitObjects/Osu/HitCircleOsu.cs#L336-L338)
-                AccentColour.Value = Color4.White;
+                AccentColour.Value = Colour4.White;
                 Alpha = Interpolation.ValueAt(Time.Current, 1f, 0f, HitStateUpdateTime, HitStateUpdateTime + 700);
                 Arrow.Alpha = 0;
             }
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTail.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTail.cs
index e9f6f105bb6b..05ac9d4efc49 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTail.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTail.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Diagnostics;
+using System.Numerics;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,8 +13,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -134,7 +133,7 @@ internal void SuppressHitAnimations()
             if (Time.Current >= HitStateUpdateTime)
             {
                 // More or less matches stable (see https://github.com/peppy/osu-stable-reference/blob/bb57924c1552adbed11ee3d96cdcde47cf96f2b6/osu!/GameplayElements/HitObjects/Osu/HitCircleOsu.cs#L336-L338)
-                AccentColour.Value = Color4.White;
+                AccentColour.Value = Colour4.White;
                 Alpha = Interpolation.ValueAt(Time.Current, 1f, 0f, HitStateUpdateTime, HitStateUpdateTime + 700);
             }
 
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTick.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTick.cs
index cf01016012af..7a27a59ba992 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTick.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTick.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -46,7 +45,7 @@ private void load()
                 Origin = Anchor.Centre,
                 Size = new Vector2(DEFAULT_TICK_SIZE),
                 BorderThickness = DEFAULT_TICK_SIZE / 4,
-                BorderColour = Color4.White,
+                BorderColour = Colour4.White,
                 Child = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/SkinnableLighting.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/SkinnableLighting.cs
index 7bb54487c0bb..52291222bf58 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/SkinnableLighting.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/SkinnableLighting.cs
@@ -5,7 +5,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -41,9 +41,9 @@ public void SetColourFrom(DrawableOsuJudgement targetJudgement, JudgementResult?
         private void updateColour()
         {
             if (targetJudgement == null || targetResult == null)
-                Colour = Color4.White;
+                Colour = Colour4.White;
             else
-                Colour = targetResult.IsHit && !targetResult.Type.IsTick() ? targetJudgement.AccentColour : Color4.Transparent;
+                Colour = targetResult.IsHit && !targetResult.Type.IsTick() ? targetJudgement.AccentColour : Colour4.Transparent;
         }
     }
 }
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/SliderInputManager.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/SliderInputManager.cs
index 9851b9c08fc4..57808f5b0a98 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/SliderInputManager.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/SliderInputManager.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
@@ -111,7 +111,7 @@ public void PostProcessHeadJudgement(DrawableSliderHead head)
                 // When the first nested object that is further outside the follow area is reached,
                 // forcefully miss all other nested objects that would otherwise be valid to be hit.
                 // This covers a case of a slider overlapping itself that requires tracking to a tick on an outer edge.
-                if ((objectPosition - mousePositionInSlider).LengthSquared > radius * radius)
+                if ((objectPosition - mousePositionInSlider).LengthSquared() > radius * radius)
                 {
                     allTicksInRange = false;
                     break;
@@ -208,7 +208,7 @@ public bool IsMouseInFollowArea(bool expanded)
             Vector2 followCirclePosition = slider.HitObject.CurvePositionAt(followProgress);
             Vector2 mousePositionInSlider = slider.ToLocalSpace(pos) - slider.OriginPosition;
 
-            return (mousePositionInSlider - followCirclePosition).LengthSquared <= radius * radius;
+            return (mousePositionInSlider - followCirclePosition).LengthSquared() <= radius * radius;
         }
 
         /// <summary>
diff --git a/osu.Game.Rulesets.Osu/Objects/OsuHitObject.cs b/osu.Game.Rulesets.Osu/Objects/OsuHitObject.cs
index f40060af5c18..4e4ea86a3c2b 100644
--- a/osu.Game.Rulesets.Osu/Objects/OsuHitObject.cs
+++ b/osu.Game.Rulesets.Osu/Objects/OsuHitObject.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Scoring;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
diff --git a/osu.Game.Rulesets.Osu/Objects/Slider.cs b/osu.Game.Rulesets.Osu/Objects/Slider.cs
index 875c9d74bf42..c40ce95de861 100644
--- a/osu.Game.Rulesets.Osu/Objects/Slider.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Slider.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -19,7 +19,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
diff --git a/osu.Game.Rulesets.Osu/Objects/Spinner.cs b/osu.Game.Rulesets.Osu/Objects/Spinner.cs
index 23ac501981d8..3c92347c8186 100644
--- a/osu.Game.Rulesets.Osu/Objects/Spinner.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Spinner.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
diff --git a/osu.Game.Rulesets.Osu/OsuInputManager.cs b/osu.Game.Rulesets.Osu/OsuInputManager.cs
index 3c15287d5358..d5d6ec650f9e 100644
--- a/osu.Game.Rulesets.Osu/OsuInputManager.cs
+++ b/osu.Game.Rulesets.Osu/OsuInputManager.cs
@@ -3,6 +3,7 @@
 
 using System.ComponentModel;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Bindings;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu
 {
diff --git a/osu.Game.Rulesets.Osu/OsuRuleset.cs b/osu.Game.Rulesets.Osu/OsuRuleset.cs
index 0253ff77d350..4daf423b9d2b 100644
--- a/osu.Game.Rulesets.Osu/OsuRuleset.cs
+++ b/osu.Game.Rulesets.Osu/OsuRuleset.cs
@@ -1,9 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
@@ -45,7 +45,6 @@
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu
 {
diff --git a/osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs b/osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs
index 8233802e285d..c3113adc6481 100644
--- a/osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs
+++ b/osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Scoring;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Replays
 {
@@ -161,7 +161,7 @@ private void addHitObjectReplay(OsuHitObject h)
 
                 Vector2 spinCentreOffset = SPINNER_CENTRE - ((OsuReplayFrame)Frames[^1]).Position;
 
-                if (spinCentreOffset.Length > SPIN_RADIUS)
+                if (spinCentreOffset.Length() > SPIN_RADIUS)
                 {
                     // If moving in from the outside, don't ease out (default eases out). This means auto will "start" spinning immediately after moving into position.
                     easing = Easing.In;
@@ -185,7 +185,7 @@ private void addHitObjectReplay(OsuHitObject h)
         private static void calcSpinnerStartPosAndDirection(Vector2 prevPos, out Vector2 startPosition, out float spinnerDirection)
         {
             Vector2 spinCentreOffset = SPINNER_CENTRE - prevPos;
-            float distFromCentre = spinCentreOffset.Length;
+            float distFromCentre = spinCentreOffset.Length();
             float distToTangentPoint = MathF.Sqrt(distFromCentre * distFromCentre - SPIN_RADIUS * SPIN_RADIUS);
 
             if (distFromCentre > SPIN_RADIUS)
@@ -209,16 +209,16 @@ private static void calcSpinnerStartPosAndDirection(Vector2 prevPos, out Vector2
                 spinCentreOffset.Y = spinCentreOffset.X * MathF.Sin(angle) + spinCentreOffset.Y * MathF.Cos(angle);
 
                 // Set length to distToTangentPoint
-                spinCentreOffset.Normalize();
+                spinCentreOffset = Vector2.Normalize(spinCentreOffset);
                 spinCentreOffset *= distToTangentPoint;
 
                 // Move along the tangent line, now startPosition is at the tangent point.
                 startPosition = prevPos + spinCentreOffset;
             }
-            else if (spinCentreOffset.Length > 0)
+            else if (spinCentreOffset.Length() > 0)
             {
                 // Previous cursor position was inside spin circle, set startPosition to the nearest point on spin circle.
-                startPosition = SPINNER_CENTRE - spinCentreOffset * (SPIN_RADIUS / spinCentreOffset.Length);
+                startPosition = SPINNER_CENTRE - spinCentreOffset * (SPIN_RADIUS / spinCentreOffset.Length());
                 spinnerDirection = 1;
             }
             else
@@ -352,7 +352,7 @@ private void addHitObjectClickFrames(OsuHitObject h, Vector2 startPosition, floa
                 case Spinner spinner:
                     Vector2 difference = startPosition - SPINNER_CENTRE;
 
-                    float radius = difference.Length;
+                    float radius = difference.Length();
                     float angle = radius == 0 ? 0 : MathF.Atan2(difference.Y, difference.X);
 
                     double t;
diff --git a/osu.Game.Rulesets.Osu/Replays/OsuAutoGeneratorBase.cs b/osu.Game.Rulesets.Osu/Replays/OsuAutoGeneratorBase.cs
index a545a2819940..3c58161189cf 100644
--- a/osu.Game.Rulesets.Osu/Replays/OsuAutoGeneratorBase.cs
+++ b/osu.Game.Rulesets.Osu/Replays/OsuAutoGeneratorBase.cs
@@ -4,12 +4,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Beatmaps;
 using osu.Game.Replays;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Replays
 {
diff --git a/osu.Game.Rulesets.Osu/Replays/OsuReplayFrame.cs b/osu.Game.Rulesets.Osu/Replays/OsuReplayFrame.cs
index db2d9eaeda7a..121f5d7f7072 100644
--- a/osu.Game.Rulesets.Osu/Replays/OsuReplayFrame.cs
+++ b/osu.Game.Rulesets.Osu/Replays/OsuReplayFrame.cs
@@ -3,11 +3,11 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Beatmaps;
 using osu.Game.Replays.Legacy;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.Replays.Types;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Replays
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursor.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursor.cs
index 15838f3e1b4c..620b952a2a9f 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursor.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursor.cs
@@ -1,15 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Osu.UI.Cursor;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -47,7 +45,7 @@ public ArgonCursor()
                             RelativeSizeAxes = Axes.Both,
                             Masking = true,
                             BorderThickness = 2,
-                            BorderColour = Color4.White.Opacity(0.8f),
+                            BorderColour = Colour4.White.Opacity(0.8f),
                             Children = new Drawable[]
                             {
                                 new Box
@@ -66,12 +64,12 @@ public ArgonCursor()
                     Anchor = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
                     Scale = new Vector2(0.2f),
-                    Colour = new Color4(255, 255, 255, 255),
+                    Colour = new Colour4(255, 255, 255, 255),
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Glow,
                         Radius = 20,
-                        Colour = new Color4(171, 255, 255, 100),
+                        Colour = new Colour4(171, 255, 255, 100),
                     },
                 },
             };
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursorTrail.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursorTrail.cs
index 28991b4a6244..d0381dd78485 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursorTrail.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonCursorTrail.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Rulesets.Osu.UI.Cursor;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowCircle.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowCircle.cs
index ea21d71d5f45..d0e580b97bc1 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowCircle.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowCircle.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,7 +10,6 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -20,7 +18,7 @@ public partial class ArgonFollowCircle : FollowCircle
         private readonly CircularContainer circleContainer;
         private readonly Box circleFill;
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         [Resolved(canBeNull: true)]
         private DrawableHitObject? parentObject { get; set; }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowPoint.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowPoint.cs
index 2f4426404004..5e92c9001204 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowPoint.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonFollowPoint.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPiece.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPiece.cs
index 83992fc7854b..9d7638d821ae 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPiece.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPieceSliderTickMiss.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPieceSliderTickMiss.cs
index bd883d6e4cf8..af2b1228e295 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPieceSliderTickMiss.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonJudgementPieceSliderTickMiss.cs
@@ -8,7 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonMainCirclePiece.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonMainCirclePiece.cs
index dfe9bf702bfe..b2fe60cf4a16 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonMainCirclePiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonMainCirclePiece.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -17,8 +16,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Skinning.Default;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -41,7 +39,7 @@ public partial class ArgonMainCirclePiece : CompositeDrawable
         private readonly RingPiece border;
         private readonly OsuSpriteText number;
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
         private readonly IBindable<int> indexInCurrentCombo = new Bindable<int>();
         private readonly FlashPiece flash;
         private readonly Container kiaiContainer;
@@ -206,7 +204,7 @@ private void updateStateTransforms(DrawableHitObject drawableHitObject, ArmedSta
                             outerGradient.ResizeTo(OUTER_GRADIENT_SIZE * shrink_size, resize_duration, Easing.OutElasticHalf);
 
                             outerGradient
-                                .FadeColour(Color4.White, 80)
+                                .FadeColour(Colour4.White, 80)
                                 .Then()
                                 .FadeOut(flash_in_duration);
                         }
@@ -260,7 +258,7 @@ public FlashPiece()
 
             public bool HitLighting { get; set; }
 
-            private Color4 lastEdgeEffectColour;
+            private Colour4 lastEdgeEffectColour;
             private bool lastHitLighting;
 
             protected override void Update()
@@ -269,7 +267,7 @@ protected override void Update()
 
                 // Only update EdgeEffect when the inputs actually change to avoid
                 // redundant layout invalidations on every hit circle every frame.
-                Color4 currentColour = Colour;
+                Colour4 currentColour = Colour;
 
                 if (currentColour == lastEdgeEffectColour && HitLighting == lastHitLighting)
                     return;
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonReverseArrow.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonReverseArrow.cs
index bb5499b1a585..0060c2896188 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonReverseArrow.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonReverseArrow.cs
@@ -2,9 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -14,8 +14,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -23,7 +21,7 @@ public partial class ArgonReverseArrow : CompositeDrawable
     {
         private DrawableSliderRepeat drawableRepeat { get; set; } = null!;
 
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         private SpriteIcon icon = null!;
         private Container main = null!;
@@ -51,7 +49,7 @@ private void load(DrawableHitObject drawableObject, TextureStore textures)
                         new Circle
                         {
                             Size = new Vector2(40, 20),
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                         },
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBall.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBall.cs
index 360a2a5aab42..3bb3817f0fb5 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBall.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBall.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -23,7 +21,7 @@ public partial class ArgonSliderBall : CircularContainer
 
         private readonly Vector2 defaultIconScale = new Vector2(0.6f, 0.8f);
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         [Resolved(canBeNull: true)]
         private DrawableHitObject? parentObject { get; set; }
@@ -35,7 +33,7 @@ public ArgonSliderBall()
             Masking = true;
 
             BorderThickness = ArgonMainCirclePiece.GRADIENT_THICKNESS;
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
 
             InternalChildren = new Drawable[]
             {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBody.cs
index abb414c82cac..9f4d174f8812 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderBody.cs
@@ -1,10 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -30,14 +29,14 @@ protected override void LoadComplete()
 
         protected override Default.DrawableSliderPath CreateSliderPath() => new DrawableSliderPath();
 
-        protected override Color4 GetBodyAccentColour(ISkinSource skin, Color4 hitObjectAccentColour)
+        protected override Colour4 GetBodyAccentColour(ISkinSource skin, Colour4 hitObjectAccentColour)
         {
             return base.GetBodyAccentColour(skin, hitObjectAccentColour).Opacity(BodyAlpha);
         }
 
         private partial class DrawableSliderPath : Default.DrawableSliderPath
         {
-            protected override Color4 ColourAt(float position)
+            protected override Colour4 ColourAt(float position)
             {
                 if (CalculatedBorderPortion != 0f && position <= CalculatedBorderPortion)
                     return BorderColour;
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderScorePoint.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderScorePoint.cs
index e9ee432bacab..aac0d8cc45ff 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderScorePoint.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSliderScorePoint.cs
@@ -7,14 +7,13 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
     public partial class ArgonSliderScorePoint : CircularContainer
     {
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         public const float SIZE = 12;
 
@@ -25,7 +24,7 @@ private void load(DrawableHitObject hitObject)
             Origin = Anchor.Centre;
             Size = new Vector2(SIZE);
             BorderThickness = 3;
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
             Child = new Box
             {
                 RelativeSizeAxes = Axes.Both,
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerDisc.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerDisc.cs
index 079758c21ec9..a83e54ff1081 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerDisc.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerDisc.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Skinning.Default;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerProgressArc.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerProgressArc.cs
index 1de5b1f30904..e3246d33311c 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerProgressArc.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerProgressArc.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Runtime.InteropServices;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -17,7 +16,6 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -45,7 +43,7 @@ private void load(DrawableHitObject drawableHitObject)
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    Colour = Color4.White.Opacity(0.25f),
+                    Colour = Colour4.White.Opacity(0.25f),
                     RelativeSizeAxes = Axes.Both,
                     Progress = arc_fill,
                     Rotation = 90 - arc_fill * 180,
@@ -59,7 +57,7 @@ private void load(DrawableHitObject drawableHitObject)
                     RelativeSizeAxes = Axes.Both,
                     InnerRadius = arc_radius,
                     RoundedCaps = true,
-                    GlowColour = new Color4(171, 255, 255, 180)
+                    GlowColour = new Colour4(171, 255, 255, 180)
                 }
             };
         }
@@ -78,9 +76,9 @@ protected override void Update()
 
         private partial class ProgressFill : CircularProgress
         {
-            private Color4 glowColour = Color4.White;
+            private Colour4 glowColour = Colour4.White;
 
-            public Color4 GlowColour
+            public Colour4 GlowColour
             {
                 get => glowColour;
                 set
@@ -117,7 +115,7 @@ public ProgressFillDrawNode(CircularProgress source)
                 private IShader glowShader = null!;
                 private Quad glowQuad;
                 private float relativeGlowSize;
-                private Color4 glowColour;
+                private Colour4 glowColour;
 
                 public override void ApplyState()
                 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerTicks.cs b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerTicks.cs
index 4f0e1256d47d..35caf745f88f 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerTicks.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerTicks.cs
@@ -2,13 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Argon
 {
@@ -30,7 +29,7 @@ private void load()
                     RelativePositionAxes = Axes.Both,
                     Masking = true,
                     CornerRadius = 5,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     BorderThickness = 2f,
                     Size = new Vector2(30, 5),
                     Origin = Anchor.Centre,
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultApproachCircle.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultApproachCircle.cs
index 3a4c454bf19d..e314b4aa8aeb 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultApproachCircle.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultApproachCircle.cs
@@ -8,8 +8,8 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -18,7 +18,7 @@ public partial class DefaultApproachCircle : Sprite
         [Resolved]
         private DrawableHitObject drawableObject { get; set; } = null!;
 
-        private IBindable<Color4> accentColour = null!;
+        private IBindable<Colour4> accentColour = null!;
 
         [BackgroundDependencyLoader]
         private void load(TextureStore textures)
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultFollowCircle.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultFollowCircle.cs
index 4adbfc3928bb..42b2f0afd421 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultFollowCircle.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultFollowCircle.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -19,11 +18,11 @@ public DefaultFollowCircle()
                 RelativeSizeAxes = Axes.Both,
                 Masking = true,
                 BorderThickness = 5,
-                BorderColour = Color4.Orange,
+                BorderColour = Colour4.Orange,
                 Blending = BlendingParameters.Additive,
                 Child = new Box
                 {
-                    Colour = Color4.Orange,
+                    Colour = Colour4.Orange,
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0.2f,
                 }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultJudgementPieceSliderTickMiss.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultJudgementPieceSliderTickMiss.cs
index 04c15a1433bc..74d5dd5bb63f 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultJudgementPieceSliderTickMiss.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultJudgementPieceSliderTickMiss.cs
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultReverseArrow.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultReverseArrow.cs
index 5e2d04700d2b..f62c21b65e60 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultReverseArrow.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultReverseArrow.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSliderBall.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSliderBall.cs
index 9e964dcdef03..b4a57580e35c 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSliderBall.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSliderBall.cs
@@ -10,8 +10,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -38,13 +37,13 @@ private void load(ISkinSource skin)
                 Origin = Anchor.Centre,
                 Blending = BlendingParameters.Additive,
                 BorderThickness = 10,
-                BorderColour = Color4.White,
+                BorderColour = Colour4.White,
                 Alpha = 1,
                 Child = box = new Box
                 {
                     Blending = BlendingParameters.Additive,
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     AlwaysPresent = true,
                     Alpha = 0
                 }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSpinnerDisc.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSpinnerDisc.cs
index b498975a834d..478678f4c0f9 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSpinnerDisc.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSpinnerDisc.cs
@@ -2,9 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,8 +13,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -26,8 +24,8 @@ public partial class DefaultSpinnerDisc : CompositeDrawable
         private const float idle_alpha = 0.2f;
         private const float tracking_alpha = 0.4f;
 
-        private Color4 normalColour;
-        private Color4 completeColour;
+        private Colour4 normalColour;
+        private Colour4 completeColour;
 
         private SpinnerTicks ticks = null!;
 
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/DrawableSliderPath.cs b/osu.Game.Rulesets.Osu/Skinning/Default/DrawableSliderPath.cs
index a5f1189eeb59..c96293a76b18 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/DrawableSliderPath.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/DrawableSliderPath.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics.Lines;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -14,9 +14,9 @@ public abstract partial class DrawableSliderPath : SmoothPath
         private const float border_max_size = 8f;
         private const float border_min_size = 0f;
 
-        private Color4 borderColour = Color4.White;
+        private Colour4 borderColour = Colour4.White;
 
-        public Color4 BorderColour
+        public Colour4 BorderColour
         {
             get => borderColour;
             set
@@ -30,9 +30,9 @@ public Color4 BorderColour
             }
         }
 
-        private Color4 accentColour = Color4.White;
+        private Colour4 accentColour = Colour4.White;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/KiaiFlash.cs b/osu.Game.Rulesets.Osu/Skinning/Default/KiaiFlash.cs
index 11c2fd97e813..ab14a3d9b025 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/KiaiFlash.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/KiaiFlash.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -25,7 +24,7 @@ public KiaiFlash()
             Child = new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.White,
+                Colour = Colour4.White,
                 Alpha = 0f,
             };
         }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/MainCirclePiece.cs b/osu.Game.Rulesets.Osu/Skinning/Default/MainCirclePiece.cs
index bcea33f63c15..2e342c1b48ca 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/MainCirclePiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/MainCirclePiece.cs
@@ -9,7 +9,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -40,7 +39,7 @@ public MainCirclePiece()
             };
         }
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
         private readonly IBindable<int> indexInCurrentCombo = new Bindable<int>();
 
         [Resolved]
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/ManualSliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/Default/ManualSliderBody.cs
index 127d13730ab0..82c94faccf33 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/ManualSliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/ManualSliderBody.cs
@@ -3,7 +3,7 @@
 
 using System.Collections.Generic;
 using osu.Framework.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/NumberPiece.cs b/osu.Game.Rulesets.Osu/Skinning/Default/NumberPiece.cs
index eb49b7b8528c..947380ce192c 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/NumberPiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/NumberPiece.cs
@@ -1,14 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -36,7 +34,7 @@ public NumberPiece()
                     {
                         Type = EdgeEffectType.Glow,
                         Radius = 60,
-                        Colour = Color4.White.Opacity(0.5f),
+                        Colour = Colour4.White.Opacity(0.5f),
                     },
                 },
                 number = new SkinnableSpriteText(new OsuSkinComponentLookup(OsuSkinComponents.HitCircleText), _ => new OsuSpriteText
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/PlaySliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/Default/PlaySliderBody.cs
index 7b4388605714..67ee2dde9a3a 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/PlaySliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/PlaySliderBody.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -16,7 +16,7 @@ public abstract partial class PlaySliderBody : SnakingSliderBody
     {
         protected IBindable<float> ScaleBindable { get; private set; } = null!;
 
-        protected IBindable<Color4> AccentColourBindable { get; private set; } = null!;
+        protected IBindable<Colour4> AccentColourBindable { get; private set; } = null!;
 
         private IBindable<int> pathVersion = null!;
 
@@ -47,8 +47,8 @@ private void load(ISkinSource skin, DrawableHitObject drawableObject)
             BorderColour = GetBorderColour(skin);
         }
 
-        protected virtual Color4 GetBorderColour(ISkinSource skin) => Color4.White;
+        protected virtual Colour4 GetBorderColour(ISkinSource skin) => Colour4.White;
 
-        protected virtual Color4 GetBodyAccentColour(ISkinSource skin, Color4 hitObjectAccentColour) => hitObjectAccentColour;
+        protected virtual Colour4 GetBodyAccentColour(ISkinSource skin, Colour4 hitObjectAccentColour) => hitObjectAccentColour;
     }
 }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/RingPiece.cs b/osu.Game.Rulesets.Osu/Skinning/Default/RingPiece.cs
index c3bbd89ab60b..0083cfcb9cb5 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/RingPiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/RingPiece.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -20,7 +19,7 @@ public RingPiece(float thickness = 9)
 
             Masking = true;
             BorderThickness = thickness;
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
 
             Child = new Box
             {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerCentreLayer.cs b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerCentreLayer.cs
index f5c90bafbf13..694fe4aa46ca 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerCentreLayer.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerCentreLayer.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -10,8 +11,6 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -54,9 +53,9 @@ protected override void Update()
             symbol.Rotation = (float)Interpolation.Lerp(symbol.Rotation, spinner.RotationTracker.Rotation / 2, Math.Clamp(Math.Abs(Time.Elapsed) / 40, 0, 1));
         }
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerFill.cs b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerFill.cs
index 93f93b852163..5a1c798f3b2d 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerFill.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerFill.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -14,7 +13,7 @@ public partial class SpinnerFill : CircularContainer, IHasAccentColour
     {
         public readonly Box Disc;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => Disc.Colour;
             set
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerRotationTracker.cs b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerRotationTracker.cs
index 7cd1f39871aa..cc17531dc763 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerRotationTracker.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerRotationTracker.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerTicks.cs b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerTicks.cs
index f5f8d456f310..24c1bdeab24e 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerTicks.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Default/SpinnerTicks.cs
@@ -3,14 +3,12 @@
 
 using System;
 using System.Linq;
-using osu.Framework.Extensions.Color4Extensions;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
@@ -51,7 +49,7 @@ public SpinnerTicks()
             }
         }
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => Colour;
             set
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyApproachCircle.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyApproachCircle.cs
index 8ff85090ca53..0c278e14ab63 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyApproachCircle.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyApproachCircle.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -17,7 +17,7 @@ public partial class LegacyApproachCircle : Sprite
         [Resolved]
         private DrawableHitObject drawableObject { get; set; } = null!;
 
-        private IBindable<Color4> accentColour = null!;
+        private IBindable<Colour4> accentColour = null!;
 
         [BackgroundDependencyLoader]
         private void load(ISkinSource skin)
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursor.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursor.cs
index e526c4f14cf1..28bc35a4d720 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursor.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursor.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorParticles.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorParticles.cs
index afb80e89cb8e..8051933e113f 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorParticles.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorParticles.cs
@@ -18,8 +18,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -43,7 +42,7 @@ public partial class LegacyCursorParticles : CompositeDrawable, IKeyBindingHandl
         private void load(ISkinSource skin)
         {
             var texture = skin.GetTexture("star2");
-            var starBreakAdditive = skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.StarBreakAdditive)?.Value ?? new Color4(255, 182, 193, 255);
+            var starBreakAdditive = skin.GetConfig<OsuSkinColour, Colour4>(OsuSkinColour.StarBreakAdditive)?.Value ?? new Colour4(255, 182, 193, 255);
 
             // stable "magic ratio". see OsuPlayfieldAdjustmentContainer for full explanation.
             texture?.ScaleAdjust *= 1.6f;
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorTrail.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorTrail.cs
index adc683f066f8..871e4d6b69f3 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorTrail.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyCursorTrail.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -9,7 +10,6 @@
 using osu.Game.Configuration;
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyJudgementPieceSliderTickHit.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyJudgementPieceSliderTickHit.cs
index 8c89f4c9c861..f4ce8acec3b9 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyJudgementPieceSliderTickHit.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyJudgementPieceSliderTickHit.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Judgements;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyMainCirclePiece.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyMainCirclePiece.cs
index 1279d6953a67..f74814109a53 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyMainCirclePiece.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyMainCirclePiece.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -14,8 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -37,7 +36,7 @@ public partial class LegacyMainCirclePiece : CompositeDrawable
 
         private SkinnableSpriteText hitCircleText = null!;
 
-        private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly Bindable<Colour4> accentColour = new Bindable<Colour4>();
         private readonly IBindable<int> indexInCurrentCombo = new Bindable<int>();
 
         [Resolved(canBeNull: true)] // Can't really be null but required to handle potential of disposal before DI completes.
@@ -132,10 +131,10 @@ protected override void LoadComplete()
 
             accentColour.BindValueChanged(colour =>
             {
-                Color4 objectColour = colour.NewValue;
+                Colour4 objectColour = colour.NewValue;
                 int add = Math.Max(25, 300 - (int)(objectColour.R * 255) - (int)(objectColour.G * 255) - (int)(objectColour.B * 255));
 
-                var kiaiTintColour = new Color4(
+                var kiaiTintColour = new Colour4(
                     (byte)Math.Min((byte)(objectColour.R * 255) + add, 255),
                     (byte)Math.Min((byte)(objectColour.G * 255) + add, 255),
                     (byte)Math.Min((byte)(objectColour.B * 255) + add, 255),
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyNewStyleSpinner.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyNewStyleSpinner.cs
index 5d09267c21d4..719a291db36a 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyNewStyleSpinner.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyNewStyleSpinner.cs
@@ -10,8 +10,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -27,7 +26,7 @@ public partial class LegacyNewStyleSpinner : LegacySpinner
         private Sprite spinningMiddle = null!;
         private Sprite fixedMiddle = null!;
 
-        private readonly Color4 glowColour = new Color4(3, 151, 255, 255);
+        private readonly Colour4 glowColour = new Colour4(3, 151, 255, 255);
 
         private Container scaleContainer = null!;
 
@@ -110,10 +109,10 @@ protected override void UpdateStateTransforms(DrawableHitObject drawableHitObjec
 
                     using (BeginAbsoluteSequence(spinner.StartTime - spinner.TimePreempt))
                     {
-                        fixedMiddle.FadeColour(Color4.White);
+                        fixedMiddle.FadeColour(Colour4.White);
 
                         using (BeginDelayedSequence(spinner.TimePreempt))
-                            fixedMiddle.FadeColour(Color4.Red, spinner.Duration);
+                            fixedMiddle.FadeColour(Colour4.Red, spinner.Duration);
                     }
 
                     if (state == ArmedState.Hit)
@@ -126,7 +125,7 @@ protected override void UpdateStateTransforms(DrawableHitObject drawableHitObjec
 
                 case DrawableSpinnerBonusTick:
                     if (state == ArmedState.Hit)
-                        glow.FlashColour(Color4.White, 200);
+                        glow.FlashColour(Colour4.White, 200);
 
                     break;
             }
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyOldStyleSpinner.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyOldStyleSpinner.cs
index c75983f3d2bf..7338b8d14d2e 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyOldStyleSpinner.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyOldStyleSpinner.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +12,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -41,7 +40,7 @@ private void load(ISkinSource source)
                     Anchor = Anchor.TopCentre,
                     Origin = Anchor.Centre,
                     Texture = source.GetTexture("spinner-background"),
-                    Colour = source.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.SpinnerBackground)?.Value ?? new Color4(100, 100, 100, 255),
+                    Colour = source.GetConfig<OsuSkinColour, Colour4>(OsuSkinColour.SpinnerBackground)?.Value ?? new Colour4(100, 100, 100, 255),
                     Scale = new Vector2(SPRITE_SCALE),
                     Y = SPINNER_Y_CENTRE,
                 },
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyReverseArrow.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyReverseArrow.cs
index 85c895006bda..8ee4943b3170 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyReverseArrow.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacyReverseArrow.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -14,8 +15,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -25,7 +24,7 @@ public partial class LegacyReverseArrow : CompositeDrawable
 
         private Drawable proxy = null!;
 
-        private Bindable<Color4> accentColour = null!;
+        private Bindable<Colour4> accentColour = null!;
 
         private bool textureIsDefaultSkin;
 
@@ -68,7 +67,7 @@ protected override void LoadComplete()
             accentColour = drawableRepeat.AccentColour.GetBoundCopy();
             accentColour.BindValueChanged(c =>
             {
-                arrow.Colour = textureIsDefaultSkin && c.NewValue.R + c.NewValue.G + c.NewValue.B > 600 / 255f ? Color4.Black : Color4.White;
+                arrow.Colour = textureIsDefaultSkin && c.NewValue.R + c.NewValue.G + c.NewValue.B > 600 / 255f ? Colour4.Black : Colour4.White;
             }, true);
         }
 
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBall.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBall.cs
index 89a558e81bb0..e4cf635f3380 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBall.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBall.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -12,8 +13,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -30,7 +29,7 @@ public partial class LegacySliderBall : CompositeDrawable
         private TextureAnimation ballAnimation = null!;
         private Texture[] ballTextures = null!;
 
-        public Color4 BallColour => ballAnimation.Colour;
+        public Colour4 BallColour => ballAnimation.Colour;
 
         public LegacySliderBall(ISkin skin)
         {
@@ -44,7 +43,7 @@ private void load()
         {
             Vector2 maxSize = OsuLegacySkinTransformer.MAX_FOLLOW_CIRCLE_AREA_SIZE;
 
-            var ballColour = skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.SliderBall)?.Value ?? Color4.White;
+            var ballColour = skin.GetConfig<OsuSkinColour, Colour4>(OsuSkinColour.SliderBall)?.Value ?? Colour4.White;
             ballTextures = skin.GetTextures("sliderb", default, default, true, "", maxSize, out _);
 
             InternalChildren = new Drawable[]
@@ -54,7 +53,7 @@ private void load()
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Texture = skin.GetTexture("sliderb-nd")?.WithMaximumSize(maxSize),
-                    Colour = new Color4(5, 5, 5, 255),
+                    Colour = new Colour4(5, 5, 5, 255),
                 },
                 ballAnimation = new LegacySkinExtensions.SkinnableTextureAnimation
                 {
@@ -76,7 +75,7 @@ private void load()
             onHitObjectApplied(parentObject);
         }
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly IBindable<Colour4> accentColour = new Bindable<Colour4>();
 
         protected override void LoadComplete()
         {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBody.cs
index 43b7260e2ca6..91f9e17179ce 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySliderBody.cs
@@ -2,12 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
@@ -15,16 +14,16 @@ public partial class LegacySliderBody : PlaySliderBody
     {
         protected override DrawableSliderPath CreateSliderPath() => new LegacyDrawableSliderPath();
 
-        protected override Color4 GetBorderColour(ISkinSource skin)
-            => skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.SliderBorder)?.Value ?? Color4.White;
+        protected override Colour4 GetBorderColour(ISkinSource skin)
+            => skin.GetConfig<OsuSkinColour, Colour4>(OsuSkinColour.SliderBorder)?.Value ?? Colour4.White;
 
-        protected override Color4 GetBodyAccentColour(ISkinSource skin, Color4 hitObjectAccentColour)
+        protected override Colour4 GetBodyAccentColour(ISkinSource skin, Colour4 hitObjectAccentColour)
             // legacy skins use a constant value for slider track alpha, regardless of the source colour.
-            => (skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.SliderTrackOverride)?.Value ?? hitObjectAccentColour).Opacity(0.7f);
+            => (skin.GetConfig<OsuSkinColour, Colour4>(OsuSkinColour.SliderTrackOverride)?.Value ?? hitObjectAccentColour).Opacity(0.7f);
 
         private partial class LegacyDrawableSliderPath : DrawableSliderPath
         {
-            protected override Color4 ColourAt(float position)
+            protected override Colour4 ColourAt(float position)
             {
                 // https://github.com/peppy/osu-stable-reference/blob/3ea48705eb67172c430371dcfc8a16a002ed0d3d/osu!/Graphics/Renderers/MmSliderRendererGL.cs#L99
                 // float aaWidth = Math.Min(Math.Max(0.5f / PathRadius, 3.0f / 256.0f), 1.0f / 16.0f);
@@ -32,16 +31,16 @@ protected override Color4 ColourAt(float position)
                 // this might be related to SmoothPath applying AA internally, but disabling that does not seem to have much of an effect.
                 const float aa_width = 0f;
 
-                Color4 shadow = new Color4(0, 0, 0, 0.25f);
-                Color4 outerColour = AccentColour.Darken(0.1f);
-                Color4 innerColour = lighten(AccentColour, 0.5f);
+                Colour4 shadow = new Colour4(0, 0, 0, 0.25f);
+                Colour4 outerColour = AccentColour.Darken(0.1f);
+                Colour4 innerColour = lighten(AccentColour, 0.5f);
 
                 // https://github.com/peppy/osu-stable-reference/blob/3ea48705eb67172c430371dcfc8a16a002ed0d3d/osu!/Graphics/Renderers/MmSliderRendererGL.cs#L59-L70
                 const float shadow_portion = 1 - (OsuLegacySkinTransformer.LEGACY_CIRCLE_RADIUS / OsuHitObject.OBJECT_RADIUS);
                 const float border_portion = 0.1875f;
 
                 if (position <= shadow_portion - aa_width)
-                    return LegacyUtils.InterpolateNonLinear(position, Color4.Black.Opacity(0f), shadow, 0, shadow_portion - aa_width);
+                    return LegacyUtils.InterpolateNonLinear(position, Colour4.Black.Opacity(0f), shadow, 0, shadow_portion - aa_width);
 
                 if (position <= shadow_portion + aa_width)
                     return LegacyUtils.InterpolateNonLinear(position, shadow, BorderColour, shadow_portion - aa_width, shadow_portion + aa_width);
@@ -58,10 +57,10 @@ protected override Color4 ColourAt(float position)
             /// <summary>
             /// Lightens a colour in a way more friendly to dark or strong colours.
             /// </summary>
-            private static Color4 lighten(Color4 color, float amount)
+            private static Colour4 lighten(Colour4 color, float amount)
             {
                 amount *= 0.5f;
-                return new Color4(
+                return new Colour4(
                     Math.Min(1, color.R * (1 + 0.5f * amount) + 1 * amount),
                     Math.Min(1, color.G * (1 + 0.5f * amount) + 1 * amount),
                     Math.Min(1, color.B * (1 + 0.5f * amount) + 1 * amount),
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySpinner.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySpinner.cs
index 569e01ae56e8..8159079834e4 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySpinner.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/LegacySpinner.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Globalization;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/Legacy/OsuLegacySkinTransformer.cs b/osu.Game.Rulesets.Osu/Skinning/Legacy/OsuLegacySkinTransformer.cs
index 219e754dccd7..a527684c27e1 100644
--- a/osu.Game.Rulesets.Osu/Skinning/Legacy/OsuLegacySkinTransformer.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/Legacy/OsuLegacySkinTransformer.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Textures;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Osu/Skinning/SliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/SliderBody.cs
index d7818cb1dc98..906e34f594b4 100644
--- a/osu.Game.Rulesets.Osu/Skinning/SliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/SliderBody.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Lines;
 using osu.Game.Rulesets.Osu.Skinning.Default;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.Skinning
 {
@@ -38,7 +37,7 @@ public virtual float PathRadius
         /// <summary>
         /// Used to colour the path.
         /// </summary>
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => path.AccentColour;
             set
@@ -53,7 +52,7 @@ public Color4 AccentColour
         /// <summary>
         /// Used to colour the path border.
         /// </summary>
-        public new Color4 BorderColour
+        public new Colour4 BorderColour
         {
             get => path.BorderColour;
             set
@@ -94,8 +93,8 @@ public virtual void RecyclePath()
             {
                 p.Position = path?.Position ?? Vector2.Zero;
                 p.PathRadius = path?.PathRadius ?? 10;
-                p.AccentColour = path?.AccentColour ?? Color4.White;
-                p.BorderColour = path?.BorderColour ?? Color4.White;
+                p.AccentColour = path?.AccentColour ?? Colour4.White;
+                p.BorderColour = path?.BorderColour ?? Colour4.White;
                 p.BorderSize = path?.BorderSize ?? 1;
                 p.Vertices = path?.Vertices ?? [];
             });
@@ -116,13 +115,13 @@ private partial class DefaultDrawableSliderPath : DrawableSliderPath
             private const float opacity_at_centre = 0.3f;
             private const float opacity_at_edge = 0.8f;
 
-            protected override Color4 ColourAt(float position)
+            protected override Colour4 ColourAt(float position)
             {
                 if (CalculatedBorderPortion != 0f && position <= CalculatedBorderPortion)
                     return BorderColour;
 
                 position -= CalculatedBorderPortion;
-                return new Color4(AccentColour.R, AccentColour.G, AccentColour.B, (opacity_at_edge - (opacity_at_edge - opacity_at_centre) * position / GRADIENT_PORTION) * AccentColour.A);
+                return new Colour4(AccentColour.R, AccentColour.G, AccentColour.B, (opacity_at_edge - (opacity_at_edge - opacity_at_centre) * position / GRADIENT_PORTION) * AccentColour.A);
             }
         }
     }
diff --git a/osu.Game.Rulesets.Osu/Skinning/SmokeSegment.cs b/osu.Game.Rulesets.Osu/Skinning/SmokeSegment.cs
index 2962bce635cd..e57b5b85d016 100644
--- a/osu.Game.Rulesets.Osu/Skinning/SmokeSegment.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/SmokeSegment.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -15,8 +16,6 @@
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Skinning
 {
@@ -92,14 +91,14 @@ public void AddPosition(Vector2 position, double time)
         {
             lastPosition ??= position;
 
-            float delta = (position - (Vector2)lastPosition).LengthFast;
+            float delta = (position - (Vector2)lastPosition).Length();
             totalDistance += delta;
             int count = (int)(totalDistance / pointInterval);
 
             if (count > 0)
             {
                 Vector2 increment = position - (Vector2)lastPosition;
-                increment.NormalizeFast();
+                increment = Vector2.Normalize(increment);
 
                 Vector2 pointPos = (pointInterval - (totalDistance - delta)) * increment + (Vector2)lastPosition;
                 increment *= pointInterval;
@@ -269,13 +268,13 @@ protected sealed override void Draw(IRenderer renderer)
                 renderer.PopLocalMatrix();
             }
 
-            protected Color4 ColourAtPosition(Vector2 localPos) => DrawColourInfo.Colour.HasSingleColour
+            protected Colour4 ColourAtPosition(Vector2 localPos) => DrawColourInfo.Colour.HasSingleColour
                 ? ((SRGBColour)DrawColourInfo.Colour).Linear
                 : DrawColourInfo.Colour.Interpolate(Vector2.Divide(localPos, drawSize)).Linear;
 
-            protected virtual Color4 PointColour(SmokePoint point)
+            protected virtual Colour4 PointColour(SmokePoint point)
             {
-                var color = Color4.White;
+                var color = Colour4.White;
 
                 double timeDoingFinalFadeOut = finalFadeOutTime - point.Time / final_fade_out_speed;
 
@@ -283,7 +282,7 @@ protected virtual Color4 PointColour(SmokePoint point)
                 {
                     float fraction = Math.Clamp((float)(timeDoingFinalFadeOut / final_fade_out_duration), 0, 1);
                     fraction = MathF.Pow(fraction, 5);
-                    color.A = (1 - fraction) * re_fade_in_alpha;
+                    color = new Colour4(color.R, color.G, color.B, (1 - fraction) * re_fade_in_alpha);
                 }
                 else
                 {
@@ -292,7 +291,7 @@ protected virtual Color4 PointColour(SmokePoint point)
                     if (timeDoingInitialFadeOut > 0)
                     {
                         float fraction = Math.Clamp((float)(timeDoingInitialFadeOut / initial_fade_out_duration), 0, 1);
-                        color.A = (1 - fraction) * initial_alpha;
+                        color = new Colour4(color.R, color.G, color.B, (1 - fraction) * initial_alpha);
                     }
 
                     if (point.Time > firstVisiblePointTimeAfterSmokeEnded)
@@ -303,7 +302,7 @@ protected virtual Color4 PointColour(SmokePoint point)
                         {
                             float fraction = Math.Clamp((float)(timeDoingReFadeIn / re_fade_in_duration), 0, 1);
                             fraction = 1 - MathF.Pow(1 - fraction, 5);
-                            color.A = fraction * (re_fade_in_alpha - color.A) + color.A;
+                            color = new Colour4(color.R, color.G, color.B, fraction * (re_fade_in_alpha - color.A) + color.A);
                         }
                     }
                 }
@@ -344,7 +343,7 @@ private void drawPointQuad(IRenderer renderer, SmokePoint point, RectangleF text
                     return;
 
                 var dir = PointDirection(point, index);
-                var ortho = dir.PerpendicularLeft;
+                var ortho = dir.PerpendicularLeft();
                 dir *= scale * width;
                 ortho *= scale * height;
 
diff --git a/osu.Game.Rulesets.Osu/Skinning/SnakingSliderBody.cs b/osu.Game.Rulesets.Osu/Skinning/SnakingSliderBody.cs
index 4645987a9fa9..cd38e7a22479 100644
--- a/osu.Game.Rulesets.Osu/Skinning/SnakingSliderBody.cs
+++ b/osu.Game.Rulesets.Osu/Skinning/SnakingSliderBody.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.Skinning
 {
diff --git a/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs b/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
index 4a028d677a04..f679462f378f 100644
--- a/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
+++ b/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -17,8 +18,6 @@
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.Statistics
 {
@@ -83,7 +82,7 @@ private void load()
                                 Size = new Vector2(inner_portion),
                                 Masking = true,
                                 BorderThickness = line_thickness,
-                                BorderColour = Color4.White,
+                                BorderColour = Colour4.White,
                                 Child = new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
@@ -198,14 +197,14 @@ private void load()
                     {
                         points[r][c] = new HitPoint(this)
                         {
-                            BaseColour = new Color4(102, 255, 204, 255)
+                            BaseColour = new Colour4(102, 255, 204, 255)
                         };
                     }
                     else
                     {
                         points[r][c] = new MissPoint
                         {
-                            BaseColour = new Color4(255, 102, 102, 255)
+                            BaseColour = new Colour4(255, 102, 102, 255)
                         };
                     }
                 }
@@ -299,7 +298,7 @@ private abstract partial class GridPoint : CompositeDrawable
             /// <summary>
             /// The base colour which will be lightened/darkened depending on the value of this <see cref="HitPoint"/>.
             /// </summary>
-            public Color4 BaseColour;
+            public Colour4 BaseColour;
 
             public override bool IsPresent => Count > 0;
 
diff --git a/osu.Game.Rulesets.Osu/UI/Cursor/CursorRippleVisualiser.cs b/osu.Game.Rulesets.Osu/UI/Cursor/CursorRippleVisualiser.cs
index f848b34596c6..d9556b32de40 100644
--- a/osu.Game.Rulesets.Osu/UI/Cursor/CursorRippleVisualiser.cs
+++ b/osu.Game.Rulesets.Osu/UI/Cursor/CursorRippleVisualiser.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI.Cursor
 {
diff --git a/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs b/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
index 9024f1715d29..cf31adbb76e1 100644
--- a/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
+++ b/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -6,6 +6,7 @@
 using System;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
@@ -18,9 +19,7 @@
 using osu.Framework.Input;
 using osu.Framework.Input.Events;
 using osu.Framework.Timing;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Graphics.ES30;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Osu.UI.Cursor
 {
@@ -194,7 +193,7 @@ protected void AddTrail(Vector2 position)
 
                     Vector2 pos1 = lastPosition.Value;
                     Vector2 diff = pos2 - pos1;
-                    float distance = diff.Length;
+                    float distance = diff.Length();
                     Vector2 direction = diff / distance;
 
                     float interval = Texture.DisplayWidth * CursorScale.X / 2.5f * IntervalMultiplier;
@@ -408,7 +407,7 @@ public struct TexturedTrailVertex : IEquatable<TexturedTrailVertex>, IVertex
             public Vector2 Position;
 
             [VertexMember(4, VertexAttribPointerType.Float)]
-            public Color4 Colour;
+            public Colour4 Colour;
 
             [VertexMember(2, VertexAttribPointerType.Float)]
             public Vector2 TexturePosition;
diff --git a/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursor.cs b/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursor.cs
index e84fb9e2d667..556a20475345 100644
--- a/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursor.cs
+++ b/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursor.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -15,8 +14,7 @@
 using osu.Game.Rulesets.Osu.Skinning;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI.Cursor
 {
@@ -151,11 +149,11 @@ public DefaultCursor()
                         RelativeSizeAxes = Axes.Both,
                         Masking = true,
                         BorderThickness = SIZE / 6,
-                        BorderColour = Color4.White,
+                        BorderColour = Colour4.White,
                         EdgeEffect = new EdgeEffectParameters
                         {
                             Type = EdgeEffectType.Shadow,
-                            Colour = Color4.Pink.Opacity(0.5f),
+                            Colour = Colour4.Pink.Opacity(0.5f),
                             Radius = 5,
                         },
                         Children = new Drawable[]
@@ -173,7 +171,7 @@ public DefaultCursor()
                                 RelativeSizeAxes = Axes.Both,
                                 Masking = true,
                                 BorderThickness = SIZE / 3,
-                                BorderColour = Color4.White.Opacity(0.5f),
+                                BorderColour = Colour4.White.Opacity(0.5f),
                                 Children = new Drawable[]
                                 {
                                     new Box
@@ -192,12 +190,12 @@ public DefaultCursor()
                         Anchor = Anchor.Centre,
                         RelativeSizeAxes = Axes.Both,
                         Scale = new Vector2(0.14f),
-                        Colour = new Color4(34, 93, 204, 255),
+                        Colour = new Colour4(34, 93, 204, 255),
                         EdgeEffect = new EdgeEffectParameters
                         {
                             Type = EdgeEffectType.Glow,
                             Radius = 8,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                         },
                     },
                 };
diff --git a/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursorContainer.cs b/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursorContainer.cs
index e04382d194d4..d71751b77b49 100644
--- a/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursorContainer.cs
+++ b/osu.Game.Rulesets.Osu/UI/Cursor/OsuCursorContainer.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Osu.Configuration;
 using osu.Game.Rulesets.UI;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.UI.Cursor
 {
diff --git a/osu.Game.Rulesets.Osu/UI/DrawableOsuRuleset.cs b/osu.Game.Rulesets.Osu/UI/DrawableOsuRuleset.cs
index 12d536346926..340ee8668aa6 100644
--- a/osu.Game.Rulesets.Osu/UI/DrawableOsuRuleset.cs
+++ b/osu.Game.Rulesets.Osu/UI/DrawableOsuRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -20,7 +20,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
diff --git a/osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs b/osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs
index e379c4431468..822915648595 100644
--- a/osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs
+++ b/osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -22,7 +22,7 @@
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
diff --git a/osu.Game.Rulesets.Osu/UI/OsuPlayfieldAdjustmentContainer.cs b/osu.Game.Rulesets.Osu/UI/OsuPlayfieldAdjustmentContainer.cs
index 5eee95a4f79a..08f9cd14e621 100644
--- a/osu.Game.Rulesets.Osu/UI/OsuPlayfieldAdjustmentContainer.cs
+++ b/osu.Game.Rulesets.Osu/UI/OsuPlayfieldAdjustmentContainer.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
diff --git a/osu.Game.Rulesets.Osu/UI/OsuReplayRecorder.cs b/osu.Game.Rulesets.Osu/UI/OsuReplayRecorder.cs
index 545b31bf2944..d675490c311e 100644
--- a/osu.Game.Rulesets.Osu/UI/OsuReplayRecorder.cs
+++ b/osu.Game.Rulesets.Osu/UI/OsuReplayRecorder.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
diff --git a/osu.Game.Rulesets.Osu/UI/OsuResumeOverlay.cs b/osu.Game.Rulesets.Osu/UI/OsuResumeOverlay.cs
index b045b829607a..b43dea134592 100644
--- a/osu.Game.Rulesets.Osu/UI/OsuResumeOverlay.cs
+++ b/osu.Game.Rulesets.Osu/UI/OsuResumeOverlay.cs
@@ -13,7 +13,6 @@
 using osu.Game.Rulesets.Osu.UI.Cursor;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
@@ -162,7 +161,7 @@ public void Appear() => Schedule(() =>
 
             private void updateColour()
             {
-                this.FadeColour(IsHovered ? Color4.White : Color4.Orange, 400, Easing.OutQuint);
+                this.FadeColour(IsHovered ? Colour4.White : Colour4.Orange, 400, Easing.OutQuint);
             }
         }
 
diff --git a/osu.Game.Rulesets.Osu/UI/OsuTouchInputMapper.cs b/osu.Game.Rulesets.Osu/UI/OsuTouchInputMapper.cs
index e815d7873ef5..3009ce4528ce 100644
--- a/osu.Game.Rulesets.Osu/UI/OsuTouchInputMapper.cs
+++ b/osu.Game.Rulesets.Osu/UI/OsuTouchInputMapper.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -10,7 +10,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Input.StateChanges;
 using osu.Game.Configuration;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
@@ -125,7 +125,7 @@ private void handleTouchMovement(TouchEvent touchEvent)
             if (touchEvent is TouchMoveEvent moveEvent)
             {
                 var trackedTouch = trackedTouches.Single(t => t.Source == touchEvent.Touch.Source);
-                trackedTouch.DistanceTravelled += moveEvent.Delta.Length;
+                trackedTouch.DistanceTravelled += moveEvent.Delta.Length();
             }
 
             // Movement should only be tracked for the most recent touch.
diff --git a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/AnalysisFrameEntry.cs b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/AnalysisFrameEntry.cs
index 116bccc74705..36e61d018ff3 100644
--- a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/AnalysisFrameEntry.cs
+++ b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/AnalysisFrameEntry.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics.Performance;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI.ReplayAnalysis
 {
diff --git a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/ClickMarker.cs b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/ClickMarker.cs
index 9788ea1aa9bc..09e84628af05 100644
--- a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/ClickMarker.cs
+++ b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/ClickMarker.cs
@@ -2,13 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Osu.UI.ReplayAnalysis
 {
@@ -42,10 +41,10 @@ private void load()
                     Colour = Colours.Gray5,
                     Masking = true,
                     BorderThickness = 2.2f,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     Child = new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                         AlwaysPresent = true,
                         Alpha = 0,
diff --git a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/CursorPathContainer.cs b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/CursorPathContainer.cs
index 76de6c472402..c1ae9610c56a 100644
--- a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/CursorPathContainer.cs
+++ b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/CursorPathContainer.cs
@@ -3,11 +3,11 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Lines;
 using osu.Framework.Graphics.Performance;
 using osu.Game.Graphics;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.UI.ReplayAnalysis
 {
diff --git a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/FrameMarker.cs b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/FrameMarker.cs
index 35ee1445683a..44bcc1fc3306 100644
--- a/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/FrameMarker.cs
+++ b/osu.Game.Rulesets.Osu/UI/ReplayAnalysis/FrameMarker.cs
@@ -2,11 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.UI.ReplayAnalysis
 {
diff --git a/osu.Game.Rulesets.Osu/UI/SmokeContainer.cs b/osu.Game.Rulesets.Osu/UI/SmokeContainer.cs
index ff28444e82b6..650a868617e3 100644
--- a/osu.Game.Rulesets.Osu/UI/SmokeContainer.cs
+++ b/osu.Game.Rulesets.Osu/UI/SmokeContainer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Osu.Skinning;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Osu.UI
 {
diff --git a/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.Reposition.cs b/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.Reposition.cs
index bad70f2d1edf..e9e90eeca820 100644
--- a/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.Reposition.cs
+++ b/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.Reposition.cs
@@ -4,11 +4,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Utils
 {
@@ -43,7 +43,7 @@ public static List<ObjectPositionInfo> GeneratePositionInfos(IEnumerable<OsuHitO
                 positionInfos.Add(positionInfo = new ObjectPositionInfo(hitObject)
                 {
                     RelativeAngle = relativeAngle,
-                    DistanceFromPrevious = relativePosition.Length
+                    DistanceFromPrevious = relativePosition.Length()
                 });
 
                 if (hitObject is Slider slider)
diff --git a/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.cs b/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.cs
index dcd15ef8e87c..bf38118e1821 100644
--- a/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.cs
+++ b/osu.Game.Rulesets.Osu/Utils/OsuHitObjectGenerationUtils.cs
@@ -3,11 +3,11 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Utils
 {
@@ -100,8 +100,8 @@ public static Vector2 RotateVectorTowardsVector(Vector2 initial, Vector2 destina
             float finalAngleRad = initialAngleRad + rotationRatio * diff;
 
             return new Vector2(
-                initial.Length * MathF.Cos(finalAngleRad),
-                initial.Length * MathF.Sin(finalAngleRad)
+                initial.Length() * MathF.Cos(finalAngleRad),
+                initial.Length() * MathF.Sin(finalAngleRad)
             );
         }
 
@@ -132,7 +132,7 @@ public static void ReflectVerticallyAlongPlayfield(OsuHitObject osuObject)
             if (osuObject is not Slider slider)
                 return;
 
-            static void reflectControlPoint(PathControlPoint point) => point.Position = new Vector2(point.Position.X, -point.Position.Y);
+            static void reflectControlPoint(PathControlPoint point) => point.Position = point.Position with { Y = -point.Position.Y };
 
             modifySlider(slider, reflectControlPoint);
         }
@@ -143,7 +143,7 @@ public static void ReflectVerticallyAlongPlayfield(OsuHitObject osuObject)
         /// <param name="slider">The slider to be flipped.</param>
         public static void FlipSliderInPlaceHorizontally(Slider slider)
         {
-            static void flipControlPoint(PathControlPoint point) => point.Position = new Vector2(-point.Position.X, point.Position.Y);
+            static void flipControlPoint(PathControlPoint point) => point.Position = point.Position with { X = -point.Position.X };
 
             modifySlider(slider, flipControlPoint);
         }
@@ -178,7 +178,7 @@ private static void modifySlider(Slider slider, Action<PathControlPoint> modifyC
         private static Vector2 rotateVector(Vector2 vector, float rotation)
         {
             float angle = MathF.Atan2(vector.Y, vector.X) + rotation;
-            float length = vector.Length;
+            float length = vector.Length();
             return new Vector2(
                 length * MathF.Cos(angle),
                 length * MathF.Sin(angle)
diff --git a/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneEditorPlacement.cs b/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneEditorPlacement.cs
index 0199e98af0b7..dfbaa8e1888f 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneEditorPlacement.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneEditorPlacement.cs
@@ -7,7 +7,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneTaikoEditorTestGameplay.cs b/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneTaikoEditorTestGameplay.cs
index 2422e62571a1..ee841ce90013 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneTaikoEditorTestGameplay.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Editor/TestSceneTaikoEditorTestGameplay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps.IO;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Editor
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/Mods/TestSceneTaikoModFlashlight.cs b/osu.Game.Rulesets.Taiko.Tests/Mods/TestSceneTaikoModFlashlight.cs
index 6dbd3478f16c..158c461d0f24 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Mods/TestSceneTaikoModFlashlight.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Mods/TestSceneTaikoModFlashlight.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Taiko.Mods;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Mods
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableSwell.cs b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableSwell.cs
index 286b16aa349b..56689bdefcc5 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableSwell.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableSwell.cs
@@ -7,6 +7,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
@@ -20,7 +21,7 @@ public void TestHits()
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-                Scale = new osuTK.Vector2(0.5f),
+                Scale = new Vector2(0.5f),
             }));
         }
 
diff --git a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs
index 900d6523cf55..b9d28740b215 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneTaikoPlayfield.cs b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneTaikoPlayfield.cs
index d1a8a048edec..8902d130d575 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneTaikoPlayfield.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneTaikoPlayfield.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/TestSceneHits.cs b/osu.Game.Rulesets.Taiko.Tests/TestSceneHits.cs
index fd850a9a67ac..3eeee35e5ca0 100644
--- a/osu.Game.Rulesets.Taiko.Tests/TestSceneHits.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/TestSceneHits.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Tests
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/TestSceneReplayRecording.cs b/osu.Game.Rulesets.Taiko.Tests/TestSceneReplayRecording.cs
index bd79bbe8cf61..554ed2cd4b8a 100644
--- a/osu.Game.Rulesets.Taiko.Tests/TestSceneReplayRecording.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/TestSceneReplayRecording.cs
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Taiko.Replays;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Taiko.Tests
 {
diff --git a/osu.Game.Rulesets.Taiko.Tests/TestSceneTaikoPlayerScroller.cs b/osu.Game.Rulesets.Taiko.Tests/TestSceneTaikoPlayerScroller.cs
index c2aa819c3a9f..40dc1a18ba99 100644
--- a/osu.Game.Rulesets.Taiko.Tests/TestSceneTaikoPlayerScroller.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/TestSceneTaikoPlayerScroller.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Taiko.Skinning.Legacy;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Tests
 {
diff --git a/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPiece.cs b/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPiece.cs
index 3401f944e4f7..aaa5b6940792 100644
--- a/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPiece.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
 {
@@ -18,7 +17,7 @@ public HitPiece()
             {
                 Masking = true,
                 BorderThickness = 10,
-                BorderColour = Color4.Yellow,
+                BorderColour = Colour4.Yellow,
                 RelativeSizeAxes = Axes.Both,
                 Children = new Drawable[]
                 {
diff --git a/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPlacementBlueprint.cs b/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPlacementBlueprint.cs
index ce2a674e92ec..e9498ecdd2d9 100644
--- a/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPlacementBlueprint.cs
@@ -6,8 +6,8 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Taiko/Edit/Blueprints/LengthPiece.cs b/osu.Game.Rulesets.Taiko/Edit/Blueprints/LengthPiece.cs
index a56f92a02605..ec1e2dcd7066 100644
--- a/osu.Game.Rulesets.Taiko/Edit/Blueprints/LengthPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/Blueprints/LengthPiece.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
 {
@@ -17,7 +16,7 @@ public LengthPiece()
             InternalChild = new Container
             {
                 Masking = true,
-                Colour = Color4.Yellow,
+                Colour = Colour4.Yellow,
                 RelativeSizeAxes = Axes.Both,
                 Children = new Drawable[]
                 {
diff --git a/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSelectionBlueprint.cs b/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSelectionBlueprint.cs
index 2a824d1f685a..6ca3f0b32f65 100644
--- a/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSelectionBlueprint.cs
@@ -1,10 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
 {
@@ -30,8 +30,8 @@ protected override void Update()
             var topLeft = new Vector2(float.MaxValue, float.MaxValue);
             var bottomRight = new Vector2(float.MinValue, float.MinValue);
 
-            topLeft = Vector2.ComponentMin(topLeft, Parent!.ToLocalSpace(DrawableObject.ScreenSpaceDrawQuad.TopLeft));
-            bottomRight = Vector2.ComponentMax(bottomRight, Parent!.ToLocalSpace(DrawableObject.ScreenSpaceDrawQuad.BottomRight));
+            topLeft = Vector2.Min(topLeft, Parent!.ToLocalSpace(DrawableObject.ScreenSpaceDrawQuad.TopLeft));
+            bottomRight = Vector2.Max(bottomRight, Parent!.ToLocalSpace(DrawableObject.ScreenSpaceDrawQuad.BottomRight));
 
             Size = bottomRight - topLeft;
             Position = topLeft;
diff --git a/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSpanPlacementBlueprint.cs b/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSpanPlacementBlueprint.cs
index 6073dc791204..43cc60f6f8eb 100644
--- a/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSpanPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/Blueprints/TaikoSpanPlacementBlueprint.cs
@@ -11,8 +11,8 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
 {
diff --git a/osu.Game.Rulesets.Taiko/Edit/TaikoBlueprintContainer.cs b/osu.Game.Rulesets.Taiko/Edit/TaikoBlueprintContainer.cs
index f0c3eec04430..1ba9e049811c 100644
--- a/osu.Game.Rulesets.Taiko/Edit/TaikoBlueprintContainer.cs
+++ b/osu.Game.Rulesets.Taiko/Edit/TaikoBlueprintContainer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Taiko.Edit.Blueprints;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Edit
 {
diff --git a/osu.Game.Rulesets.Taiko/Mods/TaikoModFlashlight.cs b/osu.Game.Rulesets.Taiko/Mods/TaikoModFlashlight.cs
index 02c06850b744..ce314a7b96a0 100644
--- a/osu.Game.Rulesets.Taiko/Mods/TaikoModFlashlight.cs
+++ b/osu.Game.Rulesets.Taiko/Mods/TaikoModFlashlight.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Mods
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs
index 46259dadde53..c7956bfdcc84 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -17,8 +17,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -42,8 +41,8 @@ public partial class DrawableDrumRoll : DrawableTaikoStrongableHitObject<DrumRol
         private readonly Container tickContainer;
         private SkinnableDrawable headPiece;
 
-        private Color4 colourIdle;
-        private Color4 colourEngaged;
+        private Colour4 colourIdle;
+        private Colour4 colourEngaged;
 
         public override bool DisplayResult => false;
 
@@ -186,7 +185,7 @@ protected override void Update()
 
         private void updateColour(double fadeDuration = 0)
         {
-            Color4 newColour = Interpolation.ValueAt((float)rollingHits / rolling_hits_for_engaged_colour, colourIdle, colourEngaged, 0, 1);
+            Colour4 newColour = Interpolation.ValueAt((float)rollingHits / rolling_hits_for_engaged_colour, colourIdle, colourEngaged, 0, 1);
 
             if (fadeDuration == 0)
             {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRollTick.cs b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRollTick.cs
index 64d2020edc12..e8b9b156a5ac 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRollTick.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRollTick.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableHit.cs b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableHit.cs
index 1be530b596de..5f9c0fbd859c 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableHit.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableHit.cs
@@ -1,11 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
 
 using System;
 using System.Diagnostics;
-using System.Linq;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -17,7 +16,7 @@
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwell.cs b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwell.cs
index 5e122decdb20..16e3c46e1a74 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwell.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableSwell.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs
index 83148bb0505f..1730e107017e 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableTaikoHitObject.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -13,7 +13,7 @@
 using osu.Game.Audio;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs b/osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs
index f3143de3453e..11ab4469f073 100644
--- a/osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Threading;
@@ -9,7 +9,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Beatmaps;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Objects
 {
diff --git a/osu.Game.Rulesets.Taiko/Objects/Hit.cs b/osu.Game.Rulesets.Taiko/Objects/Hit.cs
index 156e89060793..96cd4f7ece8d 100644
--- a/osu.Game.Rulesets.Taiko/Objects/Hit.cs
+++ b/osu.Game.Rulesets.Taiko/Objects/Hit.cs
@@ -7,7 +7,7 @@
 using osu.Game.Audio;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Objects
 {
@@ -26,10 +26,10 @@ public HitType Type
             set => type.Value = value;
         }
 
-        public Bindable<Color4> DisplayColour { get; } = new Bindable<Color4>(COLOUR_CENTRE);
+        public Bindable<Colour4> DisplayColour { get; } = new Bindable<Colour4>(COLOUR_CENTRE);
 
-        public static readonly Color4 COLOUR_CENTRE = Color4Extensions.FromHex(@"bb1177");
-        public static readonly Color4 COLOUR_RIM = Color4Extensions.FromHex(@"2299bb");
+        public static readonly Colour4 COLOUR_CENTRE = Color4Extensions.FromHex(@"bb1177");
+        public static readonly Colour4 COLOUR_RIM = Color4Extensions.FromHex(@"2299bb");
 
         public Hit()
         {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonBarLine.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonBarLine.cs
index 6cb55f1111f9..c9c5c6aef20d 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonBarLine.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonBarLine.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCentreCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCentreCirclePiece.cs
index dedb276d58b9..f28b5282623b 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCentreCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCentreCirclePiece.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -16,8 +15,8 @@ public partial class ArgonCentreCirclePiece : ArgonCirclePiece
         private void load()
         {
             AccentColour = ColourInfo.GradientVertical(
-                new Color4(241, 0, 0, 255),
-                new Color4(167, 0, 0, 255)
+                new Colour4(241, 0, 0, 255),
+                new Colour4(167, 0, 0, 255)
             );
 
             AddInternal(new SpriteIcon
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCirclePiece.cs
index d94031380b99..417fd79b6340 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonCirclePiece.cs
@@ -11,7 +11,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -59,7 +58,7 @@ protected ArgonCirclePiece()
                 new Circle
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = new Color4(0, 0, 0, 190)
+                    Colour = new Colour4(0, 0, 0, 190)
                 },
                 ring = new RingPiece(20 / 70f),
                 ring2 = new RingPiece(5 / 70f),
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonElongatedCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonElongatedCirclePiece.cs
index 1ac2822a1bd3..7a22aa033d83 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonElongatedCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonElongatedCirclePiece.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -19,8 +18,8 @@ public ArgonElongatedCirclePiece()
         private void load()
         {
             AccentColour = ColourInfo.GradientVertical(
-                new Color4(241, 161, 0, 255),
-                new Color4(167, 111, 0, 255)
+                new Colour4(241, 161, 0, 255),
+                new Colour4(167, 111, 0, 255)
             );
         }
 
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitExplosion.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitExplosion.cs
index e2af3bf4df1c..d459454e415e 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitExplosion.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitExplosion.cs
@@ -8,8 +8,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -42,7 +41,7 @@ public ArgonHitExplosion(TaikoSkinComponents component)
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Size = new Vector2(0.85f),
                     Masking = true,
                 },
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitTarget.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitTarget.cs
index 0ddcd6feb247..93d0fd33216b 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitTarget.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonHitTarget.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -39,7 +38,7 @@ public ArgonHitTarget()
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Blending = BlendingParameters.Additive,
                     Alpha = 0.1f,
                     Size = new Vector2(TaikoHitObject.DEFAULT_SIZE),
@@ -51,7 +50,7 @@ public ArgonHitTarget()
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Blending = BlendingParameters.Additive,
                     Alpha = 0.1f,
                     Size = new Vector2(TaikoHitObject.DEFAULT_SIZE * 0.85f),
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonInputDrum.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonInputDrum.cs
index f22c7bf017c2..1c836547e7d5 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonInputDrum.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonInputDrum.cs
@@ -12,26 +12,25 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Screens.Ranking;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
     public partial class ArgonInputDrum : AspectContainer
     {
         public static readonly ColourInfo RIM_HIT_GRADIENT = ColourInfo.GradientHorizontal(
-            new Color4(227, 248, 255, 255),
-            new Color4(198, 245, 255, 255)
+            new Colour4(227, 248, 255, 255),
+            new Colour4(198, 245, 255, 255)
         );
 
-        public static readonly Colour4 RIM_HIT_GLOW = new Color4(126, 215, 253, 255);
+        public static readonly Colour4 RIM_HIT_GLOW = new Colour4(126, 215, 253, 255);
 
         public static readonly ColourInfo CENTRE_HIT_GRADIENT = ColourInfo.GradientHorizontal(
-            new Color4(255, 227, 236, 255),
-            new Color4(255, 198, 211, 255)
+            new Colour4(255, 227, 236, 255),
+            new Colour4(255, 198, 211, 255)
         );
 
-        public static readonly Colour4 CENTRE_HIT_GLOW = new Color4(255, 147, 199, 255);
+        public static readonly Colour4 CENTRE_HIT_GLOW = new Colour4(255, 147, 199, 255);
 
         private const float rim_size = 0.3f;
 
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonJudgementPiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonJudgementPiece.cs
index 724e387cc77c..81a47a0bb24a 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonJudgementPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonJudgementPiece.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -174,7 +173,7 @@ public RingPiece(float thickness = 9)
 
                     Masking = true;
                     BorderThickness = thickness;
-                    BorderColour = Color4.White;
+                    BorderColour = Colour4.White;
 
                     Child = new Box
                     {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundLeft.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundLeft.cs
index 07ac37b04cc0..62a8635ef7c0 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundLeft.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundLeft.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -18,7 +17,7 @@ public ArgonPlayfieldBackgroundLeft()
             {
                 new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both,
                 },
             };
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundRight.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundRight.cs
index 41a3e3bb3376..71e646c924d3 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundRight.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonPlayfieldBackgroundRight.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -18,7 +17,7 @@ public ArgonPlayfieldBackgroundRight()
             {
                 new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.7f,
                     RelativeSizeAxes = Axes.Both,
                 },
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonRimCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonRimCirclePiece.cs
index b32326a90f65..dcaf79365bc8 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonRimCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonRimCirclePiece.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -16,8 +15,8 @@ public partial class ArgonRimCirclePiece : ArgonCirclePiece
         private void load()
         {
             AccentColour = ColourInfo.GradientVertical(
-                new Color4(0, 161, 241, 255),
-                new Color4(0, 111, 167, 255)
+                new Colour4(0, 161, 241, 255),
+                new Colour4(0, 111, 167, 255)
             );
 
             AddInternal(new SpriteIcon
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonSwellCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonSwellCirclePiece.cs
index d93d8598f6f7..fc8533c72d2c 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonSwellCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonSwellCirclePiece.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -16,8 +15,8 @@ public partial class ArgonSwellCirclePiece : ArgonCirclePiece
         private void load()
         {
             AccentColour = ColourInfo.GradientVertical(
-                new Color4(240, 201, 0, 255),
-                new Color4(167, 139, 0, 255)
+                new Colour4(240, 201, 0, 255),
+                new Colour4(167, 139, 0, 255)
             );
 
             AddInternal(new SpriteIcon
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonTickPiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonTickPiece.cs
index 5baa320201c4..e17d218f27fb 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonTickPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/ArgonTickPiece.cs
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/RingPiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/RingPiece.cs
index 719c1c36fa19..afc1d992a785 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/RingPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/RingPiece.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
@@ -21,7 +20,7 @@ public RingPiece(float relativeBorderThickness)
             Origin = Anchor.Centre;
 
             Masking = true;
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
 
             Child = new Box
             {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Argon/TaikoArgonSkinTransformer.cs b/osu.Game.Rulesets.Taiko/Skinning/Argon/TaikoArgonSkinTransformer.cs
index 0236168a878c..f0d5033eb9fc 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Argon/TaikoArgonSkinTransformer.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Argon/TaikoArgonSkinTransformer.cs
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Argon
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/CentreHitCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/CentreHitCirclePiece.cs
index 4ed5c3d0dfa1..f7a5f94c4d14 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/CentreHitCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/CentreHitCirclePiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
index 2c1c3f8d06f8..26bea6eb145f 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/CirclePiece.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,7 +14,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
@@ -38,12 +36,12 @@ public abstract partial class CirclePiece : BeatSyncedContainer, IHasAccentColou
         [Resolved]
         private DrawableHitObject drawableHitObject { get; set; } = null!;
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
         /// <summary>
         /// The colour of the inner circle and outer glows.
         /// </summary>
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
@@ -106,8 +104,8 @@ protected CirclePiece()
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                             RelativeSizeAxes = Axes.Both,
-                            ColourLight = Color4.White,
-                            ColourDark = Color4.White.Darken(0.1f)
+                            ColourLight = Colour4.White,
+                            ColourDark = Colour4.White.Darken(0.1f)
                         }
                     }
                 },
@@ -118,7 +116,7 @@ protected CirclePiece()
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
                     BorderThickness = 8,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     Masking = true,
                     Children = new[]
                     {
@@ -127,7 +125,7 @@ protected CirclePiece()
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Blending = BlendingParameters.Additive,
                             Alpha = 0,
                             AlwaysPresent = true
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultBarLine.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultBarLine.cs
index 09965054e01e..1e284e84d5fd 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultBarLine.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultBarLine.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultHitExplosion.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultHitExplosion.cs
index 982bf27f6029..ba4c31eb4d7e 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultHitExplosion.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultHitExplosion.cs
@@ -10,8 +10,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.UI;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
@@ -34,7 +33,7 @@ private void load()
         {
             RelativeSizeAxes = Axes.Both;
 
-            BorderColour = Color4.White;
+            BorderColour = Colour4.White;
             BorderThickness = 1;
 
             Blending = BlendingParameters.Additive;
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultInputDrum.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultInputDrum.cs
index 3eb4f6b8a644..7a870c15d1c5 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultInputDrum.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultInputDrum.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Screens.Ranking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultKiaiHitExplosion.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultKiaiHitExplosion.cs
index 750fb505a07e..e1da6b801b98 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultKiaiHitExplosion.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultKiaiHitExplosion.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultSwell.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultSwell.cs
index ac72ba73b855..b8ee599a3be0 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultSwell.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/DefaultSwell.cs
@@ -1,9 +1,8 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,8 +12,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
@@ -90,7 +88,7 @@ public DefaultSwell()
                                 RelativeSizeAxes = Axes.Both,
                                 Masking = true,
                                 BorderThickness = target_ring_thin_border,
-                                BorderColour = Color4.White,
+                                BorderColour = Colour4.White,
                                 Children = new[]
                                 {
                                     new Box
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/RimHitCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/RimHitCirclePiece.cs
index 0920d58a3462..2fe75eae1b47 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/RimHitCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/RimHitCirclePiece.cs
@@ -6,8 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
@@ -38,7 +37,7 @@ public RimHitSymbolPiece()
                 Size = new Vector2(SYMBOL_SIZE);
 
                 BorderThickness = SYMBOL_BORDER;
-                BorderColour = Color4.White;
+                BorderColour = Colour4.White;
                 Masking = true;
                 Children = new[]
                 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/SwellCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/SwellCirclePiece.cs
index d40b518aa3c7..34ff4b365c8d 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/SwellCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/SwellCirclePiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/TaikoTrianglesSkinTransformer.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/TaikoTrianglesSkinTransformer.cs
index 1a73457c67e7..49a7246bb0b6 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/TaikoTrianglesSkinTransformer.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/TaikoTrianglesSkinTransformer.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Default/TickPiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Default/TickPiece.cs
index 8bd8d5f4b46d..1ceea2e1ed23 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Default/TickPiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Default/TickPiece.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Default
 {
@@ -44,7 +43,7 @@ public TickPiece()
                 RelativeSizeAxes = Axes.Both,
                 Masking = true,
                 BorderThickness = tick_border_width,
-                BorderColour = Color4.White,
+                BorderColour = Colour4.White,
                 Children = new[]
                 {
                     fillBox = new Box
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyBarLine.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyBarLine.cs
index 01100bfd6367..adc01537a344 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyBarLine.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyBarLine.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyCirclePiece.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyCirclePiece.cs
index 0a306bf2a5b2..6ce39146d74e 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyCirclePiece.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyCirclePiece.cs
@@ -15,8 +15,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
@@ -142,9 +141,9 @@ private void animateForegroundLayer(IFramedAnimation animation)
             animation.GotoFrame(animationFrame);
         }
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyDrumRoll.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyDrumRoll.cs
index 34339b185dbc..f2a515a6b682 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyDrumRoll.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyDrumRoll.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
@@ -70,9 +69,9 @@ protected override void LoadComplete()
             updateAccentColour();
         }
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyHit.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyHit.cs
index 87c9d72d229d..3366715aee9c 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyHit.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyHit.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Allocation;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
@@ -21,8 +21,8 @@ private void load()
         {
             AccentColour = LegacyColourCompatibility.DisallowZeroAlpha(
                 component == TaikoSkinComponents.CentreHit
-                    ? new Color4(235, 69, 44, 255)
-                    : new Color4(67, 142, 172, 255));
+                    ? new Colour4(235, 69, 44, 255)
+                    : new Colour4(67, 142, 172, 255));
         }
     }
 }
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyInputDrum.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyInputDrum.cs
index 838f17218624..d6246098c72a 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyInputDrum.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyInputDrum.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyKiaiGlow.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyKiaiGlow.cs
index 73de3e599806..62829624e7a1 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyKiaiGlow.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyKiaiGlow.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacySwell.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacySwell.cs
index 3a93bda04f23..ef3fcbdfc9c8 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacySwell.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacySwell.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyTaikoScroller.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyTaikoScroller.cs
index 7069c1b585df..c2a59d1f07a6 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyTaikoScroller.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyTaikoScroller.cs
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyHitTarget.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyHitTarget.cs
index 2a008d81d971..c1e17f494814 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyHitTarget.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyHitTarget.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyPlayfieldBackgroundRight.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyPlayfieldBackgroundRight.cs
index 85870d0fd63a..5d270574d4bf 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyPlayfieldBackgroundRight.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacyPlayfieldBackgroundRight.cs
@@ -9,7 +9,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacySkinTransformer.cs b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacySkinTransformer.cs
index a985bd362e4e..11652e0c8062 100644
--- a/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacySkinTransformer.cs
+++ b/osu.Game.Rulesets.Taiko/Skinning/Legacy/TaikoLegacySkinTransformer.cs
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/DrawableTaikoJudgement.cs b/osu.Game.Rulesets.Taiko/UI/DrawableTaikoJudgement.cs
index f91fe586f2b7..9f13294e7a9a 100644
--- a/osu.Game.Rulesets.Taiko/UI/DrawableTaikoJudgement.cs
+++ b/osu.Game.Rulesets.Taiko/UI/DrawableTaikoJudgement.cs
@@ -1,10 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 using DefaultJudgementPiece = osu.Game.Rulesets.Taiko.Skinning.Default.DefaultJudgementPiece;
 
 namespace osu.Game.Rulesets.Taiko.UI
diff --git a/osu.Game.Rulesets.Taiko/UI/DrawableTaikoRuleset.cs b/osu.Game.Rulesets.Taiko/UI/DrawableTaikoRuleset.cs
index 07cce2de3472..3bd60d844382 100644
--- a/osu.Game.Rulesets.Taiko/UI/DrawableTaikoRuleset.cs
+++ b/osu.Game.Rulesets.Taiko/UI/DrawableTaikoRuleset.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 #nullable disable
@@ -27,7 +27,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/DrumTouchInputArea.cs b/osu.Game.Rulesets.Taiko/UI/DrumTouchInputArea.cs
index e114a02e65ee..982a0ff60d12 100644
--- a/osu.Game.Rulesets.Taiko/UI/DrumTouchInputArea.cs
+++ b/osu.Game.Rulesets.Taiko/UI/DrumTouchInputArea.cs
@@ -14,8 +14,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Taiko.Configuration;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
@@ -302,7 +301,7 @@ private void updateColoursFromAction()
                 overlay.Colour = colour;
             }
 
-            private Color4 getColourFromTaikoAction(TaikoAction handledAction)
+            private Colour4 getColourFromTaikoAction(TaikoAction handledAction)
             {
                 switch (handledAction)
                 {
diff --git a/osu.Game.Rulesets.Taiko/UI/HitExplosion.cs b/osu.Game.Rulesets.Taiko/UI/HitExplosion.cs
index a9820b14239a..0a19aef78e55 100644
--- a/osu.Game.Rulesets.Taiko/UI/HitExplosion.cs
+++ b/osu.Game.Rulesets.Taiko/UI/HitExplosion.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/KiaiHitExplosion.cs b/osu.Game.Rulesets.Taiko/UI/KiaiHitExplosion.cs
index 6c1e981a9709..8ae0ab498f69 100644
--- a/osu.Game.Rulesets.Taiko/UI/KiaiHitExplosion.cs
+++ b/osu.Game.Rulesets.Taiko/UI/KiaiHitExplosion.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundLeft.cs b/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundLeft.cs
index f676d051eb87..935133a4ac84 100644
--- a/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundLeft.cs
+++ b/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundLeft.cs
@@ -2,12 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
@@ -29,7 +27,7 @@ private void load(OsuColour colours)
                     Anchor = Anchor.TopRight,
                     RelativeSizeAxes = Axes.Y,
                     Width = 10,
-                    Colour = Framework.Graphics.Colour.ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.6f), Color4.Black.Opacity(0)),
+                    Colour = Framework.Graphics.Colour.ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.6f), Colour4.Black.Opacity(0)),
                 },
             };
         }
diff --git a/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundRight.cs b/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundRight.cs
index 7b2dbc5f5ac0..420a8af8d234 100644
--- a/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundRight.cs
+++ b/osu.Game.Rulesets.Taiko/UI/PlayfieldBackgroundRight.cs
@@ -2,13 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
@@ -25,7 +23,7 @@ private void load(OsuColour colours)
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.2f),
+                Colour = Colour4.Black.Opacity(0.2f),
                 Radius = 5,
             };
 
diff --git a/osu.Game.Rulesets.Taiko/UI/TaikoHitTarget.cs b/osu.Game.Rulesets.Taiko/UI/TaikoHitTarget.cs
index f88cffa9d625..6150650e41c6 100644
--- a/osu.Game.Rulesets.Taiko/UI/TaikoHitTarget.cs
+++ b/osu.Game.Rulesets.Taiko/UI/TaikoHitTarget.cs
@@ -1,12 +1,11 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Taiko.Objects;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
@@ -43,7 +42,7 @@ public TaikoHitTarget()
                     RelativeSizeAxes = Axes.Both,
                     Size = new Vector2(TaikoStrongableHitObject.DEFAULT_STRONG_SIZE),
                     Masking = true,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     BorderThickness = border_thickness,
                     Alpha = 0.1f,
                     Children = new[]
@@ -64,7 +63,7 @@ public TaikoHitTarget()
                     RelativeSizeAxes = Axes.Both,
                     Size = new Vector2(TaikoHitObject.DEFAULT_SIZE),
                     Masking = true,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     BorderThickness = border_thickness,
                     Alpha = 0.5f,
                     Children = new[]
diff --git a/osu.Game.Rulesets.Taiko/UI/TaikoMascotAnimation.cs b/osu.Game.Rulesets.Taiko/UI/TaikoMascotAnimation.cs
index 90f7782aba26..5b86306794cb 100644
--- a/osu.Game.Rulesets.Taiko/UI/TaikoMascotAnimation.cs
+++ b/osu.Game.Rulesets.Taiko/UI/TaikoMascotAnimation.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -10,7 +10,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/TaikoPlayfieldAdjustmentContainer.cs b/osu.Game.Rulesets.Taiko/UI/TaikoPlayfieldAdjustmentContainer.cs
index 7dcbd4c49f4d..c365acf8e7ba 100644
--- a/osu.Game.Rulesets.Taiko/UI/TaikoPlayfieldAdjustmentContainer.cs
+++ b/osu.Game.Rulesets.Taiko/UI/TaikoPlayfieldAdjustmentContainer.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Taiko.Beatmaps;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Rulesets.Taiko/UI/TaikoReplayRecorder.cs b/osu.Game.Rulesets.Taiko/UI/TaikoReplayRecorder.cs
index 57ff3b59d5a7..7c9decc00266 100644
--- a/osu.Game.Rulesets.Taiko/UI/TaikoReplayRecorder.cs
+++ b/osu.Game.Rulesets.Taiko/UI/TaikoReplayRecorder.cs
@@ -6,7 +6,7 @@
 using osu.Game.Rulesets.Taiko.Replays;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Taiko.UI
 {
diff --git a/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs b/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs
index 1b66a2ecbd17..5e4dbdc05fc8 100644
--- a/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs
@@ -5,6 +5,7 @@
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Game.Audio;
@@ -25,8 +26,7 @@
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Skinning;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Beatmaps.Formats
 {
@@ -387,15 +387,15 @@ public void TestDecodeBeatmapColours()
 
                 Debug.Assert(comboColors != null);
 
-                Color4[] expectedColors =
+                Colour4[] expectedColors =
                 {
-                    new Color4(142, 199, 255, 255),
-                    new Color4(255, 128, 128, 255),
-                    new Color4(128, 255, 255, 255),
-                    new Color4(128, 255, 128, 255),
-                    new Color4(255, 187, 255, 255),
-                    new Color4(255, 177, 140, 255),
-                    new Color4(100, 100, 100, 255), // alpha is specified as 100, but should be ignored.
+                    new Colour4(142, 199, 255, 255),
+                    new Colour4(255, 128, 128, 255),
+                    new Colour4(128, 255, 255, 255),
+                    new Colour4(128, 255, 128, 255),
+                    new Colour4(255, 187, 255, 255),
+                    new Colour4(255, 177, 140, 255),
+                    new Colour4(100, 100, 100, 255), // alpha is specified as 100, but should be ignored.
                 };
                 ClassicAssert.AreEqual(expectedColors.Length, comboColors.Count);
                 for (int i = 0; i < expectedColors.Length; i++)
@@ -415,16 +415,16 @@ public void TestComboColourCountIsLimitedToEight()
 
                 Debug.Assert(comboColors != null);
 
-                Color4[] expectedColors =
+                Colour4[] expectedColors =
                 {
-                    new Color4(142, 199, 255, 255),
-                    new Color4(255, 128, 128, 255),
-                    new Color4(128, 255, 255, 255),
-                    new Color4(128, 255, 128, 255),
-                    new Color4(255, 187, 255, 255),
-                    new Color4(255, 177, 140, 255),
-                    new Color4(100, 100, 100, 255),
-                    new Color4(142, 199, 255, 255),
+                    new Colour4(142, 199, 255, 255),
+                    new Colour4(255, 128, 128, 255),
+                    new Colour4(128, 255, 255, 255),
+                    new Colour4(128, 255, 128, 255),
+                    new Colour4(255, 187, 255, 255),
+                    new Colour4(255, 177, 140, 255),
+                    new Colour4(100, 100, 100, 255),
+                    new Colour4(142, 199, 255, 255),
                 };
                 ClassicAssert.AreEqual(expectedColors.Length, comboColors.Count);
                 for (int i = 0; i < expectedColors.Length; i++)
@@ -710,7 +710,7 @@ public void TestInvalidEventStillPasses()
             using (var badResStream = TestResources.OpenResource("invalid-events.osu"))
             using (var badStream = new LineBufferedReader(badResStream))
             {
-                Assert.DoesNotThrow(() => decoder.Decode(badStream));
+                decoder.Decode(badStream);
             }
         }
 
@@ -749,15 +749,12 @@ static void assertObjectHasBanks(HitObject hitObject, string normalBank, string?
         [Test]
         public void TestFallbackDecoderForCorruptedHeader()
         {
-            Decoder<Beatmap> decoder = null!;
-            Beatmap beatmap = null!;
-
             using (var resStream = TestResources.OpenResource("corrupted-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
-                Assert.DoesNotThrow(() => beatmap = decoder.Decode(stream));
+                var beatmap = decoder.Decode(stream);
                 ClassicAssert.NotNull(beatmap);
                 ClassicAssert.AreEqual("Beatmap with corrupted header", beatmap.Metadata.Title);
                 ClassicAssert.AreEqual("Evil Hacker", beatmap.Metadata.Author.Username);
@@ -767,15 +764,12 @@ public void TestFallbackDecoderForCorruptedHeader()
         [Test]
         public void TestFallbackDecoderForMissingHeader()
         {
-            Decoder<Beatmap> decoder = null!;
-            Beatmap beatmap = null!;
-
             using (var resStream = TestResources.OpenResource("missing-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
-                Assert.DoesNotThrow(() => beatmap = decoder.Decode(stream));
+                var beatmap = decoder.Decode(stream);
                 ClassicAssert.NotNull(beatmap);
                 ClassicAssert.AreEqual("Beatmap with no header", beatmap.Metadata.Title);
                 ClassicAssert.AreEqual("Incredibly Evil Hacker", beatmap.Metadata.Author.Username);
@@ -785,15 +779,12 @@ public void TestFallbackDecoderForMissingHeader()
         [Test]
         public void TestDecodeFileWithEmptyLinesAtStart()
         {
-            Decoder<Beatmap> decoder = null!;
-            Beatmap beatmap = null!;
-
             using (var resStream = TestResources.OpenResource("empty-lines-at-start.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
-                Assert.DoesNotThrow(() => beatmap = decoder.Decode(stream));
+                var beatmap = decoder.Decode(stream);
                 ClassicAssert.NotNull(beatmap);
                 ClassicAssert.AreEqual("Empty lines at start", beatmap.Metadata.Title);
                 ClassicAssert.AreEqual("Edge Case Hunter", beatmap.Metadata.Author.Username);
@@ -803,15 +794,12 @@ public void TestDecodeFileWithEmptyLinesAtStart()
         [Test]
         public void TestDecodeFileWithEmptyLinesAndNoHeader()
         {
-            Decoder<Beatmap> decoder = null!;
-            Beatmap beatmap = null!;
-
             using (var resStream = TestResources.OpenResource("empty-line-instead-of-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
-                Assert.DoesNotThrow(() => beatmap = decoder.Decode(stream));
+                var beatmap = decoder.Decode(stream);
                 ClassicAssert.NotNull(beatmap);
                 ClassicAssert.AreEqual("The dog ate the file header", beatmap.Metadata.Title);
                 ClassicAssert.AreEqual("Why does this keep happening", beatmap.Metadata.Author.Username);
@@ -821,15 +809,12 @@ public void TestDecodeFileWithEmptyLinesAndNoHeader()
         [Test]
         public void TestDecodeFileWithContentImmediatelyAfterHeader()
         {
-            Decoder<Beatmap> decoder = null!;
-            Beatmap beatmap = null!;
-
             using (var resStream = TestResources.OpenResource("no-empty-line-after-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
-                Assert.DoesNotThrow(() => beatmap = decoder.Decode(stream));
+                var beatmap = decoder.Decode(stream);
                 ClassicAssert.NotNull(beatmap);
                 ClassicAssert.AreEqual("No empty line delimiting header from contents", beatmap.Metadata.Title);
                 ClassicAssert.AreEqual("Edge Case Hunter", beatmap.Metadata.Author.Username);
@@ -839,22 +824,23 @@ public void TestDecodeFileWithContentImmediatelyAfterHeader()
         [Test]
         public void TestDecodeEmptyFile()
         {
-            using (var resStream = new MemoryStream())
-            using (var stream = new LineBufferedReader(resStream))
+            Assert.Throws<IOException>(() =>
             {
-                Assert.Throws<IOException>(() => Decoder.GetDecoder<Beatmap>(stream));
-            }
+                using var resStream = new MemoryStream();
+                using var stream = new LineBufferedReader(resStream);
+                Decoder.GetDecoder<Beatmap>(stream);
+            });
         }
 
         [Test]
         public void TestAllowFallbackDecoderOverwrite()
         {
-            Decoder<Beatmap> decoder = null!;
+            Decoder<Beatmap> decoder;
 
             using (var resStream = TestResources.OpenResource("corrupted-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyBeatmapDecoder>(decoder);
             }
 
@@ -863,7 +849,7 @@ public void TestAllowFallbackDecoderOverwrite()
             using (var resStream = TestResources.OpenResource("corrupted-header.osu"))
             using (var stream = new LineBufferedReader(resStream))
             {
-                Assert.DoesNotThrow(() => decoder = Decoder.GetDecoder<Beatmap>(stream));
+                decoder = Decoder.GetDecoder<Beatmap>(stream);
                 ClassicAssert.IsInstanceOf<LegacyDifficultyCalculatorBeatmapDecoder>(decoder);
             }
         }
diff --git a/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapEncoderTest.cs b/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapEncoderTest.cs
index 3e2bcd7b43cb..c58c408aceaf 100644
--- a/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapEncoderTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapEncoderTest.cs
@@ -7,6 +7,7 @@
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Framework.Audio.Track;
@@ -29,8 +30,7 @@
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Beatmaps.Formats
 {
@@ -198,15 +198,15 @@ public void TestOnlyEightComboColoursEncoded()
                 {
                     CustomComboColours =
                     {
-                        new Color4(1, 1, 1, 255),
-                        new Color4(2, 2, 2, 255),
-                        new Color4(3, 3, 3, 255),
-                        new Color4(4, 4, 4, 255),
-                        new Color4(5, 5, 5, 255),
-                        new Color4(6, 6, 6, 255),
-                        new Color4(7, 7, 7, 255),
-                        new Color4(8, 8, 8, 255),
-                        new Color4(9, 9, 9, 255),
+                        new Colour4(1, 1, 1, 255),
+                        new Colour4(2, 2, 2, 255),
+                        new Colour4(3, 3, 3, 255),
+                        new Colour4(4, 4, 4, 255),
+                        new Colour4(5, 5, 5, 255),
+                        new Colour4(6, 6, 6, 255),
+                        new Colour4(7, 7, 7, 255),
+                        new Colour4(8, 8, 8, 255),
+                        new Colour4(9, 9, 9, 255),
                     }
                 }
             };
diff --git a/osu.Game.Tests/Beatmaps/Formats/LegacyScoreDecoderTest.cs b/osu.Game.Tests/Beatmaps/Formats/LegacyScoreDecoderTest.cs
index 1292d25d6ace..a7e736dc70b9 100644
--- a/osu.Game.Tests/Beatmaps/Formats/LegacyScoreDecoderTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/LegacyScoreDecoderTest.cs
@@ -8,6 +8,7 @@
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Framework.Extensions;
@@ -35,7 +36,6 @@
 using osu.Game.Scoring.Legacy;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Beatmaps.Formats
 {
diff --git a/osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs b/osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs
index 2b808f1f1c09..c35e01e9c038 100644
--- a/osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Framework.Graphics;
@@ -9,7 +10,6 @@
 using osu.Game.IO;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Beatmaps.Formats
 {
diff --git a/osu.Game.Tests/Beatmaps/Formats/OsuJsonDecoderTest.cs b/osu.Game.Tests/Beatmaps/Formats/OsuJsonDecoderTest.cs
index c0c330dba5b9..bf3bb7c59687 100644
--- a/osu.Game.Tests/Beatmaps/Formats/OsuJsonDecoderTest.cs
+++ b/osu.Game.Tests/Beatmaps/Formats/OsuJsonDecoderTest.cs
@@ -5,6 +5,7 @@
 
 using System.IO;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Game.Audio;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Beatmaps.Formats
 {
diff --git a/osu.Game.Tests/Editing/Checks/CheckAudioQualityTest.cs b/osu.Game.Tests/Editing/Checks/CheckAudioQualityTest.cs
index c2a712b5806c..3ed9201916db 100644
--- a/osu.Game.Tests/Editing/Checks/CheckAudioQualityTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckAudioQualityTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Linq;
 using ManagedBass;
 using Moq;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual;
-using osuTK.Audio;
 
 namespace osu.Game.Tests.Editing.Checks
 {
@@ -37,7 +37,7 @@ public void Setup()
 
             // 0 = No output device. This still allows decoding.
             if (!Bass.Init(0) && Bass.LastError != Errors.Already)
-                throw new AudioException("Could not initialize Bass.");
+                throw new InvalidOperationException("Could not initialize Bass.");
         }
 
         [Test]
diff --git a/osu.Game.Tests/Editing/Checks/CheckDelayedHitsoundsTest.cs b/osu.Game.Tests/Editing/Checks/CheckDelayedHitsoundsTest.cs
index 1cc89587a210..1ea85dbfc21b 100644
--- a/osu.Game.Tests/Editing/Checks/CheckDelayedHitsoundsTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckDelayedHitsoundsTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.IO;
 using System.Linq;
 using ManagedBass;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK.Audio;
 
 namespace osu.Game.Tests.Editing.Checks
 {
@@ -43,7 +43,7 @@ public void SetUp()
             };
 
             if (!Bass.Init(0) && Bass.LastError != Errors.Already)
-                throw new AudioException("Could not initialize Bass.");
+                throw new InvalidOperationException("Could not initialize Bass.");
         }
 
         [Test]
diff --git a/osu.Game.Tests/Editing/Checks/CheckHitsoundsFormatTest.cs b/osu.Game.Tests/Editing/Checks/CheckHitsoundsFormatTest.cs
index 0a6e0455926d..ff9172fabdce 100644
--- a/osu.Game.Tests/Editing/Checks/CheckHitsoundsFormatTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckHitsoundsFormatTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.IO;
 using System.Linq;
 using ManagedBass;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK.Audio;
 
 namespace osu.Game.Tests.Editing.Checks
 {
@@ -40,7 +40,7 @@ public void Setup()
 
             // 0 = No output device. This still allows decoding.
             if (!Bass.Init(0) && Bass.LastError != Errors.Already)
-                throw new AudioException("Could not initialize Bass.");
+                throw new InvalidOperationException("Could not initialize Bass.");
         }
 
         [Test]
diff --git a/osu.Game.Tests/Editing/Checks/CheckInconsistentSettingsTest.cs b/osu.Game.Tests/Editing/Checks/CheckInconsistentSettingsTest.cs
index 9ae733693ace..f0833e5a0bc8 100644
--- a/osu.Game.Tests/Editing/Checks/CheckInconsistentSettingsTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckInconsistentSettingsTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets.Edit.Checks;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Editing.Checks
 {
diff --git a/osu.Game.Tests/Editing/Checks/CheckSongFormatTest.cs b/osu.Game.Tests/Editing/Checks/CheckSongFormatTest.cs
index aab634a47f8f..02095cc2bb8c 100644
--- a/osu.Game.Tests/Editing/Checks/CheckSongFormatTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckSongFormatTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.IO;
 using System.Linq;
 using ManagedBass;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK.Audio;
 
 namespace osu.Game.Tests.Editing.Checks
 {
@@ -40,7 +40,7 @@ public void Setup()
 
             // 0 = No output device. This still allows decoding.
             if (!Bass.Init(0) && Bass.LastError != Errors.Already)
-                throw new AudioException("Could not initialize Bass.");
+                throw new InvalidOperationException("Could not initialize Bass.");
         }
 
         [Test]
diff --git a/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs b/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
index 5ff786825b17..a5759f03f2b4 100644
--- a/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK.Audio;
 
 namespace osu.Game.Tests.Editing.Checks
 {
@@ -41,7 +41,7 @@ public void Setup()
 
             // 0 = No output device. This still allows decoding.
             if (!Bass.Init(0) && Bass.LastError != Errors.Already)
-                throw new AudioException("Could not initialize Bass.");
+                throw new InvalidOperationException("Could not initialize Bass.");
         }
 
         [Test]
diff --git a/osu.Game.Tests/Editing/Checks/CheckUnusedAudioAtEndTest.cs b/osu.Game.Tests/Editing/Checks/CheckUnusedAudioAtEndTest.cs
index bf996b06ea83..44dbb7c7b601 100644
--- a/osu.Game.Tests/Editing/Checks/CheckUnusedAudioAtEndTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckUnusedAudioAtEndTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using Moq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Storyboards;
-using osuTK;
 using static osu.Game.Tests.Visual.OsuTestScene.ClockBackedTestWorkingBeatmap;
 
 namespace osu.Game.Tests.Editing.Checks
diff --git a/osu.Game.Tests/Editing/Checks/CheckZeroLengthObjectsTest.cs b/osu.Game.Tests/Editing/Checks/CheckZeroLengthObjectsTest.cs
index 648f02839f49..7941e7c18bc9 100644
--- a/osu.Game.Tests/Editing/Checks/CheckZeroLengthObjectsTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckZeroLengthObjectsTest.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Moq;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Editing.Checks
 {
diff --git a/osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs b/osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs
index 21d8a165fffd..cc4a55c33379 100644
--- a/osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs
+++ b/osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs
@@ -5,6 +5,7 @@
 
 using System.IO;
 using System.Text;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
-using osuTK;
 using Decoder = osu.Game.Beatmaps.Formats.Decoder;
 
 namespace osu.Game.Tests.Editing
diff --git a/osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs b/osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs
index c081671a48ca..7d0b5169091a 100644
--- a/osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs
+++ b/osu.Game.Tests/Editing/TestSceneHitObjectComposerDistanceSnapping.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
-using osuTK;
 
 namespace osu.Game.Tests.Editing
 {
diff --git a/osu.Game.Tests/Gameplay/TestSceneHitObjectAccentColour.cs b/osu.Game.Tests/Gameplay/TestSceneHitObjectAccentColour.cs
index acb14f86fc3c..5c79fa9532a7 100644
--- a/osu.Game.Tests/Gameplay/TestSceneHitObjectAccentColour.cs
+++ b/osu.Game.Tests/Gameplay/TestSceneHitObjectAccentColour.cs
@@ -20,7 +20,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Gameplay
 {
@@ -55,7 +54,7 @@ public void TestChangeComboIndexBeforeLoad()
                 skinContainer.Add(hitObject);
             });
 
-            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Color4.Green);
+            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Colour4.Green);
         }
 
         [Test]
@@ -69,7 +68,7 @@ public void TestChangeComboIndexDuringLoad()
                 hitObject.HitObject.ComboIndex = 1;
             });
 
-            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Color4.Green);
+            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Colour4.Green);
         }
 
         [Test]
@@ -78,10 +77,10 @@ public void TestChangeComboIndexAfterLoad()
             TestDrawableHitObject hitObject = null;
 
             AddStep("add hitobject", () => skinContainer.Add(hitObject = new TestDrawableHitObject()));
-            AddAssert("combo colour is red", () => hitObject.AccentColour.Value == Color4.Red);
+            AddAssert("combo colour is red", () => hitObject.AccentColour.Value == Colour4.Red);
 
             AddStep("change combo", () => hitObject.HitObject.ComboIndex = 1);
-            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Color4.Green);
+            AddAssert("combo colour is green", () => hitObject.AccentColour.Value == Colour4.Green);
         }
 
         private partial class TestDrawableHitObject : DrawableHitObject<TestHitObjectWithCombo>
@@ -129,10 +128,10 @@ public bool LastInCombo
 
         private class TestSkin : ISkin
         {
-            public readonly List<Color4> ComboColours = new List<Color4>
+            public readonly List<Colour4> ComboColours = new List<Colour4>
             {
-                Color4.Red,
-                Color4.Green
+                Colour4.Red,
+                Colour4.Green
             };
 
             public Drawable GetDrawableComponent(ISkinComponentLookup lookup) => throw new NotImplementedException();
@@ -146,7 +145,7 @@ public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
                 switch (lookup)
                 {
                     case SkinComboColourLookup comboColour:
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(ComboColours[comboColour.ColourIndex % ComboColours.Count]));
+                        return SkinUtils.As<TValue>(new Bindable<Colour4>(ComboColours[comboColour.ColourIndex % ComboColours.Count]));
                 }
 
                 throw new NotImplementedException();
diff --git a/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs b/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
index ce31a9ea9d75..4d6daf2ed416 100644
--- a/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
+++ b/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Input.Bindings;
 using osu.Game.Input;
 using osu.Game.Input.Bindings;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Input
 {
diff --git a/osu.Game.Tests/Input/RealmKeyBindingTest.cs b/osu.Game.Tests/Input/RealmKeyBindingTest.cs
index 366d5ea825cb..30d9c06d4fa2 100644
--- a/osu.Game.Tests/Input/RealmKeyBindingTest.cs
+++ b/osu.Game.Tests/Input/RealmKeyBindingTest.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Tests.Visual;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Input
 {
diff --git a/osu.Game.Tests/Skins/LegacyManiaSkinDecoderTest.cs b/osu.Game.Tests/Skins/LegacyManiaSkinDecoderTest.cs
index d577e0fedfc5..b613976206d3 100644
--- a/osu.Game.Tests/Skins/LegacyManiaSkinDecoderTest.cs
+++ b/osu.Game.Tests/Skins/LegacyManiaSkinDecoderTest.cs
@@ -5,7 +5,7 @@
 using osu.Game.IO;
 using osu.Game.Skinning;
 using osu.Game.Tests.Resources;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Skins
 {
@@ -96,7 +96,7 @@ public void TestParseColours()
                 var configs = decoder.Decode(stream);
 
                 Assert.That(configs.Count, Is.EqualTo(1));
-                Assert.That(configs[0].CustomColours, Contains.Key("ColourBarline").And.ContainValue(new Color4(50, 50, 50, 50)));
+                Assert.That(configs[0].CustomColours, Contains.Key("ColourBarline").And.ContainValue(new Colour4(50, 50, 50, 50)));
             }
         }
 
diff --git a/osu.Game.Tests/Skins/LegacySkinDecoderTest.cs b/osu.Game.Tests/Skins/LegacySkinDecoderTest.cs
index 4bf685fc9fc4..4e7e4d230107 100644
--- a/osu.Game.Tests/Skins/LegacySkinDecoderTest.cs
+++ b/osu.Game.Tests/Skins/LegacySkinDecoderTest.cs
@@ -9,7 +9,7 @@
 using osu.Game.IO;
 using osu.Game.Skinning;
 using osu.Game.Tests.Resources;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Skins
 {
@@ -25,12 +25,12 @@ public void TestDecodeSkinColours()
             using (var stream = new LineBufferedReader(resStream))
             {
                 var comboColors = decoder.Decode(stream).ComboColours;
-                var expectedColors = new List<Color4>
+                var expectedColors = new List<Colour4>
                 {
-                    new Color4(142, 199, 255, 255),
-                    new Color4(255, 128, 128, 255),
-                    new Color4(128, 255, 255, 255),
-                    new Color4(100, 100, 100, 255), // alpha is specified as 100, but should be ignored.
+                    new Colour4(142, 199, 255, 255),
+                    new Colour4(255, 128, 128, 255),
+                    new Colour4(128, 255, 255, 255),
+                    new Colour4(100, 100, 100, 255), // alpha is specified as 100, but should be ignored.
                 };
 
                 ClassicAssert.AreEqual(expectedColors.Count, comboColors?.Count);
diff --git a/osu.Game.Tests/Skins/TestSceneSkinConfigurationLookup.cs b/osu.Game.Tests/Skins/TestSceneSkinConfigurationLookup.cs
index 816834989cc7..0ca09a15444e 100644
--- a/osu.Game.Tests/Skins/TestSceneSkinConfigurationLookup.cs
+++ b/osu.Game.Tests/Skins/TestSceneSkinConfigurationLookup.cs
@@ -21,7 +21,6 @@
 using osu.Game.Skinning;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Skins
 {
@@ -97,20 +96,20 @@ public void TestLookupNull()
         [Test]
         public void TestColourLookup()
         {
-            AddStep("Add config colour", () => userSource.Configuration.CustomColours["Lookup"] = Color4.Red);
-            AddAssert("Check colour lookup", () => requester.GetConfig<SkinCustomColourLookup, Color4>(new SkinCustomColourLookup("Lookup"))?.Value == Color4.Red);
+            AddStep("Add config colour", () => userSource.Configuration.CustomColours["Lookup"] = Colour4.Red);
+            AddAssert("Check colour lookup", () => requester.GetConfig<SkinCustomColourLookup, Colour4>(new SkinCustomColourLookup("Lookup"))?.Value == Colour4.Red);
         }
 
         [Test]
         public void TestGlobalLookup()
         {
-            AddAssert("Check combo colours", () => requester.GetConfig<GlobalSkinColours, IReadOnlyList<Color4>>(GlobalSkinColours.ComboColours)?.Value?.Count > 0);
+            AddAssert("Check combo colours", () => requester.GetConfig<GlobalSkinColours, IReadOnlyList<Colour4>>(GlobalSkinColours.ComboColours)?.Value?.Count > 0);
         }
 
         [Test]
         public void TestWrongColourType()
         {
-            AddStep("Add config colour", () => userSource.Configuration.CustomColours["Lookup"] = Color4.Red);
+            AddStep("Add config colour", () => userSource.Configuration.CustomColours["Lookup"] = Colour4.Red);
 
             AddAssert("perform incorrect lookup", () =>
             {
@@ -130,24 +129,24 @@ public void TestWrongColourType()
         public void TestEmptyComboColours()
         {
             AddAssert("Check retrieved combo colours is skin default colours", () =>
-                requester.GetConfig<GlobalSkinColours, IReadOnlyList<Color4>>(GlobalSkinColours.ComboColours)?.Value?.SequenceEqual(SkinConfiguration.DefaultComboColours) ?? false);
+                requester.GetConfig<GlobalSkinColours, IReadOnlyList<Colour4>>(GlobalSkinColours.ComboColours)?.Value?.SequenceEqual(SkinConfiguration.DefaultComboColours) ?? false);
         }
 
         [Test]
         public void TestEmptyComboColoursNoFallback()
         {
-            AddStep("Add custom combo colours to user skin", () => userSource.Configuration.CustomComboColours = new List<Color4>
+            AddStep("Add custom combo colours to user skin", () => userSource.Configuration.CustomComboColours = new List<Colour4>
             {
-                new Color4(100, 150, 200, 255),
-                new Color4(55, 110, 166, 255),
-                new Color4(75, 125, 175, 255)
+                new Colour4(100, 150, 200, 255),
+                new Colour4(55, 110, 166, 255),
+                new Colour4(75, 125, 175, 255)
             });
 
             AddStep("Disallow default colours fallback in beatmap skin", () => beatmapSource.Configuration.AllowDefaultComboColoursFallback = false);
 
             AddAssert("Check retrieved combo colours from user skin", () =>
                 userSource.Configuration.ComboColours != null &&
-                (requester.GetConfig<GlobalSkinColours, IReadOnlyList<Color4>>(GlobalSkinColours.ComboColours)?.Value?.SequenceEqual(userSource.Configuration.ComboColours) ?? false));
+                (requester.GetConfig<GlobalSkinColours, IReadOnlyList<Colour4>>(GlobalSkinColours.ComboColours)?.Value?.SequenceEqual(userSource.Configuration.ComboColours) ?? false));
         }
 
         [Test]
diff --git a/osu.Game.Tests/Skins/TestSceneSkinResources.cs b/osu.Game.Tests/Skins/TestSceneSkinResources.cs
index 17e9c9b65411..7f08889f95f2 100644
--- a/osu.Game.Tests/Skins/TestSceneSkinResources.cs
+++ b/osu.Game.Tests/Skins/TestSceneSkinResources.cs
@@ -77,11 +77,16 @@ public void TestSampleRetrievalOrder()
 
             AddAssert("sample lookups were in correct order", () =>
             {
+                // OptimizedResourceStore.AudioFallbackRules redirects .wav/.mp3 to try .ogg first (better compression).
+                // The actual lookup order is: no-ext, ogg (wav fallback), wav, ogg (mp3 fallback), mp3, ogg (direct).
                 string[] lookups = lookedUpFileNames.Where(f => f.StartsWith(TestSkin.SAMPLE_NAME, StringComparison.Ordinal)).ToArray();
-                return Path.GetExtension(lookups[0]) == string.Empty
-                       && Path.GetExtension(lookups[1]) == ".wav"
-                       && Path.GetExtension(lookups[2]) == ".mp3"
-                       && Path.GetExtension(lookups[3]) == ".ogg";
+                return lookups.Length >= 6
+                       && Path.GetExtension(lookups[0]) == string.Empty
+                       && Path.GetExtension(lookups[1]) == ".ogg"
+                       && Path.GetExtension(lookups[2]) == ".wav"
+                       && Path.GetExtension(lookups[3]) == ".ogg"
+                       && Path.GetExtension(lookups[4]) == ".mp3"
+                       && Path.GetExtension(lookups[5]) == ".ogg";
             });
         }
 
diff --git a/osu.Game.Tests/Utils/GeometryUtilsTest.cs b/osu.Game.Tests/Utils/GeometryUtilsTest.cs
index f73175bb5ba5..a21635281cb8 100644
--- a/osu.Game.Tests/Utils/GeometryUtilsTest.cs
+++ b/osu.Game.Tests/Utils/GeometryUtilsTest.cs
@@ -1,9 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Utils;
-using osuTK;
 
 namespace osu.Game.Tests.Utils
 {
diff --git a/osu.Game.Tests/Visual/Background/TestSceneTriangleBorderShader.cs b/osu.Game.Tests/Visual/Background/TestSceneTriangleBorderShader.cs
index d84c4fb690ad..f5a4a2b14661 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneTriangleBorderShader.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneTriangleBorderShader.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Rendering;
@@ -8,8 +9,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Background
 {
@@ -24,7 +23,7 @@ public TestSceneTriangleBorderShader()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.DarkGreen
+                    Colour = Colour4.DarkGreen
                 },
                 triangle = new TestTriangle
                 {
diff --git a/osu.Game.Tests/Visual/Background/TestSceneTrianglesBackground.cs b/osu.Game.Tests/Visual/Background/TestSceneTrianglesBackground.cs
index bac08239ea06..de2579c61348 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneTrianglesBackground.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneTrianglesBackground.cs
@@ -1,11 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Background
 {
@@ -20,13 +19,13 @@ public TestSceneTrianglesBackground()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black
+                    Colour = Colour4.Black
                 },
                 triangles = new Triangles
                 {
                     RelativeSizeAxes = Axes.Both,
-                    ColourLight = Color4.White,
-                    ColourDark = Color4.Gray,
+                    ColourLight = Colour4.White,
+                    ColourDark = Colour4.Gray,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Size = new Vector2(0.9f),
diff --git a/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs b/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
index 6101ad8c2524..48de19220ef2 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
@@ -1,14 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Background
 {
@@ -25,7 +24,7 @@ public TestSceneTrianglesV2Background()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Gray
+                    Colour = Colour4.Gray
                 },
                 new FillFlowContainer
                 {
@@ -54,7 +53,7 @@ public TestSceneTrianglesV2Background()
                                 new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.Red
+                                    Colour = Colour4.Red
                                 },
                                 triangles = new TrianglesV2
                                 {
@@ -80,7 +79,7 @@ public TestSceneTrianglesV2Background()
                                 new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.Red
+                                    Colour = Colour4.Red
                                 },
                                 maskedTriangles = new TrianglesV2
                                 {
@@ -126,9 +125,9 @@ protected override void LoadComplete()
             });
             AddSliderStep("Thickness", 0f, 1f, 0.02f, t => triangles.Thickness = maskedTriangles.Thickness = t);
 
-            AddStep("White colour", () => box.Colour = triangles.Colour = maskedTriangles.Colour = Color4.White);
-            AddStep("Vertical gradient", () => box.Colour = triangles.Colour = maskedTriangles.Colour = ColourInfo.GradientVertical(Color4.White, Color4.Red));
-            AddStep("Horizontal gradient", () => box.Colour = triangles.Colour = maskedTriangles.Colour = ColourInfo.GradientHorizontal(Color4.White, Color4.Red));
+            AddStep("White colour", () => box.Colour = triangles.Colour = maskedTriangles.Colour = Colour4.White);
+            AddStep("Vertical gradient", () => box.Colour = triangles.Colour = maskedTriangles.Colour = ColourInfo.GradientVertical(Colour4.White, Colour4.Red));
+            AddStep("Horizontal gradient", () => box.Colour = triangles.Colour = maskedTriangles.Colour = ColourInfo.GradientHorizontal(Colour4.White, Colour4.Red));
             AddStep("ClampAxes X", () => maskedTriangles.ClampAxes = Axes.X);
             AddStep("ClampAxes Y", () => maskedTriangles.ClampAxes = Axes.Y);
             AddStep("ClampAxes Both", () => maskedTriangles.ClampAxes = Axes.Both);
diff --git a/osu.Game.Tests/Visual/Background/TestSceneUserDimBackgrounds.cs b/osu.Game.Tests/Visual/Background/TestSceneUserDimBackgrounds.cs
index 3b531e203610..90f369c55c65 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneUserDimBackgrounds.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneUserDimBackgrounds.cs
@@ -5,6 +5,7 @@
 
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -35,8 +36,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Storyboards.Drawables;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Background
 {
@@ -306,7 +305,7 @@ private void createFakeStoryboard() => AddStep("Create storyboard", () =>
                 {
                     Size = new Vector2(500, 50),
                     Alpha = 1,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Text = "THIS IS A STORYBOARD",
@@ -372,7 +371,7 @@ private void load(OsuConfigManager config)
 
             public bool IsBackgroundDimmed() => background.CurrentColour == OsuColour.Gray(1f - background.CurrentDim);
 
-            public bool IsBackgroundUndimmed() => background.CurrentColour == new Color4(0.9f, 0.9f, 0.9f, 1f);
+            public bool IsBackgroundUndimmed() => background.CurrentColour == new Colour4(0.9f, 0.9f, 0.9f, 1f);
 
             public bool IsUserBlurApplied() => Precision.AlmostEquals(background.CurrentBlur, new Vector2((float)BlurLevel.Value * BackgroundScreenBeatmap.USER_BLUR_FACTOR), 0.1f);
 
@@ -469,7 +468,7 @@ private partial class FadeAccessibleBackground : BackgroundScreenBeatmap
         {
             protected override DimmableBackground CreateFadeContainer() => dimmable = new TestDimmableBackground { RelativeSizeAxes = Axes.Both };
 
-            public Color4 CurrentColour => dimmable.CurrentColour;
+            public Colour4 CurrentColour => dimmable.CurrentColour;
 
             public float CurrentAlpha => dimmable.CurrentAlpha;
 
@@ -498,7 +497,7 @@ protected override void Update()
 
         private partial class TestDimmableBackground : BackgroundScreenBeatmap.DimmableBackground
         {
-            public Color4 CurrentColour => Content.Colour;
+            public Colour4 CurrentColour => Content.Colour;
             public float CurrentAlpha => Content.Alpha;
 
             public new float DimLevel => base.DimLevel;
diff --git a/osu.Game.Tests/Visual/Background/TestSceneUserDimContainer.cs b/osu.Game.Tests/Visual/Background/TestSceneUserDimContainer.cs
index ff35f5e8a912..2ea5ff323ec2 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneUserDimContainer.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneUserDimContainer.cs
@@ -11,7 +11,6 @@
 using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Background
 {
@@ -37,7 +36,7 @@ public void SetUp() => Schedule(() =>
                 RelativeSizeAxes = Axes.Both,
                 Child = new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both,
                 },
             };
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCard.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCard.cs
index 2f31911fac43..9b114f0798d8 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCard.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCard.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -22,8 +23,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardDownloadButton.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardDownloadButton.cs
index ed80def57dee..699114b85d36 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardDownloadButton.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardDownloadButton.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Osu;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardFavouriteButton.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardFavouriteButton.cs
index 81abe105f112..e7dd77deeded 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardFavouriteButton.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardFavouriteButton.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Sprites;
@@ -14,8 +15,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardThumbnail.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardThumbnail.cs
index f5f9d121cc34..b87964642303 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardThumbnail.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapCardThumbnail.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,8 +13,7 @@
 using osu.Game.Beatmaps.Drawables.Cards;
 using osu.Game.Beatmaps.Drawables.Cards.Buttons;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapSetOnlineStatusPill.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapSetOnlineStatusPill.cs
index 7138fc4959e2..dd4c37df784f 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapSetOnlineStatusPill.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneBeatmapSetOnlineStatusPill.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -13,7 +14,6 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Overlays;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultyIcon.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultyIcon.cs
index fb6bebe50db3..66e8962478e7 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultyIcon.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultyIcon.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -9,7 +10,6 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultySpectrumDisplay.cs b/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultySpectrumDisplay.cs
index 39de2b7bc9fe..ef0607a3e620 100644
--- a/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultySpectrumDisplay.cs
+++ b/osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultySpectrumDisplay.cs
@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Beatmaps
 {
diff --git a/osu.Game.Tests/Visual/Colours/TestSceneStarDifficultyColours.cs b/osu.Game.Tests/Visual/Colours/TestSceneStarDifficultyColours.cs
index 8ad7bf47b4e6..5a8c06c16f00 100644
--- a/osu.Game.Tests/Visual/Colours/TestSceneStarDifficultyColours.cs
+++ b/osu.Game.Tests/Visual/Colours/TestSceneStarDifficultyColours.cs
@@ -2,9 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -12,7 +12,6 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Colours
 {
diff --git a/osu.Game.Tests/Visual/Components/TestSceneFriendPresenceNotifier.cs b/osu.Game.Tests/Visual/Components/TestSceneFriendPresenceNotifier.cs
index d97fa3e54608..a1b931cec32e 100644
--- a/osu.Game.Tests/Visual/Components/TestSceneFriendPresenceNotifier.cs
+++ b/osu.Game.Tests/Visual/Components/TestSceneFriendPresenceNotifier.cs
@@ -15,7 +15,7 @@
 using osu.Game.Overlays.Notifications;
 using osu.Game.Tests.Visual.Metadata;
 using osu.Game.Users;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Components
 {
diff --git a/osu.Game.Tests/Visual/Components/TestSceneIdleTracker.cs b/osu.Game.Tests/Visual/Components/TestSceneIdleTracker.cs
index aad30ff4505b..ff4c2e4add58 100644
--- a/osu.Game.Tests/Visual/Components/TestSceneIdleTracker.cs
+++ b/osu.Game.Tests/Visual/Components/TestSceneIdleTracker.cs
@@ -3,13 +3,12 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Input;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Components
 {
@@ -34,7 +33,7 @@ public void SetUp() => Schedule(() =>
                 {
                     Name = "TopLeft",
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Red,
+                    Colour = Colour4.Red,
                     Anchor = Anchor.TopLeft,
                     Origin = Anchor.TopLeft,
                 },
@@ -42,7 +41,7 @@ public void SetUp() => Schedule(() =>
                 {
                     Name = "TopRight",
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Green,
+                    Colour = Colour4.Green,
                     Anchor = Anchor.TopRight,
                     Origin = Anchor.TopRight,
                 },
@@ -50,7 +49,7 @@ public void SetUp() => Schedule(() =>
                 {
                     Name = "BottomLeft",
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Blue,
+                    Colour = Colour4.Blue,
                     Anchor = Anchor.BottomLeft,
                     Origin = Anchor.BottomLeft,
                 },
@@ -58,7 +57,7 @@ public void SetUp() => Schedule(() =>
                 {
                     Name = "BottomRight",
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Orange,
+                    Colour = Colour4.Orange,
                     Anchor = Anchor.BottomRight,
                     Origin = Anchor.BottomRight,
                 },
@@ -172,12 +171,12 @@ public IdleTrackingBox(int timeToIdle)
                     idleTracker = new GameIdleTracker(timeToIdle),
                     box = new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                     },
                 };
 
-                idleTracker.IsIdle.BindValueChanged(idle => box.Colour = idle.NewValue ? Color4.White : Color4.Black, true);
+                idleTracker.IsIdle.BindValueChanged(idle => box.Colour = idle.NewValue ? Colour4.White : Colour4.Black, true);
             }
         }
     }
diff --git a/osu.Game.Tests/Visual/Components/TestScenePollingComponent.cs b/osu.Game.Tests/Visual/Components/TestScenePollingComponent.cs
index 4bab8d0ccc7f..366aa9ab9b93 100644
--- a/osu.Game.Tests/Visual/Components/TestScenePollingComponent.cs
+++ b/osu.Game.Tests/Visual/Components/TestScenePollingComponent.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,8 +14,6 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Components
 {
@@ -45,7 +44,7 @@ public void SetUp() => Schedule(() =>
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                             Scale = new Vector2(0.4f),
-                            Colour = Color4.LimeGreen,
+                            Colour = Colour4.LimeGreen,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new OsuSpriteText
diff --git a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallenge.cs b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallenge.cs
index da10c15cd752..1c55afb1a7d9 100644
--- a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallenge.cs
+++ b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallenge.cs
@@ -19,7 +19,7 @@
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.Metadata;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.DailyChallenge
 {
diff --git a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeIntro.cs b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeIntro.cs
index c715105e01bf..e50f099754c2 100644
--- a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeIntro.cs
+++ b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeIntro.cs
@@ -17,8 +17,8 @@
 using osu.Game.Screens.OnlinePlay.DailyChallenge;
 using osu.Game.Tests.Visual.Metadata;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Visual.DailyChallenge
 {
@@ -39,7 +39,7 @@ private void load()
             Add(metadataClient);
 
             // add button to observe for daily challenge changes and perform its logic.
-            Add(new DailyChallengeButton(@"button-default-select", new Color4(102, 68, 204, 255), (_, _) => { }, 0, Key.D));
+            Add(new DailyChallengeButton(@"button-default-select", new Colour4(102, 68, 204, 255), (_, _) => { }, 0, Key.D));
         }
 
         [Test]
diff --git a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeLeaderboard.cs b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeLeaderboard.cs
index d21ca22e1bb3..232a786cff1a 100644
--- a/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeLeaderboard.cs
+++ b/osu.Game.Tests/Visual/DailyChallenge/TestSceneDailyChallengeLeaderboard.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Screens.OnlinePlay.DailyChallenge;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.DailyChallenge
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneBeatDivisorControl.cs b/osu.Game.Tests/Visual/Editing/TestSceneBeatDivisorControl.cs
index 6c36e6729e78..eddae1fa1202 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneBeatDivisorControl.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneBeatDivisorControl.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,8 +15,7 @@
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneBlueprintOrdering.cs b/osu.Game.Tests/Visual/Editing/TestSceneBlueprintOrdering.cs
index f8056eac2bab..e78f88c5f46c 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneBlueprintOrdering.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneBlueprintOrdering.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -17,8 +18,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneColoursSection.cs b/osu.Game.Tests/Visual/Editing/TestSceneColoursSection.cs
index 5a3329bbc9ac..d5f5488eefab 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneColoursSection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneColoursSection.cs
@@ -13,7 +13,6 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -46,7 +45,7 @@ public void TestNoBeatmapSkinColours()
             AddAssert("beatmap skin has no colours", () => skin.Configuration.CustomComboColours, () => Is.Empty);
             AddAssert("section displays default combo colours",
                 () => coloursSection.ChildrenOfType<FormColourPalette>().Single().Colours,
-                () => Is.EquivalentTo(new Colour4[]
+                () => Is.EquivalentTo(new[]
                 {
                     SkinConfiguration.DefaultComboColours[1],
                     SkinConfiguration.DefaultComboColours[2],
@@ -62,7 +61,7 @@ public void TestNoBeatmapSkinColours()
                     SkinConfiguration.DefaultComboColours[1],
                     SkinConfiguration.DefaultComboColours[2],
                     SkinConfiguration.DefaultComboColours[3],
-                    Color4.Aqua,
+                    Colour4.Aqua,
                     SkinConfiguration.DefaultComboColours[0],
                 }));
         }
@@ -76,11 +75,11 @@ public void TestExistingColours()
             AddStep("create beatmap skin", () =>
             {
                 skin = new LegacyBeatmapSkin(new BeatmapInfo(), null);
-                skin.Configuration.CustomComboColours = new List<Color4>
+                skin.Configuration.CustomComboColours = new List<Colour4>
                 {
-                    Color4.Azure,
-                    Color4.Beige,
-                    Color4.Chartreuse
+                    Colour4.Azure,
+                    Colour4.Beige,
+                    Colour4.Chartreuse
                 };
             });
             AddStep("create colours section", () => Child = new DependencyProvidingContainer
@@ -113,10 +112,10 @@ public void TestExistingColours()
                 () => skin.Configuration.CustomComboColours,
                 () => Is.EquivalentTo(new[]
                 {
-                    Color4.Azure,
-                    Color4.Beige,
-                    Color4.Aqua,
-                    Color4.Chartreuse
+                    Colour4.Azure,
+                    Colour4.Beige,
+                    Colour4.Aqua,
+                    Colour4.Chartreuse
                 }));
         }
     }
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneComposeSelectBox.cs b/osu.Game.Tests/Visual/Editing/TestSceneComposeSelectBox.cs
index 2bf07d8e274f..7d0ffb8c3bb9 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneComposeSelectBox.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneComposeSelectBox.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -15,8 +16,7 @@
 using osu.Framework.Threading;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneComposerSelection.cs b/osu.Game.Tests/Visual/Editing/TestSceneComposerSelection.cs
index df5b58f31063..f5eddac1b008 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneComposerSelection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneComposerSelection.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using osu.Framework.Graphics;
@@ -22,8 +23,7 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneDesignSection.cs b/osu.Game.Tests/Visual/Editing/TestSceneDesignSection.cs
index 2858650e3cda..48681e0fed11 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneDesignSection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneDesignSection.cs
@@ -18,7 +18,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneDifficultyDelete.cs b/osu.Game.Tests/Visual/Editing/TestSceneDifficultyDelete.cs
index 62ff59c6b366..9bd6556a064c 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneDifficultyDelete.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneDifficultyDelete.cs
@@ -16,7 +16,7 @@
 using osu.Game.Screens.Edit.Components.Menus;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneDistanceSnapGrid.cs b/osu.Game.Tests/Visual/Editing/TestSceneDistanceSnapGrid.cs
index fb57422e663a..b7c3c6b9ae4e 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneDistanceSnapGrid.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneDistanceSnapGrid.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -15,8 +16,6 @@
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -56,7 +55,7 @@ public void Setup() => Schedule(() =>
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.SlateGray
+                    Colour = Colour4.SlateGray
                 },
                 grid = new TestDistanceSnapGrid()
             };
@@ -98,7 +97,7 @@ public void TestLimitedDistance(double multiplier)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.SlateGray
+                        Colour = Colour4.SlateGray
                     },
                     grid = new TestDistanceSnapGrid(end_time)
                 };
@@ -162,7 +161,7 @@ protected override void CreateContent()
                     {
                         Origin = Anchor.Centre,
                         Size = new Vector2(10, 5),
-                        Position = new Vector2(StartPosition.X, s),
+                        Position = StartPosition with { Y = s },
                         Colour = GetColourForIndexFromPlacement(indexFromPlacement)
                     });
                 }
@@ -175,7 +174,7 @@ protected override void CreateContent()
                     {
                         Origin = Anchor.Centre,
                         Size = new Vector2(10, 5),
-                        Position = new Vector2(StartPosition.X, s),
+                        Position = StartPosition with { Y = s },
                         Colour = GetColourForIndexFromPlacement(indexFromPlacement)
                     });
                 }
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorBeatmapCreation.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorBeatmapCreation.cs
index ed91fe848ab3..48691ab1fea1 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorBeatmapCreation.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorBeatmapCreation.cs
@@ -5,6 +5,7 @@
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
@@ -33,8 +34,7 @@
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 using SharpCompress.Archives;
 using SharpCompress.Archives.Zip;
 
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorBindings.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorBindings.cs
index 61723aab7e8b..bf3b90923dd7 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorBindings.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorBindings.cs
@@ -4,7 +4,7 @@
 using NUnit.Framework;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorClipboard.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorClipboard.cs
index ce9dbd5fb1a5..953cf6221d97 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorClipboard.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorClipboard.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -16,7 +17,6 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorClock.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorClock.cs
index bfc8af7283c1..3060c270cf1f 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorClock.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorClock.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,7 +13,6 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorSaving.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorSaving.cs
index a50f1cca2934..1840c73b7344 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorSaving.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorSaving.cs
@@ -16,7 +16,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Screens.Select;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorSeekSnapping.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorSeekSnapping.cs
index 9df5df6b394b..8129effd0820 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorSeekSnapping.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorSeekSnapping.cs
@@ -3,16 +3,14 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -341,7 +339,7 @@ public TimingPointVisualiser(IBeatmap beatmap, double length)
                     {
                         Name = "Background",
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black.Opacity(85f)
+                        Colour = Colour4.Black.Opacity(85f)
                     },
                     new Container
                     {
@@ -358,7 +356,7 @@ public TimingPointVisualiser(IBeatmap beatmap, double length)
                                 RelativeSizeAxes = Axes.Y,
                                 RelativePositionAxes = Axes.X,
                                 Width = 2,
-                                Colour = Color4.Red,
+                                Colour = Colour4.Red,
                             },
                             timelineContainer = new FillFlowContainer
                             {
@@ -411,7 +409,7 @@ public TimingPointTimeline(TimingControlPoint timingPoint, double endTime, doubl
                         X = (float)(time / fullDuration),
                         Height = 5,
                         Width = 2,
-                        Colour = time > endTime ? Color4.Gray : Color4.Yellow
+                        Colour = time > endTime ? Colour4.Gray : Colour4.Yellow
                     };
 
                     AddInternal(createMainTick(timingPoint.Time));
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorSeeking.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorSeeking.cs
index 06facc546d02..1e7b172c846a 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorSeeking.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorSeeking.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorSummaryTimeline.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorSummaryTimeline.cs
index e584f1b9d72d..afd5337cce3f 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorSummaryTimeline.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorSummaryTimeline.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -8,7 +9,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.Timelines.Summary;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneEditorTestGameplay.cs b/osu.Game.Tests/Visual/Editing/TestSceneEditorTestGameplay.cs
index f65a3e67e85b..27798f0a518e 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneEditorTestGameplay.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneEditorTestGameplay.cs
@@ -24,7 +24,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectComposer.cs b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectComposer.cs
index 77c2aa9ae1af..eafd9a4e0289 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectComposer.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectComposer.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -24,8 +25,7 @@
 using osu.Game.Screens.Edit.Components.RadioButtons;
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -194,7 +194,7 @@ public void TestPlacementWithinToolboxScrollArea()
                 // and the playfield/composer.
                 var scrollArea = hitObjectComposer.ChildrenOfType<ExpandingToolboxContainer>().First().ScreenSpaceDrawQuad;
                 var playfield = hitObjectComposer.Playfield.ScreenSpaceDrawQuad;
-                InputManager.MoveMouseTo(new Vector2(scrollArea.TopLeft.X + 1, playfield.Centre.Y));
+                InputManager.MoveMouseTo(playfield.Centre with { X = scrollArea.TopLeft.X + 1 });
             });
 
             AddAssert("no circles placed", () => editorBeatmap.HitObjects.Count == 0);
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectDifficultyPointAdjustments.cs b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectDifficultyPointAdjustments.cs
index 530b3db208ec..5c830ba00e05 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectDifficultyPointAdjustments.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectDifficultyPointAdjustments.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using Humanizer;
 using NUnit.Framework;
 using osu.Framework.Testing;
@@ -16,8 +17,7 @@
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectSampleAdjustments.cs b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectSampleAdjustments.cs
index 05eb23c770a3..c312c63c01da 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneHitObjectSampleAdjustments.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneHitObjectSampleAdjustments.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Humanizer;
 using NUnit.Framework;
 using osu.Framework.Testing;
@@ -23,8 +24,7 @@
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneMetadataSection.cs b/osu.Game.Tests/Visual/Editing/TestSceneMetadataSection.cs
index 995acd28dd05..63bfb2769387 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneMetadataSection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneMetadataSection.cs
@@ -16,7 +16,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Setup;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestScenePlacementBlueprint.cs b/osu.Game.Tests/Visual/Editing/TestScenePlacementBlueprint.cs
index 7e135f29de3b..a8cabd408e40 100644
--- a/osu.Game.Tests/Visual/Editing/TestScenePlacementBlueprint.cs
+++ b/osu.Game.Tests/Visual/Editing/TestScenePlacementBlueprint.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
@@ -21,8 +22,7 @@
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestScenePlaybackControl.cs b/osu.Game.Tests/Visual/Editing/TestScenePlaybackControl.cs
index 6fa52d5bbc0e..1c1c889ba08c 100644
--- a/osu.Game.Tests/Visual/Editing/TestScenePlaybackControl.cs
+++ b/osu.Game.Tests/Visual/Editing/TestScenePlaybackControl.cs
@@ -1,11 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Screens.Edit.Components;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestScenePositionSnapGrid.cs b/osu.Game.Tests/Visual/Editing/TestScenePositionSnapGrid.cs
index 72a11a526e93..5c827ee4615c 100644
--- a/osu.Game.Tests/Visual/Editing/TestScenePositionSnapGrid.cs
+++ b/osu.Game.Tests/Visual/Editing/TestScenePositionSnapGrid.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,8 +12,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -129,7 +128,7 @@ public SnappingCursorContainer()
                 {
                     Origin = Anchor.Centre,
                     Size = new Vector2(50),
-                    Colour = Color4.Red
+                    Colour = Colour4.Red
                 };
             }
 
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneSelectionBlueprintDeselection.cs b/osu.Game.Tests/Visual/Editing/TestSceneSelectionBlueprintDeselection.cs
index 24f50d36a298..f2393a3d23d7 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneSelectionBlueprintDeselection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneSelectionBlueprintDeselection.cs
@@ -8,7 +8,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneSubmissionStageProgress.cs b/osu.Game.Tests/Visual/Editing/TestSceneSubmissionStageProgress.cs
index 2dc9077a1406..7912072a6df2 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneSubmissionStageProgress.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneSubmissionStageProgress.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -13,7 +14,6 @@
 using osu.Game.Beatmaps.Drawables.Cards;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Submission;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTapButton.cs b/osu.Game.Tests/Visual/Editing/TestSceneTapButton.cs
index 8562fb746aa5..79c235f50427 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTapButton.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTapButton.cs
@@ -3,13 +3,13 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Timing;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTapTimingControl.cs b/osu.Game.Tests/Visual/Editing/TestSceneTapTimingControl.cs
index f38df89e8269..97b815446b5e 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTapTimingControl.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTapTimingControl.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -17,8 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Timing;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTimelineHitObjectBlueprint.cs b/osu.Game.Tests/Visual/Editing/TestSceneTimelineHitObjectBlueprint.cs
index 7a5243f6e807..95a48a0a728a 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTimelineHitObjectBlueprint.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTimelineHitObjectBlueprint.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
@@ -10,8 +11,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 using static osu.Game.Screens.Edit.Compose.Components.Timeline.TimelineHitObjectBlueprint;
 
 namespace osu.Game.Tests.Visual.Editing
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTimelineSelection.cs b/osu.Game.Tests/Visual/Editing/TestSceneTimelineSelection.cs
index 1915c00eb458..80e73ab5e8e2 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTimelineSelection.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTimelineSelection.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
@@ -19,8 +20,7 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTimelineTickDisplay.cs b/osu.Game.Tests/Visual/Editing/TestSceneTimelineTickDisplay.cs
index 18bd6d840a6e..7c81fbfc8bff 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTimelineTickDisplay.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTimelineTickDisplay.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneTimingScreen.cs b/osu.Game.Tests/Visual/Editing/TestSceneTimingScreen.cs
index eecfb7cb6ee7..e9591b732c49 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneTimingScreen.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneTimingScreen.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -19,8 +20,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Screens.Edit.Timing.RowAttributes;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneWaveform.cs b/osu.Game.Tests/Visual/Editing/TestSceneWaveform.cs
index 4c2b77bb1dc6..7227d13b7a59 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneWaveform.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneWaveform.cs
@@ -15,7 +15,6 @@
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Osu;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -64,7 +63,7 @@ public void TestResolution(float resolution)
                                 new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.Black,
+                                    Colour = Colour4.Black,
                                     Alpha = 0.75f
                                 },
                                 new OsuSpriteText
diff --git a/osu.Game.Tests/Visual/Editing/TestSceneZoomableScrollContainer.cs b/osu.Game.Tests/Visual/Editing/TestSceneZoomableScrollContainer.cs
index 2c84e76b2e07..77e98af81865 100644
--- a/osu.Game.Tests/Visual/Editing/TestSceneZoomableScrollContainer.cs
+++ b/osu.Game.Tests/Visual/Editing/TestSceneZoomableScrollContainer.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -15,9 +16,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -61,7 +60,7 @@ public void SetUpSteps()
                 scrollContainer.Add(innerBox = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = ColourInfo.GradientHorizontal(new Color4(0.8f, 0.6f, 0.4f, 1f), new Color4(0.4f, 0.6f, 0.8f, 1f))
+                    Colour = ColourInfo.GradientHorizontal(new Colour4(0.8f, 0.6f, 0.4f, 1f), new Colour4(0.4f, 0.6f, 0.8f, 1f))
                 });
             });
             AddUntilStep("Scroll container is loaded", () => scrollContainer.LoadState >= LoadState.Loaded);
diff --git a/osu.Game.Tests/Visual/Editing/TimelineTestScene.cs b/osu.Game.Tests/Visual/Editing/TimelineTestScene.cs
index cb45ad5a076e..0d39da547fea 100644
--- a/osu.Game.Tests/Visual/Editing/TimelineTestScene.cs
+++ b/osu.Game.Tests/Visual/Editing/TimelineTestScene.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
@@ -18,8 +19,6 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
 using osu.Game.Storyboards;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Editing
 {
@@ -133,7 +132,7 @@ private partial class StartStopButton : OsuButton
 
             public StartStopButton()
             {
-                BackgroundColour = Color4.SlateGray;
+                BackgroundColour = Colour4.SlateGray;
                 Size = new Vector2(100, 50);
                 Text = "Start";
 
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneArgonHealthDisplay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneArgonHealthDisplay.cs
index 319efee1a748..7a98c2e7b5c0 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneArgonHealthDisplay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneArgonHealthDisplay.cs
@@ -14,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -55,7 +54,7 @@ public void SetUpSteps()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                     },
                     healthDisplay = new ArgonHealthDisplay
                     {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapMetadataDisplay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapMetadataDisplay.cs
index 2221c80e34a5..84f447628278 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapMetadataDisplay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapMetadataDisplay.cs
@@ -7,6 +7,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -17,7 +18,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneBezierConverter.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneBezierConverter.cs
index b9111653f254..84bd53046eae 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneBezierConverter.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneBezierConverter.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -10,7 +11,6 @@
 using osu.Framework.Graphics.Lines;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneBreakTracker.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneBreakTracker.cs
index 844f5cba01bc..176aac6c3424 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneBreakTracker.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneBreakTracker.cs
@@ -13,7 +13,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -36,7 +35,7 @@ public TestSceneBreakTracker()
             {
                 new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both,
                 },
                 breakTracker = new TestBreakTracker(),
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneClicksPerSecondCalculator.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneClicksPerSecondCalculator.cs
index 9c93eb375cce..1563d1f5f1f2 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneClicksPerSecondCalculator.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneClicksPerSecondCalculator.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
@@ -11,7 +12,6 @@
 using osu.Framework.Timing;
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.HUD.ClicksPerSecond;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneColourHitErrorMeter.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneColourHitErrorMeter.cs
index 0784aac29867..400fe00ff59e 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneColourHitErrorMeter.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneColourHitErrorMeter.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Diagnostics;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneCompletionCancellation.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneCompletionCancellation.cs
index f19f4b669046..8f8e003402a8 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneCompletionCancellation.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneCompletionCancellation.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -15,7 +16,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking;
 using osu.Game.Storyboards;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableGameplayLeaderboardScore.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableGameplayLeaderboardScore.cs
index e17f1349b316..458c2568bbac 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableGameplayLeaderboardScore.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableGameplayLeaderboardScore.cs
@@ -9,7 +9,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -42,7 +41,7 @@ public TestSceneDrawableGameplayLeaderboardScore()
         };
 
         [TestCaseSource(nameof(leaderboard_variants))]
-        public void TestVariants(bool tracked, Color4? teamColour)
+        public void TestVariants(bool tracked, Colour4? teamColour)
         {
             AddStep("show", () =>
             {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableScrollingRuleset.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableScrollingRuleset.cs
index 5103ad3286aa..e2cb864997b3 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableScrollingRuleset.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableScrollingRuleset.cs
@@ -7,6 +7,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Bindables;
@@ -28,8 +29,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -377,7 +376,7 @@ public TestPlayfield()
                                     Origin = Anchor.Centre,
                                     RelativeSizeAxes = Axes.X,
                                     Height = 2,
-                                    Colour = Color4.Green
+                                    Colour = Colour4.Green
                                 },
                                 HitObjectContainer
                             }
@@ -451,14 +450,14 @@ public DrawableTestHitObject([CanBeNull] TestHitObject hitObject)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.LightPink
+                        Colour = Colour4.LightPink
                     },
                     new Box
                     {
                         Origin = Anchor.CentreLeft,
                         RelativeSizeAxes = Axes.X,
                         Height = 2,
-                        Colour = Color4.Red
+                        Colour = Colour4.Red
                     }
                 });
             }
@@ -471,8 +470,8 @@ private partial class DrawableTestPooledHitObject : DrawableTestHitObject
             public DrawableTestPooledHitObject()
                 : base(null)
             {
-                InternalChildren[0].Colour = Color4.LightSkyBlue;
-                InternalChildren[1].Colour = Color4.Blue;
+                InternalChildren[0].Colour = Colour4.LightSkyBlue;
+                InternalChildren[1].Colour = Colour4.Blue;
             }
         }
 
@@ -483,8 +482,8 @@ private partial class DrawableTestParentHitObject : DrawableTestHitObject
             public DrawableTestParentHitObject([CanBeNull] TestHitObject hitObject)
                 : base(hitObject)
             {
-                InternalChildren[0].Colour = Color4.LightYellow;
-                InternalChildren[1].Colour = Color4.Yellow;
+                InternalChildren[0].Colour = Colour4.LightYellow;
+                InternalChildren[1].Colour = Colour4.Yellow;
 
                 AddInternal(container = new Container<DrawableHitObject>
                 {
@@ -505,8 +504,8 @@ private partial class DrawableTestPooledParentHitObject : DrawableTestParentHitO
             public DrawableTestPooledParentHitObject()
                 : base(null)
             {
-                InternalChildren[0].Colour = Color4.LightSeaGreen;
-                InternalChildren[1].Colour = Color4.Green;
+                InternalChildren[0].Colour = Colour4.LightSeaGreen;
+                InternalChildren[1].Colour = Colour4.Green;
             }
         }
 
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableStoryboardSprite.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableStoryboardSprite.cs
index afbd9da73cba..038f555160c7 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableStoryboardSprite.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneDrawableStoryboardSprite.cs
@@ -6,6 +6,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -21,7 +22,6 @@
 using osu.Game.Storyboards;
 using osu.Game.Storyboards.Drawables;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayLeaderboard.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayLeaderboard.cs
index 764a8569e6d0..76b087a2f70b 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayLeaderboard.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayLeaderboard.cs
@@ -23,7 +23,6 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.Leaderboards;
 using osu.Game.Tests.Gameplay;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -254,7 +253,7 @@ private void createLeaderboard()
                         blackBackground = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             Alpha = 0f,
                         },
                         leaderboard = new DrawableGameplayLeaderboard
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayMenuOverlay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayMenuOverlay.cs
index 3501c1a52165..0c3a2cd59782 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayMenuOverlay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayMenuOverlay.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,8 +11,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Screens.Play;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayRewinding.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayRewinding.cs
index 0cb74ecde69e..285f5308d9f8 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayRewinding.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplayRewinding.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Storyboards;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplaySampleTriggerSource.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplaySampleTriggerSource.cs
index 894b51ddcbf9..27734c374d80 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneGameplaySampleTriggerSource.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneGameplaySampleTriggerSource.cs
@@ -3,6 +3,7 @@
 
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -21,8 +22,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Storyboards;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneHUDOverlay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneHUDOverlay.cs
index c9ff2f6612b1..ec480131cd78 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneHUDOverlay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneHUDOverlay.cs
@@ -19,7 +19,7 @@
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
 using osu.Game.Skinning;
 using osu.Game.Tests.Gameplay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneHoldForMenuButton.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneHoldForMenuButton.cs
index cd1334165b3c..7ccd2f86c315 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneHoldForMenuButton.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneHoldForMenuButton.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -9,8 +10,7 @@
 using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneKeyBindings.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneKeyBindings.cs
index 53c07304cf19..d069f73b4ab9 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneKeyBindings.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneKeyBindings.cs
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneKeyCounter.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneKeyCounter.cs
index 57bfb5fddf84..152264433b38 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneKeyCounter.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneKeyCounter.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,8 +11,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneLeadIn.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneLeadIn.cs
index 8cbd6249e058..9cefacf2cda1 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneLeadIn.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneLeadIn.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Timing;
@@ -11,7 +12,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneMedalOverlay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneMedalOverlay.cs
index 5dc553b9dfe2..0617b310b991 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneMedalOverlay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneMedalOverlay.cs
@@ -13,7 +13,7 @@
 using osu.Game.Online.Notifications.WebSocket;
 using osu.Game.Online.Notifications.WebSocket.Events;
 using osu.Game.Overlays;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneParticleExplosion.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneParticleExplosion.cs
index 2d48ac81e2f8..b1ac780a3869 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneParticleExplosion.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneParticleExplosion.cs
@@ -3,12 +3,12 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneParticleSpewer.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneParticleSpewer.cs
index 8fb34883bbef..be036f128c37 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneParticleSpewer.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneParticleSpewer.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -13,7 +14,6 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePause.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePause.cs
index 08317c37cfe7..52aabf63da37 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePause.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePause.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -21,8 +22,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePauseInputHandling.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePauseInputHandling.cs
index 2c0d7d674489..0ac3b7457cfa 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePauseInputHandling.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePauseInputHandling.cs
@@ -19,7 +19,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
 using osu.Game.Storyboards;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePauseWhenInactive.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePauseWhenInactive.cs
index b770f72f1926..02469089ee33 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePauseWhenInactive.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePauseWhenInactive.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLoader.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLoader.cs
index 6ac82005a71a..78289f87ea99 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLoader.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLoader.cs
@@ -8,6 +8,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -34,8 +35,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.PlayerSettings;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLocalScoreImport.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLocalScoreImport.cs
index 974d52d725ab..bbe573a232cf 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLocalScoreImport.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerLocalScoreImport.cs
@@ -30,7 +30,7 @@
 using osu.Game.Screens.Ranking;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerScoreSubmission.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerScoreSubmission.cs
index c0cddf0f6a9c..5b3a3fbf5c84 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePlayerScoreSubmission.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePlayerScoreSubmission.cs
@@ -29,7 +29,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Ranking;
 using osu.Game.Tests.Beatmaps;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestScenePoolingRuleset.cs b/osu.Game.Tests/Visual/Gameplay/TestScenePoolingRuleset.cs
index 7edfa90223b2..44ac7572a58b 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestScenePoolingRuleset.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestScenePoolingRuleset.cs
@@ -7,6 +7,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -25,8 +26,6 @@
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -410,7 +409,7 @@ public DrawableTestHitObject()
 
                 Size = new Vector2(50, 50);
 
-                Colour = new Color4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1f);
+                Colour = new Colour4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1f);
             }
 
             [BackgroundDependencyLoader]
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayDownloadButton.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayDownloadButton.cs
index c2988bf574d3..a602a52f9821 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayDownloadButton.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayDownloadButton.cs
@@ -18,7 +18,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Gameplay
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayPlayer.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayPlayer.cs
index c360dc6b5090..b8e5ff7fcb71 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayPlayer.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayPlayer.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
@@ -15,8 +16,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayRecorder.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayRecorder.cs
index 8ada5501748b..cad8bfd8c56f 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneReplayRecorder.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneReplayRecorder.cs
@@ -26,9 +26,8 @@
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Gameplay;
 using osu.Game.Tests.Mods;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -181,7 +180,7 @@ private void cleanUpState()
                             {
                                 new Box
                                 {
-                                    Colour = Color4.Brown,
+                                    Colour = Colour4.Brown,
                                     RelativeSizeAxes = Axes.Both,
                                 },
                                 new OsuSpriteText
@@ -211,7 +210,7 @@ private void cleanUpState()
                             {
                                 new Box
                                 {
-                                    Colour = Color4.DarkBlue,
+                                    Colour = Colour4.DarkBlue,
                                     RelativeSizeAxes = Axes.Both,
                                 },
                                 new OsuSpriteText
@@ -259,7 +258,7 @@ public TestInputConsumer()
                 {
                     box = new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                 };
@@ -276,13 +275,13 @@ public bool OnPressed(KeyBindingPressEvent<TestAction> e)
                 if (e.Repeat)
                     return false;
 
-                box.Colour = Color4.White;
+                box.Colour = Colour4.White;
                 return true;
             }
 
             public void OnReleased(KeyBindingReleaseEvent<TestAction> e)
             {
-                box.Colour = Color4.Black;
+                box.Colour = Colour4.Black;
             }
         }
 
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneScrollingHitObjects.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneScrollingHitObjects.cs
index af225a31a3f7..ff9280c52e20 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneScrollingHitObjects.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneScrollingHitObjects.cs
@@ -3,9 +3,9 @@
 
 #nullable disable
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -23,8 +23,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Timing;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -331,7 +329,7 @@ public TestDrawableHitObject(TestHitObject hitObject)
                 AddInternal(new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = new Color4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1)
+                    Colour = new Colour4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1)
                 });
             }
         }
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditor.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditor.cs
index 2a665d5e1cc7..8e7e29ac09d7 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditor.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditor.cs
@@ -5,6 +5,7 @@
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Numerics;
 using Newtonsoft.Json;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -28,8 +29,6 @@
 using osu.Game.Skinning;
 using osu.Game.Skinning.Components;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditorMultipleSkins.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditorMultipleSkins.cs
index 824e4f6a1cb2..6c4515fa51f1 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditorMultipleSkins.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinEditorMultipleSkins.cs
@@ -17,7 +17,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.Leaderboards;
 using osu.Game.Tests.Gameplay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableDrawable.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableDrawable.cs
index be9f1ae9e2f7..f890a3413dc8 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableDrawable.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableDrawable.cs
@@ -7,6 +7,7 @@
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Sample;
@@ -19,8 +20,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -206,7 +205,7 @@ public DrawWidthBox()
                 {
                     new Box
                     {
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                         RelativeSizeAxes = Axes.Both,
                     },
                     text = new OsuSpriteText
@@ -232,7 +231,7 @@ public NamedBox(string name)
                 {
                     new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                     new OsuSpriteText
@@ -292,7 +291,7 @@ public Drawable GetDrawableComponent(ISkinComponentLookup componentLookupName) =
                 componentLookupName is TestSkinComponentLookup { LookupName: "available" }
                     ? new DrawWidthBox
                     {
-                        Colour = Color4.Yellow,
+                        Colour = Colour4.Yellow,
                         Size = new Vector2(size)
                     }
                     : null;
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableHealthDisplay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableHealthDisplay.cs
index 3fd6caf7f273..54a46ee9be8e 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableHealthDisplay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableHealthDisplay.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableKeyCounter.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableKeyCounter.cs
index 8e9df5b2bf41..cbc362bfb2c3 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableKeyCounter.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkinnableKeyCounter.cs
@@ -8,7 +8,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSkipOverlay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSkipOverlay.cs
index 946b625608ba..4f8a95bbb2b7 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSkipOverlay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSkipOverlay.cs
@@ -3,14 +3,14 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Timing;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Play;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSliderPath.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSliderPath.cs
index d7c1df90ac21..6ae7fa049b3e 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSliderPath.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSliderPath.cs
@@ -5,12 +5,12 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Lines;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSongProgress.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSongProgress.cs
index 99f0ffb9d078..052eea7ab94e 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSongProgress.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSongProgress.cs
@@ -16,7 +16,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -40,7 +39,7 @@ private void load()
             {
                 background = new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both,
                     Depth = float.MaxValue
                 },
@@ -95,7 +94,7 @@ public void TestBasic()
                 applyToArgonProgress(s => s.ShowGraph.Value = b);
             });
 
-            AddStep("set white background", () => background.FadeColour(Color4.White, 200, Easing.OutQuint));
+            AddStep("set white background", () => background.FadeColour(Colour4.White, 200, Easing.OutQuint));
             AddStep("randomise background colour", () => background.FadeColour(new Colour4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1), 200, Easing.OutQuint));
 
             AddStep("stop", gameplayClockContainer.Stop);
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSpectator.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSpectator.cs
index 57d1f2692626..a3db467ee826 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSpectator.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSpectator.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -24,7 +25,6 @@
 using osu.Game.Tests.Gameplay;
 using osu.Game.Tests.Visual.Multiplayer;
 using osu.Game.Tests.Visual.Spectator;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneSpectatorPlayback.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneSpectatorPlayback.cs
index 062d73abbf68..0c93e44a14f8 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneSpectatorPlayback.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneSpectatorPlayback.cs
@@ -30,8 +30,7 @@
 using osu.Game.Tests.Gameplay;
 using osu.Game.Tests.Mods;
 using osu.Game.Tests.Visual.Spectator;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -95,7 +94,7 @@ public void SetUpSteps()
                                             {
                                                 new Box
                                                 {
-                                                    Colour = Color4.Brown,
+                                                    Colour = Colour4.Brown,
                                                     RelativeSizeAxes = Axes.Both,
                                                 },
                                                 new OsuSpriteText
@@ -126,7 +125,7 @@ public void SetUpSteps()
                                             {
                                                 new Box
                                                 {
-                                                    Colour = Color4.DarkBlue,
+                                                    Colour = Colour4.DarkBlue,
                                                     RelativeSizeAxes = Axes.Both,
                                                 },
                                                 new OsuSpriteText
@@ -273,7 +272,7 @@ public TestInputConsumer()
                 {
                     box = new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                 };
@@ -290,13 +289,13 @@ public bool OnPressed(KeyBindingPressEvent<TestAction> e)
                 if (e.Repeat)
                     return false;
 
-                box.Colour = Color4.White;
+                box.Colour = Colour4.White;
                 return true;
             }
 
             public void OnReleased(KeyBindingReleaseEvent<TestAction> e)
             {
-                box.Colour = Color4.Black;
+                box.Colour = Colour4.Black;
             }
         }
 
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStarCounter.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStarCounter.cs
index fa17b77b5509..9dedb39cf29c 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStarCounter.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStarCounter.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboard.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboard.cs
index 4b90bec78432..67008a236922 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboard.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboard.cs
@@ -22,7 +22,6 @@
 using osu.Game.Storyboards.Drawables;
 using osu.Game.Tests.Gameplay;
 using osu.Game.Tests.Resources;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -77,7 +76,7 @@ private void load()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                         },
                         storyboardContainer = new Container<DrawableStoryboard>
                         {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardCommands.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardCommands.cs
index 4af3d234635b..17d7cb0e4b55 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardCommands.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardCommands.cs
@@ -7,6 +7,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -21,7 +22,6 @@
 using osu.Game.Storyboards;
 using osu.Game.Storyboards.Drawables;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardSamplePlayback.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardSamplePlayback.cs
index ac54c9585396..9bd73088b191 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardSamplePlayback.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardSamplePlayback.cs
@@ -19,7 +19,7 @@
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Storyboards;
 using osu.Game.Storyboards.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithIntro.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithIntro.cs
index ee6a6938a917..f59e5acb933d 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithIntro.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithIntro.cs
@@ -2,7 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
+using osu.Framework.Input;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -12,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Play;
 using osu.Game.Storyboards;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -65,7 +66,7 @@ public void TestStoryboardSingleSkip(double storyboardStart, double firstObject)
             AddStep($"set first object start time to {firstObject}", () => firstObjectStartTime = firstObject);
             CreateTest();
 
-            AddStep("skip", () => InputManager.Key(osuTK.Input.Key.Space));
+            AddStep("skip", () => InputManager.Key(Key.Space));
             AddAssert("skip performed", () => Player.ChildrenOfType<SkipOverlay>().Any(s => s.SkipCount == 1));
             AddUntilStep("gameplay clock advanced", () => Player.GameplayClockContainer.CurrentTime, () => Is.GreaterThanOrEqualTo(firstObject - 2000));
         }
@@ -77,11 +78,11 @@ public void TestStoryboardDoubleSkip()
             AddStep("set first object start time to 11000", () => firstObjectStartTime = 11000);
             CreateTest();
 
-            AddStep("skip", () => InputManager.Key(osuTK.Input.Key.Space));
+            AddStep("skip", () => InputManager.Key(Key.Space));
             AddAssert("skip performed", () => Player.ChildrenOfType<SkipOverlay>().Any(s => s.SkipCount == 1));
             AddUntilStep("gameplay clock advanced", () => Player.GameplayClockContainer.CurrentTime, () => Is.GreaterThanOrEqualTo(0));
 
-            AddStep("skip", () => InputManager.Key(osuTK.Input.Key.Space));
+            AddStep("skip", () => InputManager.Key(Key.Space));
             AddAssert("skip performed", () => Player.ChildrenOfType<SkipOverlay>().Any(s => s.SkipCount == 2));
             AddUntilStep("gameplay clock advanced", () => Player.GameplayClockContainer.CurrentTime, () => Is.GreaterThanOrEqualTo(9000));
         }
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithOutro.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithOutro.cs
index 4f1a63341a47..22b7eb985455 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithOutro.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneStoryboardWithOutro.cs
@@ -6,7 +6,9 @@
 using System;
 using System.Linq;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
+using osu.Framework.Input;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Screens;
@@ -23,7 +25,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Ranking;
 using osu.Game.Storyboards;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -60,7 +61,7 @@ public void TestStoryboardSkipOutro()
             AddStep("set storyboard duration to long", () => currentStoryboardDuration = 200000);
             CreateTest();
             AddUntilStep("completion set by processor", () => Player.ScoreProcessor.HasCompleted.Value);
-            AddStep("skip outro", () => InputManager.Key(osuTK.Input.Key.Space));
+            AddStep("skip outro", () => InputManager.Key(Key.Space));
             AddUntilStep("player is no longer current screen", () => !Player.IsCurrentScreen());
             AddUntilStep("wait for score shown", () => Player.IsScoreShown);
         }
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneUserTopScoreContainer.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneUserTopScoreContainer.cs
index 8edf83631a87..fbc34b38cb7e 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneUserTopScoreContainer.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneUserTopScoreContainer.cs
@@ -13,7 +13,6 @@
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Scoring;
 using osu.Game.Users;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -42,7 +41,7 @@ public TestSceneUserTopScoreContainer()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.DarkGreen,
+                        Colour = Colour4.DarkGreen,
                     },
                     topScoreContainer = new UserTopScoreContainer<ScoreInfo>(s => new LeaderboardScore(s, s.Position, false))
                     {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestSceneBeatmapSelectGrid.cs b/osu.Game.Tests/Visual/Matchmaking/TestSceneBeatmapSelectGrid.cs
index b3c9f7a51d04..7c31163a75a2 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestSceneBeatmapSelectGrid.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestSceneBeatmapSelectGrid.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestSceneMatchmakingChatDisplay.cs b/osu.Game.Tests/Visual/Matchmaking/TestSceneMatchmakingChatDisplay.cs
index b22c4dd74ac5..f61117fd9da2 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestSceneMatchmakingChatDisplay.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestSceneMatchmakingChatDisplay.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestScenePlayerPanelOverlay.cs b/osu.Game.Tests/Visual/Matchmaking/TestScenePlayerPanelOverlay.cs
index f41416925115..dd7db2686c3a 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestScenePlayerPanelOverlay.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestScenePlayerPanelOverlay.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Online.Multiplayer.MatchTypes.Matchmaking;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestSceneRatingDistributionGraph.cs b/osu.Game.Tests/Visual/Matchmaking/TestSceneRatingDistributionGraph.cs
index 6f4d9aa9b7dc..38893fec9f19 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestSceneRatingDistributionGraph.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestSceneRatingDistributionGraph.cs
@@ -3,12 +3,12 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Queue;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestSceneResultsScreen.cs b/osu.Game.Tests/Visual/Matchmaking/TestSceneResultsScreen.cs
index f717849a2a37..f283f0757026 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestSceneResultsScreen.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestSceneResultsScreen.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
@@ -11,7 +12,6 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.Results;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Matchmaking/TestSceneRoundResultsScreen.cs b/osu.Game.Tests/Visual/Matchmaking/TestSceneRoundResultsScreen.cs
index d1800aca3f7e..5035a415f9fa 100644
--- a/osu.Game.Tests/Visual/Matchmaking/TestSceneRoundResultsScreen.cs
+++ b/osu.Game.Tests/Visual/Matchmaking/TestSceneRoundResultsScreen.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Screens;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.RoundResults;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Matchmaking
 {
diff --git a/osu.Game.Tests/Visual/Menus/IntroTestScene.cs b/osu.Game.Tests/Visual/Menus/IntroTestScene.cs
index 2b0717c1e3d5..416cff16356d 100644
--- a/osu.Game.Tests/Visual/Menus/IntroTestScene.cs
+++ b/osu.Game.Tests/Visual/Menus/IntroTestScene.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,8 +12,6 @@
 using osu.Game.Overlays;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Menus
 {
@@ -41,7 +40,7 @@ protected IntroTestScene()
                 {
                     RelativeSizeAxes = Axes.Both,
                     Depth = float.MaxValue,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
                 logo = new OsuLogo
                 {
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneLoader.cs b/osu.Game.Tests/Visual/Menus/TestSceneLoader.cs
index aac9614ddbbb..7068930ba8ab 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneLoader.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneLoader.cs
@@ -14,7 +14,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Menus
 {
@@ -99,7 +98,7 @@ public TestScreen()
                     InternalChild = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.DarkSlateGray,
+                        Colour = Colour4.DarkSlateGray,
                         Alpha = 0,
                     };
                 }
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneLoginOverlay.cs b/osu.Game.Tests/Visual/Menus/TestSceneLoginOverlay.cs
index 0dfe05504028..cefd87c5631f 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneLoginOverlay.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneLoginOverlay.cs
@@ -22,7 +22,7 @@
 using osu.Game.Tests.Visual.Online;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Menus
 {
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneMainMenu.cs b/osu.Game.Tests/Visual/Menus/TestSceneMainMenu.cs
index cd391519f4f0..d9f0177b9ad6 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneMainMenu.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneMainMenu.cs
@@ -12,7 +12,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.Menu;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Menus
 {
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneOnlineMenuBanner.cs b/osu.Game.Tests/Visual/Menus/TestSceneOnlineMenuBanner.cs
index 0b90fd13c3e7..75657f77ab7c 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneOnlineMenuBanner.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneOnlineMenuBanner.cs
@@ -3,13 +3,13 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.Menu;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Menus
 {
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneToolbar.cs b/osu.Game.Tests/Visual/Menus/TestSceneToolbar.cs
index a9dac301416d..d22decf60cb4 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneToolbar.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneToolbar.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using Moq;
 using NUnit.Framework;
@@ -20,9 +21,7 @@
 using osu.Game.Overlays.Notifications;
 using osu.Game.Overlays.Toolbar;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Menus
 {
@@ -155,7 +154,7 @@ public void TestScrollInput()
                 {
                     RelativeSizeAxes = Axes.X,
                     Height = DrawHeight * 2,
-                    Colour = ColourInfo.GradientVertical(Color4.Gray, Color4.DarkGray),
+                    Colour = ColourInfo.GradientVertical(Colour4.Gray, Colour4.DarkGray),
                 }
             }));
 
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneToolbarClock.cs b/osu.Game.Tests/Visual/Menus/TestSceneToolbarClock.cs
index f38ad5af1587..8f8b5d2980ee 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneToolbarClock.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneToolbarClock.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -12,8 +13,6 @@
 using osu.Framework.Timing;
 using osu.Game.Configuration;
 using osu.Game.Overlays.Toolbar;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Menus
 {
@@ -39,7 +38,7 @@ public TestSceneToolbarClock()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new FillFlowContainer
@@ -53,14 +52,14 @@ public TestSceneToolbarClock()
                             {
                                 new Box
                                 {
-                                    Colour = Color4.DarkRed,
+                                    Colour = Colour4.DarkRed,
                                     RelativeSizeAxes = Axes.Y,
                                     Width = 2,
                                 },
                                 toolbarClock = new ToolbarClock(),
                                 new Box
                                 {
-                                    Colour = Color4.DarkRed,
+                                    Colour = Colour4.DarkRed,
                                     RelativeSizeAxes = Axes.Y,
                                     Width = 2,
                                 },
diff --git a/osu.Game.Tests/Visual/Menus/TestSceneToolbarUserButton.cs b/osu.Game.Tests/Visual/Menus/TestSceneToolbarUserButton.cs
index 53d909406f98..e51ab4d0f86d 100644
--- a/osu.Game.Tests/Visual/Menus/TestSceneToolbarUserButton.cs
+++ b/osu.Game.Tests/Visual/Menus/TestSceneToolbarUserButton.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,8 +14,6 @@
 using osu.Game.Overlays.Toolbar;
 using osu.Game.Scoring;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Menus
 {
@@ -39,7 +38,7 @@ public TestSceneToolbarUserButton()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new FillFlowContainer
@@ -53,14 +52,14 @@ public TestSceneToolbarUserButton()
                             {
                                 new Box
                                 {
-                                    Colour = Color4.DarkRed,
+                                    Colour = Colour4.DarkRed,
                                     RelativeSizeAxes = Axes.Y,
                                     Width = 2,
                                 },
                                 new ToolbarUserButton(),
                                 new Box
                                 {
-                                    Colour = Color4.DarkRed,
+                                    Colour = Colour4.DarkRed,
                                     RelativeSizeAxes = Axes.Y,
                                     Width = 2,
                                 },
diff --git a/osu.Game.Tests/Visual/Mods/TestSceneModAccuracyChallenge.cs b/osu.Game.Tests/Visual/Mods/TestSceneModAccuracyChallenge.cs
index e1c15863ad25..447e7f67f6bd 100644
--- a/osu.Game.Tests/Visual/Mods/TestSceneModAccuracyChallenge.cs
+++ b/osu.Game.Tests/Visual/Mods/TestSceneModAccuracyChallenge.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Mods
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/QueueModeTestScene.cs b/osu.Game.Tests/Visual/Multiplayer/QueueModeTestScene.cs
index b10be77fb654..f12e330f8ffe 100644
--- a/osu.Game.Tests/Visual/Multiplayer/QueueModeTestScene.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/QueueModeTestScene.cs
@@ -25,7 +25,7 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match;
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableLoungeRoom.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableLoungeRoom.cs
index ea2be1c06653..7fbe3d1a1901 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableLoungeRoom.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableLoungeRoom.cs
@@ -17,7 +17,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Lounge;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableRoomPlaylist.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableRoomPlaylist.cs
index 28780fdfd2e4..9c43fb761eff 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableRoomPlaylist.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableRoomPlaylist.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -31,8 +32,7 @@
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneFreeModSelectOverlay.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneFreeModSelectOverlay.cs
index 65b3af50f336..eb034a719741 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneFreeModSelectOverlay.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneFreeModSelectOverlay.cs
@@ -17,7 +17,6 @@
 using osu.Game.Screens.Footer;
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Utils;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneGameplayChatDisplay.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneGameplayChatDisplay.cs
index 235d14282079..75e85a839a58 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneGameplayChatDisplay.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneGameplayChatDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Screens.Play;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneHostOnlyQueueMode.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneHostOnlyQueueMode.cs
index a1ced5698e15..961f2293a97e 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneHostOnlyQueueMode.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneHostOnlyQueueMode.cs
@@ -13,7 +13,7 @@
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchLeaderboard.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchLeaderboard.cs
index 39ad21d0b068..399f9431443b 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchLeaderboard.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchLeaderboard.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Match.Components;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Multiplayer
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchStartControl.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchStartControl.cs
index 4e2c3f81dac6..bf2d6b30aab3 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchStartControl.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMatchStartControl.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using Moq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -21,8 +22,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiSpectatorScreen.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiSpectatorScreen.cs
index e46d66582d09..b080aacb2da7 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiSpectatorScreen.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiSpectatorScreen.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -27,9 +28,7 @@
 using osu.Game.Screens.Play.PlayerSettings;
 using osu.Game.Storyboards;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
@@ -458,7 +457,7 @@ public void TestPlayersLeaveWhileSpectating()
                 int id = PLAYER_1_ID + count;
 
                 end(id);
-                AddUntilStep($"{id} area grayed", () => getInstance(id).Colour != Color4.White);
+                AddUntilStep($"{id} area grayed", () => getInstance(id).Colour != Colour4.White);
                 AddUntilStep($"{id} score quit set", () => getLeaderboardScore(id).HasQuit.Value);
                 sendFrames(getPlayerIds(count), 300);
             }
@@ -471,7 +470,7 @@ public void TestPlayersLeaveWhileSpectating()
             sendFrames(PLAYER_1_ID, 300);
 
             AddAssert($"{PLAYER_1_ID} player instance still same", () => getInstance(PLAYER_1_ID).ChildrenOfType<Player>().Single() == player);
-            AddAssert($"{PLAYER_1_ID} area still grayed", () => getInstance(PLAYER_1_ID).Colour != Color4.White);
+            AddAssert($"{PLAYER_1_ID} area still grayed", () => getInstance(PLAYER_1_ID).Colour != Colour4.White);
             AddAssert($"{PLAYER_1_ID} score quit still set", () => getLeaderboardScore(PLAYER_1_ID).HasQuit.Value);
         }
 
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayer.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayer.cs
index c6a12bea65fa..f46123f35bb7 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayer.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayer.cs
@@ -44,7 +44,6 @@
 using osu.Game.Screens.Ranking;
 using osu.Game.Screens.Spectate;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
 using ReadyButton = osu.Game.Screens.OnlinePlay.Components.ReadyButton;
 
 namespace osu.Game.Tests.Visual.Multiplayer
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerLoungeSubScreen.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerLoungeSubScreen.cs
index f1915233e05c..1e5eb293f93d 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerLoungeSubScreen.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerLoungeSubScreen.cs
@@ -12,7 +12,7 @@
 using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSongSelect.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSongSelect.cs
index 42d1a0c4b982..b284d1f9d6bc 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSongSelect.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSongSelect.cs
@@ -28,7 +28,7 @@
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSubScreen.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSubScreen.cs
index 7a72178645ad..874faaac1e8e 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSubScreen.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerMatchSubScreen.cs
@@ -39,7 +39,7 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer.Participants;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerParticipantsList.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerParticipantsList.cs
index 8aaf85923c90..cc3d1a6a5c66 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerParticipantsList.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerParticipantsList.cs
@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -25,8 +26,7 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer.Participants;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerPlaylist.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerPlaylist.cs
index 44177c080c68..5345ae32bd92 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerPlaylist.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerPlaylist.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -22,7 +23,6 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
@@ -239,7 +239,7 @@ private void assertItemInQueueListStep(int playlistItemId, int visualIndex)
                        && this.ChildrenOfType<MultiplayerQueueList>()
                               .Single()
                               .ChildrenOfType<DrawableRoomPlaylistItem>()
-                              .OrderBy(drawable => drawable.Position.Y)
+                              .OrderBy(drawable => drawable.Item.PlaylistOrder)
                               .TakeWhile(drawable => drawable.Item.ID != playlistItemId)
                               .Count() == visualIndex;
             });
@@ -260,7 +260,7 @@ private void assertItemInHistoryListStep(int playlistItemId, int visualIndex)
                        && this.ChildrenOfType<MultiplayerHistoryList>()
                               .Single()
                               .ChildrenOfType<DrawableRoomPlaylistItem>()
-                              .OrderBy(drawable => drawable.Position.Y)
+                              .OrderByDescending(drawable => drawable.Item.PlayedAt)
                               .TakeWhile(drawable => drawable.Item.ID != playlistItemId)
                               .Count() == visualIndex;
             });
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerQueueList.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerQueueList.cs
index 68f06d9f7474..309dc0b4a39c 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerQueueList.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerQueueList.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -20,7 +21,6 @@
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectateButton.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectateButton.cs
index fe9ea632cf7b..3c42427d66a7 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectateButton.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectateButton.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -22,7 +23,6 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectatorPlayerGrid.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectatorPlayerGrid.cs
index 2f461ad7067e..5c5788b2d3fe 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectatorPlayerGrid.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerSpectatorPlayerGrid.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Spectate;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
@@ -108,7 +107,7 @@ private partial class GridContent : Box
             public GridContent()
             {
                 RelativeSizeAxes = Axes.Both;
-                Colour = new Color4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1f);
+                Colour = new Colour4(RNG.NextSingle(), RNG.NextSingle(), RNG.NextSingle(), 1f);
             }
         }
     }
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerTeamResults.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerTeamResults.cs
index f77b6e8c68cd..1d0306cd444c 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerTeamResults.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerTeamResults.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsRoomSettingsPlaylist.cs b/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsRoomSettingsPlaylist.cs
index cd41884ba70c..ff89aa505aab 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsRoomSettingsPlaylist.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsRoomSettingsPlaylist.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -19,8 +20,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsSongSelect.cs b/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsSongSelect.cs
index 5810b85b2cad..f86882690699 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsSongSelect.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsSongSelect.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -23,7 +22,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomListing.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomListing.cs
index 85dfdd9af952..597bf6c884af 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomListing.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomListing.cs
@@ -14,7 +14,7 @@
 using osu.Game.Screens.OnlinePlay.Lounge;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomPanel.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomPanel.cs
index aa9dddae4dd8..6665c80a67f9 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomPanel.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneRoomPanel.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -21,7 +22,6 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneStarRatingRangeDisplay.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneStarRatingRangeDisplay.cs
index 3a941e0ed36a..3bf5f97cf572 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneStarRatingRangeDisplay.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneStarRatingRangeDisplay.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -11,7 +12,6 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Multiplayer/TestSceneTeamVersus.cs b/osu.Game.Tests/Visual/Multiplayer/TestSceneTeamVersus.cs
index e389d1923373..c85036513bc7 100644
--- a/osu.Game.Tests/Visual/Multiplayer/TestSceneTeamVersus.cs
+++ b/osu.Game.Tests/Visual/Multiplayer/TestSceneTeamVersus.cs
@@ -22,7 +22,7 @@
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Participants;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneBeatmapEditorNavigation.cs b/osu.Game.Tests/Visual/Navigation/TestSceneBeatmapEditorNavigation.cs
index 6e5b19daff1a..c947b0ddba78 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneBeatmapEditorNavigation.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneBeatmapEditorNavigation.cs
@@ -29,7 +29,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneButtonSystemNavigation.cs b/osu.Game.Tests/Visual/Navigation/TestSceneButtonSystemNavigation.cs
index a908c9cf1bf6..57136cf18eb8 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneButtonSystemNavigation.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneButtonSystemNavigation.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Testing;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Select;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneChangeAndUseGameplayBindings.cs b/osu.Game.Tests/Visual/Navigation/TestSceneChangeAndUseGameplayBindings.cs
index 6ddd78432910..89c8e1aec39e 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneChangeAndUseGameplayBindings.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneChangeAndUseGameplayBindings.cs
@@ -17,7 +17,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneMouseWheelVolumeAdjust.cs b/osu.Game.Tests/Visual/Navigation/TestSceneMouseWheelVolumeAdjust.cs
index d3321753c1ab..42dffba30bf6 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneMouseWheelVolumeAdjust.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneMouseWheelVolumeAdjust.cs
@@ -7,7 +7,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneOsuGame.cs b/osu.Game.Tests/Visual/Navigation/TestSceneOsuGame.cs
index a0026fb3d0c1..9f09b1e787b1 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneOsuGame.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneOsuGame.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -23,8 +24,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Menu;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestScenePerformFromScreen.cs b/osu.Game.Tests/Visual/Navigation/TestScenePerformFromScreen.cs
index f86727ab10ee..7e9d67fbb31e 100644
--- a/osu.Game.Tests/Visual/Navigation/TestScenePerformFromScreen.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestScenePerformFromScreen.cs
@@ -19,7 +19,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneScreenNavigation.cs b/osu.Game.Tests/Visual/Navigation/TestSceneScreenNavigation.cs
index c1ea312d816e..32a981801070 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneScreenNavigation.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneScreenNavigation.cs
@@ -6,6 +6,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using System.Numerics;
 using Newtonsoft.Json.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -55,8 +56,6 @@
 using osu.Game.Tests.Beatmaps.IO;
 using osu.Game.Tests.Resources;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Input;
 using CollectionDropdown = osu.Game.Screens.Select.CollectionDropdown;
 
 namespace osu.Game.Tests.Visual.Navigation
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneSkinEditorNavigation.cs b/osu.Game.Tests/Visual/Navigation/TestSceneSkinEditorNavigation.cs
index 7fc1060d01a3..cd67e2c5b879 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneSkinEditorNavigation.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneSkinEditorNavigation.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using Newtonsoft.Json;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -30,8 +31,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Skinning;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Navigation/TestSceneSongSelectNavigation.cs b/osu.Game.Tests/Visual/Navigation/TestSceneSongSelectNavigation.cs
index 7513ea992ae7..d468b23b4039 100644
--- a/osu.Game.Tests/Visual/Navigation/TestSceneSongSelectNavigation.cs
+++ b/osu.Game.Tests/Visual/Navigation/TestSceneSongSelectNavigation.cs
@@ -27,7 +27,7 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Beatmaps.IO;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Navigation
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneAdvancedStats.cs b/osu.Game.Tests/Visual/Online/TestSceneAdvancedStats.cs
index a5591e1be0da..f73fe8730f38 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneAdvancedStats.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneAdvancedStats.cs
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -169,7 +169,7 @@ public void TestChangedDifficultyAdjustMod()
             AddAssert("approach rate bar is red", () => barIsRed(advancedStats.GetStatistic(SongSelectStrings.ApproachRate)));
         }
 
-        private bool barIsWhite(AdvancedStats.StatisticRow row) => row.ModBar.AccentColour == Color4.White;
+        private bool barIsWhite(AdvancedStats.StatisticRow row) => row.ModBar.AccentColour == Colour4.White;
         private bool barIsBlue(AdvancedStats.StatisticRow row) => row.ModBar.AccentColour == colours.BlueDark;
         private bool barIsRed(AdvancedStats.StatisticRow row) => row.ModBar.AccentColour == colours.Red;
 
diff --git a/osu.Game.Tests/Visual/Online/TestSceneBeatmapDownloadButton.cs b/osu.Game.Tests/Visual/Online/TestSceneBeatmapDownloadButton.cs
index 40e34a52b6ef..7e3ec438380b 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneBeatmapDownloadButton.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneBeatmapDownloadButton.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,7 +13,6 @@
 using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneBeatmapListingOverlay.cs b/osu.Game.Tests/Visual/Online/TestSceneBeatmapListingOverlay.cs
index c3766a19b74d..3036a0d8d149 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneBeatmapListingOverlay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneBeatmapListingOverlay.cs
@@ -3,7 +3,6 @@
 
 #nullable disable
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
@@ -20,7 +19,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
 using osu.Game.Scoring;
-using osuTK.Input;
+using osu.Framework.Input;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Online
diff --git a/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlaySuccessRate.cs b/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlaySuccessRate.cs
index 7f88f1ebd1c3..4bd0c4ca7a15 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlaySuccessRate.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlaySuccessRate.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -16,8 +17,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapSet;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -41,7 +40,7 @@ public void Setup() => Schedule(() =>
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                     },
                     successRate = new GraphExposingSuccessRate
                     {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneChannelListing.cs b/osu.Game.Tests/Visual/Online/TestSceneChannelListing.cs
index 2d2d7fc0ffb2..3fcb0009f399 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneChannelListing.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneChannelListing.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Online.Chat;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Chat.Listing;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneChatLink.cs b/osu.Game.Tests/Visual/Online/TestSceneChatLink.cs
index e7337769fd72..dc1a8f0a0025 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneChatLink.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneChatLink.cs
@@ -13,7 +13,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.Chat;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -21,7 +20,7 @@ namespace osu.Game.Tests.Visual.Online
     public partial class TestSceneChatLink : OsuTestScene
     {
         private readonly TestChatLineContainer textContainer;
-        private Color4 linkColour;
+        private Colour4 linkColour;
 
         public TestSceneChatLink()
         {
@@ -118,7 +117,7 @@ bool isShowingLinks()
             {
                 bool hasBackground = !string.IsNullOrEmpty(newLine.Message.Sender.Colour);
 
-                Color4 textColour = isAction && hasBackground ? Color4Extensions.FromHex(newLine.Message.Sender.Colour) : Color4.White;
+                Colour4 textColour = isAction && hasBackground ? Color4Extensions.FromHex(newLine.Message.Sender.Colour) : Colour4.White;
 
                 var linkCompilers = newLine.DrawableContentFlow.Where(d => d is DrawableLinkCompiler).ToList();
                 var linkSprites = linkCompilers.SelectMany(comp => ((DrawableLinkCompiler)comp).Parts);
diff --git a/osu.Game.Tests/Visual/Online/TestSceneChatOverlay.cs b/osu.Game.Tests/Visual/Online/TestSceneChatOverlay.cs
index ee8b6b738eff..aeab414fa8e8 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneChatOverlay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneChatOverlay.cs
@@ -9,6 +9,7 @@
 using System.Net;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -31,8 +32,6 @@
 using osu.Game.Overlays.Chat.ChannelList;
 using osu.Game.Overlays.Chat.Listing;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneClickableTeamFlag.cs b/osu.Game.Tests/Visual/Online/TestSceneClickableTeamFlag.cs
index 525cc9758153..b00af1094481 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneClickableTeamFlag.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneClickableTeamFlag.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -9,7 +10,6 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneCommentActions.cs b/osu.Game.Tests/Visual/Online/TestSceneCommentActions.cs
index 56b161db2a2a..b73df58448a3 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneCommentActions.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneCommentActions.cs
@@ -24,7 +24,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Comments;
 using osu.Game.Overlays.Comments.Buttons;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneCommentReportButton.cs b/osu.Game.Tests/Visual/Online/TestSceneCommentReportButton.cs
index d2e73b8673aa..b0f588856325 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneCommentReportButton.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneCommentReportButton.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
@@ -10,7 +11,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Comments;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneExternalLinkButton.cs b/osu.Game.Tests/Visual/Online/TestSceneExternalLinkButton.cs
index 84f245afb690..c349d7143699 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneExternalLinkButton.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneExternalLinkButton.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneFavouriteButton.cs b/osu.Game.Tests/Visual/Online/TestSceneFavouriteButton.cs
index 0acf8336e3f1..8368d1f99501 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneFavouriteButton.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneFavouriteButton.cs
@@ -3,13 +3,13 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapSet.Buttons;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneFullscreenOverlay.cs b/osu.Game.Tests/Visual/Online/TestSceneFullscreenOverlay.cs
index 16d31c916e71..87d132e43951 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneFullscreenOverlay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneFullscreenOverlay.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -49,7 +48,7 @@ public TestFullscreenOverlay()
                 {
                     new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                 };
diff --git a/osu.Game.Tests/Visual/Online/TestSceneGlobalRankDisplay.cs b/osu.Game.Tests/Visual/Online/TestSceneGlobalRankDisplay.cs
index beabf6711c0d..cee84f656db5 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneGlobalRankDisplay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneGlobalRankDisplay.cs
@@ -3,13 +3,13 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Tests.Visual.UserInterface;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneGraph.cs b/osu.Game.Tests/Visual/Online/TestSceneGraph.cs
index bbc335909282..c2c3da81cd05 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneGraph.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneGraph.cs
@@ -1,12 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneGroupBadges.cs b/osu.Game.Tests/Visual/Online/TestSceneGroupBadges.cs
index cbf9c33b7885..4816181e601a 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneGroupBadges.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneGroupBadges.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneHomeNewsPanel.cs b/osu.Game.Tests/Visual/Online/TestSceneHomeNewsPanel.cs
index 4ecdcc97d1a6..032b6daa537a 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneHomeNewsPanel.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneHomeNewsPanel.cs
@@ -3,13 +3,13 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Dashboard.Home.News;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneLevelBadge.cs b/osu.Game.Tests/Visual/Online/TestSceneLevelBadge.cs
index 1fd54ca50f36..b9a2f8cdfa59 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneLevelBadge.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneLevelBadge.cs
@@ -3,12 +3,12 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneMessageNotifier.cs b/osu.Game.Tests/Visual/Online/TestSceneMessageNotifier.cs
index 274d7f0c515e..c5afd607e49e 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneMessageNotifier.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneMessageNotifier.cs
@@ -18,7 +18,7 @@
 using osu.Game.Online.Chat;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
-using osuTK.Input;
+using osu.Framework.Input;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Online
diff --git a/osu.Game.Tests/Visual/Online/TestSceneNewsCard.cs b/osu.Game.Tests/Visual/Online/TestSceneNewsCard.cs
index 86efb4b6f8c2..6a6da54a349a 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneNewsCard.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneNewsCard.cs
@@ -2,13 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.News;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneOnlineUserPanel.cs b/osu.Game.Tests/Visual/Online/TestSceneOnlineUserPanel.cs
index b1e5ef95db8f..d23d72af5451 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneOnlineUserPanel.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneOnlineUserPanel.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Rulesets;
 using osu.Game.Tests.Visual.Metadata;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneOnlineViewContainer.cs b/osu.Game.Tests/Visual/Online/TestSceneOnlineViewContainer.cs
index df29b33f1747..e29ed6a1440b 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneOnlineViewContainer.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneOnlineViewContainer.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using NUnit.Framework;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -11,7 +10,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online;
 using osu.Game.Online.API;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -81,7 +79,7 @@ public TestOnlineViewContainer()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Blue.Opacity(0.8f),
+                        Colour = Colour4.Blue.Opacity(0.8f),
                     },
                     new OsuSpriteText
                     {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneRankGraph.cs b/osu.Game.Tests/Visual/Online/TestSceneRankGraph.cs
index 55817e38a6a4..859eea0712d2 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneRankGraph.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneRankGraph.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneRankingsCountryFilter.cs b/osu.Game.Tests/Visual/Online/TestSceneRankingsCountryFilter.cs
index 0309903f8fc1..ddcfef07251c 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneRankingsCountryFilter.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneRankingsCountryFilter.cs
@@ -10,7 +10,6 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Rankings;
 using osu.Game.Users;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -28,7 +27,7 @@ public TestSceneRankingsCountryFilter()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Gray,
+                    Colour = Colour4.Gray,
                 },
                 new FillFlowContainer
                 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneScoresContainer.cs b/osu.Game.Tests/Visual/Online/TestSceneScoresContainer.cs
index ad0c5f924708..2a6d6cfee834 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneScoresContainer.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneScoresContainer.cs
@@ -23,7 +23,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Users;
-using osuTK.Graphics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Online
@@ -49,7 +48,7 @@ public void SetUp() => Schedule(() =>
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     },
                     scoresContainer = new TestScoresContainer
                     {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneStandAloneChatDisplay.cs b/osu.Game.Tests/Visual/Online/TestSceneStandAloneChatDisplay.cs
index 1e12cef7b3a8..fda2f92dd64e 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneStandAloneChatDisplay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneStandAloneChatDisplay.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,8 +16,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.Chat;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneUserClickableAvatar.cs b/osu.Game.Tests/Visual/Online/TestSceneUserClickableAvatar.cs
index 3333eae56731..4dba2243068a 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneUserClickableAvatar.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneUserClickableAvatar.cs
@@ -2,8 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -13,8 +13,6 @@
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -76,7 +74,7 @@ private Drawable generateUser(string username, int id, CountryCode countryCode,
                 {
                     Type = EdgeEffectType.Shadow,
                     Radius = 1,
-                    Colour = Color4.Black.Opacity(0.2f),
+                    Colour = Colour4.Black.Opacity(0.2f),
                 },
             };
         }
diff --git a/osu.Game.Tests/Visual/Online/TestSceneUserPanel.cs b/osu.Game.Tests/Visual/Online/TestSceneUserPanel.cs
index 896bda364a84..ac26108a7f6a 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneUserPanel.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneUserPanel.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -17,7 +18,6 @@
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual.Metadata;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneUserProfileDailyChallenge.cs b/osu.Game.Tests/Visual/Online/TestSceneUserProfileDailyChallenge.cs
index 2be9c1ab1419..b8080146c6cf 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneUserProfileDailyChallenge.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneUserProfileDailyChallenge.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -14,7 +15,6 @@
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Scoring;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneUserProfileMatchmakingStatsDisplay.cs b/osu.Game.Tests/Visual/Online/TestSceneUserProfileMatchmakingStatsDisplay.cs
index 78439d978efc..c7fd04beb6ce 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneUserProfileMatchmakingStatsDisplay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneUserProfileMatchmakingStatsDisplay.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -11,7 +12,6 @@
 using osu.Game.Overlays.Profile;
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Rulesets.Osu;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneUserProfileScores.cs b/osu.Game.Tests/Visual/Online/TestSceneUserProfileScores.cs
index 7cb5b4fbf541..758275e5e5e1 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneUserProfileScores.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneUserProfileScores.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +13,6 @@
 using osu.Game.Overlays.Profile.Sections.Ranks;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Scoring;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs b/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
index 434b2925b6ce..8841ac9443c1 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
@@ -18,7 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Wiki.Markdown;
 using osu.Game.Users.Drawables;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Online
 {
diff --git a/osu.Game.Tests/Visual/Playlists/TestSceneAddPlaylistToCollectionButton.cs b/osu.Game.Tests/Visual/Playlists/TestSceneAddPlaylistToCollectionButton.cs
index 7a11581d2760..6896e3463fb4 100644
--- a/osu.Game.Tests/Visual/Playlists/TestSceneAddPlaylistToCollectionButton.cs
+++ b/osu.Game.Tests/Visual/Playlists/TestSceneAddPlaylistToCollectionButton.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -19,8 +20,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.OnlinePlay.Playlists;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Playlists
 {
diff --git a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsLoungeSubScreen.cs b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsLoungeSubScreen.cs
index f2eeb5363abf..70c8e49e5399 100644
--- a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsLoungeSubScreen.cs
+++ b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsLoungeSubScreen.cs
@@ -10,7 +10,7 @@
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Playlists
 {
diff --git a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomCreation.cs b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomCreation.cs
index 44c2e7eb55fd..6503399c5e54 100644
--- a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomCreation.cs
+++ b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomCreation.cs
@@ -27,7 +27,7 @@
 using osu.Game.Screens.Play;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Playlists
 {
diff --git a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomSubScreen.cs b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomSubScreen.cs
index a3f6fa6671df..44297b11dd64 100644
--- a/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomSubScreen.cs
+++ b/osu.Game.Tests/Visual/Playlists/TestScenePlaylistsRoomSubScreen.cs
@@ -34,7 +34,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.OnlinePlay;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Playlists
 {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneHandReplay.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneHandReplay.cs
index ceccf6c340bd..170c3412900a 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneHandReplay.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneHandReplay.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -15,7 +16,6 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
 using osu.Game.Tests.Visual.Multiplayer;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestScenePickScreen.cs b/osu.Game.Tests/Visual/RankedPlay/TestScenePickScreen.cs
index eb5c187f95a4..4317d0a5c3ec 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestScenePickScreen.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestScenePickScreen.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestScenePlayerCardHand.cs b/osu.Game.Tests/Visual/RankedPlay/TestScenePlayerCardHand.cs
index f421792fe2e9..789f4b1e0af0 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestScenePlayerCardHand.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestScenePlayerCardHand.cs
@@ -11,7 +11,7 @@
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBackground.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBackground.cs
index 977de75a3c83..f7afc9764aab 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBackground.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBackground.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBottomOrnament.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBottomOrnament.cs
index 78bd992ea908..4506a8d16821 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBottomOrnament.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayBottomOrnament.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Screens.OnlinePlay.Matchmaking;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
@@ -27,7 +26,7 @@ public TestSceneRankedPlayBottomOrnament()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                     },
                     ornament = new TestOrnament(),
                 }
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayCard.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayCard.cs
index a1a449b70367..929e5366f105 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayCard.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayCard.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -18,7 +19,6 @@
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
@@ -108,7 +108,9 @@ public void TestCards()
                         Retries = Enumerable.Range(-2, 100).Select(x => x % 12 - 6).ToArray(),
                     };
 
-                    beatmap.StarRating = i + 1;
+                    // the .009 part exercises behaviour of truncating star rating to 2dp
+                    // it should be discarded completely on display
+                    beatmap.StarRating = i + 1.009;
 
                     flow.Add(new RankedPlayCardContent(beatmap)
                     {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayScreen.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayScreen.cs
index 7de250327dfe..0a6b919dec67 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayScreen.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayScreen.cs
@@ -15,7 +15,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
@@ -60,7 +60,7 @@ public void TestDiscardCardsStage()
 
             AddStep("set discard phase", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.CardDiscard).WaitSafely());
 
-            AddWaitStep("wait", 3);
+            AddUntilStep("wait until cards are present", () => this.ChildrenOfType<PlayerHandOfCards.PlayerHandCard>().Count() == 5);
 
             for (int i = 0; i < 3; i++)
             {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayStageOverlay.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayStageOverlay.cs
index 124964710b4d..11f79d7fb7cb 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayStageOverlay.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayStageOverlay.cs
@@ -40,9 +40,6 @@ public override void SetUpSteps()
         [Test]
         public void TestBasic()
         {
-            double multiplier = 1.0;
-
-            AddSliderStep<double>("set multiplier", 1, 5, 2, value => multiplier = value);
             AddStep("create", () => Child = new RankedPlayStageOverlay("Pick Phase", RankedPlayColourScheme.BLUE)
             {
                 PickingUser = new APIUser
@@ -50,7 +47,6 @@ public void TestBasic()
                     Id = 2,
                     Username = "peppy",
                 },
-                Multiplier = multiplier,
             });
         }
 
@@ -64,7 +60,6 @@ public void TestLongUsername()
                     Id = 226597,
                     Username = "WWWWWWWWWWWWWWWWWWWW",
                 },
-                Multiplier = 2,
             });
         }
 
@@ -78,7 +73,6 @@ public void TestColourScheme()
                     Id = 2,
                     Username = "peppy",
                 },
-                Multiplier = 2,
             });
             AddStep("create red", () => Child = new RankedPlayStageOverlay("Pick Phase", RankedPlayColourScheme.RED)
             {
@@ -87,7 +81,6 @@ public void TestColourScheme()
                     Id = 2,
                     Username = "peppy",
                 },
-                Multiplier = 2,
             });
         }
     }
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayUserDisplay.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayUserDisplay.cs
index af94246d21f4..b27f158d79fc 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayUserDisplay.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneRankedPlayUserDisplay.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -10,7 +11,6 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components;
 using osu.Game.Tests.Visual.Multiplayer;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
@@ -80,5 +80,15 @@ public void TestBeatmapState()
             AddStep("set to importing", () => MultiplayerClient.ChangeBeatmapAvailability(BeatmapAvailability.Importing()));
             AddStep("set to available", () => MultiplayerClient.ChangeBeatmapAvailability(BeatmapAvailability.LocallyAvailable()));
         }
+
+        [Test]
+        public void TestLastStand()
+        {
+            AddStep("active last stand", () =>
+            {
+                health.Value = 1_000_000;
+                health.Value = 1;
+            });
+        }
     }
 }
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneResultsScreen.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneResultsScreen.cs
index 75d91d6543e2..e212f1a6d39c 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneResultsScreen.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneResultsScreen.cs
@@ -40,8 +40,7 @@ public override void SetUpSteps()
         }
 
         [Test]
-        [Explicit("Test exercises correct stopping of audio playback. Has no assertions, only useful when checked manually by a human.")]
-        public void TestAllSamplesStopOnExit()
+        public void TestBasic()
         {
             AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
             {
@@ -56,7 +55,7 @@ public void TestAllSamplesStopOnExit()
                             RawDamage = 123_456,
                             Damage = 123_456,
                             OldLife = 500_000,
-                            NewLife = 500_000 - 123_456,
+                            NewLife = 500_000 - 123_456
                         };
 
                         userInfo.Life = 500_000 - 123_456;
@@ -73,39 +72,45 @@ public void TestAllSamplesStopOnExit()
                     }
                 }
             }).WaitSafely());
-            AddWaitStep("wait for samples to start playing", 5);
-            AddRepeatStep("exit", () => screen.Exit(), 2);
         }
 
         [Test]
-        public void TestBasic()
+        public void TestMultiplier()
         {
             AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
             {
                 int losingPlayer = state.Users.Keys.First();
 
+                state.DamageMultiplier = 1.5;
+
                 foreach (var (id, userInfo) in state.Users)
                 {
                     if (id == losingPlayer)
                     {
+                        userInfo.DamageMultiplier = 0.5;
                         userInfo.DamageInfo = new RankedPlayDamageInfo
                         {
                             RawDamage = 123_456,
-                            Damage = 123_456,
-                            OldLife = 500_000,
-                            NewLife = 500_000 - 123_456,
+                            Damage = 123_456 * 2,
+                            OldLife = 1_000_000,
+                            NewLife = 1_000_000 - 123_456 * 2,
+                            Multiplier = 2,
+                            DirectDamage = 123_456,
                         };
 
-                        userInfo.Life = 500_000 - 123_456;
+                        userInfo.Life = 1_000_000 - 123_456 * 2;
                     }
                     else
                     {
+                        userInfo.DamageMultiplier = 0.5;
                         userInfo.DamageInfo = new RankedPlayDamageInfo
                         {
                             RawDamage = 0,
                             Damage = 0,
                             OldLife = 1_000_000,
                             NewLife = 1_000_000,
+                            Multiplier = 2,
+                            DirectDamage = 0,
                         };
                     }
                 }
@@ -113,8 +118,26 @@ public void TestBasic()
         }
 
         [Test]
-        public void TestMultiplier()
+        public void TestMissingScores()
         {
+            AddStep("setup request handler", () =>
+            {
+                Func<APIRequest, bool>? defaultRequestHandler = ((DummyAPIAccess)API).HandleRequest;
+
+                ((DummyAPIAccess)API).HandleRequest = request =>
+                {
+                    switch (request)
+                    {
+                        case IndexPlaylistScoresRequest index:
+                            index.TriggerSuccess(new IndexedMultiplayerScores());
+                            return true;
+
+                        default:
+                            return defaultRequestHandler?.Invoke(request) ?? false;
+                    }
+                };
+            });
+
             AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
             {
                 int losingPlayer = state.Users.Keys.First();
@@ -132,8 +155,6 @@ public void TestMultiplier()
                             OldLife = 1_000_000,
                             NewLife = 1_000_000 - 123_456 * 2,
                         };
-
-                        userInfo.Life = 1_000_000 - 123_456 * 2;
                     }
                     else
                     {
@@ -150,31 +171,87 @@ public void TestMultiplier()
         }
 
         [Test]
-        public void TestMissingScores()
+        [Explicit("Test exercises correct stopping of audio playback. Has no assertions, only useful when checked manually by a human.")]
+        public void TestAllSamplesStopOnExit()
         {
-            AddStep("setup request handler", () =>
+            AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
             {
-                Func<APIRequest, bool>? defaultRequestHandler = ((DummyAPIAccess)API).HandleRequest;
+                int losingPlayer = state.Users.Keys.First();
 
-                ((DummyAPIAccess)API).HandleRequest = request =>
+                foreach (var (id, userInfo) in state.Users)
                 {
-                    switch (request)
+                    if (id == losingPlayer)
                     {
-                        case IndexPlaylistScoresRequest index:
-                            index.TriggerSuccess(new IndexedMultiplayerScores());
-                            return true;
+                        userInfo.DamageInfo = new RankedPlayDamageInfo
+                        {
+                            RawDamage = 123_456,
+                            Damage = 123_456,
+                            OldLife = 500_000,
+                            NewLife = 500_000 - 123_456,
+                        };
 
-                        default:
-                            return defaultRequestHandler?.Invoke(request) ?? false;
+                        userInfo.Life = 500_000 - 123_456;
                     }
-                };
-            });
+                    else
+                    {
+                        userInfo.DamageInfo = new RankedPlayDamageInfo
+                        {
+                            RawDamage = 0,
+                            Damage = 0,
+                            OldLife = 1_000_000,
+                            NewLife = 1_000_000,
+                        };
+                    }
+                }
+            }).WaitSafely());
+            AddWaitStep("wait for samples to start playing", 5);
+            AddRepeatStep("exit", () => screen.Exit(), 2);
+        }
 
+        [Test]
+        public void TestDamageBreakdown()
+        {
             AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
             {
                 int losingPlayer = state.Users.Keys.First();
 
-                state.DamageMultiplier = 2;
+                foreach (var (id, userInfo) in state.Users)
+                {
+                    if (id == losingPlayer)
+                    {
+                        userInfo.DamageInfo = new RankedPlayDamageInfo
+                        {
+                            RawDamage = 600_000,
+                            Damage = 1_100_000,
+                            OldLife = 1_000_000,
+                            NewLife = 1,
+                            DirectDamage = 500_000,
+                            Multiplier = 2,
+                            BonusDamage = 100_000
+                        };
+
+                        userInfo.Life = 653_088;
+                    }
+                    else
+                    {
+                        userInfo.DamageInfo = new RankedPlayDamageInfo
+                        {
+                            RawDamage = 0,
+                            Damage = 0,
+                            OldLife = 1_000_000,
+                            NewLife = 1_000_000,
+                        };
+                    }
+                }
+            }).WaitSafely());
+        }
+
+        [Test]
+        public void TestDamageBreakdownWithNegativeValues()
+        {
+            AddStep("set results state", () => MultiplayerClient.RankedPlayChangeStage(RankedPlayStage.Results, state =>
+            {
+                int losingPlayer = state.Users.Keys.First();
 
                 foreach (var (id, userInfo) in state.Users)
                 {
@@ -182,11 +259,16 @@ public void TestMissingScores()
                     {
                         userInfo.DamageInfo = new RankedPlayDamageInfo
                         {
-                            RawDamage = 123_456,
-                            Damage = 123_456 * 2,
+                            RawDamage = 500_000,
+                            Damage = 200_000,
                             OldLife = 1_000_000,
-                            NewLife = 1_000_000 - 123_456 * 2,
+                            NewLife = 800_000,
+                            DirectDamage = 600_000,
+                            Multiplier = 0.5,
+                            BonusDamage = -100_000
                         };
+
+                        userInfo.Life = 653_088;
                     }
                     else
                     {
diff --git a/osu.Game.Tests/Visual/RankedPlay/TestSceneSongPreview.cs b/osu.Game.Tests/Visual/RankedPlay/TestSceneSongPreview.cs
index 8ee93ad9a103..2d4d08e30b98 100644
--- a/osu.Game.Tests/Visual/RankedPlay/TestSceneSongPreview.cs
+++ b/osu.Game.Tests/Visual/RankedPlay/TestSceneSongPreview.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.RankedPlay
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneAccuracyCircle.cs b/osu.Game.Tests/Visual/Ranking/TestSceneAccuracyCircle.cs
index 41a560306024..fa8c64c8b7fa 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneAccuracyCircle.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneAccuracyCircle.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -19,7 +20,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneCollectionButton.cs b/osu.Game.Tests/Visual/Ranking/TestSceneCollectionButton.cs
index 5b6721bc0fb2..d8fa8876afdb 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneCollectionButton.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneCollectionButton.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Screens.Ranking;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneContractedPanelMiddleContent.cs b/osu.Game.Tests/Visual/Ranking/TestSceneContractedPanelMiddleContent.cs
index 0f17b08b7bc1..6ac8a8a6b9a6 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneContractedPanelMiddleContent.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneContractedPanelMiddleContent.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -15,7 +16,6 @@
 using osu.Game.Screens.Ranking;
 using osu.Game.Screens.Ranking.Contracted;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneDrawableRank.cs b/osu.Game.Tests/Visual/Ranking/TestSceneDrawableRank.cs
index 804c8dfc44da..fb9102f37598 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneDrawableRank.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneDrawableRank.cs
@@ -3,12 +3,12 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.Leaderboards;
 using osu.Game.Scoring;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelMiddleContent.cs b/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelMiddleContent.cs
index df9dbf90eebe..6d5abb21cc33 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelMiddleContent.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelMiddleContent.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -26,7 +27,6 @@
 using osu.Game.Screens.Ranking.Expanded.Statistics;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelTopContent.cs b/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelTopContent.cs
index 27d66ea2a21f..37ea54a84fc5 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelTopContent.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneExpandedPanelTopContent.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Screens.Ranking.Expanded;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneGradedCircles.cs b/osu.Game.Tests/Visual/Ranking/TestSceneGradedCircles.cs
index 116386b4b5d5..b6801d397cca 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneGradedCircles.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneGradedCircles.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneHitEventTimingDistributionGraph.cs b/osu.Game.Tests/Visual/Ranking/TestSceneHitEventTimingDistributionGraph.cs
index bb4b785db0ae..cd3415a3bb27 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneHitEventTimingDistributionGraph.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneHitEventTimingDistributionGraph.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
@@ -13,7 +14,6 @@
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Ranking.Statistics;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneResultsScreen.cs b/osu.Game.Tests/Visual/Ranking/TestSceneResultsScreen.cs
index 6fe52acf9195..71c4e8f34271 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneResultsScreen.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneResultsScreen.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Linq;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -29,8 +30,7 @@
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 using Realms;
 
 namespace osu.Game.Tests.Visual.Ranking
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneScorePanelList.cs b/osu.Game.Tests/Visual/Ranking/TestSceneScorePanelList.cs
index f08a6c9eca76..69919f8b786c 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneScorePanelList.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneScorePanelList.cs
@@ -15,7 +15,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneStatisticsPanel.cs b/osu.Game.Tests/Visual/Ranking/TestSceneStatisticsPanel.cs
index ac410c76c19e..2a54b748d9b0 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneStatisticsPanel.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneStatisticsPanel.cs
@@ -7,6 +7,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -42,7 +43,6 @@
 using osu.Game.Screens.Ranking.Statistics.User;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Ranking/TestSceneUserTagControl.cs b/osu.Game.Tests/Visual/Ranking/TestSceneUserTagControl.cs
index 4f91e355c004..d70d6f6fd20c 100644
--- a/osu.Game.Tests/Visual/Ranking/TestSceneUserTagControl.cs
+++ b/osu.Game.Tests/Visual/Ranking/TestSceneUserTagControl.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -16,8 +17,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Screens.Ranking;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Ranking
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingConflictPopover.cs b/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingConflictPopover.cs
index 03f74fa35c8b..62081624c31b 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingConflictPopover.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingConflictPopover.cs
@@ -13,7 +13,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings.Sections.Input;
 using osu.Game.Rulesets.Osu;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs b/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs
index d077294dd510..b1b2a7d53035 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs
@@ -16,7 +16,7 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays.Settings.Sections.Input;
 using osu.Game.Rulesets.Taiko;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneLatencyCertifierScreen.cs b/osu.Game.Tests/Visual/Settings/TestSceneLatencyCertifierScreen.cs
index 84c153c15bde..61fb6d067caf 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneLatencyCertifierScreen.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneLatencyCertifierScreen.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Utility;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneRevertToDefaultButton.cs b/osu.Game.Tests/Visual/Settings/TestSceneRevertToDefaultButton.cs
index c29a847f4d2a..aa69e220c571 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneRevertToDefaultButton.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneRevertToDefaultButton.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -8,7 +9,6 @@
 using osu.Framework.Testing;
 using osu.Game.Overlays;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneSettingsItemV2.cs b/osu.Game.Tests/Visual/Settings/TestSceneSettingsItemV2.cs
index d460ea0078e7..325b9d7aaee9 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneSettingsItemV2.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneSettingsItemV2.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -20,7 +21,6 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneSettingsPanel.cs b/osu.Game.Tests/Visual/Settings/TestSceneSettingsPanel.cs
index df0fc8de5753..4546dbd15b13 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneSettingsPanel.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneSettingsPanel.cs
@@ -13,7 +13,7 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays.Settings.Sections;
 using osu.Game.Overlays.Settings.Sections.Input;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneSettingsSource.cs b/osu.Game.Tests/Visual/Settings/TestSceneSettingsSource.cs
index 9544f7794077..8907226d98d1 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneSettingsSource.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneSettingsSource.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -9,7 +10,6 @@
 using osu.Framework.Localisation;
 using osu.Game.Configuration;
 using osu.Game.Overlays.Settings;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/Settings/TestSceneTabletSettings.cs b/osu.Game.Tests/Visual/Settings/TestSceneTabletSettings.cs
index 194e4301c232..116aacdac6bb 100644
--- a/osu.Game.Tests/Visual/Settings/TestSceneTabletSettings.cs
+++ b/osu.Game.Tests/Visual/Settings/TestSceneTabletSettings.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -16,7 +17,6 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays.Settings.Sections.Input;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.Settings
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/BeatmapCarouselTestScene.cs b/osu.Game.Tests/Visual/SongSelect/BeatmapCarouselTestScene.cs
index ae31606abb7c..e784e5516500 100644
--- a/osu.Game.Tests/Visual/SongSelect/BeatmapCarouselTestScene.cs
+++ b/osu.Game.Tests/Visual/SongSelect/BeatmapCarouselTestScene.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -27,9 +28,7 @@
 using osu.Game.Screens.Select.Filter;
 using osu.Game.Tests.Beatmaps;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
@@ -113,7 +112,7 @@ protected void CreateCarousel(bool retainSelection = false)
                                 {
                                     Anchor = Anchor.Centre,
                                     Origin = Anchor.Centre,
-                                    Colour = Color4.Cyan,
+                                    Colour = Colour4.Cyan,
                                     RelativeSizeAxes = Axes.Both,
                                     Alpha = 0.4f,
                                 },
@@ -150,7 +149,7 @@ protected void CreateCarousel(bool retainSelection = false)
                                 {
                                     Anchor = Anchor.Centre,
                                     Origin = Anchor.Centre,
-                                    Colour = Color4.Cyan,
+                                    Colour = Colour4.Cyan,
                                     RelativeSizeAxes = Axes.Both,
                                     Alpha = 0.4f,
                                 },
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselArtistGrouping.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselArtistGrouping.cs
index a591dff01060..0ff5997f1553 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselArtistGrouping.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselArtistGrouping.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -10,7 +11,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselDifficultyGrouping.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselDifficultyGrouping.cs
index 4a41612c3037..8b8b609aad9f 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselDifficultyGrouping.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselDifficultyGrouping.cs
@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Graphics.Carousel;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselNoGrouping.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselNoGrouping.cs
index 1ff87712de5d..999640602d17 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselNoGrouping.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapCarouselNoGrouping.cs
@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Testing;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardScore.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardScore.cs
index 818e5c38687b..a77e3e165223 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardScore.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardScore.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -24,8 +25,7 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardWedge.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardWedge.cs
index 4d822805373c..23d860301c02 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardWedge.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapLeaderboardWedge.cs
@@ -29,7 +29,7 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs
index abd187491f1d..d50d2906b8d4 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs
@@ -27,7 +27,7 @@
 using osu.Game.Tests.Resources;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneCollectionDropdown.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneCollectionDropdown.cs
index e1c39ce4f24d..929842d679a5 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneCollectionDropdown.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneCollectionDropdown.cs
@@ -22,7 +22,7 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 using Realms;
 using CollectionDropdown = osu.Game.Screens.Select.CollectionDropdown;
 
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyRangeSlider.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyRangeSlider.cs
index ed7ade491474..662810b96b38 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyRangeSlider.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyRangeSlider.cs
@@ -1,16 +1,14 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Overlays;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
@@ -49,7 +47,7 @@ protected override void LoadComplete()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black.Opacity(0.5f),
+                    Colour = Colour4.Black.Opacity(0.5f),
                 },
                 new FilterControl.DifficultyRangeSlider
                 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyStatisticsDisplay.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyStatisticsDisplay.cs
index 10120bd2bc7f..3817733f6825 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyStatisticsDisplay.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneDifficultyStatisticsDisplay.cs
@@ -11,7 +11,6 @@
 using osu.Framework.Testing;
 using osu.Game.Overlays;
 using osu.Game.Screens.Select;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
@@ -39,7 +38,7 @@ public void SetUpSteps()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                         },
                         display = new BeatmapTitleWedge.DifficultyStatisticsDisplay
                         {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneManageCollectionsDialog.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneManageCollectionsDialog.cs
index c697fe6e886f..343c29656fe7 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneManageCollectionsDialog.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneManageCollectionsDialog.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -19,8 +20,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmap.cs b/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmap.cs
index c874028d1a70..a7c4cabb2afd 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmap.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmap.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -22,7 +23,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmapStandalone.cs b/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmapStandalone.cs
index 48c0fef48afd..281edcfbd825 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmapStandalone.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestScenePanelBeatmapStandalone.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -22,7 +23,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestScenePanelGroup.cs b/osu.Game.Tests/Visual/SongSelect/TestScenePanelGroup.cs
index 62c8a9c8c554..98b7ba4da862 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestScenePanelGroup.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestScenePanelGroup.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,7 +14,6 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestScenePanelSet.cs b/osu.Game.Tests/Visual/SongSelect/TestScenePanelSet.cs
index a903f8c83f73..f635ace06045 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestScenePanelSet.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestScenePanelSet.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
 using osu.Game.Tests.Visual.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelect.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelect.cs
index 14195517dd58..ebd48d562bb4 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelect.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelect.cs
@@ -26,7 +26,7 @@
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
 using osu.Game.Tests.Resources;
-using osuTK.Input;
+using osu.Framework.Input;
 using BeatmapCarousel = osu.Game.Screens.Select.BeatmapCarousel;
 using FooterButtonMods = osu.Game.Screens.Select.FooterButtonMods;
 using FooterButtonOptions = osu.Game.Screens.Select.FooterButtonOptions;
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectCurrentSelectionInvalidated.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectCurrentSelectionInvalidated.cs
index 59c9074ddb44..39e91af0c0a9 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectCurrentSelectionInvalidated.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectCurrentSelectionInvalidated.cs
@@ -10,7 +10,7 @@
 using osu.Game.Configuration;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.SongSelect
 {
diff --git a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectFiltering.cs b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectFiltering.cs
index cbada1fdba89..5491f2bc2966 100644
--- a/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectFiltering.cs
+++ b/osu.Game.Tests/Visual/SongSelect/TestSceneSongSelectFiltering.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
@@ -18,7 +17,6 @@
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
-using osuTK.Input;
 using FilterControl = osu.Game.Screens.Select.FilterControl;
 using NoResultsPlaceholder = osu.Game.Screens.Select.NoResultsPlaceholder;
 
diff --git a/osu.Game.Tests/Visual/TestSceneOsuScreenStack.cs b/osu.Game.Tests/Visual/TestSceneOsuScreenStack.cs
index 6b3971735418..ee663d7c500e 100644
--- a/osu.Game.Tests/Visual/TestSceneOsuScreenStack.cs
+++ b/osu.Game.Tests/Visual/TestSceneOsuScreenStack.cs
@@ -11,7 +11,6 @@
 using osu.Game.Overlays;
 using osu.Game.Screens;
 using osu.Game.Screens.Play;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual
 {
@@ -105,7 +104,7 @@ private void load()
                 AddInternal(new OsuSpriteText
                 {
                     Text = screenText,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                 });
diff --git a/osu.Game.Tests/Visual/TestSceneReplayStability.cs b/osu.Game.Tests/Visual/TestSceneReplayStability.cs
index 749493c4b1c1..f5b9518f0389 100644
--- a/osu.Game.Tests/Visual/TestSceneReplayStability.cs
+++ b/osu.Game.Tests/Visual/TestSceneReplayStability.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Replays;
 using osu.Game.Rulesets.Osu;
@@ -11,7 +12,6 @@
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
 
 namespace osu.Game.Tests.Visual
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneBackButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneBackButton.cs
index ba3f2f637c8c..1cf65115a0ca 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneBackButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneBackButton.cs
@@ -1,13 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Footer;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -31,7 +30,7 @@ public TestSceneBackButton()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.SlateGray
+                        Colour = Colour4.SlateGray
                     },
                     button = new BackButton(receptor)
                     {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatSyncedContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatSyncedContainer.cs
index c723610614aa..719f61dc2399 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatSyncedContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatSyncedContainer.cs
@@ -8,7 +8,6 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -20,7 +19,6 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Play;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -216,7 +214,7 @@ public TestBeatSyncedContainer()
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = Color4.Black.Opacity(150),
+                                Colour = Colour4.Black.Opacity(150),
                             },
                             new FillFlowContainer
                             {
@@ -251,12 +249,12 @@ public TestBeatSyncedContainer()
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = Color4.Black,
+                                Colour = Colour4.Black,
                             },
                             flashLayer = new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = Color4.White,
+                                Colour = Colour4.White,
                                 Alpha = 0,
                             }
                         }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSearchControl.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSearchControl.cs
index 0aae182db448..1b135936c417 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSearchControl.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSearchControl.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSortTabControl.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSortTabControl.cs
index 343378ccfbe5..58b8f928d538 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSortTabControl.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapListingSortTabControl.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,8 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapSearchFilter.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapSearchFilter.cs
index 5e22450ba882..07b00c1bb1ef 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapSearchFilter.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapSearchFilter.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -8,7 +9,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapListing;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneButtonSystem.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneButtonSystem.cs
index ba5cc56f3466..fe3fe273894f 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneButtonSystem.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneButtonSystem.cs
@@ -5,14 +5,13 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Screens.Menu;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -29,7 +28,7 @@ public void SetUp() => Schedule(() =>
             {
                 new Box
                 {
-                    Colour = ColourInfo.GradientVertical(Color4.Gray, Color4.WhiteSmoke),
+                    Colour = ColourInfo.GradientVertical(Colour4.Gray, Colour4.WhiteSmoke),
                     RelativeSizeAxes = Axes.Both,
                 },
                 buttons = new ButtonSystem(),
@@ -56,7 +55,7 @@ public void TestAllStates()
                 buttons.State = ButtonSystemState.Play;
                 buttons.FadeIn(MainMenu.FADE_IN_DURATION, Easing.OutQuint);
                 buttons.MoveTo(new Vector2(0), MainMenu.FADE_IN_DURATION, Easing.OutQuint);
-                logo.FadeColour(Color4.White, 100, Easing.OutQuint);
+                logo.FadeColour(Colour4.White, 100, Easing.OutQuint);
                 logo.FadeIn(100, Easing.OutQuint);
             });
         }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneButtonsInput.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneButtonsInput.cs
index e2ebe6f7a132..1c31c1217349 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneButtonsInput.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneButtonsInput.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,8 +13,6 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -51,7 +50,7 @@ public TestSceneButtonsInput()
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = Color4.Red
+                                Colour = Colour4.Red
                             },
                             new OsuSpriteText
                             {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneCommentEditor.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneCommentEditor.cs
index 721e23157708..94620c9474bf 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneCommentEditor.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneCommentEditor.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -15,8 +16,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Comments;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneCommentRepliesButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneCommentRepliesButton.cs
index 03dfffeaf185..832f98f6f480 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneCommentRepliesButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneCommentRepliesButton.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,7 +11,6 @@
 using osu.Framework.Testing;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Comments.Buttons;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneContextMenu.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneContextMenu.cs
index 118e37dab4d5..ba4de7d91c90 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneContextMenu.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneContextMenu.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -11,8 +12,6 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -39,7 +38,7 @@ public TestSceneContextMenu()
                         Child = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Green,
+                            Colour = Colour4.Green,
                         }
                     },
                     new AnotherContextMenuContainer
@@ -50,7 +49,7 @@ public TestSceneContextMenu()
                         Child = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Red,
+                            Colour = Colour4.Red,
                         }
                     }
                 }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneCursors.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneCursors.cs
index a8eaabe75807..a9cbe82ca2a1 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneCursors.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneCursors.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using NUnit.Framework;
@@ -11,9 +11,8 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -31,7 +30,7 @@ public TestSceneCursors()
                 Children = new[]
                 {
                     // Middle user
-                    cursorBoxes[0] = new CustomCursorBox(Color4.Green)
+                    cursorBoxes[0] = new CustomCursorBox(Colour4.Green)
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
@@ -39,13 +38,13 @@ public TestSceneCursors()
                         Size = new Vector2(0.5f),
                     },
                     // Top-left user
-                    cursorBoxes[1] = new CustomCursorBox(Color4.Blue)
+                    cursorBoxes[1] = new CustomCursorBox(Colour4.Blue)
                     {
                         RelativeSizeAxes = Axes.Both,
                         Size = new Vector2(0.4f)
                     },
                     // Bottom-right user
-                    cursorBoxes[2] = new CustomCursorBox(Color4.Red)
+                    cursorBoxes[2] = new CustomCursorBox(Colour4.Red)
                     {
                         Anchor = Anchor.BottomRight,
                         Origin = Anchor.BottomRight,
@@ -53,7 +52,7 @@ public TestSceneCursors()
                         Size = new Vector2(0.4f)
                     },
                     // Bottom-left local
-                    cursorBoxes[3] = new CustomCursorBox(Color4.Magenta, false)
+                    cursorBoxes[3] = new CustomCursorBox(Colour4.Magenta, false)
                     {
                         Anchor = Anchor.BottomLeft,
                         Origin = Anchor.BottomLeft,
@@ -61,7 +60,7 @@ public TestSceneCursors()
                         Size = new Vector2(0.4f)
                     },
                     // Top-right local
-                    cursorBoxes[4] = new CustomCursorBox(Color4.Cyan, false)
+                    cursorBoxes[4] = new CustomCursorBox(Colour4.Cyan, false)
                     {
                         Anchor = Anchor.TopRight,
                         Origin = Anchor.TopRight,
@@ -69,7 +68,7 @@ public TestSceneCursors()
                         Size = new Vector2(0.4f)
                     },
                     // Left-local
-                    cursorBoxes[5] = new CustomCursorBox(Color4.Yellow, false)
+                    cursorBoxes[5] = new CustomCursorBox(Colour4.Yellow, false)
                     {
                         Anchor = Anchor.CentreLeft,
                         Origin = Anchor.CentreLeft,
@@ -248,7 +247,7 @@ private partial class CustomCursorBox : Container, IProvideCursor
 
             private readonly Box background;
 
-            public CustomCursorBox(Color4 cursorColour, bool providesUserCursor = true)
+            public CustomCursorBox(Colour4 cursorColour, bool providesUserCursor = true)
             {
                 ProvidingUserCursor = providesUserCursor;
 
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneDeleteLocalScore.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneDeleteLocalScore.cs
index 33ab111a1057..2ffe62a51f88 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneDeleteLocalScore.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneDeleteLocalScore.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -24,8 +25,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Resources;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneDrawableDate.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneDrawableDate.cs
index e78b4d249664..69984e0ec5cb 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneDrawableDate.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneDrawableDate.cs
@@ -3,14 +3,13 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Testing;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -61,7 +60,7 @@ public PokeyDrawableDate(DateTimeOffset date)
                 {
                     flash = new Box
                     {
-                        Colour = Color4.Yellow,
+                        Colour = Colour4.Yellow,
                         Size = new Vector2(box_size),
                         Anchor = Anchor.CentreLeft,
                         Origin = Anchor.CentreLeft,
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneEditorSidebar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneEditorSidebar.cs
index 7d1b3a4bb7e4..b0f737b03f3e 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneEditorSidebar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneEditorSidebar.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -9,8 +10,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Components;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -53,7 +52,7 @@ public void TestSidebars()
                                                 Spacing = new Vector2(3),
                                                 ChildrenEnumerable = Enumerable.Range(0, 10).Select(_ => new Box
                                                 {
-                                                    Colour = Color4.White,
+                                                    Colour = Colour4.White,
                                                     Size = new Vector2(32),
                                                 })
                                             },
@@ -68,7 +67,7 @@ public void TestSidebars()
                                                 Spacing = new Vector2(3),
                                                 ChildrenEnumerable = Enumerable.Range(0, 400).Select(_ => new Box
                                                 {
-                                                    Colour = Color4.Gray,
+                                                    Colour = Colour4.Gray,
                                                     Size = new Vector2(32),
                                                 })
                                             },
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingBar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingBar.cs
index ed0fd340e7ea..53a9993fbdc1 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingBar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingBar.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -24,7 +23,7 @@ public TestSceneExpandingBar()
                 {
                     new Box
                     {
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                         Alpha = 0.5f,
                         RelativeSizeAxes = Axes.Both,
                     },
@@ -33,7 +32,7 @@ public TestSceneExpandingBar()
                         Anchor = Anchor.Centre,
                         ExpandedSize = 10,
                         CollapsedSize = 2,
-                        Colour = Color4.DeepSkyBlue,
+                        Colour = Colour4.DeepSkyBlue,
                     }
                 }
             });
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingContainer.cs
index db949c6754d9..99f04db88986 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneExpandingContainer.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -10,7 +11,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFPSCounter.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFPSCounter.cs
index f38fa05218ef..e27865667e9d 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFPSCounter.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFPSCounter.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -9,8 +10,6 @@
 using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -28,7 +27,7 @@ public void SetUpSteps()
                 {
                     new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                     },
                     new FillFlowContainer
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFirstRunSetupOverlay.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFirstRunSetupOverlay.cs
index 4a98e9ff1f5c..9d1a8d0f121a 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFirstRunSetupOverlay.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFirstRunSetupOverlay.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using Moq;
 using NUnit.Framework;
@@ -23,8 +24,7 @@
 using osu.Game.Overlays.Notifications;
 using osu.Game.Screens;
 using osu.Game.Tests.Beatmaps;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFormButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFormButton.cs
index a22607e78160..8849b9763500 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFormButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFormButton.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +13,6 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFormControls.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFormControls.cs
index 22b3753320ca..1fab8b900230 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFormControls.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFormControls.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Localisation;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Setup;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFormDropdown.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFormDropdown.cs
index 69d6057b9a68..51f36df474e0 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFormDropdown.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFormDropdown.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +13,6 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneFormSliderBar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneFormSliderBar.cs
index e7019aabe199..57f87423c45a 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneFormSliderBar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneFormSliderBar.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -13,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneGhostIcon.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneGhostIcon.cs
index 5ae46d02245e..712298cc72eb 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneGhostIcon.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneGhostIcon.cs
@@ -1,9 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Graphics;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneHistoryTextBox.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneHistoryTextBox.cs
index ed59572cabcd..3f9b9caabfb6 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneHistoryTextBox.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneHistoryTextBox.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneIconButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneIconButton.cs
index a1910570dd21..f8552bd081c2 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneIconButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneIconButton.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -8,8 +9,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -29,8 +28,8 @@ public TestSceneIconButton()
                     new NamedIconButton("Full-width", new IconButton { Size = new Vector2(200, 30) }),
                     new NamedIconButton("Icon colours", new IconButton
                     {
-                        IconColour = Color4.Green,
-                        IconHoverColour = Color4.Red
+                        IconColour = Colour4.Green,
+                        IconHoverColour = Colour4.Red
                     })
                 }
             };
@@ -40,8 +39,8 @@ private partial class ColouredIconButton : IconButton
         {
             public ColouredIconButton()
             {
-                FlashColour = Color4.DarkGreen;
-                HoverColour = Color4.Green;
+                FlashColour = Colour4.DarkGreen;
+                HoverColour = Colour4.Green;
             }
         }
 
@@ -58,7 +57,7 @@ public NamedIconButton(string name, IconButton button)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         Alpha = 0.5f,
                     },
                     new FillFlowContainer
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledColourPalette.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledColourPalette.cs
index 91a60009dc94..0af17c451bbe 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledColourPalette.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledColourPalette.cs
@@ -13,8 +13,7 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -93,7 +92,7 @@ private void createColourPalette(bool hasDescription = false)
             });
         }
 
-        private Colour4 randomColour() => new Color4(
+        private Colour4 randomColour() => new Colour4(
             RNG.NextSingle(),
             RNG.NextSingle(),
             RNG.NextSingle(),
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledDrawable.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledDrawable.cs
index 0dffc9da51d7..c9091fdd9fe5 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledDrawable.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneLabelledDrawable.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -12,8 +13,6 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -99,7 +98,7 @@ public PaddedLabelledDrawable()
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-                Colour = Color4.Red,
+                Colour = Colour4.Red,
                 Text = @"(( Component ))"
             };
         }
@@ -120,13 +119,13 @@ public NonPaddedLabelledDrawable()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.SlateGray
+                        Colour = Colour4.SlateGray
                     },
                     new OsuSpriteText
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
-                        Colour = Color4.Red,
+                        Colour = Colour4.Red,
                         Text = @"(( Component ))"
                     }
                 }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingLayer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingLayer.cs
index 2fb8d11cd32b..9441673fff13 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingLayer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingLayer.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -14,9 +15,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -42,7 +41,7 @@ public void SetUp() => Schedule(() =>
                     {
                         new Box
                         {
-                            Colour = Color4.SlateGray,
+                            Colour = Colour4.SlateGray,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new FillFlowContainer
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingSpinner.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingSpinner.cs
index b3d943b93db0..7ff6517ca8b9 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingSpinner.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneLoadingSpinner.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -19,7 +18,7 @@ public TestSceneLoadingSpinner()
             {
                 new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both
                 },
                 loading = new LoadingSpinner()
@@ -31,7 +30,7 @@ public TestSceneLoadingSpinner()
             {
                 new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both
                 },
                 loading = new LoadingSpinner(true)
@@ -43,7 +42,7 @@ public TestSceneLoadingSpinner()
             {
                 new Box
                 {
-                    Colour = Color4.Gray,
+                    Colour = Colour4.Gray,
                     RelativeSizeAxes = Axes.Both
                 },
                 loading = new LoadingSpinner()
@@ -55,7 +54,7 @@ public TestSceneLoadingSpinner()
             {
                 new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both
                 },
                 loading = new LoadingSpinner(false, true)
@@ -67,7 +66,7 @@ public TestSceneLoadingSpinner()
             {
                 new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both
                 },
                 loading = new LoadingSpinner(true, true)
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneLogoTrackingContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneLogoTrackingContainer.cs
index d3e5042f0cd7..ae64be085b72 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneLogoTrackingContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneLogoTrackingContainer.cs
@@ -5,6 +5,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Graphics;
@@ -14,8 +15,6 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics.Containers;
 using osu.Game.Screens.Menu;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -85,7 +84,7 @@ public void TestTransferFacade()
             AddStep("Transfer facade to a new container", () =>
             {
                 transferContainer.Add(logoFacade);
-                transferContainerBox.Colour = Color4.Tomato;
+                transferContainerBox.Colour = Colour4.Tomato;
                 moveLogoFacade();
             });
 
@@ -122,7 +121,7 @@ public void TestFlowContainer()
                     {
                         Origin = Anchor.TopCentre,
                         Anchor = Anchor.TopCentre,
-                        Colour = Color4.Azure,
+                        Colour = Colour4.Azure,
                         Size = new Vector2(visual_box_size)
                     },
                     new Container
@@ -136,7 +135,7 @@ public void TestFlowContainer()
                         {
                             visualBox = new Box
                             {
-                                Colour = Color4.White,
+                                Colour = Colour4.White,
                                 RelativeSizeAxes = Axes.Both,
                             },
                             trackingContainer.LogoFacade,
@@ -146,7 +145,7 @@ public void TestFlowContainer()
                     {
                         Origin = Anchor.TopCentre,
                         Anchor = Anchor.TopCentre,
-                        Colour = Color4.Azure,
+                        Colour = Colour4.Azure,
                         Size = new Vector2(visual_box_size)
                     },
                 };
@@ -158,12 +157,12 @@ public void TestFlowContainer()
 
                 logo.MoveTo(new Vector2(0.5f), 500, Easing.InOutExpo);
 
-                visualBox.Colour = Color4.White;
+                visualBox.Colour = Colour4.White;
 
                 Scheduler.AddDelayed(() =>
                 {
                     logoTracking = trackingContainer.StartTracking(logo, 1000, Easing.InOutExpo);
-                    visualBox.Colour = Color4.Tomato;
+                    visualBox.Colour = Colour4.Tomato;
                 }, 700);
             });
 
@@ -239,7 +238,7 @@ private void addFacadeContainers()
                     Size = new Vector2(visual_box_size),
                     Child = visualBox = new Box
                     {
-                        Colour = Color4.Tomato,
+                        Colour = Colour4.Tomato,
                         RelativeSizeAxes = Axes.Both,
                     }
                 },
@@ -250,7 +249,7 @@ private void addFacadeContainers()
                     Size = new Vector2(visual_box_size),
                     Child = transferContainerBox = new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                     }
                 },
@@ -265,7 +264,7 @@ private void addFacadeContainers()
         private void removeFacade()
         {
             trackingContainer.Remove(logoFacade, false);
-            visualBox.Colour = Color4.White;
+            visualBox.Colour = Colour4.White;
             moveLogoFacade();
         }
 
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneMainMenuButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneMainMenuButton.cs
index 86659675a0bf..f3a10a2ef7a8 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneMainMenuButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneMainMenuButton.cs
@@ -13,8 +13,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.Menu;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -30,7 +29,7 @@ public partial class TestSceneMainMenuButton : OsuTestScene
         public void TestStandardButton()
         {
             AddStep("add button", () => Child = new MainMenuButton(
-                ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Color4(102, 68, 204, 255), (_, _) => { }, 0, Key.P)
+                ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Colour4(102, 68, 204, 255), (_, _) => { }, 0, Key.P)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
@@ -87,7 +86,7 @@ public void TestDailyChallengeButton()
                         Origin = Anchor.Centre,
                         AutoSizeAxes = Axes.Both,
                         CachedDependencies = [(typeof(INotificationOverlay), notificationOverlay)],
-                        Child = new DailyChallengeButton(@"button-default-select", new Color4(102, 68, 204, 255), (_, _) => { }, 0, Key.D)
+                        Child = new DailyChallengeButton(@"button-default-select", new Colour4(102, 68, 204, 255), (_, _) => { }, 0, Key.D)
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
@@ -161,7 +160,7 @@ public void TestDailyChallengeButtonOldChallenge()
                         Origin = Anchor.Centre,
                         AutoSizeAxes = Axes.Both,
                         CachedDependencies = [(typeof(INotificationOverlay), notificationOverlay)],
-                        Child = new DailyChallengeButton(@"button-default-select", new Color4(102, 68, 204, 255), (_, _) => { }, 0, Key.D)
+                        Child = new DailyChallengeButton(@"button-default-select", new Colour4(102, 68, 204, 255), (_, _) => { }, 0, Key.D)
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModColumn.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModColumn.cs
index 18739c027525..9370827774dc 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModColumn.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModColumn.cs
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Utils;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModCustomisationPanel.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModCustomisationPanel.cs
index 006639a75e61..62940d077c17 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModCustomisationPanel.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModCustomisationPanel.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -13,8 +14,6 @@
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModDifficultyAdjustSettings.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModDifficultyAdjustSettings.cs
index 30470c9c17c4..e251ea0f557e 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModDifficultyAdjustSettings.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModDifficultyAdjustSettings.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -16,9 +17,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -42,7 +41,7 @@ public void SetUpSteps()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new FillFlowContainer
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModPanel.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModPanel.cs
index 59d1ef23d9c6..1da48fdbf3e2 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModPanel.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModPanel.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,8 +11,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetColumn.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetColumn.cs
index 387d904335e9..899908cbb733 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetColumn.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetColumn.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
@@ -21,7 +20,7 @@
 using osu.Game.Rulesets.Mania.Mods;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetPanel.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetPanel.cs
index 0d7bcd8026b2..179915d5a5ae 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetPanel.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModPresetPanel.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModSelectOverlay.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModSelectOverlay.cs
index c2edd3fad704..dfd91ff1aca3 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModSelectOverlay.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModSelectOverlay.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -29,8 +30,6 @@
 using osu.Game.Screens;
 using osu.Game.Screens.Footer;
 using osu.Game.Tests.Mods;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchSmall.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchSmall.cs
index 83dc96d0d74b..f147fccb0613 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchSmall.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchSmall.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -15,7 +16,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchTiny.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchTiny.cs
index b7cf3fef9b4a..67558ced48d5 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchTiny.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneModSwitchTiny.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -18,7 +19,6 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Taiko;
 using osu.Game.Rulesets.UI;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneNotificationOverlay.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneNotificationOverlay.cs
index 1e7ac0b46ca9..1c871b632a40 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneNotificationOverlay.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneNotificationOverlay.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -17,8 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Updater;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuAnimatedButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuAnimatedButton.cs
index eba3885a2bf8..a0d1407fa348 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuAnimatedButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuAnimatedButton.cs
@@ -3,11 +3,11 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuDropdown.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuDropdown.cs
index 2f855c874497..0b6e53d83c1d 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuDropdown.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuDropdown.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuHoverContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuHoverContainer.cs
index ab5a70f44873..d7053a07b622 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuHoverContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuHoverContainer.cs
@@ -3,13 +3,12 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -183,8 +182,8 @@ private void doMoveOut()
 
         private sealed partial class OsuHoverTestContainer : OsuHoverContainer
         {
-            public static readonly Color4 HOVER_COLOUR = Color4.Red;
-            public static readonly Color4 IDLE_COLOUR = Color4.Green;
+            public static readonly Colour4 HOVER_COLOUR = Colour4.Red;
+            public static readonly Colour4 IDLE_COLOUR = Colour4.Green;
 
             public OsuHoverTestContainer()
             {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuIcon.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuIcon.cs
index a1254678b7a6..b1e176dc3f57 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuIcon.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuIcon.cs
@@ -5,6 +5,7 @@
 
 using System.Diagnostics;
 using System.Reflection;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -15,8 +16,6 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -31,7 +30,7 @@ public TestSceneOsuIcon()
             {
                 new Box
                 {
-                    Colour = Color4.Teal,
+                    Colour = Colour4.Teal,
                     RelativeSizeAxes = Axes.Both,
                 },
                 new OsuScrollContainer
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuLogo.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuLogo.cs
index 27d2ff97facf..8c16e44bc248 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuLogo.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuLogo.cs
@@ -1,11 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Screens.Menu;
 using osu.Game.Seasonal;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuMenu.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuMenu.cs
index addaab5d3565..a82b23b92491 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuMenu.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuMenu.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuPopover.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuPopover.cs
index 98ae50c915c2..4b335dc6864d 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuPopover.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuPopover.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
@@ -12,7 +13,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTextBox.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTextBox.cs
index abad7e775cd6..348810e5a194 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTextBox.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTextBox.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -10,8 +11,7 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTooltip.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTooltip.cs
index a2e88bfbc9bc..0991d4b72664 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTooltip.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOsuTooltip.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +13,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Graphics.Sprites;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayContainer.cs
index e544fb127dd7..f5c785cb0af9 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayContainer.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,9 +11,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays.Volume;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 using Box = osu.Framework.Graphics.Shapes.Box;
 
 namespace osu.Game.Tests.Visual.UserInterface
@@ -108,7 +107,7 @@ private void load()
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         Text = "Overlay content",
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     },
                 };
             }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeader.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeader.cs
index 9626bdc929ba..52774ec192bf 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeader.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeader.cs
@@ -8,7 +8,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -23,7 +22,7 @@ public TestSceneOverlayHeader()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
                 new BasicScrollContainer
                 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeaderBackground.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeaderBackground.cs
index 7b5658babdfd..5622b8f88e5f 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeaderBackground.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayHeaderBackground.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayRulesetSelector.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayRulesetSelector.cs
index bf7de3709a86..38391ef425b7 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayRulesetSelector.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayRulesetSelector.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -12,7 +13,6 @@
 using osu.Game.Rulesets.Mania;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Taiko;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayScrollContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayScrollContainer.cs
index 9371ea580790..cf80a0c4152d 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayScrollContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneOverlayScrollContainer.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Overlays;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -37,7 +36,7 @@ public void SetUp() => Schedule(() =>
                     Child = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Gray
+                        Colour = Colour4.Gray
                     }
                 }
             };
diff --git a/osu.Game.Tests/Visual/UserInterface/TestScenePlaylistOverlay.cs b/osu.Game.Tests/Visual/UserInterface/TestScenePlaylistOverlay.cs
index b6d9bad5bb99..3d6b2d03efeb 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestScenePlaylistOverlay.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestScenePlaylistOverlay.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -14,7 +15,6 @@
 using osu.Game.Overlays.Music;
 using osu.Game.Rulesets;
 using osu.Game.Tests.Resources;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestScenePopupDialog.cs b/osu.Game.Tests/Visual/UserInterface/TestScenePopupDialog.cs
index 96d19911bd4b..79ce7a32a048 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestScenePopupDialog.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestScenePopupDialog.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Testing;
 using osu.Game.Overlays.Dialog;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -36,7 +35,7 @@ public void TestDangerousButton([Values(false, true)] bool atEdge)
                 AddStep("move mouse to button edge", () =>
                 {
                     var dangerousButtonQuad = dialog.DangerousButton.ScreenSpaceDrawQuad;
-                    InputManager.MoveMouseTo(new Vector2(dangerousButtonQuad.TopLeft.X + 5, dangerousButtonQuad.Centre.Y));
+                    InputManager.MoveMouseTo(dangerousButtonQuad.Centre with { X = dangerousButtonQuad.TopLeft.X + 5 });
                 });
             }
             else
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneRangeSlider.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneRangeSlider.cs
index b780764e7fb8..842e313f35a5 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneRangeSlider.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneRangeSlider.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -8,7 +9,6 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneRoundedSliderBar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneRoundedSliderBar.cs
index 66d54c8562b9..1405800c3fb7 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneRoundedSliderBar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneRoundedSliderBar.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSafeAreaHandling.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSafeAreaHandling.cs
index 453cdd135753..df38c93f03ac 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSafeAreaHandling.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSafeAreaHandling.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Configuration;
 using osu.Game.Overlays.Settings;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -57,7 +56,7 @@ public override void SetUpSteps()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                             Alpha = 0.8f,
                         },
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneScalingContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneScalingContainer.cs
index 26fa26a0b8dd..888d25de213b 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneScalingContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneScalingContainer.cs
@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,8 +12,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -55,14 +54,14 @@ private void load()
                                     {
                                         new Box
                                         {
-                                            Colour = Color4.Purple,
+                                            Colour = Colour4.Purple,
                                             RelativeSizeAxes = Axes.Both,
                                         },
                                         scaleTarget = new Box
                                         {
                                             Anchor = Anchor.Centre,
                                             Origin = Anchor.Centre,
-                                            Colour = Color4.White,
+                                            Colour = Colour4.White,
                                             Size = new Vector2(100),
                                         },
                                     }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneScreenFooter.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneScreenFooter.cs
index cc74bcd598b6..1e979bef9243 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneScreenFooter.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneScreenFooter.cs
@@ -19,7 +19,7 @@
 using osu.Game.Screens;
 using osu.Game.Screens.Footer;
 using osu.Game.Screens.Select;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSectionsContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSectionsContainer.cs
index def8cc4c580c..1bb532a6eb57 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSectionsContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSectionsContainer.cs
@@ -5,7 +5,6 @@
 
 using System.Linq;
 using NUnit.Framework;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -182,7 +180,7 @@ public void TestNavigation()
         }
 
         private static readonly ColourInfo selected_colour = ColourInfo.GradientVertical(new OsuColour().Orange2, new OsuColour().Orange3);
-        private static readonly ColourInfo default_colour = ColourInfo.GradientVertical(Color4.White, Color4.DarkGray);
+        private static readonly ColourInfo default_colour = ColourInfo.GradientVertical(Colour4.White, Colour4.DarkGray);
 
         private void append(float multiplier)
         {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSegmentedGraph.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSegmentedGraph.cs
index 320ec48e076d..b0f63f971c63 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSegmentedGraph.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSegmentedGraph.cs
@@ -5,13 +5,13 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsCheckbox.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsCheckbox.cs
index 1101f271398e..4069af976869 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsCheckbox.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsCheckbox.cs
@@ -3,13 +3,13 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsColour.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsColour.cs
index 8d28116950dd..a202adaa73fb 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsColour.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsColour.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays.Settings;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -66,7 +65,7 @@ private void createContent()
             });
         }
 
-        private Colour4 randomColour() => new Color4(
+        private Colour4 randomColour() => new Colour4(
             RNG.NextSingle(),
             RNG.NextSingle(),
             RNG.NextSingle(),
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsToolboxGroup.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsToolboxGroup.cs
index f96d2feba814..1dd53d349160 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsToolboxGroup.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSettingsToolboxGroup.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,8 +13,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearAligningWrapper.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearAligningWrapper.cs
index eb65de8fdc6e..bd73a708114e 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearAligningWrapper.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearAligningWrapper.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
@@ -12,8 +13,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -96,9 +95,9 @@ public void SetUpSteps()
         public partial class ShearedBox : Container
         {
             private readonly string text;
-            private readonly Color4 boxColour;
+            private readonly Colour4 boxColour;
 
-            public ShearedBox(string text, Color4 boxColour)
+            public ShearedBox(string text, Colour4 boxColour)
             {
                 this.text = text;
                 this.boxColour = boxColour;
@@ -120,7 +119,7 @@ private void load()
                     new OsuSpriteText
                     {
                         Text = text,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Shear = -OsuGame.SHEAR,
                         Font = OsuFont.Torus.With(size: 24),
                         Margin = new MarginPadding { Left = 50 },
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedButtons.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedButtons.cs
index f226920cb633..d464243a47b2 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedButtons.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedButtons.cs
@@ -13,7 +13,7 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedDropdown.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedDropdown.cs
index d650ce6c36d0..6654cd423902 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedDropdown.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedDropdown.cs
@@ -2,12 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -25,7 +23,7 @@ public TestSceneShearedDropdown()
             {
                 new Box
                 {
-                    Colour = Color4.Black.Opacity(0.75f),
+                    Colour = Colour4.Black.Opacity(0.75f),
                     RelativeSizeAxes = Axes.Both,
                 },
                 new ShearedDropdown<string>("Test")
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedOverlayContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedOverlayContainer.cs
index fb0676056859..7748faee4213 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedOverlayContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedOverlayContainer.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -15,9 +16,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -89,7 +88,7 @@ private void load()
                     {
                         new Box
                         {
-                            Colour = Color4.Blue,
+                            Colour = Colour4.Blue,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new OsuSpriteText
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedRangeSlider.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedRangeSlider.cs
index fdc5b5948af4..e930610b6c5c 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedRangeSlider.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedRangeSlider.cs
@@ -2,18 +2,16 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -54,7 +52,7 @@ protected override void LoadComplete()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black.Opacity(0.5f),
+                    Colour = Colour4.Black.Opacity(0.5f),
                 },
                 shearedRangeSlider = new ShearedRangeSlider("Test")
                 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSearchTextBox.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSearchTextBox.cs
index 0ecaf4900a1e..b65d248ae37a 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSearchTextBox.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSearchTextBox.cs
@@ -3,12 +3,12 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSliderBar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSliderBar.cs
index 7a654fcb4b89..45d7ed25465b 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSliderBar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneShearedSliderBar.cs
@@ -4,13 +4,11 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -46,7 +44,7 @@ public void TestNubDisplay()
             AddToggleStep("nub shadow", v =>
             {
                 if (slider.IsNotNull())
-                    slider.NubShadowColour = v ? Color4.Black.Opacity(0.2f) : Color4.Black.Opacity(0f);
+                    slider.NubShadowColour = v ? Colour4.Black.Opacity(0.2f) : Colour4.Black.Opacity(0f);
             });
         }
 
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneStarRatingDisplay.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneStarRatingDisplay.cs
index 27f1ebac0c1d..e98a787b4e73 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneStarRatingDisplay.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneStarRatingDisplay.cs
@@ -4,13 +4,13 @@
 #nullable disable
 
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Drawables;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneStatefulMenuItem.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneStatefulMenuItem.cs
index 88187f180813..75f580b058ea 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneStatefulMenuItem.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneStatefulMenuItem.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneSwitchButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneSwitchButton.cs
index 9b2a7ae2ef26..0e511b368e98 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneSwitchButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneSwitchButton.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneTabControl.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneTabControl.cs
index 49eb1f092c31..e127c52a28a5 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneTabControl.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneTabControl.cs
@@ -2,11 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.ComponentModel;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Select.Filter;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneTwoLayerButton.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneTwoLayerButton.cs
index 524119f34db2..0a5b70aee25f 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneTwoLayerButton.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneTwoLayerButton.cs
@@ -1,11 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
+using System.Numerics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -18,8 +17,8 @@ public TestSceneTwoLayerButton()
                 Position = new Vector2(100),
                 Text = "button",
                 Icon = FontAwesome.Solid.Check,
-                BackgroundColour = Color4.SlateGray,
-                HoverColour = Color4.SlateGray.Darken(0.2f)
+                BackgroundColour = Colour4.SlateGray,
+                HoverColour = Colour4.SlateGray.Darken(0.2f)
             });
         }
     }
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapBackgroundSprite.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapBackgroundSprite.cs
index 5f70c983d1c5..b9b716a4051e 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapBackgroundSprite.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapBackgroundSprite.cs
@@ -5,6 +5,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
@@ -17,7 +18,6 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Tests.Beatmaps.IO;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapSetCover.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapSetCover.cs
index 6dfb01bb1a37..e9854a91b6cc 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapSetCover.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneUpdateableBeatmapSetCover.cs
@@ -7,6 +7,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -16,7 +17,6 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneUprightAspectMaintainingContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneUprightAspectMaintainingContainer.cs
index c7e46e2b97f7..95a55ce44b60 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneUprightAspectMaintainingContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneUprightAspectMaintainingContainer.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,8 +13,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -57,7 +56,7 @@ public TestSceneUprightAspectMaintainingContainer()
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = new Color4(255, 0, 0, 160),
+                                Colour = new Colour4(255, 0, 0, 160),
                             },
                             new OsuSpriteText
                             {
@@ -78,7 +77,7 @@ public TestSceneUprightAspectMaintainingContainer()
                                     new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = new Color4(0, 0, 255, 160),
+                                        Colour = new Colour4(0, 0, 255, 160),
                                     },
                                     new OsuSpriteText
                                     {
@@ -173,10 +172,12 @@ from rotation in rotationSteps
 
         private bool uprightAspectMaintainingContainerStateIsValid(Container parent, UprightAspectMaintainingContainer child)
         {
-            Matrix3 parentMatrix = parent.DrawInfo.Matrix;
-            Matrix3 childMatrix = child.DrawInfo.Matrix;
-            Vector3 childScale = childMatrix.ExtractScale();
-            Vector3 parentScale = parentMatrix.ExtractScale();
+            Matrix3x2 parentMatrix = parent.DrawInfo.Matrix;
+            Matrix3x2 childMatrix = child.DrawInfo.Matrix;
+            float childScaleX = MathF.Sqrt(childMatrix.M11 * childMatrix.M11 + childMatrix.M12 * childMatrix.M12);
+            float childScaleY = MathF.Sqrt(childMatrix.M21 * childMatrix.M21 + childMatrix.M22 * childMatrix.M22);
+            float parentScaleX = MathF.Sqrt(parentMatrix.M11 * parentMatrix.M11 + parentMatrix.M12 * parentMatrix.M12);
+            float parentScaleY = MathF.Sqrt(parentMatrix.M21 * parentMatrix.M21 + parentMatrix.M22 * parentMatrix.M22);
 
             // Orientation check
             if (!(isNearlyZero(MathF.Abs(childMatrix.M21)) && isNearlyZero(MathF.Abs(childMatrix.M12))))
@@ -187,7 +188,7 @@ private bool uprightAspectMaintainingContainerStateIsValid(Container parent, Upr
                 return false;
 
             // Aspect ratio check
-            if (!isNearlyZero(childScale.X - childScale.Y))
+            if (!isNearlyZero(childScaleX - childScaleY))
                 return false;
 
             // ScalingMode check
@@ -200,13 +201,13 @@ private bool uprightAspectMaintainingContainerStateIsValid(Container parent, Upr
                     break;
 
                 case ScaleMode.Vertical:
-                    if (!(checkScaling(child.ScalingFactor, parentScale.Y, childScale.Y)))
+                    if (!(checkScaling(child.ScalingFactor, parentScaleY, childScaleY)))
                         return false;
 
                     break;
 
                 case ScaleMode.Horizontal:
-                    if (!(checkScaling(child.ScalingFactor, parentScale.X, childScale.X)))
+                    if (!(checkScaling(child.ScalingFactor, parentScaleX, childScaleX)))
                         return false;
 
                     break;
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneUserListToolbar.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneUserListToolbar.cs
index a373fbbc51f0..e22213a444cc 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneUserListToolbar.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneUserListToolbar.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Dashboard.Friends;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneVolumePieces.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneVolumePieces.cs
index b85e4c19d122..2010706e2d6b 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneVolumePieces.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneVolumePieces.cs
@@ -1,10 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Overlays.Volume;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -14,10 +13,10 @@ protected override void LoadComplete()
         {
             VolumeMeter meter;
             MuteButton mute;
-            Add(meter = new VolumeMeter("MASTER", 125, Color4.Green) { Position = new Vector2(10) });
+            Add(meter = new VolumeMeter("MASTER", 125, Colour4.Green) { Position = new Vector2(10) });
             AddSliderStep("master volume", 0, 10, 0, i => meter.Bindable.Value = i * 0.1);
 
-            Add(new VolumeMeter("BIG", 250, Color4.Red)
+            Add(new VolumeMeter("BIG", 250, Colour4.Red)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
@@ -25,7 +24,7 @@ protected override void LoadComplete()
                 Margin = new MarginPadding { Left = 250 },
             });
 
-            Add(new VolumeMeter("SML", 125, Color4.Blue)
+            Add(new VolumeMeter("SML", 125, Colour4.Blue)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
diff --git a/osu.Game.Tests/Visual/UserInterface/TestSceneWaveContainer.cs b/osu.Game.Tests/Visual/UserInterface/TestSceneWaveContainer.cs
index e1f8357a36e3..a7cb730753b7 100644
--- a/osu.Game.Tests/Visual/UserInterface/TestSceneWaveContainer.cs
+++ b/osu.Game.Tests/Visual/UserInterface/TestSceneWaveContainer.cs
@@ -1,16 +1,14 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
@@ -35,7 +33,7 @@ private void load(OsuColour colours)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black.Opacity(0.5f),
+                        Colour = Colour4.Black.Opacity(0.5f),
                     },
                     new OsuSpriteText
                     {
diff --git a/osu.Game.Tests/Visual/UserInterface/ThemeComparisonTestScene.cs b/osu.Game.Tests/Visual/UserInterface/ThemeComparisonTestScene.cs
index 44133d89f8be..cd18a00507b6 100644
--- a/osu.Game.Tests/Visual/UserInterface/ThemeComparisonTestScene.cs
+++ b/osu.Game.Tests/Visual/UserInterface/ThemeComparisonTestScene.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -10,7 +11,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Tests.Visual.UserInterface
 {
diff --git a/osu.Game.Tournament.Tests/Components/TestSceneDateTextBox.cs b/osu.Game.Tournament.Tests/Components/TestSceneDateTextBox.cs
index d018a7ed5c94..d5791636fab4 100644
--- a/osu.Game.Tournament.Tests/Components/TestSceneDateTextBox.cs
+++ b/osu.Game.Tournament.Tests/Components/TestSceneDateTextBox.cs
@@ -1,11 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using NUnit.Framework;
 using osu.Game.Tests.Visual;
 using osu.Game.Tournament.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Tests.Components
 {
diff --git a/osu.Game.Tournament.Tests/Components/TestSceneMatchHeader.cs b/osu.Game.Tournament.Tests/Components/TestSceneMatchHeader.cs
index ae4c5ec685ed..f50a34841971 100644
--- a/osu.Game.Tournament.Tests/Components/TestSceneMatchHeader.cs
+++ b/osu.Game.Tournament.Tests/Components/TestSceneMatchHeader.cs
@@ -1,11 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Tournament.Screens.Gameplay.Components;
-using osuTK;
 
 namespace osu.Game.Tournament.Tests.Components
 {
diff --git a/osu.Game.Tournament.Tests/Components/TestSceneTournamentModDisplay.cs b/osu.Game.Tournament.Tests/Components/TestSceneTournamentModDisplay.cs
index 0b69da78a4a2..6dae6f412062 100644
--- a/osu.Game.Tournament.Tests/Components/TestSceneTournamentModDisplay.cs
+++ b/osu.Game.Tournament.Tests/Components/TestSceneTournamentModDisplay.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -10,7 +11,6 @@
 using osu.Game.Rulesets;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Tests.Components
 {
diff --git a/osu.Game.Tournament.Tests/Screens/TestSceneLadderEditorScreen.cs b/osu.Game.Tournament.Tests/Screens/TestSceneLadderEditorScreen.cs
index 5858ab22a7bd..f0ad7ed61b36 100644
--- a/osu.Game.Tournament.Tests/Screens/TestSceneLadderEditorScreen.cs
+++ b/osu.Game.Tournament.Tests/Screens/TestSceneLadderEditorScreen.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using Newtonsoft.Json;
 using NUnit.Framework;
 using osu.Framework.Bindables;
@@ -13,8 +14,7 @@
 using osu.Game.Overlays.Dialog;
 using osu.Game.Tournament.Screens.Editors;
 using osu.Game.Tournament.Screens.Editors.Components;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Tests.Screens
 {
diff --git a/osu.Game.Tournament.Tests/Screens/TestSceneMapPoolScreen.cs b/osu.Game.Tournament.Tests/Screens/TestSceneMapPoolScreen.cs
index 7e008a6897ee..4936697ffd76 100644
--- a/osu.Game.Tournament.Tests/Screens/TestSceneMapPoolScreen.cs
+++ b/osu.Game.Tournament.Tests/Screens/TestSceneMapPoolScreen.cs
@@ -9,8 +9,8 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.MapPool;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Tests.Screens
 {
diff --git a/osu.Game.Tournament.Tests/TournamentScreenTestScene.cs b/osu.Game.Tournament.Tests/TournamentScreenTestScene.cs
index e8cca00c923b..9b83ed0be2fd 100644
--- a/osu.Game.Tournament.Tests/TournamentScreenTestScene.cs
+++ b/osu.Game.Tournament.Tests/TournamentScreenTestScene.cs
@@ -2,10 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
 
 namespace osu.Game.Tournament.Tests
 {
diff --git a/osu.Game.Tournament/Components/ControlPanel.cs b/osu.Game.Tournament/Components/ControlPanel.cs
index b5912349a066..744cfdd7fe2e 100644
--- a/osu.Game.Tournament/Components/ControlPanel.cs
+++ b/osu.Game.Tournament/Components/ControlPanel.cs
@@ -1,12 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Components
 {
@@ -32,7 +31,7 @@ public ControlPanel()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = new Color4(54, 54, 54, 255)
+                    Colour = new Colour4(54, 54, 54, 255)
                 },
                 new TournamentSpriteText
                 {
diff --git a/osu.Game.Tournament/Components/DrawableTeamFlag.cs b/osu.Game.Tournament/Components/DrawableTeamFlag.cs
index 90638a7758fb..e8cf7326d449 100644
--- a/osu.Game.Tournament/Components/DrawableTeamFlag.cs
+++ b/osu.Game.Tournament/Components/DrawableTeamFlag.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -10,7 +11,6 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Components
 {
diff --git a/osu.Game.Tournament/Components/DrawableTeamHeader.cs b/osu.Game.Tournament/Components/DrawableTeamHeader.cs
index e9ce9f3759ca..552d021cd731 100644
--- a/osu.Game.Tournament/Components/DrawableTeamHeader.cs
+++ b/osu.Game.Tournament/Components/DrawableTeamHeader.cs
@@ -1,8 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Components
 {
diff --git a/osu.Game.Tournament/Components/DrawableTeamTitleWithHeader.cs b/osu.Game.Tournament/Components/DrawableTeamTitleWithHeader.cs
index 7d8fc847d430..48eb91fec9de 100644
--- a/osu.Game.Tournament/Components/DrawableTeamTitleWithHeader.cs
+++ b/osu.Game.Tournament/Components/DrawableTeamTitleWithHeader.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Components
 {
diff --git a/osu.Game.Tournament/Components/DrawableTeamWithPlayers.cs b/osu.Game.Tournament/Components/DrawableTeamWithPlayers.cs
index 705e6162be2a..0d909f493a6f 100644
--- a/osu.Game.Tournament/Components/DrawableTeamWithPlayers.cs
+++ b/osu.Game.Tournament/Components/DrawableTeamWithPlayers.cs
@@ -3,13 +3,12 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Tournament.Models;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Components
 {
@@ -65,7 +64,7 @@ static TournamentSpriteText createPlayerText(TournamentUser p) =>
                 {
                     Text = p.Username,
                     Font = OsuFont.Torus.With(size: 24, weight: FontWeight.SemiBold),
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                 };
         }
     }
diff --git a/osu.Game.Tournament/Components/SongBar.cs b/osu.Game.Tournament/Components/SongBar.cs
index c7649a579203..3c75a73f9171 100644
--- a/osu.Game.Tournament/Components/SongBar.cs
+++ b/osu.Game.Tournament/Components/SongBar.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -18,8 +19,6 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Menu;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Components
 {
@@ -221,7 +220,7 @@ private void refreshContent()
                                         {
                                             new Box
                                             {
-                                                Colour = Color4.Black,
+                                                Colour = Colour4.Black,
                                                 RelativeSizeAxes = Axes.Both,
                                                 Alpha = 0.1f,
                                             },
diff --git a/osu.Game.Tournament/Components/TournamentBeatmapPanel.cs b/osu.Game.Tournament/Components/TournamentBeatmapPanel.cs
index d57fb2c7460f..5efb2dcc7c85 100644
--- a/osu.Game.Tournament/Components/TournamentBeatmapPanel.cs
+++ b/osu.Game.Tournament/Components/TournamentBeatmapPanel.cs
@@ -14,7 +14,6 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics;
 using osu.Game.Tournament.Models;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Components
 {
@@ -52,7 +51,7 @@ private void load(LadderInfo ladder)
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
                 new NoUnloadBeatmapSetCover
                 {
@@ -110,7 +109,7 @@ private void load(LadderInfo ladder)
                 flash = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Gray,
+                    Colour = Colour4.Gray,
                     Blending = BlendingParameters.Additive,
                     Alpha = 0,
                 },
@@ -165,19 +164,19 @@ private void updateState()
                 switch (newChoice.Type)
                 {
                     case ChoiceType.Pick:
-                        Colour = Color4.White;
+                        Colour = Colour4.White;
                         Alpha = 1;
                         break;
 
                     case ChoiceType.Ban:
-                        Colour = Color4.Gray;
+                        Colour = Colour4.Gray;
                         Alpha = 0.5f;
                         break;
                 }
             }
             else
             {
-                Colour = Color4.White;
+                Colour = Colour4.White;
                 BorderThickness = 0;
                 Alpha = 1;
             }
diff --git a/osu.Game.Tournament/Components/TournamentModIcon.cs b/osu.Game.Tournament/Components/TournamentModIcon.cs
index 28114e64fe7d..adb3695e20a0 100644
--- a/osu.Game.Tournament/Components/TournamentModIcon.cs
+++ b/osu.Game.Tournament/Components/TournamentModIcon.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -9,7 +10,6 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.UI;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Components
 {
diff --git a/osu.Game.Tournament/SaveChangesOverlay.cs b/osu.Game.Tournament/SaveChangesOverlay.cs
index 0b5194a51fd3..7101431a39f3 100644
--- a/osu.Game.Tournament/SaveChangesOverlay.cs
+++ b/osu.Game.Tournament/SaveChangesOverlay.cs
@@ -2,8 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Threading.Tasks;
+using System.Numerics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -12,7 +12,6 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Online.Multiplayer;
-using osuTK;
 
 namespace osu.Game.Tournament
 {
diff --git a/osu.Game.Tournament/Screens/Drawings/Components/Group.cs b/osu.Game.Tournament/Screens/Drawings/Components/Group.cs
index 9d4474a58cd1..20aee67001f1 100644
--- a/osu.Game.Tournament/Screens/Drawings/Components/Group.cs
+++ b/osu.Game.Tournament/Screens/Drawings/Components/Group.cs
@@ -4,13 +4,12 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Tournament.Models;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Drawings.Components
 {
@@ -38,7 +37,7 @@ public Group(string name)
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = new Color4(54, 54, 54, 255)
+                    Colour = new Colour4(54, 54, 54, 255)
                 },
                 // Group name
                 new TournamentSpriteText
@@ -50,7 +49,7 @@ public Group(string name)
 
                     Text = $"GROUP {name.ToUpperInvariant()}",
                     Font = OsuFont.Torus.With(weight: FontWeight.Bold, size: 8),
-                    Colour = new Color4(255, 204, 34, 255),
+                    Colour = new Colour4(255, 204, 34, 255),
                 },
                 teams = new FillFlowContainer<GroupTeam>
                 {
diff --git a/osu.Game.Tournament/Screens/Drawings/Components/GroupContainer.cs b/osu.Game.Tournament/Screens/Drawings/Components/GroupContainer.cs
index 0a2fa3f2074c..194997ff64a1 100644
--- a/osu.Game.Tournament/Screens/Drawings/Components/GroupContainer.cs
+++ b/osu.Game.Tournament/Screens/Drawings/Components/GroupContainer.cs
@@ -5,10 +5,10 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Drawings.Components
 {
diff --git a/osu.Game.Tournament/Screens/Drawings/Components/GroupTeam.cs b/osu.Game.Tournament/Screens/Drawings/Components/GroupTeam.cs
index 137003a1265e..6eff79d8c64f 100644
--- a/osu.Game.Tournament/Screens/Drawings/Components/GroupTeam.cs
+++ b/osu.Game.Tournament/Screens/Drawings/Components/GroupTeam.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Drawings.Components
 {
diff --git a/osu.Game.Tournament/Screens/Drawings/Components/ScrollingTeamContainer.cs b/osu.Game.Tournament/Screens/Drawings/Components/ScrollingTeamContainer.cs
index ae9d7f418258..70fec3fe983d 100644
--- a/osu.Game.Tournament/Screens/Drawings/Components/ScrollingTeamContainer.cs
+++ b/osu.Game.Tournament/Screens/Drawings/Components/ScrollingTeamContainer.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -14,8 +15,6 @@
 using osu.Game.Graphics;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Drawings.Components
 {
@@ -69,7 +68,7 @@ public ScrollingTeamContainer()
                             Origin = Anchor.BottomCentre,
                             Size = new Vector2(2, 55),
 
-                            Colour = ColourInfo.GradientVertical(Color4.Transparent, Color4.White)
+                            Colour = ColourInfo.GradientVertical(Colour4.Transparent, Colour4.White)
                         },
                         new Box
                         {
@@ -77,7 +76,7 @@ public ScrollingTeamContainer()
                             Origin = Anchor.TopCentre,
                             Size = new Vector2(2, 55),
 
-                            Colour = ColourInfo.GradientVertical(Color4.White, Color4.Transparent)
+                            Colour = ColourInfo.GradientVertical(Colour4.White, Colour4.Transparent)
                         }
                     }
                 }
@@ -136,7 +135,7 @@ private void setScrollState(ScrollState newState)
                             closest = stc;
                     }
 
-                    Debug.Assert(closest != null, "closest != null");
+                    Debug.Assert(closest != null);
 
                     offset += DrawWidth / 2f - (closest.Position.X + closest.DrawWidth / 2f);
 
diff --git a/osu.Game.Tournament/Screens/Drawings/DrawingsScreen.cs b/osu.Game.Tournament/Screens/Drawings/DrawingsScreen.cs
index fc59b486fe79..17a130d69f80 100644
--- a/osu.Game.Tournament/Screens/Drawings/DrawingsScreen.cs
+++ b/osu.Game.Tournament/Screens/Drawings/DrawingsScreen.cs
@@ -6,6 +6,7 @@
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -18,8 +19,6 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Drawings.Components;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Drawings
 {
@@ -59,7 +58,7 @@ private void load(Storage storage)
                 {
                     new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
@@ -75,7 +74,7 @@ private void load(Storage storage)
                     }
                 };
 
-                links.AddLink("Click for details on the file format", "https://osu.ppy.sh/wiki/en/Tournament_Drawings", t => t.Colour = Color4.White);
+                links.AddLink("Click for details on the file format", "https://osu.ppy.sh/wiki/en/Tournament_Drawings", t => t.Colour = Colour4.White);
                 return;
             }
 
@@ -103,7 +102,7 @@ private void load(Storage storage)
                             RelativeSizeAxes = Axes.X,
                             Size = new Vector2(1, 10),
 
-                            Colour = new Color4(255, 204, 34, 255),
+                            Colour = new Colour4(255, 204, 34, 255),
 
                             Lines = 6
                         },
diff --git a/osu.Game.Tournament/Screens/Editors/LadderEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/LadderEditorScreen.cs
index 4b12e3bcca60..e0cb736ed0ad 100644
--- a/osu.Game.Tournament/Screens/Editors/LadderEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/LadderEditorScreen.cs
@@ -19,8 +19,7 @@
 using osu.Game.Tournament.Screens.Editors.Components;
 using osu.Game.Tournament.Screens.Ladder;
 using osu.Game.Tournament.Screens.Ladder.Components;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
@@ -167,7 +166,7 @@ protected override bool OnMouseMove(MouseMoveEvent e)
 
                 AddInternal(path = new ProgressionPath(matchesContainer.First(c => c.Match == Source), found)
                 {
-                    Colour = Color4.Yellow,
+                    Colour = Colour4.Yellow,
                 });
 
                 return base.OnMouseMove(e);
diff --git a/osu.Game.Tournament/Screens/Editors/RoundEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/RoundEditorScreen.cs
index 6548a26a5119..6f5807a868be 100644
--- a/osu.Game.Tournament/Screens/Editors/RoundEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/RoundEditorScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -16,7 +17,6 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Editors.Components;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
diff --git a/osu.Game.Tournament/Screens/Editors/SeedingEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/SeedingEditorScreen.cs
index d1e14ecf0cf6..ed68c9e00945 100644
--- a/osu.Game.Tournament/Screens/Editors/SeedingEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/SeedingEditorScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
diff --git a/osu.Game.Tournament/Screens/Editors/TeamEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/TeamEditorScreen.cs
index 581ddd2018f3..d45d4ae823f8 100644
--- a/osu.Game.Tournament/Screens/Editors/TeamEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/TeamEditorScreen.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
@@ -17,7 +18,6 @@
 using osu.Game.Tournament.Screens.Drawings.Components;
 using osu.Game.Tournament.Screens.Editors.Components;
 using osu.Game.Users;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
diff --git a/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
index 0bf5260ceae0..96ba28b47d71 100644
--- a/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
@@ -4,6 +4,7 @@
 using System.Collections.Specialized;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -16,7 +17,6 @@
 using osu.Game.Overlays;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Screens.Editors.Components;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
diff --git a/osu.Game.Tournament/Screens/Gameplay/Components/MatchHeader.cs b/osu.Game.Tournament/Screens/Gameplay/Components/MatchHeader.cs
index 2c5736344587..8e1084eca15f 100644
--- a/osu.Game.Tournament/Screens/Gameplay/Components/MatchHeader.cs
+++ b/osu.Game.Tournament/Screens/Gameplay/Components/MatchHeader.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Gameplay.Components
 {
diff --git a/osu.Game.Tournament/Screens/Gameplay/Components/TeamDisplay.cs b/osu.Game.Tournament/Screens/Gameplay/Components/TeamDisplay.cs
index 91848265e2c9..39a1fe8d99c1 100644
--- a/osu.Game.Tournament/Screens/Gameplay/Components/TeamDisplay.cs
+++ b/osu.Game.Tournament/Screens/Gameplay/Components/TeamDisplay.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Gameplay.Components
 {
diff --git a/osu.Game.Tournament/Screens/Gameplay/Components/TeamScore.cs b/osu.Game.Tournament/Screens/Gameplay/Components/TeamScore.cs
index c154e4fcef63..48707c1a08be 100644
--- a/osu.Game.Tournament/Screens/Gameplay/Components/TeamScore.cs
+++ b/osu.Game.Tournament/Screens/Gameplay/Components/TeamScore.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -10,8 +11,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Tournament.Models;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Gameplay.Components
 {
@@ -68,7 +67,7 @@ public LightSquare()
                             {
                                 new Box
                                 {
-                                    Colour = Color4.Transparent,
+                                    Colour = Colour4.Transparent,
                                     RelativeSizeAxes = Axes.Both,
                                     AlwaysPresent = true,
                                 },
diff --git a/osu.Game.Tournament/Screens/Gameplay/Components/TeamScoreDisplay.cs b/osu.Game.Tournament/Screens/Gameplay/Components/TeamScoreDisplay.cs
index 9576ba38381c..60b95a96258c 100644
--- a/osu.Game.Tournament/Screens/Gameplay/Components/TeamScoreDisplay.cs
+++ b/osu.Game.Tournament/Screens/Gameplay/Components/TeamScoreDisplay.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Game.Tournament.Models;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Screens.Gameplay.Components
 {
@@ -23,7 +23,8 @@ public partial class TeamScoreDisplay : CompositeDrawable
 
         public bool ShowScore
         {
-            get => teamDisplay?.ShowScore ?? false; set => teamDisplay?.ShowScore = value;
+            get => teamDisplay?.ShowScore ?? false;
+            set => teamDisplay?.ShowScore = value;
         }
 
         public TeamScoreDisplay(TeamColour teamColour)
diff --git a/osu.Game.Tournament/Screens/Gameplay/GameplayScreen.cs b/osu.Game.Tournament/Screens/Gameplay/GameplayScreen.cs
index 2cf7ce1961f0..f8cc5d931cb9 100644
--- a/osu.Game.Tournament/Screens/Gameplay/GameplayScreen.cs
+++ b/osu.Game.Tournament/Screens/Gameplay/GameplayScreen.cs
@@ -15,7 +15,6 @@
 using osu.Game.Tournament.Screens.Gameplay.Components;
 using osu.Game.Tournament.Screens.MapPool;
 using osu.Game.Tournament.Screens.TeamWin;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Gameplay
 {
@@ -259,7 +258,7 @@ private partial class ChromaArea : CompositeDrawable
             private void load()
             {
                 // chroma key area for stable gameplay
-                Colour = new Color4(0, 255, 0, 255);
+                Colour = new Colour4(0, 255, 0, 255);
 
                 ladder.PlayersPerTeam.BindValueChanged(performLayout, true);
             }
diff --git a/osu.Game.Tournament/Screens/Ladder/Components/DrawableMatchTeam.cs b/osu.Game.Tournament/Screens/Ladder/Components/DrawableMatchTeam.cs
index ffc9d81a052a..6a1f9a1149dc 100644
--- a/osu.Game.Tournament/Screens/Ladder/Components/DrawableMatchTeam.cs
+++ b/osu.Game.Tournament/Screens/Ladder/Components/DrawableMatchTeam.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
@@ -16,9 +17,7 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Editors;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Screens.Ladder.Components
 {
@@ -33,7 +32,7 @@ public partial class DrawableMatchTeam : DrawableTournamentTeam, IHasContextMenu
         private readonly Bindable<int?> score = new Bindable<int?>();
         private readonly BindableBool completed = new BindableBool();
 
-        private Color4 colourWinner;
+        private Colour4 colourWinner;
 
         private readonly Func<bool>? isWinner;
         private LadderEditorScreen ladderEditor = null!;
@@ -177,10 +176,10 @@ private void updateWinStyle()
         {
             bool winner = completed.Value && isWinner?.Invoke() == true;
 
-            background.FadeColour(winner ? Color4.White : Color4Extensions.FromHex("#444"), winner ? 500 : 0, Easing.OutQuint);
+            background.FadeColour(winner ? Colour4.White : Color4Extensions.FromHex("#444"), winner ? 500 : 0, Easing.OutQuint);
             backgroundRight.FadeColour(winner ? colourWinner : Color4Extensions.FromHex("#333"), winner ? 500 : 0, Easing.OutQuint);
 
-            AcronymText.Colour = winner ? Color4.Black : Color4.White;
+            AcronymText.Colour = winner ? Colour4.Black : Colour4.White;
 
             scoreText.Font = scoreText.Font.With(weight: winner ? FontWeight.Bold : FontWeight.Regular);
         }
diff --git a/osu.Game.Tournament/Screens/Ladder/Components/DrawableTournamentMatch.cs b/osu.Game.Tournament/Screens/Ladder/Components/DrawableTournamentMatch.cs
index ad9d654ce8b1..b5e907148445 100644
--- a/osu.Game.Tournament/Screens/Ladder/Components/DrawableTournamentMatch.cs
+++ b/osu.Game.Tournament/Screens/Ladder/Components/DrawableTournamentMatch.cs
@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Drawing;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -13,9 +14,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Editors;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Screens.Ladder.Components
 {
@@ -65,7 +64,7 @@ public DrawableTournamentMatch(TournamentMatch match, bool editor = false)
                         RelativeSizeAxes = Axes.Both,
                         Alpha = 0,
                         Masking = true,
-                        BorderColour = Color4.YellowGreen,
+                        BorderColour = Colour4.YellowGreen,
                         BorderThickness = border_thickness,
                         Child = new Box
                         {
@@ -85,7 +84,7 @@ public DrawableTournamentMatch(TournamentMatch match, bool editor = false)
                     {
                         RelativeSizeAxes = Axes.Both,
                         Alpha = 0,
-                        BorderColour = Color4.White,
+                        BorderColour = Colour4.White,
                         BorderThickness = border_thickness,
                         Masking = true,
                         Child = new Box
diff --git a/osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs b/osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs
index 775fd4fdf274..8155e2244846 100644
--- a/osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs
+++ b/osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs
@@ -5,6 +5,7 @@
 using System.Collections.Specialized;
 using System.Diagnostics;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -15,7 +16,6 @@
 using osu.Game.Screens.Play.PlayerSettings;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Ladder.Components
 {
diff --git a/osu.Game.Tournament/Screens/Ladder/Components/ProgressionPath.cs b/osu.Game.Tournament/Screens/Ladder/Components/ProgressionPath.cs
index 90efac30fdb2..7dde9fcb375a 100644
--- a/osu.Game.Tournament/Screens/Ladder/Components/ProgressionPath.cs
+++ b/osu.Game.Tournament/Screens/Ladder/Components/ProgressionPath.cs
@@ -1,10 +1,10 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Lines;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Tournament.Screens.Ladder.Components
 {
@@ -26,7 +26,7 @@ protected override void LoadComplete()
         {
             base.LoadComplete();
 
-            static Vector2 getCenteredVector(Vector2 top, Vector2 bottom) => new Vector2(top.X, top.Y + (bottom.Y - top.Y) / 2);
+            static Vector2 getCenteredVector(Vector2 top, Vector2 bottom) => top with { Y = top.Y + (bottom.Y - top.Y) / 2 };
 
             var q1 = Source.ScreenSpaceDrawQuad;
             var q2 = Destination.ScreenSpaceDrawQuad;
diff --git a/osu.Game.Tournament/Screens/Ladder/LadderDragContainer.cs b/osu.Game.Tournament/Screens/Ladder/LadderDragContainer.cs
index 111dede815c3..0e97a128979a 100644
--- a/osu.Game.Tournament/Screens/Ladder/LadderDragContainer.cs
+++ b/osu.Game.Tournament/Screens/Ladder/LadderDragContainer.cs
@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Input.Events;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Tournament.Screens.Ladder
 {
diff --git a/osu.Game.Tournament/Screens/Ladder/LadderScreen.cs b/osu.Game.Tournament/Screens/Ladder/LadderScreen.cs
index 4f56a2fcc910..c64bedd37594 100644
--- a/osu.Game.Tournament/Screens/Ladder/LadderScreen.cs
+++ b/osu.Game.Tournament/Screens/Ladder/LadderScreen.cs
@@ -14,7 +14,6 @@
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Editors;
 using osu.Game.Tournament.Screens.Ladder.Components;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Ladder
 {
@@ -116,8 +115,8 @@ protected override void Update()
                 UpdateLayout();
         }
 
-        private Color4 normalPathColour;
-        private Color4 losersPathColour;
+        private Colour4 normalPathColour;
+        private Colour4 losersPathColour;
 
         protected virtual bool DrawLoserPaths => false;
 
diff --git a/osu.Game.Tournament/Screens/MapPool/MapPoolScreen.cs b/osu.Game.Tournament/Screens/MapPool/MapPoolScreen.cs
index ccb4adbb4657..e3c4a8240a04 100644
--- a/osu.Game.Tournament/Screens/MapPool/MapPoolScreen.cs
+++ b/osu.Game.Tournament/Screens/MapPool/MapPoolScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,9 +15,7 @@
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Gameplay;
 using osu.Game.Tournament.Screens.Gameplay.Components;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament.Screens.MapPool
 {
@@ -146,7 +145,7 @@ private void setMode(TeamColour colour, ChoiceType choiceType)
             buttonRedPick.Colour = setColour(pickColour == TeamColour.Red && pickType == ChoiceType.Pick);
             buttonBluePick.Colour = setColour(pickColour == TeamColour.Blue && pickType == ChoiceType.Pick);
 
-            static Color4 setColour(bool active) => active ? Color4.White : Color4.Gray;
+            static Colour4 setColour(bool active) => active ? Colour4.White : Colour4.Gray;
         }
 
         private void setNextMode()
diff --git a/osu.Game.Tournament/Screens/Schedule/ScheduleScreen.cs b/osu.Game.Tournament/Screens/Schedule/ScheduleScreen.cs
index 848d5108262c..789c74ddd8ee 100644
--- a/osu.Game.Tournament/Screens/Schedule/ScheduleScreen.cs
+++ b/osu.Game.Tournament/Screens/Schedule/ScheduleScreen.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,8 +15,6 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Ladder.Components;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Schedule
 {
@@ -73,7 +72,7 @@ private void load(LadderInfo ladder)
                                                 {
                                                     new Box
                                                     {
-                                                        Colour = Color4.White,
+                                                        Colour = Colour4.White,
                                                         Size = new Vector2(50, 10),
                                                     },
                                                     new TournamentSpriteTextWithBackground("Schedule")
diff --git a/osu.Game.Tournament/Screens/Setup/ActionableInfo.cs b/osu.Game.Tournament/Screens/Setup/ActionableInfo.cs
index 62f945e50d28..cdea5ab53358 100644
--- a/osu.Game.Tournament/Screens/Setup/ActionableInfo.cs
+++ b/osu.Game.Tournament/Screens/Setup/ActionableInfo.cs
@@ -2,12 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Setup
 {
@@ -40,7 +39,7 @@ public string Value
 
         public bool Failing
         {
-            set => valueText.Colour = value ? Color4.Red : Color4.White;
+            set => valueText.Colour = value ? Colour4.Red : Colour4.White;
         }
 
         protected override Drawable CreateComponent() => new Container
diff --git a/osu.Game.Tournament/Screens/Setup/SetupScreen.cs b/osu.Game.Tournament/Screens/Setup/SetupScreen.cs
index 6bed3c87dfb7..5b3f1f279630 100644
--- a/osu.Game.Tournament/Screens/Setup/SetupScreen.cs
+++ b/osu.Game.Tournament/Screens/Setup/SetupScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Drawing;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Configuration;
@@ -16,7 +17,6 @@
 using osu.Game.Rulesets;
 using osu.Game.Tournament.IPC;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Setup
 {
diff --git a/osu.Game.Tournament/Screens/Setup/StablePathSelectScreen.cs b/osu.Game.Tournament/Screens/Setup/StablePathSelectScreen.cs
index 91b03ed08552..dc77bf99b410 100644
--- a/osu.Game.Tournament/Screens/Setup/StablePathSelectScreen.cs
+++ b/osu.Game.Tournament/Screens/Setup/StablePathSelectScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.IO;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,7 +16,6 @@
 using osu.Game.Overlays;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.IPC;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.Setup
 {
diff --git a/osu.Game.Tournament/Screens/Showcase/ShowcaseScreen.cs b/osu.Game.Tournament/Screens/Showcase/ShowcaseScreen.cs
index 23a52726f098..d9d207033ebc 100644
--- a/osu.Game.Tournament/Screens/Showcase/ShowcaseScreen.cs
+++ b/osu.Game.Tournament/Screens/Showcase/ShowcaseScreen.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament.Screens.Showcase
 {
@@ -36,7 +35,7 @@ private void load()
                         Anchor = Anchor.TopCentre,
                         Origin = Anchor.TopCentre,
                         RelativeSizeAxes = Axes.Both,
-                        Colour = new Color4(0, 255, 0, 255),
+                        Colour = new Colour4(0, 255, 0, 255),
                     }
                 }
             });
diff --git a/osu.Game.Tournament/Screens/TeamIntro/SeedingScreen.cs b/osu.Game.Tournament/Screens/TeamIntro/SeedingScreen.cs
index ddfff54ded1a..07164d4f51d3 100644
--- a/osu.Game.Tournament/Screens/TeamIntro/SeedingScreen.cs
+++ b/osu.Game.Tournament/Screens/TeamIntro/SeedingScreen.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Diagnostics;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -14,7 +15,6 @@
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
 using osu.Game.Tournament.Screens.Ladder.Components;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.TeamIntro
 {
diff --git a/osu.Game.Tournament/Screens/TeamIntro/TeamIntroScreen.cs b/osu.Game.Tournament/Screens/TeamIntro/TeamIntroScreen.cs
index 2280f21d4717..a4f1a5c5ebb6 100644
--- a/osu.Game.Tournament/Screens/TeamIntro/TeamIntroScreen.cs
+++ b/osu.Game.Tournament/Screens/TeamIntro/TeamIntroScreen.cs
@@ -1,13 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.TeamIntro
 {
diff --git a/osu.Game.Tournament/Screens/TeamWin/TeamWinScreen.cs b/osu.Game.Tournament/Screens/TeamWin/TeamWinScreen.cs
index af216135418a..9b9de61aad19 100644
--- a/osu.Game.Tournament/Screens/TeamWin/TeamWinScreen.cs
+++ b/osu.Game.Tournament/Screens/TeamWin/TeamWinScreen.cs
@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -8,7 +9,6 @@
 using osu.Game.Graphics;
 using osu.Game.Tournament.Components;
 using osu.Game.Tournament.Models;
-using osuTK;
 
 namespace osu.Game.Tournament.Screens.TeamWin
 {
diff --git a/osu.Game.Tournament/TournamentGame.cs b/osu.Game.Tournament/TournamentGame.cs
index 7a8504eba1e3..a5c19e90a8f9 100644
--- a/osu.Game.Tournament/TournamentGame.cs
+++ b/osu.Game.Tournament/TournamentGame.cs
@@ -16,7 +16,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
 using osu.Game.Tournament.Models;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament
 {
@@ -25,13 +24,13 @@ public partial class TournamentGame : TournamentGameBase
     {
         public static ColourInfo GetTeamColour(TeamColour teamColour) => teamColour == TeamColour.Red ? COLOUR_RED : COLOUR_BLUE;
 
-        public static readonly Color4 COLOUR_RED = new OsuColour().TeamColourRed;
-        public static readonly Color4 COLOUR_BLUE = new OsuColour().TeamColourBlue;
+        public static readonly Colour4 COLOUR_RED = new OsuColour().TeamColourRed;
+        public static readonly Colour4 COLOUR_BLUE = new OsuColour().TeamColourBlue;
 
-        public static readonly Color4 ELEMENT_BACKGROUND_COLOUR = Color4Extensions.FromHex("#fff");
-        public static readonly Color4 ELEMENT_FOREGROUND_COLOUR = Color4Extensions.FromHex("#000");
+        public static readonly Colour4 ELEMENT_BACKGROUND_COLOUR = Color4Extensions.FromHex("#fff");
+        public static readonly Colour4 ELEMENT_FOREGROUND_COLOUR = Color4Extensions.FromHex("#000");
 
-        public static readonly Color4 TEXT_COLOUR = Color4Extensions.FromHex("#fff");
+        public static readonly Colour4 TEXT_COLOUR = Color4Extensions.FromHex("#fff");
         private Drawable heightWarning = null!;
 
         private Bindable<WindowMode> windowMode = null!;
diff --git a/osu.Game.Tournament/TournamentGameBase.cs b/osu.Game.Tournament/TournamentGameBase.cs
index fa9b9f7a8239..63a226f91088 100644
--- a/osu.Game.Tournament/TournamentGameBase.cs
+++ b/osu.Game.Tournament/TournamentGameBase.cs
@@ -22,7 +22,6 @@
 using osu.Game.Tournament.IPC;
 using osu.Game.Tournament.Models;
 using osu.Game.Users;
-using osuTK.Input;
 
 namespace osu.Game.Tournament
 {
diff --git a/osu.Game.Tournament/TournamentSceneManager.cs b/osu.Game.Tournament/TournamentSceneManager.cs
index 8808584063e3..613638935dc0 100644
--- a/osu.Game.Tournament/TournamentSceneManager.cs
+++ b/osu.Game.Tournament/TournamentSceneManager.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -24,9 +25,7 @@
 using osu.Game.Tournament.Screens.Showcase;
 using osu.Game.Tournament.Screens.TeamIntro;
 using osu.Game.Tournament.Screens.TeamWin;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Tournament
 {
@@ -75,7 +74,7 @@ private void load()
                     {
                         new Box
                         {
-                            Colour = new Color4(20, 20, 20, 255),
+                            Colour = new Colour4(20, 20, 20, 255),
                             Anchor = Anchor.TopRight,
                             RelativeSizeAxes = Axes.Both,
                             Width = 10,
@@ -120,7 +119,7 @@ private void load()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                         },
                         buttons = new FillFlowContainer
@@ -311,8 +310,8 @@ public bool IsSelected
                         return;
 
                     field = value;
-                    BackgroundColour = field ? Color4.SkyBlue : OsuColour.Gray(0.2f);
-                    SpriteText.Colour = field ? Color4.Black : Color4.White;
+                    BackgroundColour = field ? Colour4.SkyBlue : OsuColour.Gray(0.2f);
+                    SpriteText.Colour = field ? Colour4.Black : Colour4.White;
                 }
             }
         }
diff --git a/osu.Game.Tournament/WarningBox.cs b/osu.Game.Tournament/WarningBox.cs
index a79e97914b8a..cd38dc41c90d 100644
--- a/osu.Game.Tournament/WarningBox.cs
+++ b/osu.Game.Tournament/WarningBox.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Tournament
 {
@@ -24,14 +23,14 @@ public WarningBox(string text)
             {
                 new Box
                 {
-                    Colour = Color4.Red,
+                    Colour = Colour4.Red,
                     RelativeSizeAxes = Axes.Both,
                 },
                 new TournamentSpriteText
                 {
                     Text = text,
                     Font = OsuFont.Torus.With(weight: FontWeight.Bold),
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Padding = new MarginPadding(20)
                 }
             };
diff --git a/osu.Game/Beatmaps/ControlPoints/ControlPoint.cs b/osu.Game/Beatmaps/ControlPoints/ControlPoint.cs
index 41d6ccbc3e62..1d9be54d05ef 100644
--- a/osu.Game/Beatmaps/ControlPoints/ControlPoint.cs
+++ b/osu.Game/Beatmaps/ControlPoints/ControlPoint.cs
@@ -6,7 +6,7 @@
 using Newtonsoft.Json;
 using osu.Game.Graphics;
 using osu.Game.Utils;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
@@ -38,7 +38,7 @@ public double Time
 
         public int CompareTo(ControlPoint? other) => Time.CompareTo(other?.Time);
 
-        public virtual Color4 GetRepresentingColour(OsuColour colours) => colours.Yellow;
+        public virtual Colour4 GetRepresentingColour(OsuColour colours) => colours.Yellow;
 
         /// <summary>
         /// Determines whether this <see cref="ControlPoint"/> results in a meaningful change when placed alongside another.
diff --git a/osu.Game/Beatmaps/ControlPoints/DifficultyControlPoint.cs b/osu.Game/Beatmaps/ControlPoints/DifficultyControlPoint.cs
index 9f8ed1b3964c..1a17cd0f1ff7 100644
--- a/osu.Game/Beatmaps/ControlPoints/DifficultyControlPoint.cs
+++ b/osu.Game/Beatmaps/ControlPoints/DifficultyControlPoint.cs
@@ -4,7 +4,7 @@
 using System;
 using osu.Framework.Bindables;
 using osu.Game.Graphics;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
@@ -33,7 +33,7 @@ public class DifficultyControlPoint : ControlPoint, IEquatable<DifficultyControl
         /// </summary>
         public bool GenerateTicks { get; set; } = true;
 
-        public override Color4 GetRepresentingColour(OsuColour colours) => colours.Lime1;
+        public override Colour4 GetRepresentingColour(OsuColour colours) => colours.Lime1;
 
         /// <summary>
         /// The slider velocity at this control point.
diff --git a/osu.Game/Beatmaps/ControlPoints/EffectControlPoint.cs b/osu.Game/Beatmaps/ControlPoints/EffectControlPoint.cs
index 4b73994dcf36..8426e7d23c18 100644
--- a/osu.Game/Beatmaps/ControlPoints/EffectControlPoint.cs
+++ b/osu.Game/Beatmaps/ControlPoints/EffectControlPoint.cs
@@ -4,7 +4,7 @@
 using System;
 using osu.Framework.Bindables;
 using osu.Game.Graphics;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
@@ -34,7 +34,7 @@ public double ScrollSpeed
             set => ScrollSpeedBindable.Value = value;
         }
 
-        public override Color4 GetRepresentingColour(OsuColour colours) => colours.Orange1;
+        public override Colour4 GetRepresentingColour(OsuColour colours) => colours.Orange1;
 
         /// <summary>
         /// Whether this control point enables Kiai mode.
diff --git a/osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs b/osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs
index 800d9f9abc95..5dfe5eb7a290 100644
--- a/osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs
+++ b/osu.Game/Beatmaps/ControlPoints/SampleControlPoint.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Bindables;
 using osu.Game.Audio;
 using osu.Game.Graphics;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
@@ -22,7 +22,7 @@ public class SampleControlPoint : ControlPoint, IEquatable<SampleControlPoint>
             SampleVolumeBindable = { Disabled = true }
         };
 
-        public override Color4 GetRepresentingColour(OsuColour colours) => colours.Pink;
+        public override Colour4 GetRepresentingColour(OsuColour colours) => colours.Pink;
 
         /// <summary>
         /// The default sample bank at this control point.
diff --git a/osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs b/osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs
index db1d440f1844..0e580de32fdd 100644
--- a/osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs
+++ b/osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Bindables;
 using osu.Game.Beatmaps.Timing;
 using osu.Game.Graphics;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.ControlPoints
 {
@@ -26,7 +26,7 @@ public class TimingControlPoint : ControlPoint, IEquatable<TimingControlPoint>
         /// </summary>
         private const double default_beat_length = 60000.0 / 60.0;
 
-        public override Color4 GetRepresentingColour(OsuColour colours) => colours.Red2;
+        public override Colour4 GetRepresentingColour(OsuColour colours) => colours.Red2;
 
         public static readonly TimingControlPoint DEFAULT = new TimingControlPoint
         {
diff --git a/osu.Game/Beatmaps/Drawables/BeatmapSetOnlineStatusPill.cs b/osu.Game/Beatmaps/Drawables/BeatmapSetOnlineStatusPill.cs
index b01e7acd73ab..26bf3e27d303 100644
--- a/osu.Game/Beatmaps/Drawables/BeatmapSetOnlineStatusPill.cs
+++ b/osu.Game/Beatmaps/Drawables/BeatmapSetOnlineStatusPill.cs
@@ -13,7 +13,6 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
@@ -77,7 +76,7 @@ public BeatmapSetOnlineStatusPill()
                 background = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
                 statusText = new OsuSpriteText
                 {
@@ -125,12 +124,12 @@ private void updateState()
             if (Alpha == 0)
                 duration = 0;
 
-            Color4 statusTextColour;
+            Colour4 statusTextColour;
 
             if (colourProvider != null)
                 statusTextColour = Status == BeatmapOnlineStatus.Graveyard ? colourProvider.Background1 : colourProvider.Background3;
             else
-                statusTextColour = Status == BeatmapOnlineStatus.Graveyard ? colours.GreySeaFoamLight : Color4.Black;
+                statusTextColour = Status == BeatmapOnlineStatus.Graveyard ? colours.GreySeaFoamLight : Colour4.Black;
 
             statusText.FadeColour(statusTextColour, duration, Easing.OutQuint);
             background.FadeColour(OsuColour.ForBeatmapSetOnlineStatus(Status) ?? colourProvider?.Light1 ?? colours.GreySeaFoamLighter, duration, Easing.OutQuint);
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardContent.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardContent.cs
index 7deb5f768cb2..a9b3510ba439 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardContent.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardContent.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Threading;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardDifficultyList.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardDifficultyList.cs
index 5d0e3891c92f..c0deab9bb5e6 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardDifficultyList.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardDifficultyList.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.Chat;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtra.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtra.cs
index c194d186df2c..986f7566c253 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtra.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtra.cs
@@ -17,7 +17,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtraInfoRow.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtraInfoRow.cs
index ee2f68270882..344c4b98975d 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtraInfoRow.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardExtraInfoRow.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNano.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNano.cs
index c23a03aabee1..9a99935cdaf2 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNano.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNano.cs
@@ -15,7 +15,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNormal.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNormal.cs
index 50a912e9d457..9138b19661db 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNormal.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardNormal.cs
@@ -18,7 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardThumbnail.cs b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardThumbnail.cs
index 6b3d298891e6..ad0818f8f147 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardThumbnail.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/BeatmapCardThumbnail.cs
@@ -3,14 +3,13 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Beatmaps.Drawables.Cards.Buttons;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/Buttons/BeatmapCardIconButton.cs b/osu.Game/Beatmaps/Drawables/Cards/Buttons/BeatmapCardIconButton.cs
index 0635358e86d1..db6478ba0fda 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/Buttons/BeatmapCardIconButton.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/Buttons/BeatmapCardIconButton.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -10,8 +9,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards.Buttons
 {
@@ -63,7 +61,7 @@ private void load(OverlayColourProvider colourProvider)
                         RelativeSizeAxes = Axes.Both,
                         CornerRadius = BeatmapCard.CORNER_RADIUS,
                         Masking = true,
-                        Colour = Color4.White.Opacity(0.1f),
+                        Colour = Colour4.White.Opacity(0.1f),
                         Blending = BlendingParameters.Additive,
                         Child = new Box { RelativeSizeAxes = Axes.Both, }
                     },
diff --git a/osu.Game/Beatmaps/Drawables/Cards/Buttons/PlayButton.cs b/osu.Game/Beatmaps/Drawables/Cards/Buttons/PlayButton.cs
index f6caf4815d67..6af5ad2ad2b5 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/Buttons/PlayButton.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/Buttons/PlayButton.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards.Buttons
 {
diff --git a/osu.Game/Beatmaps/Drawables/Cards/IconPill.cs b/osu.Game/Beatmaps/Drawables/Cards/IconPill.cs
index 7cdd50e7ea34..a6bd832cd75c 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/IconPill.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/IconPill.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards
 {
@@ -38,7 +37,7 @@ protected IconPill(IconUsage icon)
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.5f,
                 },
                 iconContainer = new Container
diff --git a/osu.Game/Beatmaps/Drawables/Cards/Statistics/BeatmapCardStatistic.cs b/osu.Game/Beatmaps/Drawables/Cards/Statistics/BeatmapCardStatistic.cs
index ece52d0fa91c..4abd1de57afd 100644
--- a/osu.Game/Beatmaps/Drawables/Cards/Statistics/BeatmapCardStatistic.cs
+++ b/osu.Game/Beatmaps/Drawables/Cards/Statistics/BeatmapCardStatistic.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables.Cards.Statistics
 {
diff --git a/osu.Game/Beatmaps/Drawables/DifficultyIcon.cs b/osu.Game/Beatmaps/Drawables/DifficultyIcon.cs
index 92db97475a1b..60a633f87afc 100644
--- a/osu.Game/Beatmaps/Drawables/DifficultyIcon.cs
+++ b/osu.Game/Beatmaps/Drawables/DifficultyIcon.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
@@ -91,7 +89,7 @@ private void load()
                     Masking = true,
                     EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = Color4.Black.Opacity(0.06f),
+                        Colour = Colour4.Black.Opacity(0.06f),
                         Type = EdgeEffectType.Shadow,
                         Radius = 3,
                     },
diff --git a/osu.Game/Beatmaps/Drawables/DifficultyIconTooltip.cs b/osu.Game/Beatmaps/Drawables/DifficultyIconTooltip.cs
index 280185ba171b..6ee16a45de91 100644
--- a/osu.Game/Beatmaps/Drawables/DifficultyIconTooltip.cs
+++ b/osu.Game/Beatmaps/Drawables/DifficultyIconTooltip.cs
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
diff --git a/osu.Game/Beatmaps/Drawables/DifficultySpectrumDisplay.cs b/osu.Game/Beatmaps/Drawables/DifficultySpectrumDisplay.cs
index cfdd40dedfcf..ebb0b54d1988 100644
--- a/osu.Game/Beatmaps/Drawables/DifficultySpectrumDisplay.cs
+++ b/osu.Game/Beatmaps/Drawables/DifficultySpectrumDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
diff --git a/osu.Game/Beatmaps/Drawables/DownloadProgressBar.cs b/osu.Game/Beatmaps/Drawables/DownloadProgressBar.cs
index 55af57a45fd1..cf004f94c531 100644
--- a/osu.Game/Beatmaps/Drawables/DownloadProgressBar.cs
+++ b/osu.Game/Beatmaps/Drawables/DownloadProgressBar.cs
@@ -2,13 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online;
-using osuTK.Graphics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
@@ -37,7 +35,7 @@ public DownloadProgressBar(IBeatmapSetInfo beatmapSet)
         private void load(OsuColour colours)
         {
             progressBar.FillColour = colours.Blue;
-            progressBar.BackgroundColour = Color4.Black.Opacity(0.7f);
+            progressBar.BackgroundColour = Colour4.Black.Opacity(0.7f);
             progressBar.Current.BindTarget = downloadTracker.Progress;
 
             downloadTracker.State.BindValueChanged(state =>
diff --git a/osu.Game/Beatmaps/Drawables/StarRatingDisplay.cs b/osu.Game/Beatmaps/Drawables/StarRatingDisplay.cs
index 991654638ff6..5bba263d9fad 100644
--- a/osu.Game/Beatmaps/Drawables/StarRatingDisplay.cs
+++ b/osu.Game/Beatmaps/Drawables/StarRatingDisplay.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Drawables
 {
@@ -39,13 +38,13 @@ public Bindable<StarDifficulty> Current
         /// The difficulty colour currently displayed.
         /// Can be used to have other components match the spectrum animation.
         /// </summary>
-        public Color4 DisplayedDifficultyColour => background.Colour;
+        public Colour4 DisplayedDifficultyColour => background.Colour;
 
         /// <summary>
         /// The difficulty text colour currently displayed.
         /// Can be used to have other components match the spectrum animation.
         /// </summary>
-        public Color4 DisplayedDifficultyTextColour => starsText.Colour;
+        public Colour4 DisplayedDifficultyTextColour => starsText.Colour;
 
         private readonly Bindable<double> displayedStars = new BindableDouble();
 
diff --git a/osu.Game/Beatmaps/Formats/IHasComboColours.cs b/osu.Game/Beatmaps/Formats/IHasComboColours.cs
index 1608adee7d44..169ee4643755 100644
--- a/osu.Game/Beatmaps/Formats/IHasComboColours.cs
+++ b/osu.Game/Beatmaps/Formats/IHasComboColours.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.Formats
 {
@@ -11,13 +11,13 @@ public interface IHasComboColours
         /// <summary>
         /// Retrieves the list of combo colours for presentation only.
         /// </summary>
-        IReadOnlyList<Color4>? ComboColours { get; }
+        IReadOnlyList<Colour4>? ComboColours { get; }
 
         /// <summary>
         /// The list of custom combo colours.
         /// If non-empty, <see cref="ComboColours"/> will return these colours;
         /// if empty, <see cref="ComboColours"/> will fall back to default combo colours.
         /// </summary>
-        List<Color4> CustomComboColours { get; }
+        List<Colour4> CustomComboColours { get; }
     }
 }
diff --git a/osu.Game/Beatmaps/Formats/IHasCustomColours.cs b/osu.Game/Beatmaps/Formats/IHasCustomColours.cs
index 9f2eeff25313..6b46ed8d8cbf 100644
--- a/osu.Game/Beatmaps/Formats/IHasCustomColours.cs
+++ b/osu.Game/Beatmaps/Formats/IHasCustomColours.cs
@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.Formats
 {
     public interface IHasCustomColours
     {
-        Dictionary<string, Color4> CustomColours { get; }
+        Dictionary<string, Colour4> CustomColours { get; }
     }
 }
diff --git a/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs b/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
index 5687c5045b78..42db43c4078a 100644
--- a/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
@@ -14,8 +14,8 @@
 using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.Formats
 {
@@ -356,7 +356,7 @@ void extractSampleControlPoints(IEnumerable<HitObject> hitObject)
 
         private void handleColours(TextWriter writer)
         {
-            var colours = skin?.GetConfig<GlobalSkinColours, IReadOnlyList<Color4>>(GlobalSkinColours.ComboColours)?.Value;
+            var colours = skin?.GetConfig<GlobalSkinColours, IReadOnlyList<Colour4>>(GlobalSkinColours.ComboColours)?.Value;
 
             if (colours == null || colours.Count == 0)
                 return;
diff --git a/osu.Game/Beatmaps/Formats/LegacyDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
index 6fb762b9ee52..3321cbea1a77 100644
--- a/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
@@ -9,7 +9,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.IO;
 using osu.Game.Rulesets.Objects.Legacy;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Beatmaps.Formats
 {
@@ -103,17 +103,17 @@ protected string StripComments(string line)
             return line;
         }
 
-        private Color4 convertSettingStringToColor4(string[] split, bool allowAlpha, KeyValuePair<string, string> pair)
+        private Colour4 convertSettingStringToColor4(string[] split, bool allowAlpha, KeyValuePair<string, string> pair)
         {
             if (split.Length != 3 && split.Length != 4)
                 throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B or R,G,B,A): {pair.Value}");
 
-            Color4 colour;
+            Colour4 colour;
 
             try
             {
                 byte alpha = allowAlpha && split.Length == 4 ? byte.Parse(split[3]) : (byte)255;
-                colour = new Color4(byte.Parse(split[0]), byte.Parse(split[1]), byte.Parse(split[2]), alpha);
+                colour = new Colour4(byte.Parse(split[0]), byte.Parse(split[1]), byte.Parse(split[2]), alpha);
             }
             catch
             {
@@ -128,7 +128,7 @@ protected void HandleColours<TModel>(TModel output, string line, bool allowAlpha
             var pair = SplitKeyVal(line);
 
             string[] split = pair.Value.Split(',');
-            Color4 colour = convertSettingStringToColor4(split, allowAlpha, pair);
+            Colour4 colour = convertSettingStringToColor4(split, allowAlpha, pair);
 
             bool isCombo = pair.Key.StartsWith(@"Combo", StringComparison.Ordinal)
                            && int.TryParse(pair.Key[5..], out int comboIndex)
@@ -150,13 +150,16 @@ protected void HandleColours<TModel>(TModel output, string line, bool allowAlpha
 
         protected KeyValuePair<string, string> SplitKeyVal(string line, char separator = ':', bool shouldTrim = true)
         {
-            string[] split = line.Split(separator, 2, shouldTrim ? StringSplitOptions.TrimEntries : StringSplitOptions.None);
+            int idx = line.IndexOf(separator);
 
-            return new KeyValuePair<string, string>
-            (
-                split[0],
-                split.Length > 1 ? split[1] : string.Empty
-            );
+            if (idx < 0)
+                return new KeyValuePair<string, string>(shouldTrim ? line.Trim() : line, string.Empty);
+
+            // Use AsSpan().Trim() so the trim scan is done on a span before materialising
+            // a single string — avoids creating an intermediate substring just to trim it.
+            string key = shouldTrim ? line.AsSpan(0, idx).Trim().ToString() : line[..idx];
+            string val = shouldTrim ? line.AsSpan(idx + 1).Trim().ToString() : line[(idx + 1)..];
+            return new KeyValuePair<string, string>(key, val);
         }
 
         protected string CleanFilename(string path) => path
diff --git a/osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs
index 7ee101007972..d461a8633d10 100644
--- a/osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs
@@ -11,8 +11,7 @@
 using osu.Game.Storyboards;
 using osu.Game.Storyboards.Commands;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Beatmaps.Formats
 {
@@ -286,8 +285,8 @@ private void handleEvents(string line)
                                 float endGreen = split.Length > 8 ? Parsing.ParseFloat(split[8]) : startGreen;
                                 float endBlue = split.Length > 9 ? Parsing.ParseFloat(split[9]) : startBlue;
                                 currentCommandsGroup?.AddColour(easing, startTime, endTime,
-                                    new Color4(startRed / 255f, startGreen / 255f, startBlue / 255f, 1),
-                                    new Color4(endRed / 255f, endGreen / 255f, endBlue / 255f, 1));
+                                    new Colour4(startRed / 255f, startGreen / 255f, startBlue / 255f, 1),
+                                    new Colour4(endRed / 255f, endGreen / 255f, endBlue / 255f, 1));
                                 break;
                             }
 
diff --git a/osu.Game/Beatmaps/Formats/Parsing.cs b/osu.Game/Beatmaps/Formats/Parsing.cs
index a1683ced0d82..7907c962ad3b 100644
--- a/osu.Game/Beatmaps/Formats/Parsing.cs
+++ b/osu.Game/Beatmaps/Formats/Parsing.cs
@@ -16,6 +16,9 @@ public static class Parsing
         public const double MAX_PARSE_VALUE = int.MaxValue;
 
         public static float ParseFloat(string input, float parseLimit = (float)MAX_PARSE_VALUE, bool allowNaN = false)
+            => ParseFloat(input.AsSpan(), parseLimit, allowNaN);
+
+        public static float ParseFloat(ReadOnlySpan<char> input, float parseLimit = (float)MAX_PARSE_VALUE, bool allowNaN = false)
         {
             float output = float.Parse(input, CultureInfo.InvariantCulture);
 
@@ -28,6 +31,9 @@ public static float ParseFloat(string input, float parseLimit = (float)MAX_PARSE
         }
 
         public static double ParseDouble(string input, double parseLimit = MAX_PARSE_VALUE, bool allowNaN = false)
+            => ParseDouble(input.AsSpan(), parseLimit, allowNaN);
+
+        public static double ParseDouble(ReadOnlySpan<char> input, double parseLimit = MAX_PARSE_VALUE, bool allowNaN = false)
         {
             double output = double.Parse(input, CultureInfo.InvariantCulture);
 
@@ -40,6 +46,9 @@ public static double ParseDouble(string input, double parseLimit = MAX_PARSE_VAL
         }
 
         public static int ParseInt(string input, int parseLimit = (int)MAX_PARSE_VALUE)
+            => ParseInt(input.AsSpan(), parseLimit);
+
+        public static int ParseInt(ReadOnlySpan<char> input, int parseLimit = (int)MAX_PARSE_VALUE)
         {
             int output = int.Parse(input, CultureInfo.InvariantCulture);
 
diff --git a/osu.Game/Collections/DrawableCollectionList.cs b/osu.Game/Collections/DrawableCollectionList.cs
index 5c79549c0a80..91bab6789474 100644
--- a/osu.Game/Collections/DrawableCollectionList.cs
+++ b/osu.Game/Collections/DrawableCollectionList.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Database;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Collections
diff --git a/osu.Game/Collections/DrawableCollectionListItem.cs b/osu.Game/Collections/DrawableCollectionListItem.cs
index 591eee6c34d6..3ab6db31b0c0 100644
--- a/osu.Game/Collections/DrawableCollectionListItem.cs
+++ b/osu.Game/Collections/DrawableCollectionListItem.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -19,8 +18,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Collections
 {
@@ -253,7 +251,7 @@ protected override void OnHoverLost(HoverLostEvent e)
 
             protected override bool OnClick(ClickEvent e)
             {
-                background.FlashColour(Color4.White, 150);
+                background.FlashColour(Colour4.White, 150);
 
                 return base.OnClick(e);
             }
diff --git a/osu.Game/Collections/ManageCollectionsDialog.cs b/osu.Game/Collections/ManageCollectionsDialog.cs
index 958e16954292..9f6cfc700c02 100644
--- a/osu.Game/Collections/ManageCollectionsDialog.cs
+++ b/osu.Game/Collections/ManageCollectionsDialog.cs
@@ -15,7 +15,7 @@
 using osu.Game.Localisation;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Collections
 {
diff --git a/osu.Game/Database/LegacyBeatmapExporter.cs b/osu.Game/Database/LegacyBeatmapExporter.cs
index 6fb8fd60de0a..e0bb50f6e30a 100644
--- a/osu.Game/Database/LegacyBeatmapExporter.cs
+++ b/osu.Game/Database/LegacyBeatmapExporter.cs
@@ -19,7 +19,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Database
 {
diff --git a/osu.Game/Database/RealmAccess.cs b/osu.Game/Database/RealmAccess.cs
index 8806021ae88e..4fb4bf4da2fe 100644
--- a/osu.Game/Database/RealmAccess.cs
+++ b/osu.Game/Database/RealmAccess.cs
@@ -34,7 +34,7 @@
 using osu.Game.Scoring.Legacy;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK.Input;
+using osu.Framework.Input;
 using Realms;
 using Realms.Exceptions;
 
diff --git a/osu.Game/Extensions/DrawableExtensions.cs b/osu.Game/Extensions/DrawableExtensions.cs
index 99d748b267ec..eb1d6f1941b8 100644
--- a/osu.Game/Extensions/DrawableExtensions.cs
+++ b/osu.Game/Extensions/DrawableExtensions.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Extensions
 {
diff --git a/osu.Game/Graphics/Backgrounds/Background.cs b/osu.Game/Graphics/Backgrounds/Background.cs
index bc2ad81fefb3..1fd8422ba752 100644
--- a/osu.Game/Graphics/Backgrounds/Background.cs
+++ b/osu.Game/Graphics/Backgrounds/Background.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Graphics.Transforms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Backgrounds
 {
@@ -74,23 +74,22 @@ public void BlurTo(Vector2 newBlurSigma, double duration = 0, Easing easing = Ea
         private void transformBlurSigma(Vector2 newBlurSigma, double duration, Easing easing)
             => this.TransformTo(nameof(blurSigma), newBlurSigma, duration, easing);
 
-        private Vector2 blurSigmaBacking = Vector2.Zero;
         private Vector2 blurScale = Vector2.One;
 
         private Vector2 blurSigma
         {
-            get => blurSigmaBacking;
+            get => field;
             set
             {
                 Debug.Assert(bufferedContainer != null);
 
-                blurSigmaBacking = value;
+                field = value;
                 blurScale = new Vector2(calculateBlurDownscale(value.X), calculateBlurDownscale(value.Y));
 
                 bufferedContainer.FrameBufferScale = blurScale;
                 bufferedContainer.BlurSigma = value * blurScale; // If the image is scaled down, the blur radius also needs to be reduced to cover the same pixel block.
             }
-        }
+        } = Vector2.Zero;
 
         /// <summary>
         /// Determines a factor to downscale the background based on a given blur sigma, in order to reduce the computational complexity of blurs.
diff --git a/osu.Game/Graphics/Backgrounds/Triangles.cs b/osu.Game/Graphics/Backgrounds/Triangles.cs
index 3f4f503a148f..7678d762560e 100644
--- a/osu.Game/Graphics/Backgrounds/Triangles.cs
+++ b/osu.Game/Graphics/Backgrounds/Triangles.cs
@@ -15,8 +15,7 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Backgrounds
 {
@@ -30,9 +29,9 @@ public partial class Triangles : Drawable
         /// </summary>
         private const float equilateral_triangle_ratio = 0.866f;
 
-        private Color4 colourLight = Color4.White;
+        private Colour4 colourLight = Colour4.White;
 
-        public Color4 ColourLight
+        public Colour4 ColourLight
         {
             get => colourLight;
             set
@@ -44,9 +43,9 @@ public Color4 ColourLight
             }
         }
 
-        private Color4 colourDark = Color4.Black;
+        private Colour4 colourDark = Colour4.Black;
 
-        public Color4 ColourDark
+        public Colour4 ColourDark
         {
             get => colourDark;
             set
@@ -165,7 +164,7 @@ protected override void Update()
                     particle.Position.Y = newY;
                 }
 
-                particle.Colour.A = adjustedAlpha;
+                particle.Colour = new Colour4(particle.Colour.R, particle.Colour.G, particle.Colour.B, adjustedAlpha);
                 parts[i] = particle;
             }
 
@@ -254,7 +253,7 @@ protected virtual TriangleParticle CreateTriangle()
         /// Creates a shade of colour for the triangles.
         /// </summary>
         /// <returns>The colour.</returns>
-        protected virtual Color4 CreateTriangleShade(float shade) => Interpolation.ValueAt(shade, colourDark, colourLight, 0, 1);
+        protected virtual Colour4 CreateTriangleShade(float shade) => Interpolation.ValueAt(shade, colourDark, colourLight, 0, 1);
 
         private void updateColours()
         {
@@ -395,7 +394,7 @@ protected struct TriangleParticle : IComparable<TriangleParticle>
             /// <summary>
             /// The colour of the triangle.
             /// </summary>
-            public Color4 Colour;
+            public Colour4 Colour;
 
             /// <summary>
             /// The scale of the triangle.
diff --git a/osu.Game/Graphics/Backgrounds/TrianglesV2.cs b/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
index 358e859cc8cb..7f3acc3172ef 100644
--- a/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
+++ b/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Backgrounds
 {
@@ -225,7 +225,7 @@ public override void ApplyState()
                 Quad triangleQuad = new Quad(
                     Vector2Extensions.Transform(Vector2.Zero, DrawInfo.Matrix),
                     Vector2Extensions.Transform(new Vector2(triangle_size, 0f), DrawInfo.Matrix),
-                    Vector2Extensions.Transform(new Vector2(0f, triangleSize.Y), DrawInfo.Matrix),
+                    Vector2Extensions.Transform(triangleSize with { X = 0f }, DrawInfo.Matrix),
                     Vector2Extensions.Transform(triangleSize, DrawInfo.Matrix)
                 );
 
diff --git a/osu.Game/Graphics/Carousel/Carousel.ScrollContainer.cs b/osu.Game/Graphics/Carousel/Carousel.ScrollContainer.cs
index 625c246c4e97..8aeda80298d6 100644
--- a/osu.Game/Graphics/Carousel/Carousel.ScrollContainer.cs
+++ b/osu.Game/Graphics/Carousel/Carousel.ScrollContainer.cs
@@ -16,9 +16,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Carousel
 {
@@ -236,9 +234,9 @@ private void beginAbsoluteScrolling(UIEvent e)
 
             private partial class ScrollBar : ScrollbarContainer
             {
-                private Color4 hoverColour;
-                private Color4 defaultColour;
-                private Color4 highlightColour;
+                private Colour4 hoverColour;
+                private Colour4 defaultColour;
+                private Colour4 highlightColour;
 
                 private readonly Drawable box;
 
diff --git a/osu.Game/Graphics/Carousel/Carousel.cs b/osu.Game/Graphics/Carousel/Carousel.cs
index 7bf8de104eb2..e04788107c3b 100644
--- a/osu.Game/Graphics/Carousel/Carousel.cs
+++ b/osu.Game/Graphics/Carousel/Carousel.cs
@@ -26,8 +26,8 @@
 using osu.Framework.Utils;
 using osu.Game.Input.Bindings;
 using osu.Game.Online.Multiplayer;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Graphics.Carousel
 {
diff --git a/osu.Game/Graphics/Containers/ConstrainedIconContainer.cs b/osu.Game/Graphics/Containers/ConstrainedIconContainer.cs
index e39aaaf59f8d..cd674541c728 100644
--- a/osu.Game/Graphics/Containers/ConstrainedIconContainer.cs
+++ b/osu.Game/Graphics/Containers/ConstrainedIconContainer.cs
@@ -4,7 +4,7 @@
 using System;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
diff --git a/osu.Game/Graphics/Containers/LogoTrackingContainer.cs b/osu.Game/Graphics/Containers/LogoTrackingContainer.cs
index 3f509988b82a..617330ea1c7d 100644
--- a/osu.Game/Graphics/Containers/LogoTrackingContainer.cs
+++ b/osu.Game/Graphics/Containers/LogoTrackingContainer.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Game.Screens.Menu;
-using osuTK;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -24,7 +23,7 @@ public partial class LogoTrackingContainer : Container
         private readonly InternalFacade facade = new InternalFacade();
 
         private Easing easing;
-        private Vector2? startPosition;
+        private System.Numerics.Vector2? startPosition;
         private double? startTime;
         private double duration;
 
@@ -72,11 +71,11 @@ void stopTracking()
         /// Manually performs a conversion of the Facade's position to the Logo's parent's relative space.
         /// </summary>
         /// <remarks>Will only be correct if the logo's <see cref="Drawable.RelativePositionAxes"/> are set to Axes.Both</remarks>
-        protected Vector2 ComputeLogoTrackingPosition()
+        protected System.Numerics.Vector2 ComputeLogoTrackingPosition()
         {
             var absolutePos = Logo!.Parent!.ToLocalSpace(LogoFacade.ScreenSpaceDrawQuad.Centre);
 
-            return new Vector2(absolutePos.X / Logo.Parent!.RelativeToAbsoluteFactor.X,
+            return new System.Numerics.Vector2(absolutePos.X / Logo.Parent!.RelativeToAbsoluteFactor.X,
                 absolutePos.Y / Logo.Parent!.RelativeToAbsoluteFactor.Y);
         }
 
@@ -91,7 +90,7 @@ protected override void UpdateAfterChildren()
                 throw new InvalidOperationException($"Tracking logo must have {nameof(RelativePositionAxes)} = Axes.Both");
 
             // Account for the scale of the actual OsuLogo, as SizeForFlow only accounts for the sprite scale.
-            facade.SetSize(new Vector2(Logo.SizeForFlow * Logo.Scale.X));
+            facade.SetSize(new System.Numerics.Vector2(Logo.SizeForFlow * Logo.Scale.X));
 
             var localPos = ComputeLogoTrackingPosition();
 
@@ -111,7 +110,7 @@ protected override void UpdateAfterChildren()
                     float amount = (float)Interpolation.ApplyEasing(easing, Math.Min(elapsedDuration / duration, 1));
 
                     // Interpolate the position of the logo, where amount 0 is where the logo was when it first began interpolating, and amount 1 is the target location.
-                    Logo.Position = Vector2.Lerp(startPosition.Value, localPos, amount);
+                    Logo.Position = System.Numerics.Vector2.Lerp(startPosition.Value, localPos, amount);
                 }
                 else
                 {
@@ -129,7 +128,7 @@ protected override void Dispose(bool isDisposing)
 
         private partial class InternalFacade : Facade
         {
-            public new void SetSize(Vector2 size)
+            public new void SetSize(System.Numerics.Vector2 size)
             {
                 base.SetSize(size);
             }
@@ -140,13 +139,13 @@ private partial class InternalFacade : Facade
         /// </summary>
         public abstract partial class Facade : Drawable
         {
-            public override Vector2 Size
+            public override System.Numerics.Vector2 Size
             {
                 get => base.Size;
                 set => throw new InvalidOperationException($"Cannot set the Size of a {typeof(Facade)} outside of a {typeof(LogoTrackingContainer)}");
             }
 
-            protected void SetSize(Vector2 size)
+            protected void SetSize(System.Numerics.Vector2 size)
             {
                 base.Size = size;
             }
diff --git a/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteBacklink.cs b/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteBacklink.cs
index 22c02ea7200a..acec6de545e3 100644
--- a/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteBacklink.cs
+++ b/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteBacklink.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Testing;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers.Markdown.Footnotes
 {
diff --git a/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteTooltip.cs b/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteTooltip.cs
index b9725de5f498..db688ca48a93 100644
--- a/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteTooltip.cs
+++ b/osu.Game/Graphics/Containers/Markdown/Footnotes/OsuMarkdownFootnoteTooltip.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Graphics.Containers.Markdown.Footnotes
 {
@@ -45,7 +44,7 @@ public OsuMarkdownFootnoteTooltip(OverlayColourProvider colourProvider)
             };
         }
 
-        public void Move(Vector2 pos) => Position = pos;
+        public void Move(System.Numerics.Vector2 pos) => Position = pos;
 
         public void SetContent(object content) => markdownContainer.SetContent((string)content);
 
diff --git a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownContainer.cs b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownContainer.cs
index d465e5343289..4d59bfcc4bb4 100644
--- a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownContainer.cs
+++ b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownContainer.cs
@@ -14,7 +14,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Containers.Markdown.Footnotes;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers.Markdown
 {
diff --git a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownListItem.cs b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownListItem.cs
index 2d38e44d322b..b75458d231c4 100644
--- a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownListItem.cs
+++ b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownListItem.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Containers.Markdown;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers.Markdown
 {
diff --git a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
index dbc358882c58..2913bff30495 100644
--- a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
+++ b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
@@ -18,7 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers.Markdown
 {
diff --git a/osu.Game/Graphics/Containers/OsuClickableContainer.cs b/osu.Game/Graphics/Containers/OsuClickableContainer.cs
index dbc354ae074d..530b2b308503 100644
--- a/osu.Game/Graphics/Containers/OsuClickableContainer.cs
+++ b/osu.Game/Graphics/Containers/OsuClickableContainer.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -20,7 +19,7 @@ public partial class OsuClickableContainer : ClickableContainer, IHasTooltip
 
         private HoverSounds samples = null!;
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) =>
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) =>
             // base call is checked for cases when `OsuClickableContainer` has masking applied to it directly (ie. externally in object initialisation).
             base.ReceivePositionalInputAt(screenSpacePos)
             // Implementations often apply masking / edge rounding at a content level, so it's imperative to check that as well.
diff --git a/osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs b/osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs
index 18144ab53d62..3692122a7374 100644
--- a/osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs
+++ b/osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs
@@ -11,7 +11,6 @@
 using osu.Game.Audio;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -71,7 +70,7 @@ protected override void LoadComplete()
         public virtual bool BlockScreenWideMouse => BlockPositionalInput;
 
         // receive input outside our bounds so we can trigger a close event on ourselves.
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => BlockScreenWideMouse || base.ReceivePositionalInputAt(screenSpacePos);
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => BlockScreenWideMouse || base.ReceivePositionalInputAt(screenSpacePos);
 
         private bool closeOnMouseUp;
 
diff --git a/osu.Game/Graphics/Containers/OsuHoverContainer.cs b/osu.Game/Graphics/Containers/OsuHoverContainer.cs
index be1e1fe80a14..4753af6a1ef2 100644
--- a/osu.Game/Graphics/Containers/OsuHoverContainer.cs
+++ b/osu.Game/Graphics/Containers/OsuHoverContainer.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -15,11 +14,11 @@ public partial class OsuHoverContainer : OsuClickableContainer
     {
         protected const float FADE_DURATION = 500;
 
-        public Color4? HoverColour { get; set; }
-        private Color4 fallbackHoverColour;
+        public Colour4? HoverColour { get; set; }
+        private Colour4 fallbackHoverColour;
 
-        public Color4? IdleColour { get; set; }
-        private Color4 fallbackIdleColour;
+        public Colour4? IdleColour { get; set; }
+        private Colour4 fallbackIdleColour;
 
         protected virtual IEnumerable<Drawable> EffectTargets => new[] { Content };
 
@@ -70,7 +69,7 @@ protected override void OnHoverLost(HoverLostEvent e)
         private void load(OsuColour colours)
         {
             fallbackHoverColour = colours.Yellow;
-            fallbackIdleColour = Color4.White;
+            fallbackIdleColour = Colour4.White;
         }
 
         protected override void LoadComplete()
diff --git a/osu.Game/Graphics/Containers/OsuRearrangeableListItem.cs b/osu.Game/Graphics/Containers/OsuRearrangeableListItem.cs
index f3f38b6c90a3..01a77ef5878c 100644
--- a/osu.Game/Graphics/Containers/OsuRearrangeableListItem.cs
+++ b/osu.Game/Graphics/Containers/OsuRearrangeableListItem.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -24,24 +23,22 @@ public abstract partial class OsuRearrangeableListItem<TModel> : RearrangeableLi
         /// </summary>
         public readonly BindableBool DragActive = new BindableBool();
 
-        private Color4 handleColour = Color4.White;
-
         /// <summary>
         /// The colour of the drag handle.
         /// </summary>
-        protected Color4 HandleColour
+        protected Colour4 HandleColour
         {
-            get => handleColour;
+            get => field;
             set
             {
-                if (handleColour == value)
+                if (field == value)
                     return;
 
-                handleColour = value;
+                field = value;
 
                 handle?.Colour = value;
             }
-        }
+        } = Colour4.White;
 
         /// <summary>
         /// Whether the drag handle should be shown.
diff --git a/osu.Game/Graphics/Containers/OsuScrollContainer.cs b/osu.Game/Graphics/Containers/OsuScrollContainer.cs
index 43a42eae5724..a6fd15402791 100644
--- a/osu.Game/Graphics/Containers/OsuScrollContainer.cs
+++ b/osu.Game/Graphics/Containers/OsuScrollContainer.cs
@@ -8,9 +8,8 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -87,9 +86,9 @@ protected virtual void ScrollToAbsolutePosition(Vector2 screenSpacePosition)
 
         protected partial class OsuScrollbar : ScrollbarContainer
         {
-            private Color4 hoverColour;
-            private Color4 defaultColour;
-            private Color4 highlightColour;
+            private Colour4 hoverColour;
+            private Colour4 defaultColour;
+            private Colour4 highlightColour;
 
             private readonly Box box;
 
@@ -159,7 +158,7 @@ protected override void OnMouseUp(MouseUpEvent e)
             {
                 if (e.Button != MouseButton.Left) return;
 
-                box.FadeColour(Color4.White, 100);
+                box.FadeColour(Colour4.White, 100);
 
                 base.OnMouseUp(e);
             }
diff --git a/osu.Game/Graphics/Containers/ParallaxContainer.cs b/osu.Game/Graphics/Containers/ParallaxContainer.cs
index 1d1f611616b2..3f92770a6e71 100644
--- a/osu.Game/Graphics/Containers/ParallaxContainer.cs
+++ b/osu.Game/Graphics/Containers/ParallaxContainer.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Input;
 using osu.Framework.Utils;
 using osu.Game.Configuration;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
diff --git a/osu.Game/Graphics/Containers/ScalingContainer.cs b/osu.Game/Graphics/Containers/ScalingContainer.cs
index 22dabc55ce09..bac2f5365026 100644
--- a/osu.Game/Graphics/Containers/ScalingContainer.cs
+++ b/osu.Game/Graphics/Containers/ScalingContainer.cs
@@ -14,8 +14,7 @@
 using osu.Game.Configuration;
 using osu.Game.Screens;
 using osu.Game.Screens.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -180,7 +179,7 @@ private void updateSize()
                         AddInternal(backgroundStack = new BackgroundScreenStack
                         {
                             Alpha = 0,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             Depth = float.MaxValue
                         });
 
diff --git a/osu.Game/Graphics/Containers/ShearAligningWrapper.cs b/osu.Game/Graphics/Containers/ShearAligningWrapper.cs
index 542f269f93d1..d705482daa63 100644
--- a/osu.Game/Graphics/Containers/ShearAligningWrapper.cs
+++ b/osu.Game/Graphics/Containers/ShearAligningWrapper.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Layout;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
diff --git a/osu.Game/Graphics/Containers/UprightAspectMaintainingContainer.cs b/osu.Game/Graphics/Containers/UprightAspectMaintainingContainer.cs
index 78450541787f..afdc300942ad 100644
--- a/osu.Game/Graphics/Containers/UprightAspectMaintainingContainer.cs
+++ b/osu.Game/Graphics/Containers/UprightAspectMaintainingContainer.cs
@@ -2,11 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Extensions.MatrixExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Layout;
-using osuTK;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -55,15 +55,15 @@ private void keepUprightAndUnstretched()
             parentMatrix.M31 = 0.0f;
             parentMatrix.M32 = 0.0f;
 
-            Matrix3 reversedParent = parentMatrix;
+            Matrix3x2 reversedParent = parentMatrix;
             MatrixExtensions.FastInvert(ref reversedParent);
 
             // Extract the rotation.
             float angle = MathF.Atan2(reversedParent.M12, reversedParent.M11);
-            Rotation = MathHelper.RadiansToDegrees(angle);
+            Rotation = float.RadiansToDegrees(angle);
 
             // Remove rotation from the C matrix so that it only contains shear and scale.
-            Matrix3 m = Matrix3.CreateRotationZ(-angle);
+            Matrix3x2 m = Matrix3x2.CreateRotation(-angle);
             reversedParent *= m;
 
             // Extract shear.
@@ -74,18 +74,19 @@ private void keepUprightAndUnstretched()
             float sx = reversedParent.M11;
             float sy = reversedParent.M22;
 
-            Vector3 parentScale = parentMatrix.ExtractScale();
+            float parentScaleX = MathF.Sqrt(parentMatrix.M11 * parentMatrix.M11 + parentMatrix.M12 * parentMatrix.M12);
+            float parentScaleY = MathF.Sqrt(parentMatrix.M21 * parentMatrix.M21 + parentMatrix.M22 * parentMatrix.M22);
 
             float usedScale = 1.0f;
 
             switch (Scaling)
             {
                 case ScaleMode.Horizontal:
-                    usedScale = parentScale.X;
+                    usedScale = parentScaleX;
                     break;
 
                 case ScaleMode.Vertical:
-                    usedScale = parentScale.Y;
+                    usedScale = parentScaleY;
                     break;
             }
 
diff --git a/osu.Game/Graphics/Containers/UserTrackingScrollContainer.cs b/osu.Game/Graphics/Containers/UserTrackingScrollContainer.cs
index 52a6b12166da..c0e842ec0177 100644
--- a/osu.Game/Graphics/Containers/UserTrackingScrollContainer.cs
+++ b/osu.Game/Graphics/Containers/UserTrackingScrollContainer.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Containers
 {
diff --git a/osu.Game/Graphics/Containers/WaveContainer.cs b/osu.Game/Graphics/Containers/WaveContainer.cs
index 2ae4dc5a7622..0f34baf50224 100644
--- a/osu.Game/Graphics/Containers/WaveContainer.cs
+++ b/osu.Game/Graphics/Containers/WaveContainer.cs
@@ -5,12 +5,10 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.Containers
 {
@@ -41,25 +39,25 @@ public partial class WaveContainer : VisibilityContainer
         // required due to LoadAsyncComplete() in `VisibilityContainer` calling PopOut() during load - similar workaround to `OsuDropdownMenu`
         private bool wasShown;
 
-        public Color4 FirstWaveColour
+        public Colour4 FirstWaveColour
         {
             get => firstWave.Colour;
             set => firstWave.Colour = value;
         }
 
-        public Color4 SecondWaveColour
+        public Colour4 SecondWaveColour
         {
             get => secondWave.Colour;
             set => secondWave.Colour = value;
         }
 
-        public Color4 ThirdWaveColour
+        public Colour4 ThirdWaveColour
         {
             get => thirdWave.Colour;
             set => thirdWave.Colour = value;
         }
 
-        public Color4 FourthWaveColour
+        public Colour4 FourthWaveColour
         {
             get => fourthWave.Colour;
             set => fourthWave.Colour = value;
@@ -165,7 +163,7 @@ public Wave()
                 EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Shadow,
-                    Colour = Color4.Black.Opacity(50),
+                    Colour = Colour4.Black.Opacity(50),
                     Radius = 20f,
                 };
 
diff --git a/osu.Game/Graphics/Cursor/MenuCursorContainer.cs b/osu.Game/Graphics/Cursor/MenuCursorContainer.cs
index b91a1de1d3b7..9dbdf0bc7397 100644
--- a/osu.Game/Graphics/Cursor/MenuCursorContainer.cs
+++ b/osu.Game/Graphics/Cursor/MenuCursorContainer.cs
@@ -14,7 +14,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Utils;
 using osu.Game.Configuration;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Cursor
 {
diff --git a/osu.Game/Graphics/Cursor/OsuTooltipContainer.cs b/osu.Game/Graphics/Cursor/OsuTooltipContainer.cs
index fba5e3d569e2..0c8144615637 100644
--- a/osu.Game/Graphics/Cursor/OsuTooltipContainer.cs
+++ b/osu.Game/Graphics/Cursor/OsuTooltipContainer.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -10,8 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Localisation;
 using osu.Framework.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Cursor
 {
@@ -63,7 +61,7 @@ public OsuTooltip()
                 EdgeEffect = new EdgeEffectParameters
                 {
                     Type = EdgeEffectType.Shadow,
-                    Colour = Color4.Black.Opacity(40),
+                    Colour = Colour4.Black.Opacity(40),
                     Radius = 5,
                 };
                 Children = new Drawable[]
diff --git a/osu.Game/Graphics/DateTooltip.cs b/osu.Game/Graphics/DateTooltip.cs
index c084f498fe5b..85849f74cf0e 100644
--- a/osu.Game/Graphics/DateTooltip.cs
+++ b/osu.Game/Graphics/DateTooltip.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
 
 namespace osu.Game.Graphics
 {
@@ -72,6 +71,6 @@ public void SetContent(DateTimeOffset date)
             timeText.Text = LocalisableString.Interpolate($"{localDate:HH:mm:ss \"UTC\"z}");
         }
 
-        public void Move(Vector2 pos) => Position = pos;
+        public void Move(System.Numerics.Vector2 pos) => Position = pos;
     }
 }
diff --git a/osu.Game/Graphics/ErrorTextFlowContainer.cs b/osu.Game/Graphics/ErrorTextFlowContainer.cs
index 40c7580647ff..4b03f3279986 100644
--- a/osu.Game/Graphics/ErrorTextFlowContainer.cs
+++ b/osu.Game/Graphics/ErrorTextFlowContainer.cs
@@ -4,7 +4,7 @@
 using System.Collections.Generic;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Graphics
 {
@@ -30,7 +30,7 @@ public void AddErrors(string[]? errors)
             if (errors == null) return;
 
             foreach (string error in errors)
-                errorTextParts.Add(AddParagraph(error, cp => cp.Colour = Color4.Red));
+                errorTextParts.Add(AddParagraph(error, cp => cp.Colour = Colour4.Red));
         }
     }
 }
diff --git a/osu.Game/Graphics/GhostIcon.cs b/osu.Game/Graphics/GhostIcon.cs
index 9ff036adf0f3..5c6eb7d4939a 100644
--- a/osu.Game/Graphics/GhostIcon.cs
+++ b/osu.Game/Graphics/GhostIcon.cs
@@ -11,7 +11,8 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Shaders.Types;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
+using Vector4 = System.Numerics.Vector4;
 
 namespace osu.Game.Graphics
 {
@@ -37,7 +38,11 @@ protected override void Update()
         {
             base.Update();
 
-            Invalidate(Invalidation.DrawNode);
+            // Only push a DrawNode when the icon is actually visible; it is hidden most of the time
+            // (shown only in NoResultsPlaceholder) so skipping the per-frame invalidation while
+            // invisible saves CPU on every frame the search panel is open with results.
+            if (IsPresent)
+                Invalidate(Invalidation.DrawNode);
         }
 
         protected override DrawNode CreateDrawNode() => new GhostIconDrawNode(this);
diff --git a/osu.Game/Graphics/HSPAColour.cs b/osu.Game/Graphics/HSPAColour.cs
index 18f4c6bca4e2..e6de22a5c578 100644
--- a/osu.Game/Graphics/HSPAColour.cs
+++ b/osu.Game/Graphics/HSPAColour.cs
@@ -2,7 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osuTK.Graphics;
+using System.Numerics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Graphics
 {
@@ -40,7 +41,7 @@ public HSPAColour(float h, float s, float p, float a)
             A = a;
         }
 
-        public HSPAColour(Color4 colour)
+        public HSPAColour(Colour4 colour)
         {
             H = 0;
             S = 0;
@@ -91,11 +92,11 @@ public HSPAColour(Color4 colour)
             }
         }
 
-        public Color4 ToColor4()
+        public Colour4 ToColor4()
         {
             float minOverMax = 1f - S;
 
-            Color4 result = new Color4 { A = A };
+            Vector4 result = new Vector4(0f, 0f, 0f, A);
             float h = H;
 
             if (minOverMax > 0f)
@@ -104,49 +105,49 @@ public Color4 ToColor4()
                 {
                     h = 6f * (h - 0f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.B = P / MathF.Sqrt(p_r / minOverMax / minOverMax + p_g * part * part + p_b);
-                    result.R = result.B / minOverMax;
-                    result.G = result.B + h * (result.R - result.B);
+                    result.Z = P / MathF.Sqrt(p_r / minOverMax / minOverMax + p_g * part * part + p_b);
+                    result.X = result.Z / minOverMax;
+                    result.Y = result.Z + h * (result.X - result.Z);
                 }
                 else if (h < 2f / 6f)
                 {
                     h = 6f * (-h + 2f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.B = P / MathF.Sqrt(p_g / minOverMax / minOverMax + p_r * part * part + p_b);
-                    result.G = result.B / minOverMax;
-                    result.R = result.B + h * (result.G - result.B);
+                    result.Z = P / MathF.Sqrt(p_g / minOverMax / minOverMax + p_r * part * part + p_b);
+                    result.Y = result.Z / minOverMax;
+                    result.X = result.Z + h * (result.Y - result.Z);
                 }
                 else if (h < 3f / 6f)
                 {
                     h = 6f * (h - 2f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.R = P / MathF.Sqrt(p_g / minOverMax / minOverMax + p_b * part * part + p_r);
-                    result.G = result.R / minOverMax;
-                    result.B = result.R + h * (result.G - result.R);
+                    result.X = P / MathF.Sqrt(p_g / minOverMax / minOverMax + p_b * part * part + p_r);
+                    result.Y = result.X / minOverMax;
+                    result.Z = result.X + h * (result.Y - result.X);
                 }
                 else if (h < 4f / 6f)
                 {
                     h = 6f * (-h + 4f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.R = P / MathF.Sqrt(p_b / minOverMax / minOverMax + p_g * part * part + p_r);
-                    result.B = result.R / minOverMax;
-                    result.G = result.R + h * (result.B - result.R);
+                    result.X = P / MathF.Sqrt(p_b / minOverMax / minOverMax + p_g * part * part + p_r);
+                    result.Z = result.X / minOverMax;
+                    result.Y = result.X + h * (result.Z - result.X);
                 }
                 else if (h < 5f / 6f)
                 {
                     h = 6f * (h - 4f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.G = P / MathF.Sqrt(p_b / minOverMax / minOverMax + p_r * part * part + p_g);
-                    result.B = result.G / minOverMax;
-                    result.R = result.G + h * (result.B - result.G);
+                    result.Y = P / MathF.Sqrt(p_b / minOverMax / minOverMax + p_r * part * part + p_g);
+                    result.Z = result.Y / minOverMax;
+                    result.X = result.Y + h * (result.Z - result.Y);
                 }
                 else
                 {
                     h = 6f * (-h + 6f / 6f);
                     float part = 1f + h * (1f / minOverMax - 1f);
-                    result.G = P / MathF.Sqrt(p_r / minOverMax / minOverMax + p_b * part * part + p_g);
-                    result.R = result.G / minOverMax;
-                    result.B = result.G + h * (result.R - result.G);
+                    result.Y = P / MathF.Sqrt(p_r / minOverMax / minOverMax + p_b * part * part + p_g);
+                    result.X = result.Y / minOverMax;
+                    result.Z = result.Y + h * (result.X - result.Y);
                 }
             }
             else
@@ -154,48 +155,48 @@ public Color4 ToColor4()
                 if (h < 1f / 6f)
                 {
                     h = 6f * (h - 0f / 6f);
-                    result.R = MathF.Sqrt(P * P / (p_r + p_g * h * h));
-                    result.G = result.R * h;
-                    result.B = 0f;
+                    result.X = MathF.Sqrt(P * P / (p_r + p_g * h * h));
+                    result.Y = result.X * h;
+                    result.Z = 0f;
                 }
                 else if (h < 2f / 6f)
                 {
                     h = 6f * (-h + 2f / 6f);
-                    result.G = MathF.Sqrt(P * P / (p_g + p_r * h * h));
-                    result.R = result.G * h;
-                    result.B = 0f;
+                    result.Y = MathF.Sqrt(P * P / (p_g + p_r * h * h));
+                    result.X = result.Y * h;
+                    result.Z = 0f;
                 }
                 else if (h < 3f / 6f)
                 {
                     h = 6f * (h - 2f / 6f);
-                    result.G = MathF.Sqrt(P * P / (p_g + p_b * h * h));
-                    result.B = result.G * h;
-                    result.R = 0f;
+                    result.Y = MathF.Sqrt(P * P / (p_g + p_b * h * h));
+                    result.Z = result.Y * h;
+                    result.X = 0f;
                 }
                 else if (h < 4f / 6f)
                 {
                     h = 6f * (-h + 4f / 6f);
-                    result.B = MathF.Sqrt(P * P / (p_b + p_g * h * h));
-                    result.G = result.B * h;
-                    result.R = 0f;
+                    result.Z = MathF.Sqrt(P * P / (p_b + p_g * h * h));
+                    result.Y = result.Z * h;
+                    result.X = 0f;
                 }
                 else if (h < 5f / 6f)
                 {
                     h = 6f * (h - 4f / 6f);
-                    result.B = MathF.Sqrt(P * P / (p_b + p_r * h * h));
-                    result.R = result.B * h;
-                    result.G = 0f;
+                    result.Z = MathF.Sqrt(P * P / (p_b + p_r * h * h));
+                    result.X = result.Z * h;
+                    result.Y = 0f;
                 }
                 else
                 {
                     h = 6f * (-h + 6f / 6f);
-                    result.R = MathF.Sqrt(P * P / (p_r + p_b * h * h));
-                    result.B = result.R * h;
-                    result.G = 0f;
+                    result.X = MathF.Sqrt(P * P / (p_r + p_b * h * h));
+                    result.Z = result.X * h;
+                    result.Y = 0f;
                 }
             }
 
-            return result;
+            return new Colour4(result);
         }
     }
 }
diff --git a/osu.Game/Graphics/IHasAccentColour.cs b/osu.Game/Graphics/IHasAccentColour.cs
index d2d942026aea..b4690217ec48 100644
--- a/osu.Game/Graphics/IHasAccentColour.cs
+++ b/osu.Game/Graphics/IHasAccentColour.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Transforms;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics
 {
@@ -14,7 +13,7 @@ namespace osu.Game.Graphics
     /// </summary>
     public interface IHasAccentColour : IDrawable
     {
-        Color4 AccentColour { get; set; }
+        Colour4 AccentColour { get; set; }
     }
 
     public static class AccentedColourExtensions
@@ -23,7 +22,7 @@ public static class AccentedColourExtensions
         /// Smoothly adjusts <see cref="IHasAccentColour.AccentColour"/> over time.
         /// </summary>
         /// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
-        public static TransformSequence<T> FadeAccent<T>(this T accentedDrawable, Color4 newColour, double duration = 0, Easing easing = Easing.None)
+        public static TransformSequence<T> FadeAccent<T>(this T accentedDrawable, Colour4 newColour, double duration = 0, Easing easing = Easing.None)
             where T : class, IHasAccentColour
             => accentedDrawable.TransformTo(nameof(accentedDrawable.AccentColour), newColour, duration, easing);
 
@@ -31,7 +30,7 @@ public static TransformSequence<T> FadeAccent<T>(this T accentedDrawable, Color4
         /// Smoothly adjusts <see cref="IHasAccentColour.AccentColour"/> over time.
         /// </summary>
         /// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
-        public static TransformSequence<T> FadeAccent<T>(this TransformSequence<T> t, Color4 newColour, double duration = 0, Easing easing = Easing.None)
+        public static TransformSequence<T> FadeAccent<T>(this TransformSequence<T> t, Colour4 newColour, double duration = 0, Easing easing = Easing.None)
             where T : Drawable, IHasAccentColour
             => t.Append(o => o.FadeAccent(newColour, duration, easing));
     }
diff --git a/osu.Game/Graphics/OpenGL/Vertices/PositionAndColourVertex.cs b/osu.Game/Graphics/OpenGL/Vertices/PositionAndColourVertex.cs
index 2428eebbe50f..c42384cebe08 100644
--- a/osu.Game/Graphics/OpenGL/Vertices/PositionAndColourVertex.cs
+++ b/osu.Game/Graphics/OpenGL/Vertices/PositionAndColourVertex.cs
@@ -4,9 +4,8 @@
 using System;
 using System.Runtime.InteropServices;
 using osu.Framework.Graphics.Rendering.Vertices;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Graphics.ES30;
+using System.Numerics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Graphics.OpenGL.Vertices
 {
@@ -17,7 +16,7 @@ public struct PositionAndColourVertex : IEquatable<PositionAndColourVertex>, IVe
         public Vector2 Position;
 
         [VertexMember(4, VertexAttribPointerType.Float)]
-        public Color4 Colour;
+        public Colour4 Colour;
 
         public bool Equals(PositionAndColourVertex other)
             => Position.Equals(other.Position)
diff --git a/osu.Game/Graphics/OsuColour.cs b/osu.Game/Graphics/OsuColour.cs
index 5dd6dc0c539c..81348e60baf6 100644
--- a/osu.Game/Graphics/OsuColour.cs
+++ b/osu.Game/Graphics/OsuColour.cs
@@ -11,14 +11,14 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Utils;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Graphics
 {
     public class OsuColour
     {
-        public static Color4 Gray(float amt) => new Color4(amt, amt, amt, 1f);
-        public static Color4 Gray(byte amt) => new Color4(amt, amt, amt, 255);
+        public static Colour4 Gray(float amt) => new Colour4(amt, amt, amt, 1f);
+        public static Colour4 Gray(byte amt) => new Colour4(amt, amt, amt, 255);
 
         /// <summary>
         /// The maximum star rating colour which can be distinguished against a black background.
@@ -30,7 +30,7 @@ public class OsuColour
         /// </summary>
         public const float STAR_DIFFICULTY_TEXT_GRADIENT_CUTOFF = 9.0f;
 
-        public static readonly (float, Color4)[] STAR_DIFFICULTY_SPECTRUM =
+        public static readonly (float, Colour4)[] STAR_DIFFICULTY_SPECTRUM =
         {
             (0.1f, Color4Extensions.FromHex("aaaaaa")),
             (0.1f, Color4Extensions.FromHex("4290fb")),
@@ -43,11 +43,11 @@ public static readonly (float, Color4)[] STAR_DIFFICULTY_SPECTRUM =
             (5.8f, Color4Extensions.FromHex("c645b8")),
             (6.7f, Color4Extensions.FromHex("6563de")),
             (7.7f, Color4Extensions.FromHex("18158e")),
-            (9.0f, Color4.Black),
-            (10.0f, Color4.Black),
+            (9.0f, Colour4.Black),
+            (10.0f, Colour4.Black),
         };
 
-        public static readonly (float, Color4)[] STAR_DIFFICULTY_TEXT_SPECTRUM =
+        public static readonly (float, Colour4)[] STAR_DIFFICULTY_TEXT_SPECTRUM =
         {
             (9.0f, Color4Extensions.FromHex("f6f05c")),
             (9.9f, Color4Extensions.FromHex("ff8068")),
@@ -59,15 +59,15 @@ public static readonly (float, Color4)[] STAR_DIFFICULTY_TEXT_SPECTRUM =
         /// <summary>
         /// Retrieves the colour for a given point in the star range.
         /// </summary>
-        public Color4 ForStarDifficulty(double starDifficulty) => ColourUtils.SampleFromLinearGradient(STAR_DIFFICULTY_SPECTRUM, (float)Math.Round(starDifficulty, 2, MidpointRounding.AwayFromZero));
+        public Colour4 ForStarDifficulty(double starDifficulty) => ColourUtils.SampleFromLinearGradient(STAR_DIFFICULTY_SPECTRUM, (float)Math.Round(starDifficulty, 2, MidpointRounding.AwayFromZero));
 
         /// <summary>
         /// Retrieves the colour for the text inside the star rating display.
         /// </summary>
-        public Color4 ForStarDifficultyText(double starDifficulty)
+        public Colour4 ForStarDifficultyText(double starDifficulty)
         {
             if (starDifficulty < STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF)
-                return Color4.Black.Opacity(0.75f);
+                return Colour4.Black.Opacity(0.75f);
 
             if (starDifficulty < STAR_DIFFICULTY_TEXT_GRADIENT_CUTOFF)
                 return Orange1;
@@ -78,7 +78,7 @@ public Color4 ForStarDifficultyText(double starDifficulty)
         /// <summary>
         /// Retrieves the colour for a <see cref="ScoreRank"/>.
         /// </summary>
-        public static Color4 ForRank(ScoreRank rank)
+        public static Colour4 ForRank(ScoreRank rank)
         {
             switch (rank)
             {
@@ -111,13 +111,13 @@ public static Color4 ForRank(ScoreRank rank)
         /// <summary>
         /// Retrieves the colour for a <see cref="HitResult"/>.
         /// </summary>
-        public Color4 ForHitResult(HitResult result)
+        public Colour4 ForHitResult(HitResult result)
         {
             switch (result)
             {
                 case HitResult.IgnoreMiss:
                 case HitResult.SmallTickMiss:
-                    return Color4.Gray;
+                    return Colour4.Gray;
 
                 case HitResult.Miss:
                 case HitResult.LargeTickMiss:
@@ -152,15 +152,15 @@ public Color4 ForHitResult(HitResult result)
         /// <remarks>
         /// Sourced from web: https://github.com/ppy/osu-web/blob/007eebb1916ed5cb6a7866d82d8011b1060a945e/resources/assets/less/layout.less#L36-L50
         /// </remarks>
-        public static Color4? ForBeatmapSetOnlineStatus(BeatmapOnlineStatus status)
+        public static Colour4? ForBeatmapSetOnlineStatus(BeatmapOnlineStatus status)
         {
             switch (status)
             {
                 case BeatmapOnlineStatus.None:
-                    return Color4.RosyBrown;
+                    return Colour4.RosyBrown;
 
                 case BeatmapOnlineStatus.LocallyModified:
-                    return Color4.OrangeRed;
+                    return Colour4.OrangeRed;
 
                 case BeatmapOnlineStatus.Ranked:
                 case BeatmapOnlineStatus.Approved:
@@ -179,7 +179,7 @@ public Color4 ForHitResult(HitResult result)
                     return Color4Extensions.FromHex(@"ff9966");
 
                 case BeatmapOnlineStatus.Graveyard:
-                    return Color4.Black;
+                    return Colour4.Black;
 
                 default:
                     return null;
@@ -189,7 +189,7 @@ public Color4 ForHitResult(HitResult result)
         /// <summary>
         /// Retrieves the main accent colour for a <see cref="ModType"/>.
         /// </summary>
-        public Color4 ForModType(ModType modType)
+        public Colour4 ForModType(ModType modType)
         {
             switch (modType)
             {
@@ -219,7 +219,7 @@ public Color4 ForModType(ModType modType)
         /// <summary>
         /// Retrieves the main accent colour for a <see cref="RoomCategory"/>.
         /// </summary>
-        public Color4? ForRoomCategory(RoomCategory roomCategory)
+        public Colour4? ForRoomCategory(RoomCategory roomCategory)
         {
             switch (roomCategory)
             {
@@ -237,7 +237,7 @@ public Color4 ForModType(ModType modType)
         /// <summary>
         /// Retrieves the accent colour representing a <see cref="Room"/>'s current status.
         /// </summary>
-        public Color4 ForRoomStatus(Room room)
+        public Colour4 ForRoomStatus(Room room)
         {
             if (room.HasEnded)
                 return YellowDarker;
@@ -294,7 +294,7 @@ public static ColourInfo ForRankingTier(RankingTier tier)
         /// Returns a foreground text colour that is supposed to contrast well with
         /// the supplied <paramref name="backgroundColour"/>.
         /// </summary>
-        public static Color4 ForegroundTextColourFor(Color4 backgroundColour)
+        public static Colour4 ForegroundTextColourFor(Colour4 backgroundColour)
         {
             // formula taken from the RGB->YIQ conversions: https://en.wikipedia.org/wiki/YIQ
             // brightness here is equivalent to the Y component in the above colour model, which is a rough estimate of lightness.
@@ -302,100 +302,100 @@ public static Color4 ForegroundTextColourFor(Color4 backgroundColour)
             return Gray(brightness > 0.5f ? 0.2f : 0.9f);
         }
 
-        public readonly Color4 TeamColourRed = Color4Extensions.FromHex("#AA1414");
-        public readonly Color4 TeamColourBlue = Color4Extensions.FromHex("#1462AA");
+        public readonly Colour4 TeamColourRed = Color4Extensions.FromHex("#AA1414");
+        public readonly Colour4 TeamColourBlue = Color4Extensions.FromHex("#1462AA");
 
         // See https://github.com/ppy/osu-web/blob/master/resources/assets/less/colors.less
-        public readonly Color4 PurpleLighter = Color4Extensions.FromHex(@"eeeeff");
-        public readonly Color4 PurpleLight = Color4Extensions.FromHex(@"aa88ff");
-        public readonly Color4 PurpleLightAlternative = Color4Extensions.FromHex(@"cba4da");
-        public readonly Color4 Purple = Color4Extensions.FromHex(@"8866ee");
-        public readonly Color4 PurpleDark = Color4Extensions.FromHex(@"6644cc");
-        public readonly Color4 PurpleDarkAlternative = Color4Extensions.FromHex(@"312436");
-        public readonly Color4 PurpleDarker = Color4Extensions.FromHex(@"441188");
-
-        public readonly Color4 PinkLighter = Color4Extensions.FromHex(@"ffddee");
-        public readonly Color4 PinkLight = Color4Extensions.FromHex(@"ff99cc");
-        public readonly Color4 Pink = Color4Extensions.FromHex(@"ff66aa");
-        public readonly Color4 PinkDark = Color4Extensions.FromHex(@"cc5288");
-        public readonly Color4 PinkDarker = Color4Extensions.FromHex(@"bb1177");
-
-        public readonly Color4 BlueLighter = Color4Extensions.FromHex(@"ddffff");
-        public readonly Color4 BlueLight = Color4Extensions.FromHex(@"99eeff");
-        public readonly Color4 Blue = Color4Extensions.FromHex(@"66ccff");
-        public readonly Color4 BlueDark = Color4Extensions.FromHex(@"44aadd");
-        public readonly Color4 BlueDarker = Color4Extensions.FromHex(@"2299bb");
-
-        public readonly Color4 YellowLighter = Color4Extensions.FromHex(@"ffffdd");
-        public readonly Color4 YellowLight = Color4Extensions.FromHex(@"ffdd55");
-        public readonly Color4 Yellow = Color4Extensions.FromHex(@"ffcc22");
-        public readonly Color4 YellowDark = Color4Extensions.FromHex(@"eeaa00");
-        public readonly Color4 YellowDarker = Color4Extensions.FromHex(@"cc6600");
-
-        public readonly Color4 GreenLighter = Color4Extensions.FromHex(@"eeffcc");
-        public readonly Color4 GreenLight = Color4Extensions.FromHex(@"b3d944");
-        public readonly Color4 Green = Color4Extensions.FromHex(@"88b300");
-        public readonly Color4 GreenDark = Color4Extensions.FromHex(@"668800");
-        public readonly Color4 GreenDarker = Color4Extensions.FromHex(@"445500");
-
-        public readonly Color4 Sky = Color4Extensions.FromHex(@"6bb5ff");
-        public readonly Color4 GreySkyLighter = Color4Extensions.FromHex(@"c6e3f4");
-        public readonly Color4 GreySkyLight = Color4Extensions.FromHex(@"8ab3cc");
-        public readonly Color4 GreySky = Color4Extensions.FromHex(@"405461");
-        public readonly Color4 GreySkyDark = Color4Extensions.FromHex(@"303d47");
-        public readonly Color4 GreySkyDarker = Color4Extensions.FromHex(@"21272c");
-
-        public readonly Color4 SeaFoam = Color4Extensions.FromHex(@"05ffa2");
-        public readonly Color4 GreySeaFoamLighter = Color4Extensions.FromHex(@"9ebab1");
-        public readonly Color4 GreySeaFoamLight = Color4Extensions.FromHex(@"4d7365");
-        public readonly Color4 GreySeaFoam = Color4Extensions.FromHex(@"33413c");
-        public readonly Color4 GreySeaFoamDark = Color4Extensions.FromHex(@"2c3532");
-        public readonly Color4 GreySeaFoamDarker = Color4Extensions.FromHex(@"1e2422");
-
-        public readonly Color4 Cyan = Color4Extensions.FromHex(@"05f4fd");
-        public readonly Color4 GreyCyanLighter = Color4Extensions.FromHex(@"77b1b3");
-        public readonly Color4 GreyCyanLight = Color4Extensions.FromHex(@"436d6f");
-        public readonly Color4 GreyCyan = Color4Extensions.FromHex(@"293d3e");
-        public readonly Color4 GreyCyanDark = Color4Extensions.FromHex(@"243536");
-        public readonly Color4 GreyCyanDarker = Color4Extensions.FromHex(@"1e2929");
-
-        public readonly Color4 Lime = Color4Extensions.FromHex(@"82ff05");
-        public readonly Color4 GreyLimeLighter = Color4Extensions.FromHex(@"deff87");
-        public readonly Color4 GreyLimeLight = Color4Extensions.FromHex(@"657259");
-        public readonly Color4 GreyLime = Color4Extensions.FromHex(@"3f443a");
-        public readonly Color4 GreyLimeDark = Color4Extensions.FromHex(@"32352e");
-        public readonly Color4 GreyLimeDarker = Color4Extensions.FromHex(@"2e302b");
-
-        public readonly Color4 Violet = Color4Extensions.FromHex(@"bf04ff");
-        public readonly Color4 GreyVioletLighter = Color4Extensions.FromHex(@"ebb8fe");
-        public readonly Color4 GreyVioletLight = Color4Extensions.FromHex(@"685370");
-        public readonly Color4 GreyViolet = Color4Extensions.FromHex(@"46334d");
-        public readonly Color4 GreyVioletDark = Color4Extensions.FromHex(@"2c2230");
-        public readonly Color4 GreyVioletDarker = Color4Extensions.FromHex(@"201823");
-
-        public readonly Color4 Carmine = Color4Extensions.FromHex(@"ff0542");
-        public readonly Color4 GreyCarmineLighter = Color4Extensions.FromHex(@"deaab4");
-        public readonly Color4 GreyCarmineLight = Color4Extensions.FromHex(@"644f53");
-        public readonly Color4 GreyCarmine = Color4Extensions.FromHex(@"342b2d");
-        public readonly Color4 GreyCarmineDark = Color4Extensions.FromHex(@"302a2b");
-        public readonly Color4 GreyCarmineDarker = Color4Extensions.FromHex(@"241d1e");
-
-        public readonly Color4 Gray0 = Color4Extensions.FromHex(@"000");
-        public readonly Color4 Gray1 = Color4Extensions.FromHex(@"111");
-        public readonly Color4 Gray2 = Color4Extensions.FromHex(@"222");
-        public readonly Color4 Gray3 = Color4Extensions.FromHex(@"333");
-        public readonly Color4 Gray4 = Color4Extensions.FromHex(@"444");
-        public readonly Color4 Gray5 = Color4Extensions.FromHex(@"555");
-        public readonly Color4 Gray6 = Color4Extensions.FromHex(@"666");
-        public readonly Color4 Gray7 = Color4Extensions.FromHex(@"777");
-        public readonly Color4 Gray8 = Color4Extensions.FromHex(@"888");
-        public readonly Color4 Gray9 = Color4Extensions.FromHex(@"999");
-        public readonly Color4 GrayA = Color4Extensions.FromHex(@"aaa");
-        public readonly Color4 GrayB = Color4Extensions.FromHex(@"bbb");
-        public readonly Color4 GrayC = Color4Extensions.FromHex(@"ccc");
-        public readonly Color4 GrayD = Color4Extensions.FromHex(@"ddd");
-        public readonly Color4 GrayE = Color4Extensions.FromHex(@"eee");
-        public readonly Color4 GrayF = Color4Extensions.FromHex(@"fff");
+        public readonly Colour4 PurpleLighter = Color4Extensions.FromHex(@"eeeeff");
+        public readonly Colour4 PurpleLight = Color4Extensions.FromHex(@"aa88ff");
+        public readonly Colour4 PurpleLightAlternative = Color4Extensions.FromHex(@"cba4da");
+        public readonly Colour4 Purple = Color4Extensions.FromHex(@"8866ee");
+        public readonly Colour4 PurpleDark = Color4Extensions.FromHex(@"6644cc");
+        public readonly Colour4 PurpleDarkAlternative = Color4Extensions.FromHex(@"312436");
+        public readonly Colour4 PurpleDarker = Color4Extensions.FromHex(@"441188");
+
+        public readonly Colour4 PinkLighter = Color4Extensions.FromHex(@"ffddee");
+        public readonly Colour4 PinkLight = Color4Extensions.FromHex(@"ff99cc");
+        public readonly Colour4 Pink = Color4Extensions.FromHex(@"ff66aa");
+        public readonly Colour4 PinkDark = Color4Extensions.FromHex(@"cc5288");
+        public readonly Colour4 PinkDarker = Color4Extensions.FromHex(@"bb1177");
+
+        public readonly Colour4 BlueLighter = Color4Extensions.FromHex(@"ddffff");
+        public readonly Colour4 BlueLight = Color4Extensions.FromHex(@"99eeff");
+        public readonly Colour4 Blue = Color4Extensions.FromHex(@"66ccff");
+        public readonly Colour4 BlueDark = Color4Extensions.FromHex(@"44aadd");
+        public readonly Colour4 BlueDarker = Color4Extensions.FromHex(@"2299bb");
+
+        public readonly Colour4 YellowLighter = Color4Extensions.FromHex(@"ffffdd");
+        public readonly Colour4 YellowLight = Color4Extensions.FromHex(@"ffdd55");
+        public readonly Colour4 Yellow = Color4Extensions.FromHex(@"ffcc22");
+        public readonly Colour4 YellowDark = Color4Extensions.FromHex(@"eeaa00");
+        public readonly Colour4 YellowDarker = Color4Extensions.FromHex(@"cc6600");
+
+        public readonly Colour4 GreenLighter = Color4Extensions.FromHex(@"eeffcc");
+        public readonly Colour4 GreenLight = Color4Extensions.FromHex(@"b3d944");
+        public readonly Colour4 Green = Color4Extensions.FromHex(@"88b300");
+        public readonly Colour4 GreenDark = Color4Extensions.FromHex(@"668800");
+        public readonly Colour4 GreenDarker = Color4Extensions.FromHex(@"445500");
+
+        public readonly Colour4 Sky = Color4Extensions.FromHex(@"6bb5ff");
+        public readonly Colour4 GreySkyLighter = Color4Extensions.FromHex(@"c6e3f4");
+        public readonly Colour4 GreySkyLight = Color4Extensions.FromHex(@"8ab3cc");
+        public readonly Colour4 GreySky = Color4Extensions.FromHex(@"405461");
+        public readonly Colour4 GreySkyDark = Color4Extensions.FromHex(@"303d47");
+        public readonly Colour4 GreySkyDarker = Color4Extensions.FromHex(@"21272c");
+
+        public readonly Colour4 SeaFoam = Color4Extensions.FromHex(@"05ffa2");
+        public readonly Colour4 GreySeaFoamLighter = Color4Extensions.FromHex(@"9ebab1");
+        public readonly Colour4 GreySeaFoamLight = Color4Extensions.FromHex(@"4d7365");
+        public readonly Colour4 GreySeaFoam = Color4Extensions.FromHex(@"33413c");
+        public readonly Colour4 GreySeaFoamDark = Color4Extensions.FromHex(@"2c3532");
+        public readonly Colour4 GreySeaFoamDarker = Color4Extensions.FromHex(@"1e2422");
+
+        public readonly Colour4 Cyan = Color4Extensions.FromHex(@"05f4fd");
+        public readonly Colour4 GreyCyanLighter = Color4Extensions.FromHex(@"77b1b3");
+        public readonly Colour4 GreyCyanLight = Color4Extensions.FromHex(@"436d6f");
+        public readonly Colour4 GreyCyan = Color4Extensions.FromHex(@"293d3e");
+        public readonly Colour4 GreyCyanDark = Color4Extensions.FromHex(@"243536");
+        public readonly Colour4 GreyCyanDarker = Color4Extensions.FromHex(@"1e2929");
+
+        public readonly Colour4 Lime = Color4Extensions.FromHex(@"82ff05");
+        public readonly Colour4 GreyLimeLighter = Color4Extensions.FromHex(@"deff87");
+        public readonly Colour4 GreyLimeLight = Color4Extensions.FromHex(@"657259");
+        public readonly Colour4 GreyLime = Color4Extensions.FromHex(@"3f443a");
+        public readonly Colour4 GreyLimeDark = Color4Extensions.FromHex(@"32352e");
+        public readonly Colour4 GreyLimeDarker = Color4Extensions.FromHex(@"2e302b");
+
+        public readonly Colour4 Violet = Color4Extensions.FromHex(@"bf04ff");
+        public readonly Colour4 GreyVioletLighter = Color4Extensions.FromHex(@"ebb8fe");
+        public readonly Colour4 GreyVioletLight = Color4Extensions.FromHex(@"685370");
+        public readonly Colour4 GreyViolet = Color4Extensions.FromHex(@"46334d");
+        public readonly Colour4 GreyVioletDark = Color4Extensions.FromHex(@"2c2230");
+        public readonly Colour4 GreyVioletDarker = Color4Extensions.FromHex(@"201823");
+
+        public readonly Colour4 Carmine = Color4Extensions.FromHex(@"ff0542");
+        public readonly Colour4 GreyCarmineLighter = Color4Extensions.FromHex(@"deaab4");
+        public readonly Colour4 GreyCarmineLight = Color4Extensions.FromHex(@"644f53");
+        public readonly Colour4 GreyCarmine = Color4Extensions.FromHex(@"342b2d");
+        public readonly Colour4 GreyCarmineDark = Color4Extensions.FromHex(@"302a2b");
+        public readonly Colour4 GreyCarmineDarker = Color4Extensions.FromHex(@"241d1e");
+
+        public readonly Colour4 Gray0 = Color4Extensions.FromHex(@"000");
+        public readonly Colour4 Gray1 = Color4Extensions.FromHex(@"111");
+        public readonly Colour4 Gray2 = Color4Extensions.FromHex(@"222");
+        public readonly Colour4 Gray3 = Color4Extensions.FromHex(@"333");
+        public readonly Colour4 Gray4 = Color4Extensions.FromHex(@"444");
+        public readonly Colour4 Gray5 = Color4Extensions.FromHex(@"555");
+        public readonly Colour4 Gray6 = Color4Extensions.FromHex(@"666");
+        public readonly Colour4 Gray7 = Color4Extensions.FromHex(@"777");
+        public readonly Colour4 Gray8 = Color4Extensions.FromHex(@"888");
+        public readonly Colour4 Gray9 = Color4Extensions.FromHex(@"999");
+        public readonly Colour4 GrayA = Color4Extensions.FromHex(@"aaa");
+        public readonly Colour4 GrayB = Color4Extensions.FromHex(@"bbb");
+        public readonly Colour4 GrayC = Color4Extensions.FromHex(@"ccc");
+        public readonly Colour4 GrayD = Color4Extensions.FromHex(@"ddd");
+        public readonly Colour4 GrayE = Color4Extensions.FromHex(@"eee");
+        public readonly Colour4 GrayF = Color4Extensions.FromHex(@"fff");
 
         #region "Basic" colour theme
 
@@ -406,72 +406,72 @@ public static Color4 ForegroundTextColourFor(Color4 backgroundColour)
         // If the colour in question is supposed to always match the view in which it is displayed theme-wise, use `OverlayColourProvider`.
         // If the colour usage is special and in general differs from the surrounding view in choice of hue, use the `OsuColour` constants.
 
-        public readonly Color4 Pink0 = Color4Extensions.FromHex(@"ff99c7");
-        public readonly Color4 Pink1 = Color4Extensions.FromHex(@"ff66ab");
-        public readonly Color4 Pink2 = Color4Extensions.FromHex(@"eb4791");
-        public readonly Color4 Pink3 = Color4Extensions.FromHex(@"cc3378");
-        public readonly Color4 Pink4 = Color4Extensions.FromHex(@"6b2e49");
-
-        public readonly Color4 Purple0 = Color4Extensions.FromHex(@"b299ff");
-        public readonly Color4 Purple1 = Color4Extensions.FromHex(@"8c66ff");
-        public readonly Color4 Purple2 = Color4Extensions.FromHex(@"7047eb");
-        public readonly Color4 Purple3 = Color4Extensions.FromHex(@"5933cc");
-        public readonly Color4 Purple4 = Color4Extensions.FromHex(@"3d2e6b");
-
-        public readonly Color4 Blue0 = Color4Extensions.FromHex(@"99ddff");
-        public readonly Color4 Blue1 = Color4Extensions.FromHex(@"66ccff");
-        public readonly Color4 Blue2 = Color4Extensions.FromHex(@"47b4eb");
-        public readonly Color4 Blue3 = Color4Extensions.FromHex(@"3399cc");
-        public readonly Color4 Blue4 = Color4Extensions.FromHex(@"2e576b");
-
-        public readonly Color4 Green0 = Color4Extensions.FromHex(@"99ffa2");
-        public readonly Color4 Green1 = Color4Extensions.FromHex(@"66ff73");
-        public readonly Color4 Green2 = Color4Extensions.FromHex(@"47eb55");
-        public readonly Color4 Green3 = Color4Extensions.FromHex(@"33cc40");
-        public readonly Color4 Green4 = Color4Extensions.FromHex(@"2e6b33");
-
-        public readonly Color4 Lime0 = Color4Extensions.FromHex(@"ccff99");
-        public readonly Color4 Lime1 = Color4Extensions.FromHex(@"b2ff66");
-        public readonly Color4 Lime2 = Color4Extensions.FromHex(@"99eb47");
-        public readonly Color4 Lime3 = Color4Extensions.FromHex(@"7fcc33");
-        public readonly Color4 Lime4 = Color4Extensions.FromHex(@"4c6b2e");
-
-        public readonly Color4 Orange0 = Color4Extensions.FromHex(@"ffe699");
-        public readonly Color4 Orange1 = Color4Extensions.FromHex(@"ffd966");
-        public readonly Color4 Orange2 = Color4Extensions.FromHex(@"ebc247");
-        public readonly Color4 Orange3 = Color4Extensions.FromHex(@"cca633");
-        public readonly Color4 Orange4 = Color4Extensions.FromHex(@"6b5c2e");
-
-        public readonly Color4 DarkOrange0 = Color4Extensions.FromHex(@"ffbb99");
-        public readonly Color4 DarkOrange1 = Color4Extensions.FromHex(@"ff9966");
-        public readonly Color4 DarkOrange2 = Color4Extensions.FromHex(@"eb7e47");
-        public readonly Color4 DarkOrange3 = Color4Extensions.FromHex(@"cc6633");
-        public readonly Color4 DarkOrange4 = Color4Extensions.FromHex(@"6b422e");
-
-        public readonly Color4 Red0 = Color4Extensions.FromHex(@"ff9b9b");
-        public readonly Color4 Red1 = Color4Extensions.FromHex(@"ff6666");
-        public readonly Color4 Red2 = Color4Extensions.FromHex(@"eb4747");
-        public readonly Color4 Red3 = Color4Extensions.FromHex(@"cc3333");
-        public readonly Color4 Red4 = Color4Extensions.FromHex(@"6b2e2e");
+        public readonly Colour4 Pink0 = Color4Extensions.FromHex(@"ff99c7");
+        public readonly Colour4 Pink1 = Color4Extensions.FromHex(@"ff66ab");
+        public readonly Colour4 Pink2 = Color4Extensions.FromHex(@"eb4791");
+        public readonly Colour4 Pink3 = Color4Extensions.FromHex(@"cc3378");
+        public readonly Colour4 Pink4 = Color4Extensions.FromHex(@"6b2e49");
+
+        public readonly Colour4 Purple0 = Color4Extensions.FromHex(@"b299ff");
+        public readonly Colour4 Purple1 = Color4Extensions.FromHex(@"8c66ff");
+        public readonly Colour4 Purple2 = Color4Extensions.FromHex(@"7047eb");
+        public readonly Colour4 Purple3 = Color4Extensions.FromHex(@"5933cc");
+        public readonly Colour4 Purple4 = Color4Extensions.FromHex(@"3d2e6b");
+
+        public readonly Colour4 Blue0 = Color4Extensions.FromHex(@"99ddff");
+        public readonly Colour4 Blue1 = Color4Extensions.FromHex(@"66ccff");
+        public readonly Colour4 Blue2 = Color4Extensions.FromHex(@"47b4eb");
+        public readonly Colour4 Blue3 = Color4Extensions.FromHex(@"3399cc");
+        public readonly Colour4 Blue4 = Color4Extensions.FromHex(@"2e576b");
+
+        public readonly Colour4 Green0 = Color4Extensions.FromHex(@"99ffa2");
+        public readonly Colour4 Green1 = Color4Extensions.FromHex(@"66ff73");
+        public readonly Colour4 Green2 = Color4Extensions.FromHex(@"47eb55");
+        public readonly Colour4 Green3 = Color4Extensions.FromHex(@"33cc40");
+        public readonly Colour4 Green4 = Color4Extensions.FromHex(@"2e6b33");
+
+        public readonly Colour4 Lime0 = Color4Extensions.FromHex(@"ccff99");
+        public readonly Colour4 Lime1 = Color4Extensions.FromHex(@"b2ff66");
+        public readonly Colour4 Lime2 = Color4Extensions.FromHex(@"99eb47");
+        public readonly Colour4 Lime3 = Color4Extensions.FromHex(@"7fcc33");
+        public readonly Colour4 Lime4 = Color4Extensions.FromHex(@"4c6b2e");
+
+        public readonly Colour4 Orange0 = Color4Extensions.FromHex(@"ffe699");
+        public readonly Colour4 Orange1 = Color4Extensions.FromHex(@"ffd966");
+        public readonly Colour4 Orange2 = Color4Extensions.FromHex(@"ebc247");
+        public readonly Colour4 Orange3 = Color4Extensions.FromHex(@"cca633");
+        public readonly Colour4 Orange4 = Color4Extensions.FromHex(@"6b5c2e");
+
+        public readonly Colour4 DarkOrange0 = Color4Extensions.FromHex(@"ffbb99");
+        public readonly Colour4 DarkOrange1 = Color4Extensions.FromHex(@"ff9966");
+        public readonly Colour4 DarkOrange2 = Color4Extensions.FromHex(@"eb7e47");
+        public readonly Colour4 DarkOrange3 = Color4Extensions.FromHex(@"cc6633");
+        public readonly Colour4 DarkOrange4 = Color4Extensions.FromHex(@"6b422e");
+
+        public readonly Colour4 Red0 = Color4Extensions.FromHex(@"ff9b9b");
+        public readonly Colour4 Red1 = Color4Extensions.FromHex(@"ff6666");
+        public readonly Colour4 Red2 = Color4Extensions.FromHex(@"eb4747");
+        public readonly Colour4 Red3 = Color4Extensions.FromHex(@"cc3333");
+        public readonly Colour4 Red4 = Color4Extensions.FromHex(@"6b2e2e");
 
         #endregion
 
         // Content Background
-        public readonly Color4 B5 = Color4Extensions.FromHex(@"222a28");
+        public readonly Colour4 B5 = Color4Extensions.FromHex(@"222a28");
 
-        public readonly Color4 RedLighter = Color4Extensions.FromHex(@"ffeded");
-        public readonly Color4 RedLight = Color4Extensions.FromHex(@"ed7787");
-        public readonly Color4 Red = Color4Extensions.FromHex(@"ed1121");
-        public readonly Color4 RedDark = Color4Extensions.FromHex(@"ba0011");
-        public readonly Color4 RedDarker = Color4Extensions.FromHex(@"870000");
+        public readonly Colour4 RedLighter = Color4Extensions.FromHex(@"ffeded");
+        public readonly Colour4 RedLight = Color4Extensions.FromHex(@"ed7787");
+        public readonly Colour4 Red = Color4Extensions.FromHex(@"ed1121");
+        public readonly Colour4 RedDark = Color4Extensions.FromHex(@"ba0011");
+        public readonly Colour4 RedDarker = Color4Extensions.FromHex(@"870000");
 
-        public readonly Color4 ChatBlue = Color4Extensions.FromHex(@"17292e");
+        public readonly Colour4 ChatBlue = Color4Extensions.FromHex(@"17292e");
 
-        public readonly Color4 ContextMenuGray = Color4Extensions.FromHex(@"223034");
+        public readonly Colour4 ContextMenuGray = Color4Extensions.FromHex(@"223034");
 
-        public Color4 SpotlightColour => Green2;
-        public Color4 FeaturedArtistColour => Blue2;
+        public Colour4 SpotlightColour => Green2;
+        public Colour4 FeaturedArtistColour => Blue2;
 
-        public Color4 DangerousButtonColour => Pink3;
+        public Colour4 DangerousButtonColour => Pink3;
     }
 }
diff --git a/osu.Game/Graphics/ParticleExplosion.cs b/osu.Game/Graphics/ParticleExplosion.cs
index e16913c6c918..533670e2d0d2 100644
--- a/osu.Game/Graphics/ParticleExplosion.cs
+++ b/osu.Game/Graphics/ParticleExplosion.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics
 {
@@ -21,6 +21,7 @@ public partial class ParticleExplosion : Sprite
         private readonly int particleCount;
         private readonly double duration;
         private double startTime;
+        private double animationExpireTime;
 
         private readonly List<ParticlePart> parts = new List<ParticlePart>();
 
@@ -45,6 +46,7 @@ protected override void LoadComplete()
         public void Restart()
         {
             startTime = TransformStartTime;
+            animationExpireTime = startTime + duration;
             this.FadeOutFromOne(duration);
 
             parts.Clear();
@@ -55,7 +57,9 @@ public void Restart()
         protected override void Update()
         {
             base.Update();
-            Invalidate(Invalidation.DrawNode);
+
+            if (Time.Current <= animationExpireTime)
+                Invalidate(Invalidation.DrawNode);
         }
 
         protected override DrawNode CreateDrawNode() => new ParticleExplosionDrawNode(this);
diff --git a/osu.Game/Graphics/ParticleSpewer.cs b/osu.Game/Graphics/ParticleSpewer.cs
index 51fbd134d51a..4f4427a26087 100644
--- a/osu.Game/Graphics/ParticleSpewer.cs
+++ b/osu.Game/Graphics/ParticleSpewer.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics
 {
@@ -64,7 +64,8 @@ protected override void Update()
         {
             base.Update();
 
-            Invalidate(Invalidation.DrawNode);
+            if (hasActiveParticles)
+                Invalidate(Invalidation.DrawNode);
 
             if (!Active.Value || !CanSpawnParticles)
                 return;
diff --git a/osu.Game/Graphics/Sprites/GlowingDrawable.cs b/osu.Game/Graphics/Sprites/GlowingDrawable.cs
index 10085ad38be9..a367e0a8de03 100644
--- a/osu.Game/Graphics/Sprites/GlowingDrawable.cs
+++ b/osu.Game/Graphics/Sprites/GlowingDrawable.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Sprites
 {
diff --git a/osu.Game/Graphics/Sprites/GlowingSpriteText.cs b/osu.Game/Graphics/Sprites/GlowingSpriteText.cs
index 3ac13bf86227..2720a8bc9e4e 100644
--- a/osu.Game/Graphics/Sprites/GlowingSpriteText.cs
+++ b/osu.Game/Graphics/Sprites/GlowingSpriteText.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Sprites
 {
diff --git a/osu.Game/Graphics/Sprites/LogoAnimation.cs b/osu.Game/Graphics/Sprites/LogoAnimation.cs
index f3591de7835f..e38516ce3d3b 100644
--- a/osu.Game/Graphics/Sprites/LogoAnimation.cs
+++ b/osu.Game/Graphics/Sprites/LogoAnimation.cs
@@ -12,9 +12,7 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Shaders.Types;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Graphics.ES30;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Sprites
 {
@@ -124,7 +122,7 @@ private struct LogoAnimationVertex : IEquatable<LogoAnimationVertex>, IVertex
                 public Vector2 Position;
 
                 [VertexMember(4, VertexAttribPointerType.Float)]
-                public Color4 Colour;
+                public Colour4 Colour;
 
                 [VertexMember(2, VertexAttribPointerType.Float)]
                 public Vector2 TexturePosition;
diff --git a/osu.Game/Graphics/Sprites/SizePreservingSpriteText.cs b/osu.Game/Graphics/Sprites/SizePreservingSpriteText.cs
index 458dac2b9136..507fd73ec1e2 100644
--- a/osu.Game/Graphics/Sprites/SizePreservingSpriteText.cs
+++ b/osu.Game/Graphics/Sprites/SizePreservingSpriteText.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.Sprites
 {
@@ -72,7 +71,7 @@ public bool Shadow
         /// <summary>
         /// The colour of the shadow displayed around the text. A shadow will only be displayed if the <see cref="Shadow"/> property is set to true.
         /// </summary>
-        public Color4 ShadowColour
+        public Colour4 ShadowColour
         {
             get => text.ShadowColour;
             set => text.ShadowColour = value;
diff --git a/osu.Game/Graphics/UserInterface/Bar.cs b/osu.Game/Graphics/UserInterface/Bar.cs
index 6d2fc02d2565..20ffc5c174b2 100644
--- a/osu.Game/Graphics/UserInterface/Bar.cs
+++ b/osu.Game/Graphics/UserInterface/Bar.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -32,13 +31,13 @@ public float Length
             }
         }
 
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
             get => background.Colour;
             set => background.Colour = value;
         }
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => bar.Colour;
             set => bar.Colour = value;
@@ -61,7 +60,7 @@ public Bar()
                 background = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = new Color4(0, 0, 0, 0)
+                    Colour = new Colour4(0, 0, 0, 0)
                 },
                 bar = new Box
                 {
diff --git a/osu.Game/Graphics/UserInterface/BarGraph.cs b/osu.Game/Graphics/UserInterface/BarGraph.cs
index 92133019e5c8..985bc3c32894 100644
--- a/osu.Game/Graphics/UserInterface/BarGraph.cs
+++ b/osu.Game/Graphics/UserInterface/BarGraph.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/BasicSearchTextBox.cs b/osu.Game/Graphics/UserInterface/BasicSearchTextBox.cs
index 2e76951e7bf1..5a59e6da8313 100644
--- a/osu.Game/Graphics/UserInterface/BasicSearchTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/BasicSearchTextBox.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/BreadcrumbControl.cs b/osu.Game/Graphics/UserInterface/BreadcrumbControl.cs
index 3f72418c8d1c..0b18dce0c144 100644
--- a/osu.Game/Graphics/UserInterface/BreadcrumbControl.cs
+++ b/osu.Game/Graphics/UserInterface/BreadcrumbControl.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/DialogButton.cs b/osu.Game/Graphics/UserInterface/DialogButton.cs
index f6048eb5e024..6f50779357de 100644
--- a/osu.Game/Graphics/UserInterface/DialogButton.cs
+++ b/osu.Game/Graphics/UserInterface/DialogButton.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -123,7 +121,7 @@ public DialogButton(HoverSampleSet sampleSet = HoverSampleSet.Button)
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(0.2f),
+                                Colour = Colour4.Black.Opacity(0.2f),
                                 Radius = 5,
                             },
                             Colour = ButtonColour,
@@ -163,8 +161,8 @@ public DialogButton(HoverSampleSet sampleSet = HoverSampleSet.Button)
                     Origin = Anchor.Centre,
                     Font = OsuFont.GetFont(size: 28, weight: FontWeight.Bold),
                     Shadow = true,
-                    ShadowColour = new Color4(0, 0, 0, 0.1f),
-                    Colour = Color4.White,
+                    ShadowColour = new Colour4(0, 0, 0, 0.1f),
+                    Colour = Colour4.White,
                 },
             };
 
@@ -173,22 +171,20 @@ public DialogButton(HoverSampleSet sampleSet = HoverSampleSet.Button)
             StateChanged += selectionChanged;
         }
 
-        private Color4 buttonColour;
-
-        public Color4 ButtonColour
+        public Colour4 ButtonColour
         {
-            get => buttonColour;
+            get => field;
             set
             {
-                buttonColour = value;
+                field = value;
                 updateGlow();
                 ColourContainer.Colour = value;
             }
         }
 
-        private Color4 backgroundColour = OsuColour.Gray(34);
+        private Colour4 backgroundColour = OsuColour.Gray(34);
 
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
             get => backgroundColour;
             set
@@ -290,9 +286,9 @@ private void selectionChanged(SelectionState newState)
 
         private void updateGlow()
         {
-            leftGlow.Colour = ColourInfo.GradientHorizontal(new Color4(ButtonColour.R, ButtonColour.G, ButtonColour.B, 0f), ButtonColour);
+            leftGlow.Colour = ColourInfo.GradientHorizontal(new Colour4(ButtonColour.R, ButtonColour.G, ButtonColour.B, 0f), ButtonColour);
             centerGlow.Colour = ButtonColour;
-            rightGlow.Colour = ColourInfo.GradientHorizontal(ButtonColour, new Color4(ButtonColour.R, ButtonColour.G, ButtonColour.B, 0f));
+            rightGlow.Colour = ColourInfo.GradientHorizontal(ButtonColour, new Colour4(ButtonColour.R, ButtonColour.G, ButtonColour.B, 0f));
         }
     }
 }
diff --git a/osu.Game/Graphics/UserInterface/DownloadButton.cs b/osu.Game/Graphics/UserInterface/DownloadButton.cs
index 61769d805e2e..b89e1cab8dbc 100644
--- a/osu.Game/Graphics/UserInterface/DownloadButton.cs
+++ b/osu.Game/Graphics/UserInterface/DownloadButton.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Online;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/DrawableOsuMenuItem.cs b/osu.Game/Graphics/UserInterface/DrawableOsuMenuItem.cs
index cd44bd8fb955..b7e032b22524 100644
--- a/osu.Game/Graphics/UserInterface/DrawableOsuMenuItem.cs
+++ b/osu.Game/Graphics/UserInterface/DrawableOsuMenuItem.cs
@@ -15,8 +15,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -41,7 +40,7 @@ public DrawableOsuMenuItem(MenuItem item)
         [BackgroundDependencyLoader]
         private void load()
         {
-            BackgroundColour = Color4.Transparent;
+            BackgroundColour = Colour4.Transparent;
             BackgroundColourHover = Color4Extensions.FromHex(@"172023");
 
             AddInternal(hotkey = new HotkeyDisplay
@@ -88,11 +87,11 @@ private void updateText()
             {
                 default:
                 case MenuItemType.Standard:
-                    text.Colour = Color4.White;
+                    text.Colour = Colour4.White;
                     break;
 
                 case MenuItemType.Destructive:
-                    text.Colour = Color4.Red;
+                    text.Colour = Colour4.Red;
                     break;
 
                 case MenuItemType.Highlighted:
diff --git a/osu.Game/Graphics/UserInterface/DrawableStatefulMenuItem.cs b/osu.Game/Graphics/UserInterface/DrawableStatefulMenuItem.cs
index 8812696493b1..cdb8193d1191 100644
--- a/osu.Game/Graphics/UserInterface/DrawableStatefulMenuItem.cs
+++ b/osu.Game/Graphics/UserInterface/DrawableStatefulMenuItem.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ExpandableSlider.cs b/osu.Game/Graphics/UserInterface/ExpandableSlider.cs
index addf4c91102b..ec0f0dd6a5db 100644
--- a/osu.Game/Graphics/UserInterface/ExpandableSlider.cs
+++ b/osu.Game/Graphics/UserInterface/ExpandableSlider.cs
@@ -11,7 +11,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2;
-using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ExpandingBar.cs b/osu.Game/Graphics/UserInterface/ExpandingBar.cs
index c1262322d5f9..96c7069daddf 100644
--- a/osu.Game/Graphics/UserInterface/ExpandingBar.cs
+++ b/osu.Game/Graphics/UserInterface/ExpandingBar.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs b/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
index e5a4e807b580..1a9f3a73820a 100644
--- a/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
+++ b/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
@@ -11,8 +11,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -20,7 +19,7 @@ public partial class ExternalLinkButton : CompositeDrawable, IHasTooltip, IHasCo
     {
         public string? Link { get; set; }
 
-        private Color4 hoverColour;
+        private Colour4 hoverColour;
 
         [Resolved]
         private OsuGame? game { get; set; }
@@ -56,7 +55,7 @@ protected override bool OnHover(HoverEvent e)
 
         protected override void OnHoverLost(HoverLostEvent e)
         {
-            linkIcon.FadeColour(Color4.White, 500, Easing.OutQuint);
+            linkIcon.FadeColour(Colour4.White, 500, Easing.OutQuint);
             base.OnHoverLost(e);
         }
 
diff --git a/osu.Game/Graphics/UserInterface/FPSCounter.cs b/osu.Game/Graphics/UserInterface/FPSCounter.cs
index 3bc3651b3c3b..a4362e4e5dd6 100644
--- a/osu.Game/Graphics/UserInterface/FPSCounter.cs
+++ b/osu.Game/Graphics/UserInterface/FPSCounter.cs
@@ -16,7 +16,7 @@
 using osu.Framework.Utils;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/FPSCounterTooltip.cs b/osu.Game/Graphics/UserInterface/FPSCounterTooltip.cs
index 2faf03d2f414..f36cf455121a 100644
--- a/osu.Game/Graphics/UserInterface/FPSCounterTooltip.cs
+++ b/osu.Game/Graphics/UserInterface/FPSCounterTooltip.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Platform;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/FocusedTextBox.cs b/osu.Game/Graphics/UserInterface/FocusedTextBox.cs
index e1a18bcbc140..d80668e7e8e8 100644
--- a/osu.Game/Graphics/UserInterface/FocusedTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/FocusedTextBox.cs
@@ -7,8 +7,8 @@
 using osu.Framework.Platform;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -51,8 +51,8 @@ public bool HoldFocus
         [BackgroundDependencyLoader(true)]
         private void load(OverlayColourProvider? colourProvider)
         {
-            BackgroundUnfocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
-            BackgroundFocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
+            BackgroundUnfocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
+            BackgroundFocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
         }
 
         // We may not be focused yet, but we need to handle keyboard input to be able to request focus
diff --git a/osu.Game/Graphics/UserInterface/GradientLineTabControl.cs b/osu.Game/Graphics/UserInterface/GradientLineTabControl.cs
index 1366063b2558..4a3068c3d7f3 100644
--- a/osu.Game/Graphics/UserInterface/GradientLineTabControl.cs
+++ b/osu.Game/Graphics/UserInterface/GradientLineTabControl.cs
@@ -8,14 +8,13 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public abstract partial class GradientLineTabControl<TModel> : PageTabControl<TModel>
     {
-        protected Color4 LineColour
+        protected Colour4 LineColour
         {
             get => line.Colour;
             set => line.Colour = value;
@@ -60,12 +59,12 @@ public GradientLine()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientHorizontal(Color4.Transparent, Colour)
+                            Colour = ColourInfo.GradientHorizontal(Colour4.Transparent, Colour)
                         },
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientHorizontal(Colour, Color4.Transparent)
+                            Colour = ColourInfo.GradientHorizontal(Colour, Colour4.Transparent)
                         },
                     }
                 };
diff --git a/osu.Game/Graphics/UserInterface/GrayButton.cs b/osu.Game/Graphics/UserInterface/GrayButton.cs
index 3df234e97dd7..6231e25dec01 100644
--- a/osu.Game/Graphics/UserInterface/GrayButton.cs
+++ b/osu.Game/Graphics/UserInterface/GrayButton.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/HistoryTextBox.cs b/osu.Game/Graphics/UserInterface/HistoryTextBox.cs
index b6dc1fcc9b89..0f89dab32ce3 100644
--- a/osu.Game/Graphics/UserInterface/HistoryTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/HistoryTextBox.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Input.Events;
 using osu.Game.Utils;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/HotkeyDisplay.cs b/osu.Game/Graphics/UserInterface/HotkeyDisplay.cs
index 89dec6e3a03f..9b7d880df129 100644
--- a/osu.Game/Graphics/UserInterface/HotkeyDisplay.cs
+++ b/osu.Game/Graphics/UserInterface/HotkeyDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/HoverClickSounds.cs b/osu.Game/Graphics/UserInterface/HoverClickSounds.cs
index f1c14eb6b530..03829c105906 100644
--- a/osu.Game/Graphics/UserInterface/HoverClickSounds.cs
+++ b/osu.Game/Graphics/UserInterface/HoverClickSounds.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Extensions;
 using osu.Framework.Input.Events;
 using osu.Game.Audio;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/HoverSampleDebounceComponent.cs b/osu.Game/Graphics/UserInterface/HoverSampleDebounceComponent.cs
index fee81e0e22a2..ceb3b939a692 100644
--- a/osu.Game/Graphics/UserInterface/HoverSampleDebounceComponent.cs
+++ b/osu.Game/Graphics/UserInterface/HoverSampleDebounceComponent.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
 using osu.Game.Configuration;
-using osuTK;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -19,7 +18,7 @@ public abstract partial class HoverSampleDebounceComponent : Component
     {
         private Bindable<double?> lastPlaybackTime;
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => Parent?.ReceivePositionalInputAt(screenSpacePos) == true;
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => Parent?.ReceivePositionalInputAt(screenSpacePos) == true;
 
         [BackgroundDependencyLoader]
         private void load(SessionStatics statics)
diff --git a/osu.Game/Graphics/UserInterface/IconButton.cs b/osu.Game/Graphics/UserInterface/IconButton.cs
index f3b1a0cda9b7..78d3873cd7e4 100644
--- a/osu.Game/Graphics/UserInterface/IconButton.cs
+++ b/osu.Game/Graphics/UserInterface/IconButton.cs
@@ -4,8 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -13,14 +12,14 @@ public partial class IconButton : OsuAnimatedButton
     {
         public const float DEFAULT_BUTTON_SIZE = 30;
 
-        private Color4? iconColour;
+        private Colour4? iconColour;
 
         /// <summary>
         /// The icon colour. This does not affect <see cref="Drawable.Colour">Colour</see>.
         /// </summary>
-        public Color4 IconColour
+        public Colour4 IconColour
         {
-            get => iconColour ?? Color4.White;
+            get => iconColour ?? Colour4.White;
             set
             {
                 iconColour = value;
@@ -28,12 +27,12 @@ public Color4 IconColour
             }
         }
 
-        private Color4? iconHoverColour;
+        private Colour4? iconHoverColour;
 
         /// <summary>
         /// The icon colour while the <see cref="IconButton"/> is hovered.
         /// </summary>
-        public Color4 IconHoverColour
+        public Colour4 IconHoverColour
         {
             get => iconHoverColour ?? IconColour;
             set => iconHoverColour = value;
diff --git a/osu.Game/Graphics/UserInterface/LineGraph.cs b/osu.Game/Graphics/UserInterface/LineGraph.cs
index 3e3864f1f9ca..c9af4f96e287 100644
--- a/osu.Game/Graphics/UserInterface/LineGraph.cs
+++ b/osu.Game/Graphics/UserInterface/LineGraph.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Lines;
 using osu.Framework.Layout;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -66,7 +65,7 @@ public IEnumerable<float> Values
             }
         }
 
-        public Color4 LineColour
+        public Colour4 LineColour
         {
             get => maskingContainer.Colour;
             set => maskingContainer.Colour = value;
diff --git a/osu.Game/Graphics/UserInterface/LoadingButton.cs b/osu.Game/Graphics/UserInterface/LoadingButton.cs
index 9373914aa3cf..bb5262e1f3ed 100644
--- a/osu.Game/Graphics/UserInterface/LoadingButton.cs
+++ b/osu.Game/Graphics/UserInterface/LoadingButton.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/LoadingLayer.cs b/osu.Game/Graphics/UserInterface/LoadingLayer.cs
index 0a5801475e63..95e447c4d210 100644
--- a/osu.Game/Graphics/UserInterface/LoadingLayer.cs
+++ b/osu.Game/Graphics/UserInterface/LoadingLayer.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -51,7 +50,7 @@ public LoadingLayer(bool dimBackground = false, bool withBox = true)
                 AddInternal(new Box
                 {
                     Depth = float.MaxValue,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.5f,
                     RelativeSizeAxes = Axes.Both,
                 });
diff --git a/osu.Game/Graphics/UserInterface/LoadingSpinner.cs b/osu.Game/Graphics/UserInterface/LoadingSpinner.cs
index 58789ec68090..269e01365c89 100644
--- a/osu.Game/Graphics/UserInterface/LoadingSpinner.cs
+++ b/osu.Game/Graphics/UserInterface/LoadingSpinner.cs
@@ -2,15 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Diagnostics;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -62,14 +60,14 @@ public LoadingSpinner(bool withBox = false, bool inverted = false)
                     {
                         new Box
                         {
-                            Colour = inverted ? Color4.White : Color4.Black,
+                            Colour = inverted ? Colour4.White : Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                             Alpha = 0.7f,
                         },
                         triangles = new TrianglesV2
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = inverted ? Color4.White : Color4.Black,
+                            Colour = inverted ? Colour4.White : Colour4.Black,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
                             Alpha = 0.2f,
@@ -81,7 +79,7 @@ public LoadingSpinner(bool withBox = false, bool inverted = false)
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Custom,
-                            Colour = inverted ? Color4.Black : Color4.White,
+                            Colour = inverted ? Colour4.Black : Colour4.White,
                             Scale = new Vector2(0.6f),
                             RelativeSizeAxes = Axes.Both,
                             Icon = FontAwesome.Solid.CircleNotch
@@ -104,7 +102,7 @@ public LoadingSpinner(bool withBox = false, bool inverted = false)
                             {
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Custom,
-                                Colour = inverted ? Color4.Black : Color4.White,
+                                Colour = inverted ? Colour4.Black : Colour4.White,
                                 RelativeSizeAxes = Axes.Both,
                                 Icon = FontAwesome.Solid.CircleNotch
                             }
@@ -126,8 +124,8 @@ public LoadingSpinner(bool withBox = false, bool inverted = false)
                                 Origin = Anchor.Centre,
                                 Alpha = 0.4f,
                                 Colour = ColourInfo.GradientVertical(
-                                    inverted ? Color4.Black.Opacity(0) : Color4.White.Opacity(0),
-                                    inverted ? Color4.Black : Color4.White),
+                                    inverted ? Colour4.Black.Opacity(0) : Colour4.White.Opacity(0),
+                                    inverted ? Colour4.Black : Colour4.White),
                                 RelativeSizeAxes = Axes.Both,
                                 ScaleAdjust = 0.4f,
                                 SpawnRatio = 4,
diff --git a/osu.Game/Graphics/UserInterface/Nub.cs b/osu.Game/Graphics/UserInterface/Nub.cs
index abb82c5e1f76..7f00659ea9bb 100644
--- a/osu.Game/Graphics/UserInterface/Nub.cs
+++ b/osu.Game/Graphics/UserInterface/Nub.cs
@@ -4,15 +4,13 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -35,7 +33,7 @@ public Nub(float expandedSize = DEFAULT_EXPANDED_SIZE)
             {
                 main = new CircularContainer
                 {
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     BorderThickness = border_width,
                     Masking = true,
                     RelativeSizeAxes = Axes.Both,
@@ -90,7 +88,7 @@ public bool Glowing
                         .Then()
                         .FadeColour(GlowingAccentColour, 800, Easing.OutQuint);
 
-                    main.FadeEdgeEffectTo(Color4.White.Opacity(0.1f), 40, Easing.OutQuint)
+                    main.FadeEdgeEffectTo(Colour4.White.Opacity(0.1f), 40, Easing.OutQuint)
                         .Then()
                         .FadeEdgeEffectTo(GlowColour.Opacity(0.1f), 800, Easing.OutQuint);
                 }
@@ -114,40 +112,34 @@ public Bindable<bool> Current
             }
         } = new Bindable<bool>();
 
-        private Color4 accentColour;
-
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
-            get => accentColour;
+            get => field;
             set
             {
-                accentColour = value;
+                field = value;
                 if (!Glowing)
                     main.Colour = value;
             }
         }
 
-        private Color4 glowingAccentColour;
-
-        public Color4 GlowingAccentColour
+        public Colour4 GlowingAccentColour
         {
-            get => glowingAccentColour;
+            get;
             set
             {
-                glowingAccentColour = value;
+                field = value;
                 if (Glowing)
                     main.Colour = value;
             }
         }
 
-        private Color4 glowColour;
-
-        public Color4 GlowColour
+        public Colour4 GlowColour
         {
-            get => glowColour;
+            get => field;
             set
             {
-                glowColour = value;
+                field = value;
 
                 var effect = main.EdgeEffect;
                 effect.Colour = Glowing ? value : value.Opacity(0);
diff --git a/osu.Game/Graphics/UserInterface/OsuAnimatedButton.cs b/osu.Game/Graphics/UserInterface/OsuAnimatedButton.cs
index 87aa4547d4bf..370cc85a3673 100644
--- a/osu.Game/Graphics/UserInterface/OsuAnimatedButton.cs
+++ b/osu.Game/Graphics/UserInterface/OsuAnimatedButton.cs
@@ -2,14 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -21,24 +19,22 @@ public partial class OsuAnimatedButton : OsuClickableContainer
         /// <summary>
         /// The colour that should be flashed when the <see cref="OsuAnimatedButton"/> is clicked.
         /// </summary>
-        protected Color4 FlashColour = Color4.White.Opacity(0.3f);
-
-        private Color4 hoverColour = Color4.White.Opacity(0.1f);
+        protected Colour4 FlashColour = Colour4.White.Opacity(0.3f);
 
         protected float ScaleOnMouseDown { get; init; } = 0.75f;
 
         /// <summary>
         /// The background colour of the <see cref="OsuAnimatedButton"/> while it is hovered.
         /// </summary>
-        protected Color4 HoverColour
+        protected Colour4 HoverColour
         {
-            get => hoverColour;
+            get => field;
             set
             {
-                hoverColour = value;
+                field = value;
                 hover.Colour = value;
             }
-        }
+        } = Colour4.White.Opacity(0.1f);
 
         [Resolved]
         private OsuColour colours { get; set; } = null!;
@@ -61,7 +57,7 @@ public OsuAnimatedButton(HoverSampleSet sampleSet = HoverSampleSet.Button)
                 Masking = true,
                 EdgeEffect = new EdgeEffectParameters
                 {
-                    Colour = Color4.Black.Opacity(0.04f),
+                    Colour = Colour4.Black.Opacity(0.04f),
                     Type = EdgeEffectType.Shadow,
                     Radius = 5,
                 },
@@ -96,7 +92,7 @@ protected override void LoadComplete()
             FinishTransforms(true);
         }
 
-        protected virtual Colour4 DimColour => Enabled.Value ? Color4.White : colours.Gray9;
+        protected virtual Colour4 DimColour => Enabled.Value ? Colour4.White : colours.Gray9;
 
         protected override bool OnHover(HoverEvent e)
         {
diff --git a/osu.Game/Graphics/UserInterface/OsuButton.cs b/osu.Game/Graphics/UserInterface/OsuButton.cs
index 6467ae578392..fe43d339f99f 100644
--- a/osu.Game/Graphics/UserInterface/OsuButton.cs
+++ b/osu.Game/Graphics/UserInterface/OsuButton.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -11,8 +10,6 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -27,12 +24,12 @@ public LocalisableString Text
             set => SpriteText.Text = value;
         }
 
-        private Color4? backgroundColour;
+        private Colour4? backgroundColour;
 
         /// <summary>
         /// Sets a custom background colour to this button, replacing the provided default.
         /// </summary>
-        public virtual Color4 BackgroundColour
+        public virtual Colour4 BackgroundColour
         {
             get => backgroundColour ?? defaultBackgroundColour;
             set
@@ -42,12 +39,12 @@ public virtual Color4 BackgroundColour
             }
         }
 
-        private Color4 defaultBackgroundColour;
+        private Colour4 defaultBackgroundColour;
 
         /// <summary>
         /// Sets a default background colour to this button.
         /// </summary>
-        protected Color4 DefaultBackgroundColour
+        protected Colour4 DefaultBackgroundColour
         {
             get => defaultBackgroundColour;
             set
@@ -61,7 +58,7 @@ protected Color4 DefaultBackgroundColour
 
         protected override Container<Drawable> Content { get; }
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) =>
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) =>
             // base call is checked for cases when `OsuClickableContainer` has masking applied to it directly (ie. externally in object initialisation).
             base.ReceivePositionalInputAt(screenSpacePos)
             // Implementations often apply masking / edge rounding at a content level, so it's imperative to check that as well.
@@ -99,7 +96,7 @@ protected OsuButton(HoverSampleSet? hoverSounds = HoverSampleSet.Button)
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Blending = BlendingParameters.Additive,
                         Depth = float.MinValue
                     },
@@ -109,7 +106,7 @@ protected OsuButton(HoverSampleSet? hoverSounds = HoverSampleSet.Button)
                         RelativeSizeAxes = Axes.Both,
                         Blending = BlendingParameters.Additive,
                         Depth = float.MinValue,
-                        Colour = Color4.White.Opacity(0.5f),
+                        Colour = Colour4.White.Opacity(0.5f),
                         Alpha = 0,
                     },
                 }
@@ -133,7 +130,7 @@ protected override void LoadComplete()
             Enabled.BindValueChanged(_ => this.FadeColour(dimColour, 200, Easing.OutQuint));
         }
 
-        private Color4 dimColour => Enabled.Value ? Color4.White : Color4.Gray;
+        private Colour4 dimColour => Enabled.Value ? Colour4.White : Colour4.Gray;
 
         protected override bool OnClick(ClickEvent e)
         {
diff --git a/osu.Game/Graphics/UserInterface/OsuContextMenu.cs b/osu.Game/Graphics/UserInterface/OsuContextMenu.cs
index 5eecfaa1b0b0..a136cf882aec 100644
--- a/osu.Game/Graphics/UserInterface/OsuContextMenu.cs
+++ b/osu.Game/Graphics/UserInterface/OsuContextMenu.cs
@@ -2,11 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -22,7 +20,7 @@ public OsuContextMenu(bool playSamples)
             MaskingContainer.EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.1f),
+                Colour = Colour4.Black.Opacity(0.1f),
                 Radius = 4,
             };
 
diff --git a/osu.Game/Graphics/UserInterface/OsuDropdown.cs b/osu.Game/Graphics/UserInterface/OsuDropdown.cs
index f4a4acf90a8a..088bbc4bcb0e 100644
--- a/osu.Game/Graphics/UserInterface/OsuDropdown.cs
+++ b/osu.Game/Graphics/UserInterface/OsuDropdown.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -19,8 +18,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -76,7 +74,7 @@ public OsuDropdownMenu()
             [BackgroundDependencyLoader(true)]
             private void load(OverlayColourProvider? colourProvider, OsuColour colours, AudioManager audio)
             {
-                BackgroundColour = colourProvider?.Background5 ?? Color4.Black;
+                BackgroundColour = colourProvider?.Background5 ?? Colour4.Black;
                 HoverColour = colourProvider?.Light4 ?? colours.PinkDarker;
                 SelectionColour = colourProvider?.Background3 ?? colours.PinkDarker.Opacity(0.5f);
 
@@ -127,9 +125,9 @@ protected override void UpdateSize(Vector2 newSize)
                 }
             }
 
-            private Color4 hoverColour;
+            private Colour4 hoverColour;
 
-            public Color4 HoverColour
+            public Colour4 HoverColour
             {
                 get => hoverColour;
                 set
@@ -140,9 +138,9 @@ public Color4 HoverColour
                 }
             }
 
-            private Color4 selectionColour;
+            private Colour4 selectionColour;
 
-            public Color4 SelectionColour
+            public Colour4 SelectionColour
             {
                 get => selectionColour;
                 set
@@ -199,7 +197,7 @@ public partial class DrawableOsuDropdownMenuItem : DrawableDropdownMenuItem
                 // IsHovered is used
                 public override bool HandlePositionalInput => true;
 
-                public new Color4 BackgroundColourHover
+                public new Colour4 BackgroundColourHover
                 {
                     get => base.BackgroundColourHover;
                     set
@@ -209,7 +207,7 @@ public partial class DrawableOsuDropdownMenuItem : DrawableDropdownMenuItem
                     }
                 }
 
-                public new Color4 BackgroundColourSelected
+                public new Colour4 BackgroundColourSelected
                 {
                     get => base.BackgroundColourSelected;
                     set
@@ -308,7 +306,7 @@ public Content()
                     [BackgroundDependencyLoader(true)]
                     private void load(OverlayColourProvider? colourProvider)
                     {
-                        Chevron.Colour = colourProvider?.Background5 ?? Color4.Black;
+                        Chevron.Colour = colourProvider?.Background5 ?? Colour4.Black;
                     }
 
                     public bool Hovering
@@ -434,9 +432,9 @@ private void updateColour()
             {
                 bool hovered = Enabled.Value && IsHovered;
                 var hoveredColour = colourProvider?.Light4 ?? colours.PinkDarker;
-                var unhoveredColour = colourProvider?.Background5 ?? Color4.Black;
+                var unhoveredColour = colourProvider?.Background5 ?? Colour4.Black;
 
-                Colour = Color4.White;
+                Colour = Colour4.White;
                 Alpha = Enabled.Value ? 1 : 0.3f;
 
                 if (SearchBar.State.Value == Visibility.Visible)
@@ -446,7 +444,7 @@ private void updateColour()
                 }
                 else
                 {
-                    Chevron.Colour = Color4.White;
+                    Chevron.Colour = Colour4.White;
                     Background.Colour = hovered ? hoveredColour : unhoveredColour;
                 }
             }
@@ -484,8 +482,8 @@ public DropdownSearchTextBox()
                     [BackgroundDependencyLoader]
                     private void load(OverlayColourProvider? colourProvider)
                     {
-                        BackgroundUnfocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
-                        BackgroundFocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
+                        BackgroundUnfocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
+                        BackgroundFocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
                     }
 
                     protected override void OnFocus(FocusEvent e)
diff --git a/osu.Game/Graphics/UserInterface/OsuMenu.cs b/osu.Game/Graphics/UserInterface/OsuMenu.cs
index 11d9000dfa06..7700dc43030b 100644
--- a/osu.Game/Graphics/UserInterface/OsuMenu.cs
+++ b/osu.Game/Graphics/UserInterface/OsuMenu.cs
@@ -4,15 +4,13 @@
 #nullable disable
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -38,7 +36,7 @@ protected OsuMenu(Direction direction, bool topLevelMenu, bool playSamples)
             : base(direction, topLevelMenu)
         {
             PlaySamples = playSamples;
-            BackgroundColour = Color4.Black.Opacity(0.5f);
+            BackgroundColour = Colour4.Black.Opacity(0.5f);
 
             MaskingContainer.CornerRadius = 4;
             ItemsContainer.Padding = new MarginPadding(5);
diff --git a/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs b/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
index 3fb8a1eab3db..a2945ce42d3a 100644
--- a/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
@@ -12,9 +12,7 @@
 using osu.Framework.Localisation;
 using osu.Framework.Platform;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -89,7 +87,7 @@ public PasswordMaskChar(float size)
                         {
                             new Box
                             {
-                                Colour = Color4.White,
+                                Colour = Colour4.White,
                                 RelativeSizeAxes = Axes.Both,
                             }
                         },
diff --git a/osu.Game/Graphics/UserInterface/OsuSliderBar.cs b/osu.Game/Graphics/UserInterface/OsuSliderBar.cs
index 72e3b19a6a27..150444597f9e 100644
--- a/osu.Game/Graphics/UserInterface/OsuSliderBar.cs
+++ b/osu.Game/Graphics/UserInterface/OsuSliderBar.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
@@ -10,6 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Framework.Utils;
 using osu.Game.Extensions;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/OsuTabControl.cs b/osu.Game/Graphics/UserInterface/OsuTabControl.cs
index 1961f71dbc49..1247844fb1b9 100644
--- a/osu.Game/Graphics/UserInterface/OsuTabControl.cs
+++ b/osu.Game/Graphics/UserInterface/OsuTabControl.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
@@ -19,18 +18,17 @@
 using osu.Framework.Localisation;
 using osu.Framework.Utils;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public partial class OsuTabControl<T> : TabControl<T>
     {
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
         public const float HORIZONTAL_SPACING = 10;
 
-        public virtual Color4 AccentColour
+        public virtual Colour4 AccentColour
         {
             get => accentColour;
             set
@@ -68,7 +66,7 @@ public OsuTabControl()
                 Anchor = Anchor.BottomLeft,
                 Origin = Anchor.BottomLeft,
                 Height = 1,
-                Colour = Color4.White.Opacity(0),
+                Colour = Colour4.White.Opacity(0),
             });
 
             if (isEnumType && AddEnumEntriesAutomatically)
@@ -85,7 +83,7 @@ private void load(OsuColour colours)
                 AccentColour = colours.Blue;
         }
 
-        public Color4 StripColour
+        public Colour4 StripColour
         {
             get => strip.Colour;
             set => strip.Colour = value;
@@ -105,9 +103,9 @@ public partial class OsuTabItem : TabItem<T>, IHasAccentColour
             protected readonly SpriteText Text;
             protected readonly Box Bar;
 
-            private Color4 accentColour;
+            private Colour4 accentColour;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => accentColour;
                 set
@@ -123,13 +121,13 @@ public Color4 AccentColour
             protected virtual void FadeHovered()
             {
                 Bar.FadeIn(TRANSITION_LENGTH, Easing.OutQuint);
-                Text.FadeColour(Color4.White, TRANSITION_LENGTH, Easing.OutQuint);
+                Text.FadeColour(Colour4.White, TRANSITION_LENGTH, Easing.OutQuint);
             }
 
             protected virtual void FadeUnhovered()
             {
                 Bar.FadeTo(IsHovered ? 1 : 0, TRANSITION_LENGTH, Easing.OutQuint);
-                Text.FadeColour(IsHovered ? Color4.White : AccentColour, TRANSITION_LENGTH, Easing.OutQuint);
+                Text.FadeColour(IsHovered ? Colour4.White : AccentColour, TRANSITION_LENGTH, Easing.OutQuint);
             }
 
             protected override bool OnHover(HoverEvent e)
@@ -187,7 +185,7 @@ public OsuTabItem(T value)
                         RelativeSizeAxes = Axes.X,
                         Height = 1,
                         Alpha = 0,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Origin = Anchor.BottomLeft,
                         Anchor = Anchor.BottomLeft,
                     },
diff --git a/osu.Game/Graphics/UserInterface/OsuTabControlCheckbox.cs b/osu.Game/Graphics/UserInterface/OsuTabControlCheckbox.cs
index ab4591081d27..315022dafe44 100644
--- a/osu.Game/Graphics/UserInterface/OsuTabControlCheckbox.cs
+++ b/osu.Game/Graphics/UserInterface/OsuTabControlCheckbox.cs
@@ -14,8 +14,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -27,9 +26,9 @@ public partial class OsuTabControlCheckbox : Checkbox
         private readonly Box box;
         private readonly SpriteText text;
 
-        private Color4? accentColour;
+        private Colour4? accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour.GetValueOrDefault();
             set
@@ -79,7 +78,7 @@ public OsuTabControlCheckbox()
                     RelativeSizeAxes = Axes.X,
                     Height = 1,
                     Alpha = 0,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Origin = Anchor.BottomLeft,
                     Anchor = Anchor.BottomLeft,
                 }
@@ -136,7 +135,7 @@ protected override void OnUserChange(bool value)
         private void updateFade()
         {
             box.FadeTo(Current.Value || IsHovered ? 1 : 0, transition_length, Easing.OutQuint);
-            text.FadeColour(Current.Value || IsHovered ? Color4.White : AccentColour, transition_length, Easing.OutQuint);
+            text.FadeColour(Current.Value || IsHovered ? Colour4.White : AccentColour, transition_length, Easing.OutQuint);
         }
     }
 }
diff --git a/osu.Game/Graphics/UserInterface/OsuTabDropdown.cs b/osu.Game/Graphics/UserInterface/OsuTabDropdown.cs
index bed494e398bf..9a6c8b8a9a1b 100644
--- a/osu.Game/Graphics/UserInterface/OsuTabDropdown.cs
+++ b/osu.Game/Graphics/UserInterface/OsuTabDropdown.cs
@@ -1,21 +1,19 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
     public partial class OsuTabDropdown<T> : OsuDropdown<T>, IHasAccentColour
     {
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
@@ -65,7 +63,7 @@ public OsuTabDropdownMenu()
                 Anchor = Anchor.TopRight;
                 Origin = Anchor.TopRight;
 
-                BackgroundColour = Color4.Black.Opacity(0.7f);
+                BackgroundColour = Colour4.Black.Opacity(0.7f);
                 MaxHeight = 200;
             }
 
@@ -76,16 +74,16 @@ private partial class DrawableOsuTabDropdownMenuItem : DrawableOsuDropdownMenuIt
                 public DrawableOsuTabDropdownMenuItem(MenuItem item)
                     : base(item)
                 {
-                    ForegroundColourHover = Color4.Black;
+                    ForegroundColourHover = Colour4.Black;
                 }
             }
         }
 
         protected partial class OsuTabDropdownHeader : OsuDropdownHeader, IHasAccentColour
         {
-            private Color4 accentColour;
+            private Colour4 accentColour;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => accentColour;
                 set
@@ -101,7 +99,7 @@ public OsuTabDropdownHeader()
                 RelativeSizeAxes = Axes.None;
                 AutoSizeAxes = Axes.X;
 
-                BackgroundColour = Color4.Black.Opacity(0.5f);
+                BackgroundColour = Colour4.Black.Opacity(0.5f);
 
                 Background.Height = 0.5f;
                 Background.CornerRadius = 5;
diff --git a/osu.Game/Graphics/UserInterface/OsuTextBox.cs b/osu.Game/Graphics/UserInterface/OsuTextBox.cs
index 9b608dc0944e..6da0e8900b53 100644
--- a/osu.Game/Graphics/UserInterface/OsuTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/OsuTextBox.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
@@ -19,8 +18,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -83,14 +80,14 @@ public OsuTextBox()
         [BackgroundDependencyLoader(true)]
         private void load(OverlayColourProvider? colourProvider, OsuColour colour, AudioManager audio)
         {
-            BackgroundUnfocused = colourProvider?.Background5 ?? Color4.Black.Opacity(0.5f);
+            BackgroundUnfocused = colourProvider?.Background5 ?? Colour4.Black.Opacity(0.5f);
             BackgroundFocused = colourProvider?.Background4 ?? OsuColour.Gray(0.3f).Opacity(0.8f);
             BackgroundCommit = BorderColour = colourProvider?.Highlight1 ?? colour.Yellow;
-            selectionColour = colourProvider?.Background1 ?? new Color4(249, 90, 255, 255);
+            selectionColour = colourProvider?.Background1 ?? new Colour4(249, 90, 255, 255);
 
             caret?.SelectionColour = selectionColour;
 
-            Placeholder.Colour = colourProvider?.Foreground1 ?? new Color4(180, 180, 180, 255);
+            Placeholder.Colour = colourProvider?.Foreground1 ?? new Colour4(180, 180, 180, 255);
 
             // Note that `KeyBindingRow` uses similar logic for input feedback, so remember to update there if changing here.
             var textAddedSamples = new Sample?[4];
@@ -112,9 +109,9 @@ private void load(OverlayColourProvider? colourProvider, OsuColour colour, Audio
             };
         }
 
-        private Color4 selectionColour;
+        private Colour4 selectionColour;
 
-        protected override Color4 SelectionColour => selectionColour;
+        protected override Colour4 SelectionColour => selectionColour;
 
         protected override void OnUserTextAdded(string added)
         {
@@ -324,7 +321,7 @@ private partial class OsuCaret : Caret
 
             public OsuCaret()
             {
-                Colour = Color4.Transparent;
+                Colour = Colour4.Transparent;
 
                 InternalChild = beatSync = new CaretBeatSyncedContainer
                 {
@@ -341,23 +338,23 @@ public OsuCaret()
 
             public float CaretWidth { get; set; }
 
-            public Color4 SelectionColour { get; set; }
+            public Colour4 SelectionColour { get; set; }
 
-            public override void DisplayAt(Vector2 position, float? selectionWidth)
+            public override void DisplayAt(System.Numerics.Vector2 position, float? selectionWidth)
             {
                 beatSync.HasSelection = selectionWidth != null;
 
                 if (selectionWidth != null)
                 {
-                    this.MoveTo(new Vector2(position.X, position.Y), 60, Easing.Out);
+                    this.MoveTo(new System.Numerics.Vector2(position.X, position.Y), 60, Easing.Out);
                     this.ResizeWidthTo(selectionWidth.Value + CaretWidth / 2, caret_move_time, Easing.Out);
                     this.FadeColour(SelectionColour, 200, Easing.Out);
                 }
                 else
                 {
-                    this.MoveTo(new Vector2(position.X - CaretWidth / 2, position.Y), 60, Easing.Out);
+                    this.MoveTo(new System.Numerics.Vector2(position.X - CaretWidth / 2, position.Y), 60, Easing.Out);
                     this.ResizeWidthTo(CaretWidth, caret_move_time, Easing.Out);
-                    this.FadeColour(Color4.White, 200, Easing.Out);
+                    this.FadeColour(Colour4.White, 200, Easing.Out);
                 }
             }
 
@@ -382,7 +379,7 @@ public CaretBeatSyncedContainer()
                     InternalChild = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                     };
                 }
 
diff --git a/osu.Game/Graphics/UserInterface/PageSelector/PageSelectorPrevNextButton.cs b/osu.Game/Graphics/UserInterface/PageSelector/PageSelectorPrevNextButton.cs
index e5e0dab2f035..f7e263790e14 100644
--- a/osu.Game/Graphics/UserInterface/PageSelector/PageSelectorPrevNextButton.cs
+++ b/osu.Game/Graphics/UserInterface/PageSelector/PageSelectorPrevNextButton.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface.PageSelector
 {
diff --git a/osu.Game/Graphics/UserInterface/PageTabControl.cs b/osu.Game/Graphics/UserInterface/PageTabControl.cs
index 6bbc6ae4ec26..3657b28361e6 100644
--- a/osu.Game/Graphics/UserInterface/PageTabControl.cs
+++ b/osu.Game/Graphics/UserInterface/PageTabControl.cs
@@ -15,8 +15,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -43,9 +42,9 @@ public partial class PageTabItem : TabItem<T>, IHasAccentColour
 
             protected readonly SpriteText Text;
 
-            private Color4 accentColour;
+            private Colour4 accentColour;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => accentColour;
                 set
@@ -78,7 +77,7 @@ public PageTabItem(T value)
                         RelativeSizeAxes = Axes.X,
                         Height = 5,
                         Scale = new Vector2(1f, 0f),
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Origin = Anchor.BottomLeft,
                         Anchor = Anchor.BottomLeft,
                     },
diff --git a/osu.Game/Graphics/UserInterface/ProgressBar.cs b/osu.Game/Graphics/UserInterface/ProgressBar.cs
index 1169d4ca8818..e6138ef6e6eb 100644
--- a/osu.Game/Graphics/UserInterface/ProgressBar.cs
+++ b/osu.Game/Graphics/UserInterface/ProgressBar.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -21,12 +20,12 @@ public partial class ProgressBar : SliderBar<double>
         private readonly Box fill;
         private readonly Box background;
 
-        public Color4 FillColour
+        public Colour4 FillColour
         {
             set => fill.FadeColour(value, 150, Easing.OutQuint);
         }
 
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
             set
             {
diff --git a/osu.Game/Graphics/UserInterface/RangeSlider.cs b/osu.Game/Graphics/UserInterface/RangeSlider.cs
index acf10ce82769..cca7e0171710 100644
--- a/osu.Game/Graphics/UserInterface/RangeSlider.cs
+++ b/osu.Game/Graphics/UserInterface/RangeSlider.cs
@@ -10,8 +10,6 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -138,10 +136,10 @@ protected override void LoadComplete()
                 LeftBox.Height = 6; // hide any colour bleeding from overlap
 
                 AccentColour = BackgroundColour;
-                BackgroundColour = Color4.Transparent;
+                BackgroundColour = Colour4.Transparent;
             }
 
-            public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) =>
+            public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) =>
                 base.ReceivePositionalInputAt(screenSpacePos)
                 && screenSpacePos.X <= Nub.ScreenSpaceDrawQuad.TopRight.X;
         }
@@ -155,7 +153,7 @@ protected override void LoadComplete()
                 RightBox.Height = 6; // just to match the left bar height really
             }
 
-            public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) =>
+            public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) =>
                 base.ReceivePositionalInputAt(screenSpacePos)
                 && screenSpacePos.X >= Nub.ScreenSpaceDrawQuad.TopLeft.X;
         }
@@ -193,7 +191,7 @@ protected override void LoadComplete()
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Y = -0.5f,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Font = OsuFont.Torus.With(size: 10),
                 });
 
diff --git a/osu.Game/Graphics/UserInterface/RoundedSliderBar.cs b/osu.Game/Graphics/UserInterface/RoundedSliderBar.cs
index 989c5f9ef277..5ab1b46ccb40 100644
--- a/osu.Game/Graphics/UserInterface/RoundedSliderBar.cs
+++ b/osu.Game/Graphics/UserInterface/RoundedSliderBar.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Numerics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,8 +11,6 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
-using osuTK.Graphics;
-using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -29,9 +26,9 @@ public partial class RoundedSliderBar<T> : OsuSliderBar<T>
 
         private readonly Container mainContent;
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
@@ -43,7 +40,7 @@ public Color4 AccentColour
 
         private Colour4 backgroundColour;
 
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
             get => backgroundColour;
             set
diff --git a/osu.Game/Graphics/UserInterface/SearchTextBox.cs b/osu.Game/Graphics/UserInterface/SearchTextBox.cs
index 17d714d029cc..43990a2928e9 100644
--- a/osu.Game/Graphics/UserInterface/SearchTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/SearchTextBox.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Input;
 using osu.Framework.Input.Events;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Input;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/SectionHeader.cs b/osu.Game/Graphics/UserInterface/SectionHeader.cs
index eefdef42ceb8..e5536d97bce0 100644
--- a/osu.Game/Graphics/UserInterface/SectionHeader.cs
+++ b/osu.Game/Graphics/UserInterface/SectionHeader.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/SegmentedGraph.cs b/osu.Game/Graphics/UserInterface/SegmentedGraph.cs
index 22292eb85bca..f33b2416036c 100644
--- a/osu.Game/Graphics/UserInterface/SegmentedGraph.cs
+++ b/osu.Game/Graphics/UserInterface/SegmentedGraph.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Rendering;
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ShearedNub.cs b/osu.Game/Graphics/UserInterface/ShearedNub.cs
index f85e412140cf..8d2b846a7d17 100644
--- a/osu.Game/Graphics/UserInterface/ShearedNub.cs
+++ b/osu.Game/Graphics/UserInterface/ShearedNub.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,8 +11,7 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -109,9 +107,9 @@ public bool Glowing
             }
         }
 
-        private Color4 shadowColour = Color4.Black.Opacity(0f);
+        private Colour4 shadowColour = Colour4.Black.Opacity(0f);
 
-        public Color4 ShadowColour
+        public Colour4 ShadowColour
         {
             get => shadowColour;
             set
@@ -136,9 +134,9 @@ public Bindable<bool> Current
             }
         } = new Bindable<bool>();
 
-        private Color4 accentColour;
+        private Colour4 accentColour;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => accentColour;
             set
@@ -148,9 +146,9 @@ public Color4 AccentColour
             }
         }
 
-        private Color4 glowingAccentColour;
+        private Colour4 glowingAccentColour;
 
-        public Color4 GlowingAccentColour
+        public Colour4 GlowingAccentColour
         {
             get => glowingAccentColour;
             set
@@ -160,9 +158,9 @@ public Color4 GlowingAccentColour
             }
         }
 
-        private Color4 glowColour;
+        private Colour4 glowColour;
 
-        public Color4 GlowColour
+        public Colour4 GlowColour
         {
             get => glowColour;
             set
@@ -198,7 +196,7 @@ private void updateDisplay()
                     .Then()
                     .FadeColour(GlowingAccentColour, 800, Easing.OutQuint);
 
-                main.FadeEdgeEffectTo(Color4.White.Opacity(0.1f), 40, Easing.OutQuint)
+                main.FadeEdgeEffectTo(Colour4.White.Opacity(0.1f), 40, Easing.OutQuint)
                     .Then()
                     .FadeEdgeEffectTo(GlowColour.Opacity(0.1f), 800, Easing.OutQuint);
             }
diff --git a/osu.Game/Graphics/UserInterface/ShearedOverlayHeader.cs b/osu.Game/Graphics/UserInterface/ShearedOverlayHeader.cs
index 99eb439f756e..5daf08af9924 100644
--- a/osu.Game/Graphics/UserInterface/ShearedOverlayHeader.cs
+++ b/osu.Game/Graphics/UserInterface/ShearedOverlayHeader.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ShearedRangeSlider.cs b/osu.Game/Graphics/UserInterface/ShearedRangeSlider.cs
index 417474cba365..fcc79082b3ef 100644
--- a/osu.Game/Graphics/UserInterface/ShearedRangeSlider.cs
+++ b/osu.Game/Graphics/UserInterface/ShearedRangeSlider.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -13,8 +12,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -233,7 +231,7 @@ protected override void LoadComplete()
                 if (!isUpper)
                 {
                     AccentColour = BackgroundColour;
-                    BackgroundColour = Color4.Transparent;
+                    BackgroundColour = Colour4.Transparent;
                 }
 
                 Current.BindValueChanged(current => UpdateDisplay(current.NewValue), true);
diff --git a/osu.Game/Graphics/UserInterface/ShearedSearchTextBox.cs b/osu.Game/Graphics/UserInterface/ShearedSearchTextBox.cs
index b1b93dcbca09..f958750d8cab 100644
--- a/osu.Game/Graphics/UserInterface/ShearedSearchTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/ShearedSearchTextBox.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/ShearedSliderBar.cs b/osu.Game/Graphics/UserInterface/ShearedSliderBar.cs
index e7dba4d2c8d0..69063266c8ce 100644
--- a/osu.Game/Graphics/UserInterface/ShearedSliderBar.cs
+++ b/osu.Game/Graphics/UserInterface/ShearedSliderBar.cs
@@ -4,15 +4,12 @@
 using System;
 using System.Numerics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
-using osuTK.Graphics;
-using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -30,14 +27,12 @@ public partial class ShearedSliderBar<T> : OsuSliderBar<T>
 
         protected virtual bool FocusIndicator => true;
 
-        private Color4 accentColour;
-
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
-            get => accentColour;
+            get;
             set
             {
-                accentColour = value;
+                field = value;
 
                 // We want to slightly darken the colour for the box because the sheared slider has the boxes at the same height as the nub,
                 // making the nub invisible when not hovered.
@@ -45,19 +40,17 @@ public Color4 AccentColour
             }
         }
 
-        private Colour4 backgroundColour;
-
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
-            get => backgroundColour;
+            get;
             set
             {
-                backgroundColour = value;
+                field = value;
                 RightBox.Colour = value;
             }
         }
 
-        public Color4 NubShadowColour
+        public Colour4 NubShadowColour
         {
             get => Nub.ShadowColour;
             set => Nub.ShadowColour = value;
diff --git a/osu.Game/Graphics/UserInterface/ShowMoreButton.cs b/osu.Game/Graphics/UserInterface/ShowMoreButton.cs
index 9b6fe7eaf647..39d9ea331714 100644
--- a/osu.Game/Graphics/UserInterface/ShowMoreButton.cs
+++ b/osu.Game/Graphics/UserInterface/ShowMoreButton.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/StarCounter.cs b/osu.Game/Graphics/UserInterface/StarCounter.cs
index 7b344ed9e376..078931ee12f3 100644
--- a/osu.Game/Graphics/UserInterface/StarCounter.cs
+++ b/osu.Game/Graphics/UserInterface/StarCounter.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
diff --git a/osu.Game/Graphics/UserInterface/TwoLayerButton.cs b/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
index e87e446ae3f7..fa91399c3e43 100644
--- a/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
+++ b/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -14,8 +13,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -39,11 +37,11 @@ public partial class TwoLayerButton : OsuClickableContainer
         public static readonly Vector2 SIZE_RETRACTED = new Vector2(100, 50);
         private readonly SpriteText text;
 
-        public Color4 HoverColour;
+        public Colour4 HoverColour;
         private readonly Container c1;
         private readonly Container c2;
 
-        public Color4 BackgroundColour
+        public Colour4 BackgroundColour
         {
             set
             {
@@ -94,7 +92,7 @@ public TwoLayerButton(HoverSampleSet sampleSet = HoverSampleSet.Default)
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(0.2f),
+                                Colour = Colour4.Black.Opacity(0.2f),
                                 Offset = new Vector2(2, 0),
                                 Radius = 2,
                             },
@@ -131,7 +129,7 @@ public TwoLayerButton(HoverSampleSet sampleSet = HoverSampleSet.Default)
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(0.2f),
+                                Colour = Colour4.Black.Opacity(0.2f),
                                 Offset = new Vector2(2, 0),
                                 Radius = 2,
                             },
@@ -195,7 +193,7 @@ protected override bool OnClick(ClickEvent e)
             var flash = new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.White.Opacity(0.5f),
+                Colour = Colour4.White.Opacity(0.5f),
             };
             Add(flash);
 
diff --git a/osu.Game/Graphics/UserInterfaceV2/ColourDisplay.cs b/osu.Game/Graphics/UserInterfaceV2/ColourDisplay.cs
index a154449dd81d..42b4b0e179f1 100644
--- a/osu.Game/Graphics/UserInterfaceV2/ColourDisplay.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/ColourDisplay.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/ColourPalette.cs b/osu.Game/Graphics/UserInterfaceV2/ColourPalette.cs
index ad38d44d5f14..f305b21c37cb 100644
--- a/osu.Game/Graphics/UserInterfaceV2/ColourPalette.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/ColourPalette.cs
@@ -16,7 +16,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/FileSelection/HiddenFilesToggleCheckbox.cs b/osu.Game/Graphics/UserInterfaceV2/FileSelection/HiddenFilesToggleCheckbox.cs
index 79374515e5a4..99b971ea5310 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FileSelection/HiddenFilesToggleCheckbox.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FileSelection/HiddenFilesToggleCheckbox.cs
@@ -6,8 +6,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2.FileSelection
 {
@@ -35,8 +34,8 @@ private void load(OverlayColourProvider? overlayColourProvider, OsuColour colour
                 return;
 
             Nub.AccentColour = colours.GreySeaFoamLighter;
-            Nub.GlowingAccentColour = Color4.White;
-            Nub.GlowColour = Color4.White;
+            Nub.GlowingAccentColour = Colour4.White;
+            Nub.GlowColour = Colour4.White;
         }
     }
 }
diff --git a/osu.Game/Graphics/UserInterfaceV2/FileSelection/OsuDirectorySelectorBreadcrumbDisplay.cs b/osu.Game/Graphics/UserInterfaceV2/FileSelection/OsuDirectorySelectorBreadcrumbDisplay.cs
index 7d1274315d7b..b904e3db81a9 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FileSelection/OsuDirectorySelectorBreadcrumbDisplay.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FileSelection/OsuDirectorySelectorBreadcrumbDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2.FileSelection
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormButton.cs b/osu.Game/Graphics/UserInterfaceV2/FormButton.cs
index c4d47b073deb..bf21593d69cc 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormButton.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormButton.cs
@@ -5,7 +5,6 @@
 using System.Diagnostics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -41,7 +39,7 @@ public partial class FormButton : CompositeDrawable
         /// <summary>
         /// Sets a custom background colour for the button.
         /// </summary>
-        public Color4? BackgroundColour
+        public Colour4? BackgroundColour
         {
             get;
             init
@@ -183,9 +181,9 @@ public partial class Button : OsuButton
 
             protected override float HoverLayerFinalAlpha => 0;
 
-            private Color4? triangleGradientSecondColour;
+            private Colour4? triangleGradientSecondColour;
 
-            public override Color4 BackgroundColour
+            public override Colour4 BackgroundColour
             {
                 get => base.BackgroundColour;
                 set
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs b/osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs
index 0eb59415c047..866ba99fe90e 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormColourPalette.cs
@@ -19,8 +19,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -123,7 +122,7 @@ protected override void OnHoverLost(HoverLostEvent e)
 
         private void addNewColour()
         {
-            Color4 startingColour = Colours.Count > 0
+            Colour4 startingColour = Colours.Count > 0
                 ? Colours.Last()
                 : Colour4.White;
 
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormControlBackground.cs b/osu.Game/Graphics/UserInterfaceV2/FormControlBackground.cs
index 11379f4c37f0..777f5469fc36 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormControlBackground.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormControlBackground.cs
@@ -3,14 +3,12 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -50,7 +48,7 @@ public FormControlBackground()
             {
                 box = new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both,
                 },
                 sounds = new HoverSounds(),
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormDropdown.cs b/osu.Game/Graphics/UserInterfaceV2/FormDropdown.cs
index d09ca2420af9..744bd09c4a58 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormDropdown.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormDropdown.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -98,8 +98,6 @@ private partial class FormDropdownHeader : DropdownHeader
 
             protected override DropdownSearchBar CreateSearchBar() => SearchBar = new FormDropdownSearchBar();
 
-            private LocalisableString labelText;
-
             public LocalisableString Caption
             {
                 get;
@@ -126,13 +124,13 @@ public LocalisableString HintText
 
             protected override LocalisableString Label
             {
-                get => labelText;
+                get;
                 set
                 {
-                    labelText = value;
+                    field = value;
 
                     if (label.IsNotNull())
-                        label.Text = labelText;
+                        label.Text = value;
                 }
             }
 
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormFieldCaption.cs b/osu.Game/Graphics/UserInterfaceV2/FormFieldCaption.cs
index 224bc1210a3a..31b3d791c8af 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormFieldCaption.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormFieldCaption.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormFileSelector.cs b/osu.Game/Graphics/UserInterfaceV2/FormFileSelector.cs
index d4edcd2ff377..c2543d17bdf2 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormFileSelector.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormFileSelector.cs
@@ -22,8 +22,7 @@
 using osu.Game.Database;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -290,7 +289,7 @@ private void load(OverlayColourProvider colourProvider)
                     {
                         new Box
                         {
-                            Colour = Color4.Transparent,
+                            Colour = Colour4.Transparent,
                             RelativeSizeAxes = Axes.Both,
                         },
                     }
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs b/osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs
index 6385cfd7227d..f8e772bdf4ad 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs
@@ -7,7 +7,6 @@
 using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -22,8 +21,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK.Graphics;
-using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -561,8 +558,8 @@ private void updateState()
             {
                 rightBox.Colour = colourProvider.Background5;
 
-                Color4 leftColour = colourProvider.Light4;
-                Color4 nubColour;
+                Colour4 leftColour = colourProvider.Light4;
+                Colour4 nubColour;
 
                 if (IsHovered || HasFocus || IsDragged)
                     nubColour = colourProvider.Highlight1;
diff --git a/osu.Game/Graphics/UserInterfaceV2/FormTextBox.cs b/osu.Game/Graphics/UserInterfaceV2/FormTextBox.cs
index 355e6334ab90..c38bbf2f9f43 100644
--- a/osu.Game/Graphics/UserInterfaceV2/FormTextBox.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/FormTextBox.cs
@@ -5,7 +5,6 @@
 using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -19,7 +18,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/LabelledDrawable.cs b/osu.Game/Graphics/UserInterfaceV2/LabelledDrawable.cs
index 30669ef3cf55..f719bbc3cd04 100644
--- a/osu.Game/Graphics/UserInterfaceV2/LabelledDrawable.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/LabelledDrawable.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/OsuHSVColourPicker.cs b/osu.Game/Graphics/UserInterfaceV2/OsuHSVColourPicker.cs
index 63bad283a885..768209763a18 100644
--- a/osu.Game/Graphics/UserInterfaceV2/OsuHSVColourPicker.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/OsuHSVColourPicker.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/OsuPopover.cs b/osu.Game/Graphics/UserInterfaceV2/OsuPopover.cs
index 7abaca409228..aad41ebaace9 100644
--- a/osu.Game/Graphics/UserInterfaceV2/OsuPopover.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/OsuPopover.cs
@@ -13,7 +13,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/ReportPopover.cs b/osu.Game/Graphics/UserInterfaceV2/ReportPopover.cs
index a7b6aad18852..baf57d3d98ec 100644
--- a/osu.Game/Graphics/UserInterfaceV2/ReportPopover.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/ReportPopover.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
diff --git a/osu.Game/Graphics/UserInterfaceV2/RoundedButton.cs b/osu.Game/Graphics/UserInterfaceV2/RoundedButton.cs
index faabb8029903..75ab37756b6c 100644
--- a/osu.Game/Graphics/UserInterfaceV2/RoundedButton.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/RoundedButton.cs
@@ -4,7 +4,6 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -14,7 +13,6 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -24,9 +22,9 @@ public partial class RoundedButton : OsuButton, IFilterable, IHasTooltip
 
         protected override float HoverLayerFinalAlpha => 0;
 
-        private Color4? triangleGradientSecondColour;
+        private Colour4? triangleGradientSecondColour;
 
-        public override Color4 BackgroundColour
+        public override Colour4 BackgroundColour
         {
             get => base.BackgroundColour;
             set
diff --git a/osu.Game/Graphics/UserInterfaceV2/ShearedDropdown.cs b/osu.Game/Graphics/UserInterfaceV2/ShearedDropdown.cs
index af69aefaafee..1856ebef7446 100644
--- a/osu.Game/Graphics/UserInterfaceV2/ShearedDropdown.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/ShearedDropdown.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -81,14 +79,12 @@ public ShearedMenuItem(MenuItem item)
 
         public partial class ShearedDropdownHeader : DropdownHeader
         {
-            private LocalisableString label;
-
             protected override LocalisableString Label
             {
-                get => label;
+                get;
                 set
                 {
-                    label = value;
+                    field = value;
                     valueText.Text = value;
                 }
             }
@@ -236,7 +232,7 @@ private void updateColour()
                 var hoveredColour = colourProvider.Light4;
                 var unhoveredColour = colourProvider.Background5;
 
-                Colour = Enabled.Value ? Color4.White : OsuColour.Gray(0.6f);
+                Colour = Enabled.Value ? Colour4.White : OsuColour.Gray(0.6f);
 
                 if (SearchBar.State.Value == Visibility.Visible)
                 {
@@ -245,7 +241,7 @@ private void updateColour()
                 }
                 else
                 {
-                    chevron.Colour = Color4.White;
+                    chevron.Colour = Colour4.White;
                     Background.Colour = hovered ? hoveredColour : unhoveredColour;
                 }
             }
@@ -276,8 +272,8 @@ private partial class DropdownSearchTextBox : OsuTextBox
                     private void load(OverlayColourProvider? colourProvider)
                     {
                         TextContainer.Shear = -OsuGame.SHEAR;
-                        BackgroundUnfocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
-                        BackgroundFocused = colourProvider?.Background5 ?? new Color4(10, 10, 10, 255);
+                        BackgroundUnfocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
+                        BackgroundFocused = colourProvider?.Background5 ?? new Colour4(10, 10, 10, 255);
                     }
 
                     protected override void OnFocus(FocusEvent e)
diff --git a/osu.Game/Graphics/UserInterfaceV2/SwitchButton.cs b/osu.Game/Graphics/UserInterfaceV2/SwitchButton.cs
index 802b91451a1e..3f86561df8f4 100644
--- a/osu.Game/Graphics/UserInterfaceV2/SwitchButton.cs
+++ b/osu.Game/Graphics/UserInterfaceV2/SwitchButton.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -12,8 +11,7 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
@@ -41,7 +39,7 @@ public SwitchButton()
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 RelativeSizeAxes = Axes.Both,
-                BorderColour = Color4.White,
+                BorderColour = Colour4.White,
                 BorderThickness = 3.2f,
                 Masking = true,
                 CornerExponent = 2.5f,
@@ -101,8 +99,8 @@ public void PlaySample(bool value)
 
         private void updateState()
         {
-            Color4 fillColour = colourProvider.Background5.Opacity(0);
-            Color4 borderColour = colourProvider.Light4;
+            Colour4 fillColour = colourProvider.Background5.Opacity(0);
+            Colour4 borderColour = colourProvider.Light4;
 
             if (IsHovered)
                 borderColour = colourProvider.Highlight1;
diff --git a/osu.Game/IO/Stores/OptimisedMediaResourceStore.cs b/osu.Game/IO/Stores/OptimisedMediaResourceStore.cs
index 55d0054f825e..9f1ed2e50f0c 100644
--- a/osu.Game/IO/Stores/OptimisedMediaResourceStore.cs
+++ b/osu.Game/IO/Stores/OptimisedMediaResourceStore.cs
@@ -3,6 +3,8 @@
 
 using System.Collections.Generic;
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using osu.Framework.IO.Stores;
 
 namespace osu.Game.IO.Stores
@@ -15,6 +17,8 @@ namespace osu.Game.IO.Stores
     /// Image probing order matches <c>osu.Framework.IO.Stores.OptimizedResourceStore.ImageFallbackRules</c>:
     /// <c>.avif</c> is tried before <c>.webp</c> (better compression at equal quality), then the original.
     /// Audio and video fallback orders are likewise kept in sync with the framework.
+    /// All candidates (alternatives + original) are always probed in order so that callers observing
+    /// store requests see the full fallback chain regardless of which format is available.
     /// </remarks>
     public class OptimisedMediaResourceStore : ResourceStore<byte[]>
     {
@@ -30,12 +34,45 @@ public class OptimisedMediaResourceStore : ResourceStore<byte[]>
             { ".mp4", new[] { ".webm" } },
         };
 
+        private readonly IResourceStore<byte[]> underlyingStore;
+
         public static IResourceStore<byte[]> Wrap(IResourceStore<byte[]> underlyingStore)
             => underlyingStore is OptimisedMediaResourceStore ? underlyingStore : new OptimisedMediaResourceStore(underlyingStore);
 
         public OptimisedMediaResourceStore(IResourceStore<byte[]> underlyingStore)
             : base(underlyingStore)
         {
+            this.underlyingStore = underlyingStore;
+        }
+
+        // NRT not enabled on framework side classes (IResourceStore / ResourceStore), welp.
+        public override byte[] Get(string name)
+        {
+            byte[]? result = null;
+
+            foreach (string f in GetFilenames(name))
+            {
+                byte[]? candidate = underlyingStore.Get(f);
+                if (candidate != null && result == null)
+                    result = candidate;
+            }
+
+            return result!;
+        }
+
+        // NRT not enabled on framework side classes (IResourceStore / ResourceStore), welp.
+        public override async Task<byte[]> GetAsync(string name, CancellationToken cancellationToken = default)
+        {
+            byte[]? result = null;
+
+            foreach (string f in GetFilenames(name))
+            {
+                byte[]? candidate = await underlyingStore.GetAsync(f, cancellationToken).ConfigureAwait(false);
+                if (candidate != null && result == null)
+                    result = candidate;
+            }
+
+            return result!;
         }
 
         protected override IEnumerable<string> GetFilenames(string name)
diff --git a/osu.Game/IPC/WebSocketChannel.cs b/osu.Game/IPC/WebSocketChannel.cs
index a56d12653513..1b6c1cb76a92 100644
--- a/osu.Game/IPC/WebSocketChannel.cs
+++ b/osu.Game/IPC/WebSocketChannel.cs
@@ -104,7 +104,7 @@ private async Task readWriteLoop()
                     return;
                 }
 
-                if (currentBufferPosition > max_message_size)
+                if (currentBufferPosition >= max_message_size && !result.EndOfMessage)
                 {
                     await webSocket.CloseOutputAsync(WebSocketCloseStatus.MessageTooBig, $@"Exceeded maximum message size of {max_message_size} bytes.", token).ConfigureAwait(false);
                     ClosedPrematurely?.Invoke();
diff --git a/osu.Game/Input/Handlers/ReplayInputHandler.cs b/osu.Game/Input/Handlers/ReplayInputHandler.cs
index c5e836784f74..62c730ada500 100644
--- a/osu.Game/Input/Handlers/ReplayInputHandler.cs
+++ b/osu.Game/Input/Handlers/ReplayInputHandler.cs
@@ -13,7 +13,7 @@
 using osu.Framework.Platform;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Input.Handlers
 {
diff --git a/osu.Game/Input/OsuUserInputManager.cs b/osu.Game/Input/OsuUserInputManager.cs
index 2138a8b247f1..95f150b07805 100644
--- a/osu.Game/Input/OsuUserInputManager.cs
+++ b/osu.Game/Input/OsuUserInputManager.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Bindables;
 using osu.Framework.Input;
 using osu.Game.Screens.Play;
-using osuTK.Input;
 
 namespace osu.Game.Input
 {
diff --git a/osu.Game/Input/TouchInputInterceptor.cs b/osu.Game/Input/TouchInputInterceptor.cs
index 368d8469ae08..bc10275d563d 100644
--- a/osu.Game/Input/TouchInputInterceptor.cs
+++ b/osu.Game/Input/TouchInputInterceptor.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Input.StateChanges;
 using osu.Framework.Logging;
 using osu.Game.Configuration;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Input
 {
@@ -21,7 +20,7 @@ namespace osu.Game.Input
     /// </summary>
     public partial class TouchInputInterceptor : Component
     {
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => true;
 
         private readonly BindableBool touchInputActive = new BindableBool();
 
diff --git a/osu.Game/Online/API/Requests/Responses/APIUpdateStream.cs b/osu.Game/Online/API/Requests/Responses/APIUpdateStream.cs
index 7586f56a0e9e..8a6c7ffbb9ea 100644
--- a/osu.Game/Online/API/Requests/Responses/APIUpdateStream.cs
+++ b/osu.Game/Online/API/Requests/Responses/APIUpdateStream.cs
@@ -7,7 +7,7 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
 using osu.Framework.Graphics.Colour;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Online.API.Requests.Responses
 {
@@ -33,17 +33,17 @@ public class APIUpdateStream : IEquatable<APIUpdateStream>
 
         public bool Equals(APIUpdateStream other) => Id == other?.Id;
 
-        internal static readonly Dictionary<string, Color4> KNOWN_STREAMS = new Dictionary<string, Color4>
+        internal static readonly Dictionary<string, Colour4> KNOWN_STREAMS = new Dictionary<string, Colour4>
         {
-            ["stable40"] = new Color4(102, 204, 255, 255),
-            ["stable"] = new Color4(34, 153, 187, 255),
-            ["beta40"] = new Color4(255, 221, 85, 255),
-            ["cuttingedge"] = new Color4(238, 170, 0, 255),
-            ["lazer"] = new Color4(237, 18, 33, 255),
-            ["tachyon"] = new Color4(206, 0, 255, 255),
-            ["web"] = new Color4(136, 102, 238, 255)
+            ["stable40"] = new Colour4(102, 204, 255, 255),
+            ["stable"] = new Colour4(34, 153, 187, 255),
+            ["beta40"] = new Colour4(255, 221, 85, 255),
+            ["cuttingedge"] = new Colour4(238, 170, 0, 255),
+            ["lazer"] = new Colour4(237, 18, 33, 255),
+            ["tachyon"] = new Colour4(206, 0, 255, 255),
+            ["web"] = new Colour4(136, 102, 238, 255)
         };
 
-        public ColourInfo Colour => KNOWN_STREAMS.TryGetValue(Name, out var colour) ? colour : new Color4(0, 0, 0, 255);
+        public ColourInfo Colour => KNOWN_STREAMS.TryGetValue(Name, out var colour) ? colour : new Colour4(0, 0, 0, 255);
     }
 }
diff --git a/osu.Game/Online/Chat/DrawableLinkCompiler.cs b/osu.Game/Online/Chat/DrawableLinkCompiler.cs
index e4baeb4838cb..23b1c1d9c5d7 100644
--- a/osu.Game/Online/Chat/DrawableLinkCompiler.cs
+++ b/osu.Game/Online/Chat/DrawableLinkCompiler.cs
@@ -13,7 +13,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
 
 namespace osu.Game.Online.Chat
 {
@@ -30,7 +29,7 @@ public partial class DrawableLinkCompiler : OsuHoverContainer
         [Resolved]
         private OverlayColourProvider? overlayColourProvider { get; set; }
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos)
         {
             foreach (var part in Parts)
             {
@@ -71,7 +70,7 @@ public LinkHoverSounds(HoverSampleSet sampleSet, SlimReadOnlyListWrapper<Drawabl
                 this.parts = parts;
             }
 
-            public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
+            public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos)
             {
                 foreach (var part in parts)
                 {
diff --git a/osu.Game/Online/Chat/StandAloneChatDisplay.cs b/osu.Game/Online/Chat/StandAloneChatDisplay.cs
index 667ef072a920..c3b79f741957 100644
--- a/osu.Game/Online/Chat/StandAloneChatDisplay.cs
+++ b/osu.Game/Online/Chat/StandAloneChatDisplay.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Chat;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Online.Chat
 {
@@ -55,7 +54,7 @@ public StandAloneChatDisplay(bool postingTextBox = false)
             {
                 Background = new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.8f,
                     RelativeSizeAxes = Axes.Both
                 },
@@ -153,8 +152,8 @@ protected override void LoadComplete()
             {
                 base.LoadComplete();
 
-                BackgroundUnfocused = new Color4(10, 10, 10, 10);
-                BackgroundFocused = new Color4(10, 10, 10, 255);
+                BackgroundUnfocused = new Colour4(10, 10, 10, 10);
+                BackgroundFocused = new Colour4(10, 10, 10, 255);
             }
 
             protected override void OnFocus(FocusEvent e)
diff --git a/osu.Game/Online/FriendPresenceNotifier.cs b/osu.Game/Online/FriendPresenceNotifier.cs
index 6a55b4a2a269..91935ff93ee9 100644
--- a/osu.Game/Online/FriendPresenceNotifier.cs
+++ b/osu.Game/Online/FriendPresenceNotifier.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Configuration;
@@ -19,7 +18,6 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Users;
-using osuTK.Graphics;
 
 namespace osu.Game.Online
 {
@@ -305,7 +303,7 @@ public SingleFriendOfflineNotification(APIUser user)
             private void load()
             {
                 Icon = FontAwesome.Solid.UserSlash;
-                Avatar.Colour = Color4.White.Opacity(0.25f);
+                Avatar.Colour = Colour4.White.Opacity(0.25f);
             }
 
             public override string PopInSampleName => "UI/notification-friend-offline";
diff --git a/osu.Game/Online/Leaderboards/DrawableRank.cs b/osu.Game/Online/Leaderboards/DrawableRank.cs
index efcc14a5c184..f7f1981edd90 100644
--- a/osu.Game/Online/Leaderboards/DrawableRank.cs
+++ b/osu.Game/Online/Leaderboards/DrawableRank.cs
@@ -10,8 +10,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Online.Leaderboards
 {
@@ -55,7 +54,7 @@ public DrawableRank(ScoreRank rank)
                             Colour = GetRankLetterColour(rank),
                             Font = OsuFont.Numeric.With(size: 25),
                             Text = GetRankLetter(rank),
-                            ShadowColour = Color4.Black.Opacity(0.3f),
+                            ShadowColour = Colour4.Black.Opacity(0.3f),
                             ShadowOffset = new Vector2(0, 0.08f),
                             Shadow = true,
                         },
@@ -92,7 +91,7 @@ public static ColourInfo GetRankLetterColour(ScoreRank rank)
             {
                 case ScoreRank.XH:
                 case ScoreRank.SH:
-                    return ColourInfo.GradientVertical(Color4.White, Color4Extensions.FromHex("afdff0"));
+                    return ColourInfo.GradientVertical(Colour4.White, Color4Extensions.FromHex("afdff0"));
 
                 case ScoreRank.X:
                 case ScoreRank.S:
diff --git a/osu.Game/Online/Leaderboards/Leaderboard.cs b/osu.Game/Online/Leaderboards/Leaderboard.cs
index 2325eb7820cc..e24a583f2049 100644
--- a/osu.Game/Online/Leaderboards/Leaderboard.cs
+++ b/osu.Game/Online/Leaderboards/Leaderboard.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Development;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -20,8 +19,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Online.Placeholders;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Online.Leaderboards
 {
@@ -393,22 +391,22 @@ protected override void UpdateAfterChildren()
                 bool requireBottomFade = bottomY >= fadeBottom;
 
                 if (!requireBottomFade)
-                    c.Colour = Color4.White;
+                    c.Colour = Colour4.White;
                 else if (topY > fadeBottom + LeaderboardScore.HEIGHT || bottomY < fadeTop - LeaderboardScore.HEIGHT)
-                    c.Colour = Color4.Transparent;
+                    c.Colour = Colour4.Transparent;
                 else
                 {
                     if (bottomY - fadeBottom > 0)
                     {
                         c.Colour = ColourInfo.GradientVertical(
-                            Color4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / LeaderboardScore.HEIGHT, 1)),
-                            Color4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / LeaderboardScore.HEIGHT, 1)));
+                            Colour4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / LeaderboardScore.HEIGHT, 1)),
+                            Colour4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / LeaderboardScore.HEIGHT, 1)));
                     }
                     else
                     {
                         c.Colour = ColourInfo.GradientVertical(
-                            Color4.White.Opacity(Math.Min(1 - (fadeTop - topY) / LeaderboardScore.HEIGHT, 1)),
-                            Color4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / LeaderboardScore.HEIGHT, 1)));
+                            Colour4.White.Opacity(Math.Min(1 - (fadeTop - topY) / LeaderboardScore.HEIGHT, 1)),
+                            Colour4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / LeaderboardScore.HEIGHT, 1)));
                     }
                 }
             }
diff --git a/osu.Game/Online/Leaderboards/LeaderboardScore.cs b/osu.Game/Online/Leaderboards/LeaderboardScore.cs
index 5557573c678d..fe09bb2b3794 100644
--- a/osu.Game/Online/Leaderboards/LeaderboardScore.cs
+++ b/osu.Game/Online/Leaderboards/LeaderboardScore.cs
@@ -31,8 +31,7 @@
 using osu.Game.Screens.Select;
 using osu.Game.Users.Drawables;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using CommonStrings = osu.Game.Localisation.CommonStrings;
 using SongSelect = osu.Game.Screens.Select.SongSelect;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
@@ -132,7 +131,7 @@ private void load(IAPIProvider api, OsuColour colour)
                                 background = new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = (highlightFriend && isUserFriend) ? colour.Yellow : (user.OnlineID == api.LocalUser.Value.Id && isOnlineScope ? colour.Green : Color4.Black),
+                                    Colour = (highlightFriend && isUserFriend) ? colour.Yellow : (user.OnlineID == api.LocalUser.Value.Id && isOnlineScope ? colour.Green : Colour4.Black),
                                     Alpha = background_alpha,
                                 },
                             },
@@ -153,7 +152,7 @@ private void load(IAPIProvider api, OsuColour colour)
                                         {
                                             Type = EdgeEffectType.Shadow,
                                             Radius = 1,
-                                            Colour = Color4.Black.Opacity(0.2f),
+                                            Colour = Colour4.Black.Opacity(0.2f),
                                         },
                                     })
                                 {
@@ -228,7 +227,7 @@ private void load(IAPIProvider api, OsuColour colour)
                                     {
                                         ScoreText = new GlowingSpriteText
                                         {
-                                            TextColour = Color4.White,
+                                            TextColour = Colour4.White,
                                             GlowColour = Color4Extensions.FromHex(@"83ccfa"),
                                             Current = scoreManager.GetBindableTotalScoreString(Score),
                                             Font = OsuFont.Numeric.With(size: 23),
diff --git a/osu.Game/Online/Leaderboards/LeaderboardScoreTooltip.cs b/osu.Game/Online/Leaderboards/LeaderboardScoreTooltip.cs
index 34d5cab286b5..4fe1f861cdbc 100644
--- a/osu.Game/Online/Leaderboards/LeaderboardScoreTooltip.cs
+++ b/osu.Game/Online/Leaderboards/LeaderboardScoreTooltip.cs
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Online.Leaderboards
 {
diff --git a/osu.Game/Online/Leaderboards/UserTopScoreContainer.cs b/osu.Game/Online/Leaderboards/UserTopScoreContainer.cs
index af59da2fb8e8..59e5a1502e0e 100644
--- a/osu.Game/Online/Leaderboards/UserTopScoreContainer.cs
+++ b/osu.Game/Online/Leaderboards/UserTopScoreContainer.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Online.Leaderboards
 {
diff --git a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayDamageInfo.cs b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayDamageInfo.cs
index 66ae9fc9a658..bc5ef7c50b5b 100644
--- a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayDamageInfo.cs
+++ b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayDamageInfo.cs
@@ -12,45 +12,68 @@ public class RankedPlayDamageInfo : IEquatable<RankedPlayDamageInfo>
     {
         /// <summary>
         /// Total amount of damage dealt.
+        /// Calculated as <see cref="DirectDamage"/> * <see cref="Multiplier"/> + <see cref="BonusDamage"/>.
         /// </summary>
+        /// <remarks>
+        /// Not required since adding additional properties (<see cref="DirectDamage"/> / <see cref="BonusDamage"/> / <see cref="Multiplier"/>).
+        /// Could potentially be replaced with a property doing the above calculation.
+        /// </remarks>
         [Key(0)]
-        public required int Damage { get; init; }
+        public int Damage { get; set; }
 
         /// <summary>
         /// Damage dealt before multipliers are applied.
+        /// Calculated as <see cref="DirectDamage"/> + <see cref="BonusDamage"/>.
         /// </summary>
+        /// <remarks>
+        /// Not required since adding additional properties (<see cref="DirectDamage"/> / <see cref="BonusDamage"/> / <see cref="Multiplier"/>).
+        /// Can potentially be removed in the future.
+        /// </remarks>
         [Key(1)]
-        public required int RawDamage { get; init; }
+        public int RawDamage { get; set; }
 
         /// <summary>
         /// Life before damage was applied.
         /// </summary>
         [Key(2)]
-        public required int OldLife { get; init; }
+        public int OldLife { get; set; }
 
         /// <summary>
         /// Life after damage was applied.
         /// </summary>
         [Key(3)]
-        public required int NewLife { get; init; }
+        public int NewLife { get; set; }
 
-        public bool Equals(RankedPlayDamageInfo? other)
-        {
-            if (other is null) return false;
-            if (ReferenceEquals(this, other)) return true;
+        /// <summary>
+        /// Direct damage dealt based on score difference.
+        /// </summary>
+        [Key(4)]
+        public int DirectDamage { get; set; }
 
-            return Damage == other.Damage && RawDamage == other.RawDamage && OldLife == other.OldLife && NewLife == other.NewLife;
-        }
+        /// <summary>
+        /// The multiplier of <see cref="DirectDamage"/>.
+        /// </summary>
+        [Key(5)]
+        public double Multiplier { get; set; } = 1;
+
+        /// <summary>
+        /// Damage dealt for winning a round.
+        /// </summary>
+        [Key(6)]
+        public int BonusDamage { get; set; }
 
-        public override bool Equals(object? obj)
+        public bool Equals(RankedPlayDamageInfo? other)
         {
-            if (obj is null) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
+            if (other == null)
+                return false;
 
-            return Equals((RankedPlayDamageInfo)obj);
+            return Damage == other.Damage
+                   && RawDamage == other.RawDamage
+                   && OldLife == other.OldLife
+                   && NewLife == other.NewLife
+                   && DirectDamage == other.DirectDamage
+                   && Multiplier == other.Multiplier
+                   && BonusDamage == other.BonusDamage;
         }
-
-        public override int GetHashCode() => HashCode.Combine(Damage, RawDamage, OldLife, NewLife);
     }
 }
diff --git a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayRoomState.cs b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayRoomState.cs
index e303bb0aa504..8b2e5b336fdd 100644
--- a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayRoomState.cs
+++ b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayRoomState.cs
@@ -27,7 +27,7 @@ public class RankedPlayRoomState : MatchRoomState
         /// A multiplier applied to life point damage.
         /// </summary>
         [Key(2)]
-        public double DamageMultiplier { get; set; } = 1;
+        public double DamageMultiplier { get; set; } = 0.5;
 
         /// <summary>
         /// A dictionary containing all users in the room.
diff --git a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayUserInfo.cs b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayUserInfo.cs
index 9480dca5f5f3..5e29277267ac 100644
--- a/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayUserInfo.cs
+++ b/osu.Game/Online/Multiplayer/MatchTypes/RankedPlay/RankedPlayUserInfo.cs
@@ -49,5 +49,11 @@ public class RankedPlayUserInfo
         /// </summary>
         [Key(5)]
         public int RoundsWon { get; set; }
+
+        /// <summary>
+        /// This player's individual damage multiplier.
+        /// </summary>
+        [Key(6)]
+        public double DamageMultiplier { get; set; } = 0.5;
     }
 }
diff --git a/osu.Game/Online/RankedPlay/RankedPlayCardState.cs b/osu.Game/Online/RankedPlay/RankedPlayCardState.cs
index 3ed3d36793a4..2f7ece51f1bd 100644
--- a/osu.Game/Online/RankedPlay/RankedPlayCardState.cs
+++ b/osu.Game/Online/RankedPlay/RankedPlayCardState.cs
@@ -3,7 +3,7 @@
 
 using System;
 using MessagePack;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Online.RankedPlay
 {
diff --git a/osu.Game/OsuGame.cs b/osu.Game/OsuGame.cs
index 07cffaee967f..1526bb8754f1 100644
--- a/osu.Game/OsuGame.cs
+++ b/osu.Game/OsuGame.cs
@@ -76,8 +76,7 @@
 using osu.Game.Updater;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using Sentry;
 using IntroScreen = osu.Game.Screens.Menu.IntroScreen;
 using MatchType = osu.Game.Online.Rooms.MatchType;
@@ -268,7 +267,7 @@ public OsuGame(string[] args = null)
         IBindable<OverlayActivation> IOverlayManager.OverlayActivationMode => OverlayActivationMode;
 
         private void updateBlockingOverlayFade() =>
-            ScreenContainer.FadeColour(visibleBlockingOverlays.Any() ? OsuColour.Gray(0.5f) : Color4.White, 500, Easing.OutQuint);
+            ScreenContainer.FadeColour(visibleBlockingOverlays.Any() ? OsuColour.Gray(0.5f) : Colour4.White, 500, Easing.OutQuint);
 
         IDisposable IOverlayManager.RegisterBlockingOverlay(OverlayContainer overlayContainer)
         {
diff --git a/osu.Game/Overlays/AccountCreation/ScreenEntry.cs b/osu.Game/Overlays/AccountCreation/ScreenEntry.cs
index 8cc9d52dc81f..9cc7c637928c 100644
--- a/osu.Game/Overlays/AccountCreation/ScreenEntry.cs
+++ b/osu.Game/Overlays/AccountCreation/ScreenEntry.cs
@@ -21,8 +21,7 @@
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.Settings;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.AccountCreation
 {
@@ -155,7 +154,7 @@ private void updateCharacterCheckTextColour()
             string password = passwordTextBox.Text;
 
             foreach (var d in characterCheckText.Drawables)
-                d.Colour = password.Length == 0 ? Color4.White : Interpolation.ValueAt(password.Length, Color4.OrangeRed, Color4.YellowGreen, 0, 8, Easing.In);
+                d.Colour = password.Length == 0 ? Colour4.White : Interpolation.ValueAt(password.Length, Colour4.OrangeRed, Colour4.YellowGreen, 0, 8, Easing.In);
         }
 
         public override void OnEntering(ScreenTransitionEvent e)
diff --git a/osu.Game/Overlays/AccountCreation/ScreenWarning.cs b/osu.Game/Overlays/AccountCreation/ScreenWarning.cs
index e23acd384dd0..a09c7d129c67 100644
--- a/osu.Game/Overlays/AccountCreation/ScreenWarning.cs
+++ b/osu.Game/Overlays/AccountCreation/ScreenWarning.cs
@@ -14,8 +14,7 @@
 using osu.Game.Online.API;
 using osu.Game.Overlays.Settings;
 using osu.Game.Screens.Menu;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.AccountCreation
 {
@@ -89,7 +88,7 @@ private void load(OsuColour colours, TextureStore textures)
                         {
                             Anchor = Anchor.TopCentre,
                             Origin = Anchor.TopCentre,
-                            Colour = Color4.Red,
+                            Colour = Colour4.Red,
                             Font = OsuFont.GetFont(size: 28, weight: FontWeight.Light),
                             Text = "Warning! 注意！",
                         },
diff --git a/osu.Game/Overlays/AccountCreation/ScreenWelcome.cs b/osu.Game/Overlays/AccountCreation/ScreenWelcome.cs
index c69acbf7b21f..3b55af365d60 100644
--- a/osu.Game/Overlays/AccountCreation/ScreenWelcome.cs
+++ b/osu.Game/Overlays/AccountCreation/ScreenWelcome.cs
@@ -11,7 +11,7 @@
 using osu.Game.Localisation;
 using osu.Game.Overlays.Settings;
 using osu.Game.Screens.Menu;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.AccountCreation
 {
diff --git a/osu.Game/Overlays/AccountCreationOverlay.cs b/osu.Game/Overlays/AccountCreationOverlay.cs
index 55cba3315384..68340a3b065a 100644
--- a/osu.Game/Overlays/AccountCreationOverlay.cs
+++ b/osu.Game/Overlays/AccountCreationOverlay.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API;
 using osu.Game.Overlays.AccountCreation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -51,7 +49,7 @@ private void load(IAPIProvider api)
                     {
                         Type = EdgeEffectType.Shadow,
                         Radius = 5,
-                        Colour = Color4.Black.Opacity(0.2f),
+                        Colour = Colour4.Black.Opacity(0.2f),
                     },
                     Masking = true,
                     CornerRadius = 10,
@@ -60,7 +58,7 @@ private void load(IAPIProvider api)
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             Alpha = 0.6f,
                         },
                         new DelayedLoadWrapper(new AccountCreationBackground(), 0),
@@ -75,7 +73,7 @@ private void load(IAPIProvider api)
                                 new Box
                                 {
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.Black,
+                                    Colour = Colour4.Black,
                                     Alpha = 0.9f,
                                 },
                                 new ScreenStack(welcomeScreen = new ScreenWelcome())
diff --git a/osu.Game/Overlays/AfToggleSection.cs b/osu.Game/Overlays/AfToggleSection.cs
index b9aaa0f64e97..dcd499435e6f 100644
--- a/osu.Game/Overlays/AfToggleSection.cs
+++ b/osu.Game/Overlays/AfToggleSection.cs
@@ -22,8 +22,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -117,7 +116,7 @@ private void explode()
                 foreach (var t in tasks)
                     t.Cancel();
 
-                target.FadeColour(Color4.Black, 2000);
+                target.FadeColour(Colour4.Black, 2000);
                 target.ScaleTo(1)
                       .ScaleTo(10, 4000);
 
@@ -141,7 +140,7 @@ private void explode()
 
                     target.FinishTransforms();
                     target.ScaleTo(1)
-                          .FadeColour(Color4.White, 2000, Easing.OutQuint);
+                          .FadeColour(Colour4.White, 2000, Easing.OutQuint);
 
                     Schedule(() =>
                     {
@@ -220,14 +219,14 @@ private void reset()
                     {
                         if (val.NewValue)
                         {
-                            target.FadeColour(new Color4(
+                            target.FadeColour(new Colour4(
                                 (byte)RNG.Next(200, 255),
                                 (byte)RNG.Next(200, 255),
                                 (byte)RNG.Next(200, 255),
                                 255), 1500, Easing.OutQuint);
                         }
                         else
-                            target.FadeColour(Color4.White, 2000);
+                            target.FadeColour(Colour4.White, 2000);
                     },
                     val =>
                     {
@@ -248,11 +247,11 @@ private void reset()
                     {
                         if (val.NewValue)
                         {
-                            var colours = new[] { new Color4(255, 230, 230, 255), new Color4(230, 255, 230, 255), new Color4(230, 230, 255, 255) };
+                            var colours = new[] { new Colour4(255, 230, 230, 255), new Colour4(230, 255, 230, 255), new Colour4(230, 230, 255, 255) };
                             target.FadeColour(colours[RNG.Next(0, colours.Length)], 300).Loop();
                         }
                         else
-                            target.FadeColour(Color4.White, 3000);
+                            target.FadeColour(Colour4.White, 3000);
                     },
                     val =>
                     {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapListingCardSizeTabControl.cs b/osu.Game/Overlays/BeatmapListing/BeatmapListingCardSizeTabControl.cs
index 63a533c92e33..fd19f5d730b2 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapListingCardSizeTabControl.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapListingCardSizeTabControl.cs
@@ -15,7 +15,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Beatmaps.Drawables.Cards;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapListingFilterControl.cs b/osu.Game/Overlays/BeatmapListing/BeatmapListingFilterControl.cs
index 37a29b1c50a9..9accfefb3471 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapListingFilterControl.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapListingFilterControl.cs
@@ -8,7 +8,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -21,8 +20,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
@@ -94,7 +92,7 @@ public BeatmapListingFilterControl()
                         Masking = true,
                         EdgeEffect = new EdgeEffectParameters
                         {
-                            Colour = Color4.Black.Opacity(0.25f),
+                            Colour = Colour4.Black.Opacity(0.25f),
                             Type = EdgeEffectType.Shadow,
                             Radius = 3,
                             Offset = new Vector2(0f, 1f),
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapListingSearchControl.cs b/osu.Game/Overlays/BeatmapListing/BeatmapListingSearchControl.cs
index 72d7e0c752e7..be5196756232 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapListingSearchControl.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapListingSearchControl.cs
@@ -17,8 +17,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
@@ -179,7 +178,7 @@ private partial class BeatmapSearchTextBox : BasicSearchTextBox
             /// </summary>
             public Action? TextChanged;
 
-            protected override Color4 SelectionColour => Color4.Gray;
+            protected override Colour4 SelectionColour => Colour4.Gray;
 
             public BeatmapSearchTextBox()
             {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapListingSortTabControl.cs b/osu.Game/Overlays/BeatmapListing/BeatmapListingSortTabControl.cs
index 573c2be1ed14..5cec3c517ad0 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapListingSortTabControl.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapListingSortTabControl.cs
@@ -6,8 +6,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
@@ -106,7 +105,7 @@ public partial class BeatmapTabButton : TabButton
         {
             public readonly Bindable<SortDirection> SortDirection = new Bindable<SortDirection>();
 
-            protected override Color4 ContentColour
+            protected override Colour4 ContentColour
             {
                 set
                 {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapSearchFilterRow.cs b/osu.Game/Overlays/BeatmapListing/BeatmapSearchFilterRow.cs
index 101567d5cbb4..312307cf60a9 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapSearchFilterRow.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapSearchFilterRow.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapSearchGeneralFilterRow.cs b/osu.Game/Overlays/BeatmapListing/BeatmapSearchGeneralFilterRow.cs
index 6b6b5c22ceaf..c0b6a909e64b 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapSearchGeneralFilterRow.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapSearchGeneralFilterRow.cs
@@ -19,8 +19,8 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
 using osu.Game.Utils;
-using osuTK.Graphics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
@@ -156,8 +156,8 @@ protected override void LoadComplete()
                 }
             }
 
-            protected override Color4 ColourNormal => colours.Orange1;
-            protected override Color4 ColourActive => colours.Orange2;
+            protected override Colour4 ColourNormal => colours.Orange1;
+            protected override Colour4 ColourActive => colours.Orange2;
 
             protected override bool OnClick(ClickEvent e)
             {
diff --git a/osu.Game/Overlays/BeatmapListing/BeatmapSearchMultipleSelectionFilterRow.cs b/osu.Game/Overlays/BeatmapListing/BeatmapSearchMultipleSelectionFilterRow.cs
index 73af62c3228c..2af36f02500c 100644
--- a/osu.Game/Overlays/BeatmapListing/BeatmapSearchMultipleSelectionFilterRow.cs
+++ b/osu.Game/Overlays/BeatmapListing/BeatmapSearchMultipleSelectionFilterRow.cs
@@ -7,7 +7,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -15,8 +14,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using FontWeight = osu.Game.Graphics.FontWeight;
 
 namespace osu.Game.Overlays.BeatmapListing
@@ -134,7 +132,7 @@ private void load()
                     {
                         background = new Circle
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.Both,
                         },
                         new SpriteIcon
@@ -150,7 +148,7 @@ private void load()
                 });
             }
 
-            protected override Color4 ColourActive => ColourProvider.Light1;
+            protected override Colour4 ColourActive => ColourProvider.Light1;
 
             public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
             {
@@ -161,7 +159,7 @@ public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
 
             protected override void UpdateState()
             {
-                Color4 colour = Active.Value ? ColourActive : ColourNormal;
+                Colour4 colour = Active.Value ? ColourActive : ColourNormal;
 
                 if (!Enabled.Value)
                     colour = colour.Darken(1f);
diff --git a/osu.Game/Overlays/BeatmapListing/FilterTabItem.cs b/osu.Game/Overlays/BeatmapListing/FilterTabItem.cs
index e3577181037a..b9c6d0cdfda3 100644
--- a/osu.Game/Overlays/BeatmapListing/FilterTabItem.cs
+++ b/osu.Game/Overlays/BeatmapListing/FilterTabItem.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
@@ -16,7 +15,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.BeatmapListing
 {
@@ -87,12 +85,12 @@ protected override void OnHoverLost(HoverLostEvent e)
         /// </summary>
         protected virtual LocalisableString LabelFor(T value) => (value as Enum)?.GetLocalisableDescription() ?? value.ToString();
 
-        protected virtual Color4 ColourActive => ColourProvider.Content1;
-        protected virtual Color4 ColourNormal => ColourProvider.Light2;
+        protected virtual Colour4 ColourActive => ColourProvider.Content1;
+        protected virtual Colour4 ColourNormal => ColourProvider.Light2;
 
         protected virtual void UpdateState()
         {
-            Color4 colour = Active.Value ? ColourActive : ColourNormal;
+            Colour4 colour = Active.Value ? ColourActive : ColourNormal;
 
             if (IsHovered)
                 colour = colour.Lighten(0.2f);
diff --git a/osu.Game/Overlays/BeatmapListingOverlay.cs b/osu.Game/Overlays/BeatmapListingOverlay.cs
index c8765d176e34..1e3f362532b8 100644
--- a/osu.Game/Overlays/BeatmapListingOverlay.cs
+++ b/osu.Game/Overlays/BeatmapListingOverlay.cs
@@ -26,8 +26,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapListing;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -123,7 +122,7 @@ public void ShowWithLanguageFilter(SearchLanguage language)
 
         protected override BeatmapListingHeader CreateHeader() => new BeatmapListingHeader();
 
-        protected override Color4 BackgroundColour => ColourProvider.Background6;
+        protected override Colour4 BackgroundColour => ColourProvider.Background6;
 
         private void onTypingStarted()
         {
diff --git a/osu.Game/Overlays/BeatmapSet/AdvancedStats.cs b/osu.Game/Overlays/BeatmapSet/AdvancedStats.cs
index 7bfc3d67ea1a..67807545e737 100644
--- a/osu.Game/Overlays/BeatmapSet/AdvancedStats.cs
+++ b/osu.Game/Overlays/BeatmapSet/AdvancedStats.cs
@@ -12,7 +12,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -30,7 +29,6 @@
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Utils;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -263,7 +261,7 @@ public LocalisableString Title
                     ModBar.Length = (value.adjustedValue ?? 0) / MaxValue;
 
                     if (Precision.AlmostEquals(value.baseValue, value.adjustedValue ?? value.baseValue, 0.05f))
-                        ModBar.AccentColour = valueText.Colour = Color4.White;
+                        ModBar.AccentColour = valueText.Colour = Colour4.White;
                     else if (value.adjustedValue > value.baseValue)
                         ModBar.AccentColour = valueText.Colour = colours.Red;
                     else if (value.adjustedValue < value.baseValue)
@@ -271,7 +269,7 @@ public LocalisableString Title
                 }
             }
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => bar.AccentColour;
                 set => bar.AccentColour = value;
@@ -317,7 +315,7 @@ public StatisticRow(bool forceDecimalPlaces = false)
                                     bar = new Bar
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        BackgroundColour = Color4.White.Opacity(0.5f),
+                                        BackgroundColour = Colour4.White.Opacity(0.5f),
                                     },
                                     ModBar = new Bar
                                     {
diff --git a/osu.Game/Overlays/BeatmapSet/AuthorInfo.cs b/osu.Game/Overlays/BeatmapSet/AuthorInfo.cs
index fcec45fcecff..f077b41279f0 100644
--- a/osu.Game/Overlays/BeatmapSet/AuthorInfo.cs
+++ b/osu.Game/Overlays/BeatmapSet/AuthorInfo.cs
@@ -5,7 +5,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Overlays.BeatmapSet
@@ -59,7 +57,7 @@ private void load()
                     },
                     EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Type = EdgeEffectType.Shadow,
                         Radius = 4,
                         Offset = new Vector2(0f, 1f),
diff --git a/osu.Game/Overlays/BeatmapSet/BasicStats.cs b/osu.Game/Overlays/BeatmapSet/BasicStats.cs
index 103aa34ec446..0f367f467395 100644
--- a/osu.Game/Overlays/BeatmapSet/BasicStats.cs
+++ b/osu.Game/Overlays/BeatmapSet/BasicStats.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapAvailability.cs b/osu.Game/Overlays/BeatmapSet/BeatmapAvailability.cs
index e988f1e1593a..5379dedf13a5 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapAvailability.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapAvailability.cs
@@ -3,7 +3,6 @@
 
 #nullable disable
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -11,7 +10,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -33,7 +31,7 @@ public BeatmapAvailability()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black.Opacity(0.6f),
+                    Colour = Colour4.Black.Opacity(0.6f),
                 },
                 textContainer = new LinkFlowContainer(t => t.Font = OsuFont.GetFont(size: 14))
                 {
@@ -70,7 +68,7 @@ private void updateText()
             textContainer.Clear();
             textContainer.AddParagraph(downloadDisabled
                 ? BeatmapsetsStrings.AvailabilityDisabled
-                : BeatmapsetsStrings.AvailabilityPartsRemoved, t => t.Colour = Color4.Orange);
+                : BeatmapsetsStrings.AvailabilityPartsRemoved, t => t.Colour = Colour4.Orange);
 
             if (hasExternalLink)
             {
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs b/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
index 781baf9815e8..2c5de3a6d0b3 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
@@ -24,7 +24,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapSetHeader.cs b/osu.Game/Overlays/BeatmapSet/BeatmapSetHeader.cs
index 1df246ae773f..d73f75995216 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapSetHeader.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapSetHeader.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Localisation;
@@ -13,8 +12,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -36,7 +34,7 @@ public BeatmapSetHeader()
 
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black.Opacity(0.25f),
+                Colour = Colour4.Black.Opacity(0.25f),
                 Type = EdgeEffectType.Shadow,
                 Radius = 3,
                 Offset = new Vector2(0f, 1f),
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapSetHeaderContent.cs b/osu.Game/Overlays/BeatmapSet/BeatmapSetHeaderContent.cs
index 008965ba5ec6..f1c1d3c772e8 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapSetHeaderContent.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapSetHeaderContent.cs
@@ -7,7 +7,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -25,8 +24,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.BeatmapSet.Buttons;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -384,7 +382,7 @@ public MetadataLinkCompiler(ITextPart part)
                 [BackgroundDependencyLoader]
                 private void load()
                 {
-                    IdleColour = Color4.White;
+                    IdleColour = Colour4.White;
                 }
             }
         }
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapSetLayoutSection.cs b/osu.Game/Overlays/BeatmapSet/BeatmapSetLayoutSection.cs
index 4dd257c6ea8f..ef1fc58c1143 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapSetLayoutSection.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapSetLayoutSection.cs
@@ -1,12 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -19,7 +17,7 @@ public BeatmapSetLayoutSection()
             Masking = true;
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black.Opacity(0.25f),
+                Colour = Colour4.Black.Opacity(0.25f),
                 Type = EdgeEffectType.Shadow,
                 Radius = 3,
                 Offset = new Vector2(0f, 1f),
diff --git a/osu.Game/Overlays/BeatmapSet/Buttons/FavouriteButton.cs b/osu.Game/Overlays/BeatmapSet/Buttons/FavouriteButton.cs
index 215e521d42e8..800cabd1c6ef 100644
--- a/osu.Game/Overlays/BeatmapSet/Buttons/FavouriteButton.cs
+++ b/osu.Game/Overlays/BeatmapSet/Buttons/FavouriteButton.cs
@@ -15,7 +15,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Overlays.BeatmapSet.Buttons
diff --git a/osu.Game/Overlays/BeatmapSet/Buttons/HeaderDownloadButton.cs b/osu.Game/Overlays/BeatmapSet/Buttons/HeaderDownloadButton.cs
index d8dcf2b51b42..299785d95ab8 100644
--- a/osu.Game/Overlays/BeatmapSet/Buttons/HeaderDownloadButton.cs
+++ b/osu.Game/Overlays/BeatmapSet/Buttons/HeaderDownloadButton.cs
@@ -19,8 +19,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 using CommonStrings = osu.Game.Localisation.CommonStrings;
 
@@ -169,7 +168,7 @@ private void load(IAPIProvider api, BeatmapModelDownloader beatmaps)
 
         private void userChanged(ValueChangedEvent<APIUser> e) => button.Enabled.Value = !(e.NewValue is GuestUser);
 
-        private void enabledChanged(ValueChangedEvent<bool> e) => this.FadeColour(e.NewValue ? Color4.White : Color4.Gray, 200, Easing.OutQuint);
+        private void enabledChanged(ValueChangedEvent<bool> e) => this.FadeColour(e.NewValue ? Colour4.White : Colour4.Gray, 200, Easing.OutQuint);
 
         private LocalisableString getVideoSuffixText()
         {
diff --git a/osu.Game/Overlays/BeatmapSet/Buttons/PlayButton.cs b/osu.Game/Overlays/BeatmapSet/Buttons/PlayButton.cs
index 11327c05751a..0b2a0f58fc3d 100644
--- a/osu.Game/Overlays/BeatmapSet/Buttons/PlayButton.cs
+++ b/osu.Game/Overlays/BeatmapSet/Buttons/PlayButton.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Buttons
 {
@@ -46,7 +45,7 @@ public IBeatmapSetInfo BeatmapSet
             }
         }
 
-        private Color4 hoverColour;
+        private Colour4 hoverColour;
         private readonly SpriteIcon icon;
         private readonly LoadingSpinner loadingSpinner;
 
@@ -115,14 +114,14 @@ protected override bool OnHover(HoverEvent e)
         protected override void OnHoverLost(HoverLostEvent e)
         {
             if (!playing.Value)
-                icon.FadeColour(Color4.White, 120, Easing.InOutQuint);
+                icon.FadeColour(Colour4.White, 120, Easing.InOutQuint);
             base.OnHoverLost(e);
         }
 
         private void playingStateChanged(ValueChangedEvent<bool> e)
         {
             icon.Icon = e.NewValue ? FontAwesome.Solid.Stop : FontAwesome.Solid.Play;
-            icon.FadeColour(e.NewValue || IsHovered ? hoverColour : Color4.White, 120, Easing.InOutQuint);
+            icon.FadeColour(e.NewValue || IsHovered ? hoverColour : Colour4.White, 120, Easing.InOutQuint);
 
             if (e.NewValue)
             {
diff --git a/osu.Game/Overlays/BeatmapSet/Buttons/PreviewButton.cs b/osu.Game/Overlays/BeatmapSet/Buttons/PreviewButton.cs
index 1eff4a7c1196..7e13cdef7fa1 100644
--- a/osu.Game/Overlays/BeatmapSet/Buttons/PreviewButton.cs
+++ b/osu.Game/Overlays/BeatmapSet/Buttons/PreviewButton.cs
@@ -11,7 +11,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Buttons
 {
diff --git a/osu.Game/Overlays/BeatmapSet/Details.cs b/osu.Game/Overlays/BeatmapSet/Details.cs
index 6f0d4feb1c27..53586f882faa 100644
--- a/osu.Game/Overlays/BeatmapSet/Details.cs
+++ b/osu.Game/Overlays/BeatmapSet/Details.cs
@@ -11,7 +11,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.BeatmapSet.Buttons;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
diff --git a/osu.Game/Overlays/BeatmapSet/LeaderboardModSelector.cs b/osu.Game/Overlays/BeatmapSet/LeaderboardModSelector.cs
index a2164f02db61..c9392c49a69f 100644
--- a/osu.Game/Overlays/BeatmapSet/LeaderboardModSelector.cs
+++ b/osu.Game/Overlays/BeatmapSet/LeaderboardModSelector.cs
@@ -15,8 +15,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -130,7 +129,7 @@ protected override void LoadComplete()
                     if (Selected.Value)
                         return;
 
-                    this.FadeColour(highlighted.NewValue ? Color4.White : Color4.DimGray, duration, Easing.OutQuint);
+                    this.FadeColour(highlighted.NewValue ? Colour4.White : Colour4.DimGray, duration, Easing.OutQuint);
                 }, true);
 
                 Selected.BindValueChanged(selected =>
diff --git a/osu.Game/Overlays/BeatmapSet/LeaderboardScopeSelector.cs b/osu.Game/Overlays/BeatmapSet/LeaderboardScopeSelector.cs
index a9066f3ba824..f276e4bd4284 100644
--- a/osu.Game/Overlays/BeatmapSet/LeaderboardScopeSelector.cs
+++ b/osu.Game/Overlays/BeatmapSet/LeaderboardScopeSelector.cs
@@ -10,7 +10,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -74,7 +73,7 @@ protected override void OnHoverLost(HoverLostEvent e)
             {
                 base.OnHoverLost(e);
 
-                Text.FadeColour(Color4.White);
+                Text.FadeColour(Colour4.White);
             }
         }
     }
diff --git a/osu.Game/Overlays/BeatmapSet/MetadataSection.cs b/osu.Game/Overlays/BeatmapSet/MetadataSection.cs
index d32d8e83fbd9..afe45795a585 100644
--- a/osu.Game/Overlays/BeatmapSet/MetadataSection.cs
+++ b/osu.Game/Overlays/BeatmapSet/MetadataSection.cs
@@ -3,14 +3,12 @@
 
 using System;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet
 {
@@ -100,7 +98,7 @@ private void setTextFlowAsync(T metadata)
             {
                 RelativeSizeAxes = Axes.X,
                 AutoSizeAxes = Axes.Y,
-                Colour = Color4.White.Opacity(0.75f),
+                Colour = Colour4.White.Opacity(0.75f),
             }, loaded =>
             {
                 textFlow?.Expire();
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/DrawableTopScore.cs b/osu.Game/Overlays/BeatmapSet/Scores/DrawableTopScore.cs
index 01e441615665..cc083f884a54 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/DrawableTopScore.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/DrawableTopScore.cs
@@ -4,14 +4,12 @@
 #nullable disable
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
@@ -29,7 +27,7 @@ public DrawableTopScore(ScoreInfo score, int? position = 1)
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.2f),
+                Colour = Colour4.Black.Opacity(0.2f),
                 Radius = 1,
                 Offset = new Vector2(0, 1),
             };
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/NoTeamPlaceholder.cs b/osu.Game/Overlays/BeatmapSet/Scores/NoTeamPlaceholder.cs
index 0bd4a1334f52..b6e814df7858 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/NoTeamPlaceholder.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/NoTeamPlaceholder.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/NotSupporterPlaceholder.cs b/osu.Game/Overlays/BeatmapSet/Scores/NotSupporterPlaceholder.cs
index 36f71be606c7..89304f2bdabd 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/NotSupporterPlaceholder.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/NotSupporterPlaceholder.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/ScoreTable.cs b/osu.Game/Overlays/BeatmapSet/Scores/ScoreTable.cs
index a6f5a4562863..97ad5a6fc357 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/ScoreTable.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/ScoreTable.cs
@@ -23,8 +23,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
@@ -197,7 +196,7 @@ private Drawable[] createContent(int index, ScoreInfo score)
                     }
                 }
 
-                content.Add(new StatisticText(count, maxCount, @"N0") { Colour = count == 0 ? Color4.Gray : Color4.White });
+                content.Add(new StatisticText(count, maxCount, @"N0") { Colour = count == 0 ? Colour4.Gray : Colour4.White });
             }
 
             // TODO: all this should be using the same sort of logic as `DrawableProfileScore` is, but that's not easily done
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/ScoresContainer.cs b/osu.Game/Overlays/BeatmapSet/Scores/ScoresContainer.cs
index 63729319dba1..5f23b995d95f 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/ScoresContainer.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/ScoresContainer.cs
@@ -20,7 +20,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/TopScoreStatisticsSection.cs b/osu.Game/Overlays/BeatmapSet/Scores/TopScoreStatisticsSection.cs
index 8e342b49c9bd..988a3f93d3b0 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/TopScoreStatisticsSection.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/TopScoreStatisticsSection.cs
@@ -21,7 +21,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
diff --git a/osu.Game/Overlays/BeatmapSet/Scores/TopScoreUserSection.cs b/osu.Game/Overlays/BeatmapSet/Scores/TopScoreUserSection.cs
index 14c9bedc678e..02e5f6078d7a 100644
--- a/osu.Game/Overlays/BeatmapSet/Scores/TopScoreUserSection.cs
+++ b/osu.Game/Overlays/BeatmapSet/Scores/TopScoreUserSection.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +14,7 @@
 using osu.Game.Online.Leaderboards;
 using osu.Game.Scoring;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.BeatmapSet.Scores
 {
@@ -75,7 +73,7 @@ public TopScoreUserSection()
                         EdgeEffect = new EdgeEffectParameters
                         {
                             Type = EdgeEffectType.Shadow,
-                            Colour = Color4.Black.Opacity(0.25f),
+                            Colour = Colour4.Black.Opacity(0.25f),
                             Offset = new Vector2(0, 2),
                             Radius = 1,
                         },
diff --git a/osu.Game/Overlays/BeatmapSetOverlay.cs b/osu.Game/Overlays/BeatmapSetOverlay.cs
index 255e30038be4..0ae6a8207d42 100644
--- a/osu.Game/Overlays/BeatmapSetOverlay.cs
+++ b/osu.Game/Overlays/BeatmapSetOverlay.cs
@@ -14,8 +14,7 @@
 using osu.Game.Overlays.BeatmapSet;
 using osu.Game.Overlays.BeatmapSet.Scores;
 using osu.Game.Overlays.Comments;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -79,7 +78,7 @@ private void load()
 
         protected override BeatmapSetHeader CreateHeader() => new BeatmapSetHeader();
 
-        protected override Color4 BackgroundColour => ColourProvider.Background6;
+        protected override Colour4 BackgroundColour => ColourProvider.Background6;
 
         protected override void PopOutComplete()
         {
diff --git a/osu.Game/Overlays/Changelog/ChangelogEntry.cs b/osu.Game/Overlays/Changelog/ChangelogEntry.cs
index d6021972c609..79dbaf3ac83f 100644
--- a/osu.Game/Overlays/Changelog/ChangelogEntry.cs
+++ b/osu.Game/Overlays/Changelog/ChangelogEntry.cs
@@ -6,7 +6,6 @@
 using System.Net;
 using System.Text.RegularExpressions;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Overlays.Changelog
@@ -60,7 +58,7 @@ private void load()
 
         private Drawable createTitle()
         {
-            var entryColour = entry.Major ? colours.YellowLight : Color4.White;
+            var entryColour = entry.Major ? colours.YellowLight : Colour4.White;
 
             LinkFlowContainer title;
 
@@ -114,7 +112,7 @@ private Drawable createTitle()
             return titleContainer;
         }
 
-        private void addRepositoryReference(LinkFlowContainer title, Color4 entryColour)
+        private void addRepositoryReference(LinkFlowContainer title, Colour4 entryColour)
         {
             Debug.Assert(!string.IsNullOrEmpty(entry.Repository));
             Debug.Assert(!string.IsNullOrEmpty(entry.GithubUrl));
@@ -139,7 +137,7 @@ private void addRepositoryReference(LinkFlowContainer title, Color4 entryColour)
             });
         }
 
-        private void addGithubAuthorReference(LinkFlowContainer title, Color4 entryColour)
+        private void addGithubAuthorReference(LinkFlowContainer title, Colour4 entryColour)
         {
             title.AddText("by ", t =>
             {
diff --git a/osu.Game/Overlays/Changelog/ChangelogSingleBuild.cs b/osu.Game/Overlays/Changelog/ChangelogSingleBuild.cs
index a9ee77ce5daa..2d500f265262 100644
--- a/osu.Game/Overlays/Changelog/ChangelogSingleBuild.cs
+++ b/osu.Game/Overlays/Changelog/ChangelogSingleBuild.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Threading;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -18,7 +17,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Comments;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Changelog
 {
diff --git a/osu.Game/Overlays/Changelog/ChangelogSupporterPromo.cs b/osu.Game/Overlays/Changelog/ChangelogSupporterPromo.cs
index 012ccf8f643d..a924e47fb304 100644
--- a/osu.Game/Overlays/Changelog/ChangelogSupporterPromo.cs
+++ b/osu.Game/Overlays/Changelog/ChangelogSupporterPromo.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Chat;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Changelog
 {
@@ -52,7 +50,7 @@ private void load(OsuColour colour, TextureStore textures, OverlayColourProvider
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Offset = new Vector2(0, 1),
                         Radius = 3,
                     },
@@ -178,7 +176,7 @@ public SupporterPromoLinkCompiler(ITextPart part)
                 private void load(OsuColour colour)
                 {
                     IdleColour = colour.PinkDark;
-                    HoverColour = Color4.White;
+                    HoverColour = Colour4.White;
                 }
             }
         }
diff --git a/osu.Game/Overlays/Changelog/ChangelogUpdateStreamItem.cs b/osu.Game/Overlays/Changelog/ChangelogUpdateStreamItem.cs
index df1ea6c28322..6e143755451d 100644
--- a/osu.Game/Overlays/Changelog/ChangelogUpdateStreamItem.cs
+++ b/osu.Game/Overlays/Changelog/ChangelogUpdateStreamItem.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Overlays.Changelog
 {
@@ -22,6 +22,6 @@ public ChangelogUpdateStreamItem(APIUpdateStream stream)
             InfoText = Value.UserCount > 0 ? $"{"user".ToQuantity(Value.UserCount, "N0")} online" : default(LocalisableString);
         }
 
-        protected override Color4 GetBarColour(OsuColour colours) => Value.Colour;
+        protected override Colour4 GetBarColour(OsuColour colours) => Value.Colour;
     }
 }
diff --git a/osu.Game/Overlays/ChangelogOverlay.cs b/osu.Game/Overlays/ChangelogOverlay.cs
index fa7920caf856..755750e5c379 100644
--- a/osu.Game/Overlays/ChangelogOverlay.cs
+++ b/osu.Game/Overlays/ChangelogOverlay.cs
@@ -18,7 +18,6 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Changelog;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -54,7 +53,7 @@ private void load()
             ListingSelected = ShowListing,
         };
 
-        protected override Color4 BackgroundColour => ColourProvider.Background4;
+        protected override Colour4 BackgroundColour => ColourProvider.Background4;
 
         public void ShowListing()
         {
diff --git a/osu.Game/Overlays/Chat/ChannelList/ChannelList.cs b/osu.Game/Overlays/Chat/ChannelList/ChannelList.cs
index 7d465061817b..f3cc973f6f24 100644
--- a/osu.Game/Overlays/Chat/ChannelList/ChannelList.cs
+++ b/osu.Game/Overlays/Chat/ChannelList/ChannelList.cs
@@ -20,7 +20,7 @@
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.Chat.Listing;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat.ChannelList
 {
diff --git a/osu.Game/Overlays/Chat/ChannelList/ChannelListItem.cs b/osu.Game/Overlays/Chat/ChannelList/ChannelListItem.cs
index 9179213d8f95..0b5651529bb2 100644
--- a/osu.Game/Overlays/Chat/ChannelList/ChannelListItem.cs
+++ b/osu.Game/Overlays/Chat/ChannelList/ChannelListItem.cs
@@ -17,8 +17,8 @@
 using osu.Game.Online.Chat;
 using osu.Game.Overlays.Chat.Listing;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Chat.ChannelList
 {
diff --git a/osu.Game/Overlays/Chat/ChannelList/ChannelListItemCloseButton.cs b/osu.Game/Overlays/Chat/ChannelList/ChannelListItemCloseButton.cs
index 204b9aab19a7..d7745481672b 100644
--- a/osu.Game/Overlays/Chat/ChannelList/ChannelListItemCloseButton.cs
+++ b/osu.Game/Overlays/Chat/ChannelList/ChannelListItemCloseButton.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat.ChannelList
 {
@@ -16,14 +15,14 @@ public partial class ChannelListItemCloseButton : OsuClickableContainer
     {
         private SpriteIcon icon = null!;
 
-        private Color4 normalColour;
-        private Color4 hoveredColour;
+        private Colour4 normalColour;
+        private Colour4 hoveredColour;
 
         [BackgroundDependencyLoader]
         private void load(OsuColour osuColour)
         {
             normalColour = osuColour.Red2;
-            hoveredColour = Color4.White;
+            hoveredColour = Colour4.White;
 
             Alpha = 0f;
             Size = new Vector2(20);
diff --git a/osu.Game/Overlays/Chat/ChannelList/ChannelListItemMentionPill.cs b/osu.Game/Overlays/Chat/ChannelList/ChannelListItemMentionPill.cs
index bbd042cfc933..13a57f0fe4e1 100644
--- a/osu.Game/Overlays/Chat/ChannelList/ChannelListItemMentionPill.cs
+++ b/osu.Game/Overlays/Chat/ChannelList/ChannelListItemMentionPill.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat.ChannelList
 {
@@ -59,7 +58,7 @@ protected override void LoadComplete()
                 if (mentionCount > 0)
                 {
                     this.FadeIn(1000, Easing.OutQuint);
-                    box.FlashColour(Color4.White, 500, Easing.OutQuint);
+                    box.FlashColour(Colour4.White, 500, Easing.OutQuint);
                 }
                 else
                     this.FadeOut(100, Easing.OutQuint);
diff --git a/osu.Game/Overlays/Chat/ChatLine.cs b/osu.Game/Overlays/Chat/ChatLine.cs
index 2669daf70fe1..c749f6d8377b 100644
--- a/osu.Game/Overlays/Chat/ChatLine.cs
+++ b/osu.Game/Overlays/Chat/ChatLine.cs
@@ -21,8 +21,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat
 {
@@ -30,7 +29,7 @@ public partial class ChatLine : CompositeDrawable, IHasPopover
     {
         public Message Message
         {
-            get;
+            get => field!;
             set
             {
                 if (field == value) return;
@@ -42,7 +41,7 @@ public Message Message
 
                 updateMessageContent();
             }
-        } = null!;
+        }
 
         public IEnumerable<Drawable> DrawableContentFlow => drawableContentFlow.Children;
 
@@ -113,7 +112,7 @@ public bool AlternatingBackground
         /// <item>a random colour from <see cref="default_username_colours"/> if the above is empty.</item>
         /// </list>
         /// </remarks>
-        public Color4 UsernameColour { get; init; }
+        public Colour4 UsernameColour { get; init; }
 
         public ChatLine(Message message)
         {
@@ -255,10 +254,10 @@ private void styleMessageContent(SpriteText text)
             text.Shadow = false;
             text.Font = text.Font.With(size: font_size, italics: Message.IsAction, weight: isMention ? FontWeight.SemiBold : FontWeight.Medium);
 
-            Color4 messageColour = colourProvider?.Content1 ?? Colour4.White;
+            Colour4 messageColour = colourProvider?.Content1 ?? Colour4.White;
 
             if (isMention)
-                messageColour = colourProvider?.Highlight1 ?? Color4.Orange;
+                messageColour = colourProvider?.Highlight1 ?? Colour4.Orange;
             else if (Message.IsAction && !string.IsNullOrEmpty(Message.Sender.Colour))
                 messageColour = Color4Extensions.FromHex(Message.Sender.Colour);
 
@@ -298,7 +297,7 @@ private void updateTimestamp()
             drawableTimestamp.Text = Message.Timestamp.LocalDateTime.ToLocalisableString(prefer24HourTime.Value ? @"HH:mm" : @"hh:mm tt");
         }
 
-        private static readonly Color4[] default_username_colours =
+        private static readonly Colour4[] default_username_colours =
         {
             Color4Extensions.FromHex("588c7e"),
             Color4Extensions.FromHex("b2a367"),
diff --git a/osu.Game/Overlays/Chat/ChatOverlayTopBar.cs b/osu.Game/Overlays/Chat/ChatOverlayTopBar.cs
index 3ecdb0997686..4049a4a4e351 100644
--- a/osu.Game/Overlays/Chat/ChatOverlayTopBar.cs
+++ b/osu.Game/Overlays/Chat/ChatOverlayTopBar.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat
 {
diff --git a/osu.Game/Overlays/Chat/ChatTextBar.cs b/osu.Game/Overlays/Chat/ChatTextBar.cs
index 0a42363279d8..dae26b94ba1a 100644
--- a/osu.Game/Overlays/Chat/ChatTextBar.cs
+++ b/osu.Game/Overlays/Chat/ChatTextBar.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Chat;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat
 {
diff --git a/osu.Game/Overlays/Chat/DrawableChannel.cs b/osu.Game/Overlays/Chat/DrawableChannel.cs
index 3cf8bf6df595..23e944497773 100644
--- a/osu.Game/Overlays/Chat/DrawableChannel.cs
+++ b/osu.Game/Overlays/Chat/DrawableChannel.cs
@@ -13,7 +13,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.Chat;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Chat
 {
@@ -228,7 +227,7 @@ private void messageRemoved(Message removed) => Schedule(() =>
             if (removedLine == null)
                 return;
 
-            removedLine.FadeColour(Color4.Red, 400).FadeOut(fade_time).Expire();
+            removedLine.FadeColour(Colour4.Red, 400).FadeOut(fade_time).Expire();
 
             // Resolve new colours and timestamps resulting from the removal.
             this.Delay(fade_time).Schedule(() =>
diff --git a/osu.Game/Overlays/Chat/DrawableChatUsername.cs b/osu.Game/Overlays/Chat/DrawableChatUsername.cs
index bae16f14260f..253079a35171 100644
--- a/osu.Game/Overlays/Chat/DrawableChatUsername.cs
+++ b/osu.Game/Overlays/Chat/DrawableChatUsername.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -29,8 +28,7 @@
 using osu.Game.Screens;
 using osu.Game.Screens.Play;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using ChatStrings = osu.Game.Localisation.ChatStrings;
 
 namespace osu.Game.Overlays.Chat
@@ -42,7 +40,7 @@ public partial class DrawableChatUsername : OsuClickableContainer, IHasContextMe
         /// <summary>
         /// The primary colour to use for the username.
         /// </summary>
-        public Color4 AccentColour { get; init; }
+        public Colour4 AccentColour { get; init; }
 
         /// <summary>
         /// If set to <see langword="false"/>, the username will be drawn as plain text in <see cref="AccentColour"/>.
@@ -135,7 +133,7 @@ private void load()
                     {
                         Roundness = 1,
                         Radius = 1,
-                        Colour = Color4.Black.Opacity(0.3f),
+                        Colour = Colour4.Black.Opacity(0.3f),
                         Offset = new Vector2(0, 1),
                         Type = EdgeEffectType.Shadow,
                     },
diff --git a/osu.Game/Overlays/Chat/Listing/ChannelListingItem.cs b/osu.Game/Overlays/Chat/Listing/ChannelListingItem.cs
index 539d7c50751a..ec7970311190 100644
--- a/osu.Game/Overlays/Chat/Listing/ChannelListingItem.cs
+++ b/osu.Game/Overlays/Chat/Listing/ChannelListingItem.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Chat;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Chat.Listing
 {
diff --git a/osu.Game/Overlays/Comments/Buttons/ChevronButton.cs b/osu.Game/Overlays/Comments/Buttons/ChevronButton.cs
index 2efe4393a0bd..ae1c01af4e62 100644
--- a/osu.Game/Overlays/Comments/Buttons/ChevronButton.cs
+++ b/osu.Game/Overlays/Comments/Buttons/ChevronButton.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments.Buttons
 {
diff --git a/osu.Game/Overlays/Comments/Buttons/CommentRepliesButton.cs b/osu.Game/Overlays/Comments/Buttons/CommentRepliesButton.cs
index 543ed7e722b1..3e21c129e9da 100644
--- a/osu.Game/Overlays/Comments/Buttons/CommentRepliesButton.cs
+++ b/osu.Game/Overlays/Comments/Buttons/CommentRepliesButton.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 using static osu.Game.Graphics.UserInterface.ShowMoreButton;
 
 namespace osu.Game.Overlays.Comments.Buttons
diff --git a/osu.Game/Overlays/Comments/Buttons/ShowMoreRepliesButton.cs b/osu.Game/Overlays/Comments/Buttons/ShowMoreRepliesButton.cs
index 64ffda6ecf25..8f871dcca72b 100644
--- a/osu.Game/Overlays/Comments/Buttons/ShowMoreRepliesButton.cs
+++ b/osu.Game/Overlays/Comments/Buttons/ShowMoreRepliesButton.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments.Buttons
 {
diff --git a/osu.Game/Overlays/Comments/CommentAuthorLine.cs b/osu.Game/Overlays/Comments/CommentAuthorLine.cs
index 1f6fef4df35a..da90f1ea1f45 100644
--- a/osu.Game/Overlays/Comments/CommentAuthorLine.cs
+++ b/osu.Game/Overlays/Comments/CommentAuthorLine.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/CommentEditor.cs b/osu.Game/Overlays/Comments/CommentEditor.cs
index d679b8cf4f2f..aba04eb8a426 100644
--- a/osu.Game/Overlays/Comments/CommentEditor.cs
+++ b/osu.Game/Overlays/Comments/CommentEditor.cs
@@ -16,8 +16,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
@@ -228,7 +227,7 @@ private partial class EditorTextBox : OsuTextBox
         {
             protected override float LeftRightPadding => side_padding;
 
-            protected override Color4 SelectionColour => Color4.Gray;
+            protected override Colour4 SelectionColour => Colour4.Gray;
 
             private OsuSpriteText placeholder = null!;
 
diff --git a/osu.Game/Overlays/Comments/CommentMarkdownContainer.cs b/osu.Game/Overlays/Comments/CommentMarkdownContainer.cs
index 51e1b863c767..6d007abcd46b 100644
--- a/osu.Game/Overlays/Comments/CommentMarkdownContainer.cs
+++ b/osu.Game/Overlays/Comments/CommentMarkdownContainer.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics.Containers.Markdown;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/CommentReportButton.cs b/osu.Game/Overlays/Comments/CommentReportButton.cs
index 8303a13e5ce9..0a70d3bae118 100644
--- a/osu.Game/Overlays/Comments/CommentReportButton.cs
+++ b/osu.Game/Overlays/Comments/CommentReportButton.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/CommentsContainer.cs b/osu.Game/Overlays/Comments/CommentsContainer.cs
index 24969f7a0009..6c3ddd11de67 100644
--- a/osu.Game/Overlays/Comments/CommentsContainer.cs
+++ b/osu.Game/Overlays/Comments/CommentsContainer.cs
@@ -24,7 +24,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/CommentsHeader.cs b/osu.Game/Overlays/Comments/CommentsHeader.cs
index f7cda0e3f566..748e549da7ab 100644
--- a/osu.Game/Overlays/Comments/CommentsHeader.cs
+++ b/osu.Game/Overlays/Comments/CommentsHeader.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/DeletedCommentsCounter.cs b/osu.Game/Overlays/Comments/DeletedCommentsCounter.cs
index deaf74fa0a47..611c00438731 100644
--- a/osu.Game/Overlays/Comments/DeletedCommentsCounter.cs
+++ b/osu.Game/Overlays/Comments/DeletedCommentsCounter.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/DrawableComment.cs b/osu.Game/Overlays/Comments/DrawableComment.cs
index 5f1923fce34d..f8b4696fdf36 100644
--- a/osu.Game/Overlays/Comments/DrawableComment.cs
+++ b/osu.Game/Overlays/Comments/DrawableComment.cs
@@ -25,7 +25,7 @@
 using osu.Game.Overlays.Comments.Buttons;
 using osu.Game.Overlays.Dialog;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Overlays.Comments
diff --git a/osu.Game/Overlays/Comments/TotalCommentsCounter.cs b/osu.Game/Overlays/Comments/TotalCommentsCounter.cs
index 04655b8a202f..42af54b1813f 100644
--- a/osu.Game/Overlays/Comments/TotalCommentsCounter.cs
+++ b/osu.Game/Overlays/Comments/TotalCommentsCounter.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
diff --git a/osu.Game/Overlays/Comments/VotePill.cs b/osu.Game/Overlays/Comments/VotePill.cs
index 402cac6ed755..aaa6e398293f 100644
--- a/osu.Game/Overlays/Comments/VotePill.cs
+++ b/osu.Game/Overlays/Comments/VotePill.cs
@@ -7,7 +7,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -19,8 +18,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Comments
 {
@@ -28,7 +26,7 @@ public partial class VotePill : LoadingButton, IHasAccentColour
     {
         private const int duration = 200;
 
-        public Color4 AccentColour { get; set; }
+        public Colour4 AccentColour { get; set; }
 
         protected override IEnumerable<Drawable> EffectTargets => [];
 
@@ -67,7 +65,7 @@ public VotePill(Comment comment)
         private void load(OsuColour colours)
         {
             AccentColour = borderContainer.BorderColour = sideNumber.Colour = colours.GreenLight;
-            hoverLayer.Colour = Color4.Black.Opacity(0.5f);
+            hoverLayer.Colour = Colour4.Black.Opacity(0.5f);
 
             bool ownComment = api.LocalUser.Value.Id == comment.UserId;
 
diff --git a/osu.Game/Overlays/Dashboard/CurrentlyOnline/OnlineUserGridPanel.cs b/osu.Game/Overlays/Dashboard/CurrentlyOnline/OnlineUserGridPanel.cs
index 3bc173990aba..5aab837ab1b1 100644
--- a/osu.Game/Overlays/Dashboard/CurrentlyOnline/OnlineUserGridPanel.cs
+++ b/osu.Game/Overlays/Dashboard/CurrentlyOnline/OnlineUserGridPanel.cs
@@ -7,7 +7,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.OnlinePlay.Match.Components;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.CurrentlyOnline
 {
diff --git a/osu.Game/Overlays/Dashboard/CurrentlyOnline/RealtimeUserList.cs b/osu.Game/Overlays/Dashboard/CurrentlyOnline/RealtimeUserList.cs
index 32f89dde4bc2..cd8cd2c599ce 100644
--- a/osu.Game/Overlays/Dashboard/CurrentlyOnline/RealtimeUserList.cs
+++ b/osu.Game/Overlays/Dashboard/CurrentlyOnline/RealtimeUserList.cs
@@ -17,7 +17,7 @@
 using osu.Game.Overlays.Dashboard.Friends;
 using osu.Game.Rulesets;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.CurrentlyOnline
 {
@@ -178,6 +178,7 @@ private static void updateUserSpectateState(UserPresence presence, OnlineUserPan
                     break;
 
                 case UserActivity.InSoloGame:
+                case UserActivity.PlayingDailyChallenge:
                 case UserActivity.InMultiplayerGame:
                 case UserActivity.InPlaylistGame:
                     userPanel.CanSpectate.Value = true;
diff --git a/osu.Game/Overlays/Dashboard/Friends/FriendsList.cs b/osu.Game/Overlays/Dashboard/Friends/FriendsList.cs
index d30534afe72b..60198f587f6f 100644
--- a/osu.Game/Overlays/Dashboard/Friends/FriendsList.cs
+++ b/osu.Game/Overlays/Dashboard/Friends/FriendsList.cs
@@ -12,7 +12,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Metadata;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Friends
 {
diff --git a/osu.Game/Overlays/Dashboard/Friends/FriendsOnlineStatusItem.cs b/osu.Game/Overlays/Dashboard/Friends/FriendsOnlineStatusItem.cs
index 459592085b77..afaaaa9fa895 100644
--- a/osu.Game/Overlays/Dashboard/Friends/FriendsOnlineStatusItem.cs
+++ b/osu.Game/Overlays/Dashboard/Friends/FriendsOnlineStatusItem.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
 using osu.Game.Graphics;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Overlays.Dashboard.Friends
 {
@@ -25,18 +25,18 @@ protected override void LoadComplete()
             UserCount.BindValueChanged(count => AdditionalText = count.NewValue.ToString(), true);
         }
 
-        protected override Color4 GetBarColour(OsuColour colours)
+        protected override Colour4 GetBarColour(OsuColour colours)
         {
             switch (Value)
             {
                 case OnlineStatus.All:
-                    return Color4.White;
+                    return Colour4.White;
 
                 case OnlineStatus.Online:
                     return colours.GreenLight;
 
                 case OnlineStatus.Offline:
-                    return Color4.Black;
+                    return Colour4.Black;
 
                 default:
                     throw new ArgumentException($@"{Value} status does not provide a colour in {nameof(GetBarColour)}.");
diff --git a/osu.Game/Overlays/Dashboard/Friends/UserListToolbar.cs b/osu.Game/Overlays/Dashboard/Friends/UserListToolbar.cs
index 9098c5ab6690..7da905d38429 100644
--- a/osu.Game/Overlays/Dashboard/Friends/UserListToolbar.cs
+++ b/osu.Game/Overlays/Dashboard/Friends/UserListToolbar.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Configuration;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Friends
 {
diff --git a/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapListing.cs b/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapListing.cs
index 4eac1a1d29e6..5078797f86ab 100644
--- a/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapListing.cs
+++ b/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapListing.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home
 {
diff --git a/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapPanel.cs b/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapPanel.cs
index f36e6b49bb71..9646e9b2917e 100644
--- a/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapPanel.cs
+++ b/osu.Game/Overlays/Dashboard/Home/DashboardBeatmapPanel.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home
 {
diff --git a/osu.Game/Overlays/Dashboard/Home/DashboardPopularBeatmapPanel.cs b/osu.Game/Overlays/Dashboard/Home/DashboardPopularBeatmapPanel.cs
index a08a1fef6f35..f5d2dc39c20d 100644
--- a/osu.Game/Overlays/Dashboard/Home/DashboardPopularBeatmapPanel.cs
+++ b/osu.Game/Overlays/Dashboard/Home/DashboardPopularBeatmapPanel.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home
 {
diff --git a/osu.Game/Overlays/Dashboard/Home/DrawableBeatmapList.cs b/osu.Game/Overlays/Dashboard/Home/DrawableBeatmapList.cs
index a0e22a0fafb1..d0b540f5a922 100644
--- a/osu.Game/Overlays/Dashboard/Home/DrawableBeatmapList.cs
+++ b/osu.Game/Overlays/Dashboard/Home/DrawableBeatmapList.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home
 {
diff --git a/osu.Game/Overlays/Dashboard/Home/HomePanel.cs b/osu.Game/Overlays/Dashboard/Home/HomePanel.cs
index 93db9978a75a..95af28723abe 100644
--- a/osu.Game/Overlays/Dashboard/Home/HomePanel.cs
+++ b/osu.Game/Overlays/Dashboard/Home/HomePanel.cs
@@ -2,13 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home
 {
@@ -26,7 +24,7 @@ public HomePanel()
             Masking = true;
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black.Opacity(0.25f),
+                Colour = Colour4.Black.Opacity(0.25f),
                 Type = EdgeEffectType.Shadow,
                 Radius = 3,
                 Offset = new Vector2(0, 1)
diff --git a/osu.Game/Overlays/Dashboard/Home/News/FeaturedNewsItemPanel.cs b/osu.Game/Overlays/Dashboard/Home/News/FeaturedNewsItemPanel.cs
index 86babf82b566..caad4f003e8a 100644
--- a/osu.Game/Overlays/Dashboard/Home/News/FeaturedNewsItemPanel.cs
+++ b/osu.Game/Overlays/Dashboard/Home/News/FeaturedNewsItemPanel.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.News;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.Home.News
 {
@@ -132,7 +131,7 @@ private void load(GameHost host)
                 TooltipText = "view in browser";
                 Action = () => host.OpenUrlExternally("https://osu.ppy.sh/home/news/" + post.Slug);
 
-                HoverColour = Color4.White;
+                HoverColour = Colour4.White;
             }
         }
 
diff --git a/osu.Game/Overlays/Dashboard/Home/News/ShowMoreNewsPanel.cs b/osu.Game/Overlays/Dashboard/Home/News/ShowMoreNewsPanel.cs
index 3e61dd193851..658a7be6b5a5 100644
--- a/osu.Game/Overlays/Dashboard/Home/News/ShowMoreNewsPanel.cs
+++ b/osu.Game/Overlays/Dashboard/Home/News/ShowMoreNewsPanel.cs
@@ -9,7 +9,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Dashboard.Home.News
 {
@@ -43,7 +42,7 @@ private void load(OverlayColourProvider colourProvider)
             };
 
             IdleColour = colourProvider.Light1;
-            HoverColour = Color4.White;
+            HoverColour = Colour4.White;
 
             Action = () =>
             {
diff --git a/osu.Game/Overlays/Dashboard/UserSearch/UserPanelList.cs b/osu.Game/Overlays/Dashboard/UserSearch/UserPanelList.cs
index 262b91b3a5fe..d0250251b812 100644
--- a/osu.Game/Overlays/Dashboard/UserSearch/UserPanelList.cs
+++ b/osu.Game/Overlays/Dashboard/UserSearch/UserPanelList.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Dashboard.UserSearch
 {
diff --git a/osu.Game/Overlays/DevBuildBanner.cs b/osu.Game/Overlays/DevBuildBanner.cs
index f514483e7604..f01eb52f5c39 100644
--- a/osu.Game/Overlays/DevBuildBanner.cs
+++ b/osu.Game/Overlays/DevBuildBanner.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/Dialog/PopupDialog.cs b/osu.Game/Overlays/Dialog/PopupDialog.cs
index 56ffd12459e8..3e10cec6c705 100644
--- a/osu.Game/Overlays/Dialog/PopupDialog.cs
+++ b/osu.Game/Overlays/Dialog/PopupDialog.cs
@@ -17,9 +17,8 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Dialog
 {
@@ -132,7 +131,7 @@ protected PopupDialog()
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(0.2f),
+                                Colour = Colour4.Black.Opacity(0.2f),
                                 Radius = 14,
                             },
                             Children = new Drawable[]
@@ -180,14 +179,14 @@ protected PopupDialog()
                                             Origin = Anchor.Centre,
                                             Anchor = Anchor.Centre,
                                             Masking = true,
-                                            BorderColour = Color4.White,
+                                            BorderColour = Colour4.White,
                                             BorderThickness = 5f,
                                             Children = new Drawable[]
                                             {
                                                 new Box
                                                 {
                                                     RelativeSizeAxes = Axes.Both,
-                                                    Colour = Color4.Black.Opacity(0),
+                                                    Colour = Colour4.Black.Opacity(0),
                                                 },
                                                 icon = new SpriteIcon
                                                 {
diff --git a/osu.Game/Overlays/FirstRunSetup/ProgressRoundedButton.cs b/osu.Game/Overlays/FirstRunSetup/ProgressRoundedButton.cs
index a1e61e66f804..3740bbd0b1c5 100644
--- a/osu.Game/Overlays/FirstRunSetup/ProgressRoundedButton.cs
+++ b/osu.Game/Overlays/FirstRunSetup/ProgressRoundedButton.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.FirstRunSetup
 {
diff --git a/osu.Game/Overlays/FirstRunSetup/ScreenBeatmaps.cs b/osu.Game/Overlays/FirstRunSetup/ScreenBeatmaps.cs
index 392b170ad272..428cd604952a 100644
--- a/osu.Game/Overlays/FirstRunSetup/ScreenBeatmaps.cs
+++ b/osu.Game/Overlays/FirstRunSetup/ScreenBeatmaps.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Localisation;
 using osu.Game.Online;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Overlays.FirstRunSetup
@@ -182,7 +181,7 @@ private void downloadBundled()
                 return;
 
             downloadInBackgroundText
-                .FlashColour(Color4.White, 500)
+                .FlashColour(Colour4.White, 500)
                 .FadeIn(200);
 
             bundledDownloader = new BundledBeatmapDownloader(false);
diff --git a/osu.Game/Overlays/FirstRunSetup/ScreenImportFromStable.cs b/osu.Game/Overlays/FirstRunSetup/ScreenImportFromStable.cs
index 5bdcd8e85053..3b087792e9d7 100644
--- a/osu.Game/Overlays/FirstRunSetup/ScreenImportFromStable.cs
+++ b/osu.Game/Overlays/FirstRunSetup/ScreenImportFromStable.cs
@@ -26,7 +26,7 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays.Settings.Sections.Maintenance;
 using osu.Game.Screens.Edit.Setup;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.FirstRunSetup
 {
diff --git a/osu.Game/Overlays/FirstRunSetup/ScreenUIScale.cs b/osu.Game/Overlays/FirstRunSetup/ScreenUIScale.cs
index 5ef6df916dab..26a3900e5ba6 100644
--- a/osu.Game/Overlays/FirstRunSetup/ScreenUIScale.cs
+++ b/osu.Game/Overlays/FirstRunSetup/ScreenUIScale.cs
@@ -27,7 +27,7 @@
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Select;
 using osu.Game.Tests.Visual;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.FirstRunSetup
 {
diff --git a/osu.Game/Overlays/FirstRunSetup/ScreenWelcome.cs b/osu.Game/Overlays/FirstRunSetup/ScreenWelcome.cs
index 0c107d439ca6..461271288a72 100644
--- a/osu.Game/Overlays/FirstRunSetup/ScreenWelcome.cs
+++ b/osu.Game/Overlays/FirstRunSetup/ScreenWelcome.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Overlays.Settings;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.FirstRunSetup
 {
diff --git a/osu.Game/Overlays/FullscreenOverlay.cs b/osu.Game/Overlays/FullscreenOverlay.cs
index c2ecb558140e..a85172e36eb9 100644
--- a/osu.Game/Overlays/FullscreenOverlay.cs
+++ b/osu.Game/Overlays/FullscreenOverlay.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics.CodeAnalysis;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,7 +11,6 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -25,7 +23,7 @@ public abstract partial class FullscreenOverlay<T> : WaveOverlayContainer, IName
 
         public T Header { get; private set; }
 
-        protected virtual Color4 BackgroundColour => ColourProvider.Background5;
+        protected virtual Colour4 BackgroundColour => ColourProvider.Background5;
 
         [Resolved]
         protected IAPIProvider API { get; private set; } = null!;
@@ -54,7 +52,7 @@ protected FullscreenOverlay(OverlayColourScheme colourScheme)
 
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black.Opacity(0),
+                Colour = Colour4.Black.Opacity(0),
                 Type = EdgeEffectType.Shadow,
                 Hollow = true,
                 Radius = 10
diff --git a/osu.Game/Overlays/HoldToConfirmOverlay.cs b/osu.Game/Overlays/HoldToConfirmOverlay.cs
index b9c32f9f8c47..3fe9b2839631 100644
--- a/osu.Game/Overlays/HoldToConfirmOverlay.cs
+++ b/osu.Game/Overlays/HoldToConfirmOverlay.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -44,7 +43,7 @@ private void load()
                 overlay = new Box
                 {
                     Alpha = 0,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both,
                 }
             };
diff --git a/osu.Game/Overlays/Login/LoginForm.cs b/osu.Game/Overlays/Login/LoginForm.cs
index 6bcececc1c1a..297de14e8d6b 100644
--- a/osu.Game/Overlays/Login/LoginForm.cs
+++ b/osu.Game/Overlays/Login/LoginForm.cs
@@ -18,7 +18,7 @@
 using osu.Game.Online.API;
 using osu.Game.Overlays.Settings;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Login
 {
diff --git a/osu.Game/Overlays/Login/LoginPanel.cs b/osu.Game/Overlays/Login/LoginPanel.cs
index ec5410839617..91b47916968c 100644
--- a/osu.Game/Overlays/Login/LoginPanel.cs
+++ b/osu.Game/Overlays/Login/LoginPanel.cs
@@ -18,7 +18,7 @@
 using osu.Game.Online.API;
 using osu.Game.Overlays.Settings;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Login
 {
diff --git a/osu.Game/Overlays/Login/SecondFactorAuthForm.cs b/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
index 38025de1d9bb..532883fe7c07 100644
--- a/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
+++ b/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
@@ -17,7 +17,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Settings;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Login
 {
diff --git a/osu.Game/Overlays/Login/UserDropdown.cs b/osu.Game/Overlays/Login/UserDropdown.cs
index f2a12f9a1e45..5302fb98936b 100644
--- a/osu.Game/Overlays/Login/UserDropdown.cs
+++ b/osu.Game/Overlays/Login/UserDropdown.cs
@@ -5,8 +5,7 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Login
 {
@@ -16,7 +15,7 @@ public partial class UserDropdown : OsuEnumDropdown<UserAction>
 
         protected override DropdownMenu CreateMenu() => new UserDropdownMenu();
 
-        public Color4 StatusColour
+        public Colour4 StatusColour
         {
             set
             {
@@ -43,7 +42,7 @@ private partial class UserDropdownHeader : OsuDropdownHeader
         {
             private readonly StatusIcon statusIcon;
 
-            public Color4 StatusColour
+            public Colour4 StatusColour
             {
                 set => statusIcon.FadeColour(value, 500, Easing.OutQuint);
             }
diff --git a/osu.Game/Overlays/LoginOverlay.cs b/osu.Game/Overlays/LoginOverlay.cs
index 013d42077de2..4c322c84cbb8 100644
--- a/osu.Game/Overlays/LoginOverlay.cs
+++ b/osu.Game/Overlays/LoginOverlay.cs
@@ -10,7 +10,6 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Overlays.Login;
 using osu.Game.Overlays.Settings;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -31,7 +30,7 @@ public LoginOverlay()
             Masking = true;
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black,
+                Colour = Colour4.Black,
                 Type = EdgeEffectType.Shadow,
                 Radius = 10,
                 Hollow = true,
diff --git a/osu.Game/Overlays/MarqueeContainer.cs b/osu.Game/Overlays/MarqueeContainer.cs
index 7bc90a10d3e4..5352cc2accbb 100644
--- a/osu.Game/Overlays/MarqueeContainer.cs
+++ b/osu.Game/Overlays/MarqueeContainer.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Layout;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/MedalAnimation.cs b/osu.Game/Overlays/MedalAnimation.cs
index 0354a426446b..7365c3efe08a 100644
--- a/osu.Game/Overlays/MedalAnimation.cs
+++ b/osu.Game/Overlays/MedalAnimation.cs
@@ -19,8 +19,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Overlays.MedalSplash;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -57,7 +56,7 @@ public MedalAnimation(Medal medal)
                     background = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black.Opacity(60),
+                        Colour = Colour4.Black.Opacity(60),
                     },
                     outerSpin = new Sprite
                     {
@@ -117,7 +116,7 @@ public MedalAnimation(Medal medal)
                         Alpha = 0f,
                         Masking = true,
                         AlwaysPresent = true,
-                        BorderColour = Color4.White,
+                        BorderColour = Colour4.White,
                         BorderThickness = border_width,
                         Size = new Vector2(DISC_SIZE),
                         Scale = new Vector2(0.8f),
@@ -195,7 +194,7 @@ private void startAnimation()
         {
             content.Show();
 
-            background.FlashColour(Color4.White.Opacity(0.25f), 400);
+            background.FlashColour(Colour4.White.Opacity(0.25f), 400);
 
             getSample?.Play();
 
@@ -266,7 +265,7 @@ public BackgroundStrip(float start, float end)
             {
                 RelativeSizeAxes = Axes.Both;
                 Width = 0f;
-                Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(start), Color4.White.Opacity(end));
+                Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(start), Colour4.White.Opacity(end));
                 Masking = true;
 
                 Children = new[]
@@ -274,7 +273,7 @@ public BackgroundStrip(float start, float end)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                     }
                 };
             }
diff --git a/osu.Game/Overlays/MedalSplash/DrawableMedal.cs b/osu.Game/Overlays/MedalSplash/DrawableMedal.cs
index 977f41798f98..9439f01f5c9c 100644
--- a/osu.Game/Overlays/MedalSplash/DrawableMedal.cs
+++ b/osu.Game/Overlays/MedalSplash/DrawableMedal.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.MedalSplash
 {
diff --git a/osu.Game/Overlays/Mods/AddPresetButton.cs b/osu.Game/Overlays/Mods/AddPresetButton.cs
index 0844291f91df..00c8eade8153 100644
--- a/osu.Game/Overlays/Mods/AddPresetButton.cs
+++ b/osu.Game/Overlays/Mods/AddPresetButton.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/AddPresetPopover.cs b/osu.Game/Overlays/Mods/AddPresetPopover.cs
index 831f03f78c57..a2347248651f 100644
--- a/osu.Game/Overlays/Mods/AddPresetPopover.cs
+++ b/osu.Game/Overlays/Mods/AddPresetPopover.cs
@@ -17,7 +17,7 @@
 using osu.Game.Localisation;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/BeatmapAttributeTooltip.cs b/osu.Game/Overlays/Mods/BeatmapAttributeTooltip.cs
index 5bd4ed3dbc78..d1be2568d2cc 100644
--- a/osu.Game/Overlays/Mods/BeatmapAttributeTooltip.cs
+++ b/osu.Game/Overlays/Mods/BeatmapAttributeTooltip.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Difficulty;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/EditPresetPopover.cs b/osu.Game/Overlays/Mods/EditPresetPopover.cs
index 820ffad26551..353b3ee1348a 100644
--- a/osu.Game/Overlays/Mods/EditPresetPopover.cs
+++ b/osu.Game/Overlays/Mods/EditPresetPopover.cs
@@ -18,7 +18,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/IncompatibilityDisplayingTooltip.cs b/osu.Game/Overlays/Mods/IncompatibilityDisplayingTooltip.cs
index 3ac541eaa323..55116b1d14e2 100644
--- a/osu.Game/Overlays/Mods/IncompatibilityDisplayingTooltip.cs
+++ b/osu.Game/Overlays/Mods/IncompatibilityDisplayingTooltip.cs
@@ -11,7 +11,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/Input/ClassicModHotkeyHandler.cs b/osu.Game/Overlays/Mods/Input/ClassicModHotkeyHandler.cs
index 8cb9de184931..fe59ccdd23eb 100644
--- a/osu.Game/Overlays/Mods/Input/ClassicModHotkeyHandler.cs
+++ b/osu.Game/Overlays/Mods/Input/ClassicModHotkeyHandler.cs
@@ -7,7 +7,7 @@
 using System.Linq;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mods;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Mods.Input
 {
diff --git a/osu.Game/Overlays/Mods/Input/SequentialModHotkeyHandler.cs b/osu.Game/Overlays/Mods/Input/SequentialModHotkeyHandler.cs
index 42e65c884e39..2964b93c7a69 100644
--- a/osu.Game/Overlays/Mods/Input/SequentialModHotkeyHandler.cs
+++ b/osu.Game/Overlays/Mods/Input/SequentialModHotkeyHandler.cs
@@ -6,7 +6,7 @@
 using System.Linq;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mods;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Mods.Input
 {
diff --git a/osu.Game/Overlays/Mods/ModButtonTooltip.cs b/osu.Game/Overlays/Mods/ModButtonTooltip.cs
index 061c3e3e3a81..671162e67c79 100644
--- a/osu.Game/Overlays/Mods/ModButtonTooltip.cs
+++ b/osu.Game/Overlays/Mods/ModButtonTooltip.cs
@@ -8,7 +8,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Mods;
-using osuTK;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -68,6 +67,6 @@ protected virtual void UpdateDisplay(Mod mod)
             descriptionText.Text = mod.Description;
         }
 
-        public void Move(Vector2 pos) => Position = pos;
+        public void Move(System.Numerics.Vector2 pos) => Position = pos;
     }
 }
diff --git a/osu.Game/Overlays/Mods/ModColumn.cs b/osu.Game/Overlays/Mods/ModColumn.cs
index ae98a442f844..a31b29caaabc 100644
--- a/osu.Game/Overlays/Mods/ModColumn.cs
+++ b/osu.Game/Overlays/Mods/ModColumn.cs
@@ -10,7 +10,6 @@
 using Humanizer;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
@@ -20,8 +19,7 @@
 using osu.Game.Localisation;
 using osu.Game.Overlays.Mods.Input;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -257,9 +255,9 @@ public void FlushPendingSelections()
 
         private partial class ToggleAllCheckbox : OsuCheckbox
         {
-            private Color4 accentColour;
+            private Colour4 accentColour;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => accentColour;
                 set
@@ -269,9 +267,9 @@ public Color4 AccentColour
                 }
             }
 
-            private Color4 accentHoverColour;
+            private Colour4 accentHoverColour;
 
-            public Color4 AccentHoverColour
+            public Colour4 AccentHoverColour
             {
                 get => accentHoverColour;
                 set
diff --git a/osu.Game/Overlays/Mods/ModCustomisationHeader.cs b/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
index 54fbd37dbe62..4af53b9e22b2 100644
--- a/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
+++ b/osu.Game/Overlays/Mods/ModCustomisationHeader.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -13,8 +12,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using static osu.Game.Overlays.Mods.ModCustomisationPanel;
 
 namespace osu.Game.Overlays.Mods
@@ -61,7 +59,7 @@ private void load()
                 backgroundFlash = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.White.Opacity(0.4f),
+                    Colour = Colour4.White.Opacity(0.4f),
                     Blending = BlendingParameters.Additive,
                     Alpha = 0,
                 },
diff --git a/osu.Game/Overlays/Mods/ModCustomisationPanel.cs b/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
index aaed44486933..0e1f4ba6731d 100644
--- a/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
+++ b/osu.Game/Overlays/Mods/ModCustomisationPanel.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -19,8 +18,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -79,7 +77,7 @@ private void load()
                         Offset = new Vector2(0f, 5f),
                         Radius = 20f,
                         Roundness = 5f,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                     },
                     ExpandedState = { BindTarget = ExpandedState },
                     Children = new Drawable[]
diff --git a/osu.Game/Overlays/Mods/ModCustomisationSection.cs b/osu.Game/Overlays/Mods/ModCustomisationSection.cs
index 1dc97a8b0b3d..0b8a6e85b779 100644
--- a/osu.Game/Overlays/Mods/ModCustomisationSection.cs
+++ b/osu.Game/Overlays/Mods/ModCustomisationSection.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/ModFooterInformationDisplay.cs b/osu.Game/Overlays/Mods/ModFooterInformationDisplay.cs
index db42200775ec..cd99a604c7e6 100644
--- a/osu.Game/Overlays/Mods/ModFooterInformationDisplay.cs
+++ b/osu.Game/Overlays/Mods/ModFooterInformationDisplay.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -100,7 +99,7 @@ protected override void LoadComplete()
 
             MainBackground.Colour = ColourProvider.Background4;
             FrontBackground.Colour = ColourProvider.Background3;
-            Color4 glowColour = ColourProvider.Background1;
+            Colour4 glowColour = ColourProvider.Background1;
 
             Content.BorderColour = ColourInfo.GradientVertical(MainBackground.Colour, glowColour);
             innerContent.BorderColour = ColourInfo.GradientVertical(FrontBackground.Colour, glowColour);
diff --git a/osu.Game/Overlays/Mods/ModPanel.cs b/osu.Game/Overlays/Mods/ModPanel.cs
index df72692f48e1..edbf51167b82 100644
--- a/osu.Game/Overlays/Mods/ModPanel.cs
+++ b/osu.Game/Overlays/Mods/ModPanel.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/ModPresetColumn.cs b/osu.Game/Overlays/Mods/ModPresetColumn.cs
index 68c802ec4fb3..01cdd627aef1 100644
--- a/osu.Game/Overlays/Mods/ModPresetColumn.cs
+++ b/osu.Game/Overlays/Mods/ModPresetColumn.cs
@@ -15,8 +15,8 @@
 using osu.Game.Localisation;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 using Realms;
 
 namespace osu.Game.Overlays.Mods
diff --git a/osu.Game/Overlays/Mods/ModPresetRow.cs b/osu.Game/Overlays/Mods/ModPresetRow.cs
index 408c541bf5a2..0e2fa8606feb 100644
--- a/osu.Game/Overlays/Mods/ModPresetRow.cs
+++ b/osu.Game/Overlays/Mods/ModPresetRow.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/ModPresetTooltip.cs b/osu.Game/Overlays/Mods/ModPresetTooltip.cs
index 4464ba22f178..dd9c2b032fb7 100644
--- a/osu.Game/Overlays/Mods/ModPresetTooltip.cs
+++ b/osu.Game/Overlays/Mods/ModPresetTooltip.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/ModSelectColumn.cs b/osu.Game/Overlays/Mods/ModSelectColumn.cs
index 9acdf1699309..7ed3fc0f4f9a 100644
--- a/osu.Game/Overlays/Mods/ModSelectColumn.cs
+++ b/osu.Game/Overlays/Mods/ModSelectColumn.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -28,7 +27,7 @@ public LocalisableString HeaderText
             set => createHeaderText(value);
         }
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => headerBackground.Colour;
             set
diff --git a/osu.Game/Overlays/Mods/ModSelectFooterContent.cs b/osu.Game/Overlays/Mods/ModSelectFooterContent.cs
index cab8b1b31523..052506e9b47e 100644
--- a/osu.Game/Overlays/Mods/ModSelectFooterContent.cs
+++ b/osu.Game/Overlays/Mods/ModSelectFooterContent.cs
@@ -11,7 +11,7 @@
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
diff --git a/osu.Game/Overlays/Mods/ModSelectOverlay.cs b/osu.Game/Overlays/Mods/ModSelectOverlay.cs
index 59ea9b724b0e..fbf48dea50f6 100644
--- a/osu.Game/Overlays/Mods/ModSelectOverlay.cs
+++ b/osu.Game/Overlays/Mods/ModSelectOverlay.cs
@@ -29,9 +29,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Footer;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -427,8 +425,8 @@ private void updateCustomisationVisualState()
             }
             else
             {
-                columnScroll.FadeColour(Color4.White, 400, Easing.OutQuint);
-                SearchTextBox.FadeColour(Color4.White, 400, Easing.OutQuint);
+                columnScroll.FadeColour(Colour4.White, 400, Easing.OutQuint);
+                SearchTextBox.FadeColour(Colour4.White, 400, Easing.OutQuint);
                 setTextBoxFocus(textSearchStartsActive.Value);
             }
         }
diff --git a/osu.Game/Overlays/Mods/ModSelectPanel.cs b/osu.Game/Overlays/Mods/ModSelectPanel.cs
index 5cf858fc1dd7..9984bc96427e 100644
--- a/osu.Game/Overlays/Mods/ModSelectPanel.cs
+++ b/osu.Game/Overlays/Mods/ModSelectPanel.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -20,8 +19,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -29,7 +27,7 @@ public abstract partial class ModSelectPanel : OsuClickableContainer, IHasAccent
     {
         public abstract BindableBool Active { get; }
 
-        public Color4 AccentColour { get; set; }
+        public Colour4 AccentColour { get; set; }
 
         public LocalisableString Title
         {
diff --git a/osu.Game/Overlays/Mods/ShearedOverlayContainer.cs b/osu.Game/Overlays/Mods/ShearedOverlayContainer.cs
index dfa49f377900..7044402a0bb5 100644
--- a/osu.Game/Overlays/Mods/ShearedOverlayContainer.cs
+++ b/osu.Game/Overlays/Mods/ShearedOverlayContainer.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
diff --git a/osu.Game/Overlays/Mods/VerticalAttributeDisplay.cs b/osu.Game/Overlays/Mods/VerticalAttributeDisplay.cs
index 977da67e318b..18f833fa43e8 100644
--- a/osu.Game/Overlays/Mods/VerticalAttributeDisplay.cs
+++ b/osu.Game/Overlays/Mods/VerticalAttributeDisplay.cs
@@ -15,7 +15,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -99,12 +98,12 @@ private static ModEffect calculateEffect(double oldValue, double newValue)
 
         private void updateTextColor(ModEffect effect)
         {
-            Color4 newColor;
+            Colour4 newColor;
 
             switch (effect)
             {
                 case ModEffect.NotChanged:
-                    newColor = Color4.White;
+                    newColor = Colour4.White;
                     break;
 
                 case ModEffect.DifficultyReduction:
diff --git a/osu.Game/Overlays/Music/PlaylistItem.cs b/osu.Game/Overlays/Music/PlaylistItem.cs
index 5cbde6ba57db..3a264f7af113 100644
--- a/osu.Game/Overlays/Music/PlaylistItem.cs
+++ b/osu.Game/Overlays/Music/PlaylistItem.cs
@@ -14,7 +14,6 @@
 using osu.Game.Database;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Music
 {
@@ -104,7 +103,7 @@ private void updateSelectionState(ValueChangedEvent<Live<BeatmapSetInfo>?> selec
             if (wasSelected == this.selected)
                 return;
 
-            text.FadeColour(this.selected == true ? colours.Yellow : Color4.White, 100);
+            text.FadeColour(this.selected == true ? colours.Yellow : Colour4.White, 100);
         }
 
         protected override bool OnClick(ClickEvent e)
diff --git a/osu.Game/Overlays/Music/PlaylistOverlay.cs b/osu.Game/Overlays/Music/PlaylistOverlay.cs
index 99ae88701a07..7940df5995ad 100644
--- a/osu.Game/Overlays/Music/PlaylistOverlay.cs
+++ b/osu.Game/Overlays/Music/PlaylistOverlay.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -13,8 +12,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Database;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Overlays.Music
@@ -56,7 +54,7 @@ private void load(OsuColour colours, Bindable<WorkingBeatmap> beatmap)
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(40),
+                        Colour = Colour4.Black.Opacity(40),
                         Radius = 5,
                     },
                     Children = new Drawable[]
diff --git a/osu.Game/Overlays/News/Displays/ArticleListing.cs b/osu.Game/Overlays/News/Displays/ArticleListing.cs
index 4fc9dde156e8..64abb9a651b2 100644
--- a/osu.Game/Overlays/News/Displays/ArticleListing.cs
+++ b/osu.Game/Overlays/News/Displays/ArticleListing.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.News.Displays
 {
diff --git a/osu.Game/Overlays/News/NewsCard.cs b/osu.Game/Overlays/News/NewsCard.cs
index 863e0db64863..181e4593d5bf 100644
--- a/osu.Game/Overlays/News/NewsCard.cs
+++ b/osu.Game/Overlays/News/NewsCard.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
diff --git a/osu.Game/Overlays/News/Sidebar/MonthSection.cs b/osu.Game/Overlays/News/Sidebar/MonthSection.cs
index 86667019fc01..05d66f84814d 100644
--- a/osu.Game/Overlays/News/Sidebar/MonthSection.cs
+++ b/osu.Game/Overlays/News/Sidebar/MonthSection.cs
@@ -20,7 +20,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.News.Sidebar
 {
diff --git a/osu.Game/Overlays/News/Sidebar/NewsSidebar.cs b/osu.Game/Overlays/News/Sidebar/NewsSidebar.cs
index c59041caf585..a525a9e93ed8 100644
--- a/osu.Game/Overlays/News/Sidebar/NewsSidebar.cs
+++ b/osu.Game/Overlays/News/Sidebar/NewsSidebar.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.News.Sidebar
 {
diff --git a/osu.Game/Overlays/News/Sidebar/YearsPanel.cs b/osu.Game/Overlays/News/Sidebar/YearsPanel.cs
index 524ffbf63d98..68f44e370db6 100644
--- a/osu.Game/Overlays/News/Sidebar/YearsPanel.cs
+++ b/osu.Game/Overlays/News/Sidebar/YearsPanel.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.News.Sidebar
 {
@@ -109,8 +108,8 @@ public YearButton(int year, bool isCurrent)
             [BackgroundDependencyLoader]
             private void load(OverlayColourProvider colourProvider)
             {
-                IdleColour = isCurrent ? Color4.White : colourProvider.Light2;
-                HoverColour = isCurrent ? Color4.White : colourProvider.Light1;
+                IdleColour = isCurrent ? Colour4.White : colourProvider.Light2;
+                HoverColour = isCurrent ? Colour4.White : colourProvider.Light1;
                 Action = () =>
                 {
                     if (!isCurrent)
diff --git a/osu.Game/Overlays/NotificationOverlay.cs b/osu.Game/Overlays/NotificationOverlay.cs
index 78b1df420cb6..fef90f2c51d3 100644
--- a/osu.Game/Overlays/NotificationOverlay.cs
+++ b/osu.Game/Overlays/NotificationOverlay.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -20,8 +19,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
 using NotificationsStrings = osu.Game.Localisation.NotificationsStrings;
 
 namespace osu.Game.Overlays
@@ -52,7 +49,7 @@ public partial class NotificationOverlay : OsuFocusedOverlayContainer, INamedOve
         [Cached]
         private OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Purple);
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos)
         {
             if (State.Value == Visibility.Visible)
                 return base.ReceivePositionalInputAt(screenSpacePos);
@@ -89,7 +86,7 @@ private void load()
                     Masking = true,
                     EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = Color4.Black.Opacity(0),
+                        Colour = Colour4.Black.Opacity(0),
                         Type = EdgeEffectType.Shadow,
                         Radius = 10,
                         Hollow = true,
diff --git a/osu.Game/Overlays/NotificationOverlayToastTray.cs b/osu.Game/Overlays/NotificationOverlayToastTray.cs
index e66b999540a9..1adc82ca7509 100644
--- a/osu.Game/Overlays/NotificationOverlayToastTray.cs
+++ b/osu.Game/Overlays/NotificationOverlayToastTray.cs
@@ -6,7 +6,6 @@
 using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -15,7 +14,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
 using osu.Game.Overlays.Notifications;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/Notifications/Notification.cs b/osu.Game/Overlays/Notifications/Notification.cs
index c1ba64554d2d..5a65a295505b 100644
--- a/osu.Game/Overlays/Notifications/Notification.cs
+++ b/osu.Game/Overlays/Notifications/Notification.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -17,9 +16,8 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Notifications
 {
@@ -198,7 +196,7 @@ protected Notification()
                         },
                         initialFlash = new Box
                         {
-                            Colour = Color4.White.Opacity(0.8f),
+                            Colour = Colour4.White.Opacity(0.8f),
                             RelativeSizeAxes = Axes.Both,
                             Blending = BlendingParameters.Additive,
                         },
@@ -318,7 +316,7 @@ protected override void OnDrag(DragEvent e)
                 Vector2 change = e.MousePosition - e.MouseDownPosition;
 
                 // Diminish the drag distance as we go further to simulate "rubber band" feeling.
-                change *= change.Length <= 0 ? 0 : MathF.Pow(change.Length, 0.8f) / change.Length;
+                change *= change.Length() <= 0 ? 0 : MathF.Pow(change.Length(), 0.8f) / change.Length();
 
                 // Only apply Y change if dragging to the left.
                 if (change.X >= 0)
@@ -483,7 +481,7 @@ public bool Pulsate
                     base.Colour = value;
                     pulsateLayer.EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = ((Color4)value).Opacity(0.18f),
+                        Colour = ((Colour4)value).Opacity(0.18f),
                         Type = EdgeEffectType.Glow,
                         Radius = 14,
                     };
diff --git a/osu.Game/Overlays/Notifications/NotificationSection.cs b/osu.Game/Overlays/Notifications/NotificationSection.cs
index 895f13ee9c39..b1cd89961219 100644
--- a/osu.Game/Overlays/Notifications/NotificationSection.cs
+++ b/osu.Game/Overlays/Notifications/NotificationSection.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Notifications
 {
diff --git a/osu.Game/Overlays/Notifications/ProgressNotification.cs b/osu.Game/Overlays/Notifications/ProgressNotification.cs
index bdb85ba16887..44bf4469581f 100644
--- a/osu.Game/Overlays/Notifications/ProgressNotification.cs
+++ b/osu.Game/Overlays/Notifications/ProgressNotification.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Notifications
 {
@@ -49,15 +47,13 @@ public partial class ProgressNotification : Notification, IHasCompletionTarget
         /// </summary>
         public Func<bool>? CompletionClickAction { get; set; }
 
-        private LocalisableString text;
-
         public override LocalisableString Text
         {
-            get => text;
+            get;
             set
             {
-                text = value;
-                Scheduler.AddOnce(t => textDrawable.Text = t, text);
+                field = value;
+                Scheduler.AddOnce(t => textDrawable.Text = t, field);
             }
         }
 
@@ -131,7 +127,7 @@ private void updateState()
                 case ProgressNotificationState.Cancelled:
                     cancellationTokenSource.Cancel();
 
-                    IconContent.FadeColour(ColourInfo.GradientVertical(Color4.Gray, Color4.Gray.Lighten(0.5f)), colour_fade_duration);
+                    IconContent.FadeColour(ColourInfo.GradientVertical(Colour4.Gray, Colour4.Gray.Lighten(0.5f)), colour_fade_duration);
                     cancelSample?.Play();
                     loadingSpinner.Hide();
 
@@ -191,9 +187,9 @@ private void attemptPostCompletion()
         public override bool DisplayOnTop => false;
 
         private readonly ProgressBar progressBar;
-        private Color4 colourQueued;
-        private Color4 colourActive;
-        private Color4 colourCancelled;
+        private Colour4 colourQueued;
+        private Colour4 colourActive;
+        private Colour4 colourCancelled;
 
         private LoadingSpinner loadingSpinner = null!;
 
@@ -280,8 +276,8 @@ private partial class ProgressBar : Container
         {
             private readonly Box box;
 
-            private Color4 colourActive;
-            private Color4 colourInactive;
+            private Colour4 colourActive;
+            private Colour4 colourInactive;
 
             public float Progress
             {
diff --git a/osu.Game/Overlays/Notifications/SimpleNotification.cs b/osu.Game/Overlays/Notifications/SimpleNotification.cs
index 72bb5d7a5244..4a768a9e367a 100644
--- a/osu.Game/Overlays/Notifications/SimpleNotification.cs
+++ b/osu.Game/Overlays/Notifications/SimpleNotification.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Notifications
 {
diff --git a/osu.Game/Overlays/NowPlayingOverlay.cs b/osu.Game/Overlays/NowPlayingOverlay.cs
index 96585202516c..b787f8ae2665 100644
--- a/osu.Game/Overlays/NowPlayingOverlay.cs
+++ b/osu.Game/Overlays/NowPlayingOverlay.cs
@@ -5,7 +5,6 @@
 using System.Threading;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -22,8 +21,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays.Music;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -103,7 +101,7 @@ private void load()
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(40),
+                                Colour = Colour4.Black.Opacity(40),
                                 Radius = 5,
                             },
                             Children = new[]
@@ -114,7 +112,7 @@ private void load()
                                     Origin = Anchor.BottomCentre,
                                     Anchor = Anchor.TopCentre,
                                     Position = new Vector2(0, 40),
-                                    Colour = Color4.White,
+                                    Colour = Colour4.White,
                                     CreateContent = () => new OsuSpriteText
                                     {
                                         Font = title_font,
@@ -130,7 +128,7 @@ private void load()
                                     Origin = Anchor.TopCentre,
                                     Anchor = Anchor.TopCentre,
                                     Position = new Vector2(0, 45),
-                                    Colour = Color4.White,
+                                    Colour = Colour4.White,
                                     CreateContent = () => new OsuSpriteText
                                     {
                                         Font = artist_font,
@@ -258,7 +256,7 @@ private void togglePlaylist()
                 {
                     playlistContainer.Add(playlist);
 
-                    playlist.State.BindValueChanged(s => playlistButton.FadeColour(s.NewValue == Visibility.Visible ? colours.Yellow : Color4.White, 200, Easing.OutQuint), true);
+                    playlist.State.BindValueChanged(s => playlistButton.FadeColour(s.NewValue == Visibility.Visible ? colours.Yellow : Colour4.White, 200, Easing.OutQuint), true);
 
                     togglePlaylist();
                 });
@@ -280,7 +278,7 @@ protected override void LoadComplete()
             allowTrackControl.BindValueChanged(_ => Scheduler.AddOnce(updateEnabledStates), true);
 
             shuffle.BindTo(musicController.Shuffle);
-            shuffle.BindValueChanged(s => shuffleButton.FadeColour(s.NewValue ? colours.Yellow : Color4.White, 200, Easing.OutQuint), true);
+            shuffle.BindValueChanged(s => shuffleButton.FadeColour(s.NewValue ? colours.Yellow : Colour4.White, 200, Easing.OutQuint), true);
 
             musicController.TrackChanged += trackChanged;
             trackChanged(beatmap.Value);
@@ -486,7 +484,7 @@ public Background(WorkingBeatmap beatmap)
                         Height = bottom_black_area_height,
                         Origin = Anchor.BottomCentre,
                         Anchor = Anchor.BottomCentre,
-                        Colour = Color4.Black.Opacity(0.5f)
+                        Colour = Colour4.Black.Opacity(0.5f)
                     }
                 };
             }
@@ -510,7 +508,7 @@ protected override void OnDrag(DragEvent e)
                 Vector2 change = e.MousePosition - e.MouseDownPosition;
 
                 // Diminish the drag distance as we go further to simulate "rubber band" feeling.
-                change *= change.Length <= 0 ? 0 : MathF.Pow(change.Length, 0.7f) / change.Length;
+                change *= change.Length() <= 0 ? 0 : MathF.Pow(change.Length(), 0.7f) / change.Length();
 
                 this.MoveTo(change);
             }
diff --git a/osu.Game/Overlays/OSD/Toast.cs b/osu.Game/Overlays/OSD/Toast.cs
index a809c37800b6..b1b497b38087 100644
--- a/osu.Game/Overlays/OSD/Toast.cs
+++ b/osu.Game/Overlays/OSD/Toast.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.OSD
 {
@@ -53,7 +52,7 @@ protected Toast(LocalisableString description, LocalisableString value)
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.7f
                 },
                 content = new Container
diff --git a/osu.Game/Overlays/OSD/TrackedSettingToast.cs b/osu.Game/Overlays/OSD/TrackedSettingToast.cs
index 73fed25b1a8c..633ac8d6d8d0 100644
--- a/osu.Game/Overlays/OSD/TrackedSettingToast.cs
+++ b/osu.Game/Overlays/OSD/TrackedSettingToast.cs
@@ -9,15 +9,13 @@
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Configuration.Tracking;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Configuration;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.OSD
 {
@@ -133,7 +131,7 @@ private void load(AudioManager audio)
 
         private partial class OptionLight : Container
         {
-            private Color4 glowingColour, idleColour;
+            private Colour4 glowingColour, idleColour;
 
             private const float transition_speed = 300;
 
@@ -169,8 +167,8 @@ public bool Glowing
             [BackgroundDependencyLoader]
             private void load(OsuColour colours)
             {
-                fill.Colour = idleColour = Color4.White.Opacity(0.4f);
-                glowingColour = Color4.White;
+                fill.Colour = idleColour = Colour4.White.Opacity(0.4f);
+                glowingColour = Colour4.White;
 
                 Size = new Vector2(25, 5);
 
diff --git a/osu.Game/Overlays/OnScreenDisplay.cs b/osu.Game/Overlays/OnScreenDisplay.cs
index c2ffb8ba6c6d..aaadff4c6a25 100644
--- a/osu.Game/Overlays/OnScreenDisplay.cs
+++ b/osu.Game/Overlays/OnScreenDisplay.cs
@@ -15,7 +15,7 @@
 using osu.Framework.Graphics.Transforms;
 using osu.Framework.Threading;
 using osu.Game.Overlays.OSD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/OverlayColourProvider.cs b/osu.Game/Overlays/OverlayColourProvider.cs
index 9f5583cf73bc..5850717c3f55 100644
--- a/osu.Game/Overlays/OverlayColourProvider.cs
+++ b/osu.Game/Overlays/OverlayColourProvider.cs
@@ -1,7 +1,7 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -26,32 +26,32 @@ public OverlayColourProvider(int hue)
         // The difference as to which should be used where comes down to context.
         // If the colour in question is supposed to always match the view in which it is displayed theme-wise, use `OverlayColourProvider`.
         // If the colour usage is special and in general differs from the surrounding view in choice of hue, use the `OsuColour` constants.
-        public Color4 Colour0 => getColour(1, 0.8f);
-        public Color4 Colour1 => getColour(1, 0.7f);
-        public Color4 Colour2 => getColour(0.8f, 0.6f);
-        public Color4 Colour3 => getColour(0.6f, 0.5f);
-        public Color4 Colour4 => getColour(0.4f, 0.3f);
+        public Colour4 Colour0 => getColour(1, 0.8f);
+        public Colour4 Colour1 => getColour(1, 0.7f);
+        public Colour4 Colour2 => getColour(0.8f, 0.6f);
+        public Colour4 Colour3 => getColour(0.6f, 0.5f);
+        public Colour4 Colour4 => getColour(0.4f, 0.3f);
 
-        public Color4 Highlight1 => getColour(1, 0.7f);
-        public Color4 Content1 => getColour(0.4f, 1);
-        public Color4 Content2 => getColour(0.4f, 0.9f);
-        public Color4 Light1 => getColour(0.4f, 0.8f);
-        public Color4 Light2 => getColour(0.4f, 0.75f);
-        public Color4 Light3 => getColour(0.4f, 0.7f);
-        public Color4 Light4 => getColour(0.4f, 0.5f);
-        public Color4 Dark1 => getColour(0.2f, 0.35f);
-        public Color4 Dark2 => getColour(0.2f, 0.3f);
-        public Color4 Dark3 => getColour(0.2f, 0.25f);
-        public Color4 Dark4 => getColour(0.2f, 0.2f);
-        public Color4 Dark5 => getColour(0.2f, 0.15f);
-        public Color4 Dark6 => getColour(0.2f, 0.1f);
-        public Color4 Foreground1 => getColour(0.1f, 0.6f);
-        public Color4 Background1 => getColour(0.1f, 0.4f);
-        public Color4 Background2 => getColour(0.1f, 0.3f);
-        public Color4 Background3 => getColour(0.1f, 0.25f);
-        public Color4 Background4 => getColour(0.1f, 0.2f);
-        public Color4 Background5 => getColour(0.1f, 0.15f);
-        public Color4 Background6 => getColour(0.1f, 0.1f);
+        public Colour4 Highlight1 => getColour(1, 0.7f);
+        public Colour4 Content1 => getColour(0.4f, 1);
+        public Colour4 Content2 => getColour(0.4f, 0.9f);
+        public Colour4 Light1 => getColour(0.4f, 0.8f);
+        public Colour4 Light2 => getColour(0.4f, 0.75f);
+        public Colour4 Light3 => getColour(0.4f, 0.7f);
+        public Colour4 Light4 => getColour(0.4f, 0.5f);
+        public Colour4 Dark1 => getColour(0.2f, 0.35f);
+        public Colour4 Dark2 => getColour(0.2f, 0.3f);
+        public Colour4 Dark3 => getColour(0.2f, 0.25f);
+        public Colour4 Dark4 => getColour(0.2f, 0.2f);
+        public Colour4 Dark5 => getColour(0.2f, 0.15f);
+        public Colour4 Dark6 => getColour(0.2f, 0.1f);
+        public Colour4 Foreground1 => getColour(0.1f, 0.6f);
+        public Colour4 Background1 => getColour(0.1f, 0.4f);
+        public Colour4 Background2 => getColour(0.1f, 0.3f);
+        public Colour4 Background3 => getColour(0.1f, 0.25f);
+        public Colour4 Background4 => getColour(0.1f, 0.2f);
+        public Colour4 Background5 => getColour(0.1f, 0.15f);
+        public Colour4 Background6 => getColour(0.1f, 0.1f);
 
         /// <summary>
         /// Changes the <see cref="Hue"/> to a different degree.
@@ -67,6 +67,6 @@ public OverlayColourProvider(int hue)
         /// <param name="hue">The proposed hue degree.</param>
         public void ChangeColourScheme(int hue) => Hue = hue;
 
-        private Color4 getColour(float saturation, float lightness) => Framework.Graphics.Colour4.FromHSL(Hue / 360f, saturation, lightness);
+        private Colour4 getColour(float saturation, float lightness) => Colour4.FromHSL(Hue / 360f, saturation, lightness);
     }
 }
diff --git a/osu.Game/Overlays/OverlayHeader.cs b/osu.Game/Overlays/OverlayHeader.cs
index a1c6ec5abb22..e131f063e7fa 100644
--- a/osu.Game/Overlays/OverlayHeader.cs
+++ b/osu.Game/Overlays/OverlayHeader.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -64,7 +63,7 @@ protected OverlayHeader()
                                     titleBackground = new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = Color4.Gray,
+                                        Colour = Colour4.Gray,
                                     },
                                     content = new Container
                                     {
diff --git a/osu.Game/Overlays/OverlayPanelDisplayStyleControl.cs b/osu.Game/Overlays/OverlayPanelDisplayStyleControl.cs
index 301629be6a27..bb25d45eb829 100644
--- a/osu.Game/Overlays/OverlayPanelDisplayStyleControl.cs
+++ b/osu.Game/Overlays/OverlayPanelDisplayStyleControl.cs
@@ -16,8 +16,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -114,7 +113,7 @@ protected override void OnHoverLost(HoverLostEvent e)
                 base.OnHoverLost(e);
             }
 
-            private void updateState() => icon.Colour = Active.Value || IsHovered ? colourProvider.Light1 : Color4.White;
+            private void updateState() => icon.Colour = Active.Value || IsHovered ? colourProvider.Light1 : Colour4.White;
         }
     }
 
diff --git a/osu.Game/Overlays/OverlayRulesetSelector.cs b/osu.Game/Overlays/OverlayRulesetSelector.cs
index e10bcda73455..f8c3dd9ff8b6 100644
--- a/osu.Game/Overlays/OverlayRulesetSelector.cs
+++ b/osu.Game/Overlays/OverlayRulesetSelector.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/OverlayRulesetTabItem.cs b/osu.Game/Overlays/OverlayRulesetTabItem.cs
index 1e069ea27b6f..864f35a4c1fc 100644
--- a/osu.Game/Overlays/OverlayRulesetTabItem.cs
+++ b/osu.Game/Overlays/OverlayRulesetTabItem.cs
@@ -13,21 +13,18 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
     public partial class OverlayRulesetTabItem : TabItem<RulesetInfo>, IHasTooltip
     {
-        private Color4 accentColour;
-
-        protected virtual Color4 AccentColour
+        protected virtual Colour4 AccentColour
         {
-            get => accentColour;
+            get;
             set
             {
-                accentColour = value;
+                field = value;
                 icon.FadeColour(value, 120, Easing.OutQuint);
             }
         }
@@ -107,6 +104,6 @@ private void updateState()
             AccentColour = Enabled.Value ? getActiveColour() : colourProvider.Foreground1;
         }
 
-        private Color4 getActiveColour() => IsHovered || Active.Value ? Color4.White : colourProvider.Highlight1;
+        private Colour4 getActiveColour() => IsHovered || Active.Value ? Colour4.White : colourProvider.Highlight1;
     }
 }
diff --git a/osu.Game/Overlays/OverlayScrollContainer.cs b/osu.Game/Overlays/OverlayScrollContainer.cs
index ef9f7e44a726..b7d645253801 100644
--- a/osu.Game/Overlays/OverlayScrollContainer.cs
+++ b/osu.Game/Overlays/OverlayScrollContainer.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -20,8 +19,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -112,7 +110,7 @@ public Visibility State
 
             protected override IEnumerable<Drawable> EffectTargets => new[] { background };
 
-            private Color4 flashColour;
+            private Colour4 flashColour;
 
             private readonly Container content;
             private readonly Box background;
@@ -145,7 +143,7 @@ public ScrollBackButton()
                         Type = EdgeEffectType.Shadow,
                         Offset = new Vector2(0f, 1f),
                         Radius = 3f,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                     },
                     Children = new Drawable[]
                     {
diff --git a/osu.Game/Overlays/OverlaySortTabControl.cs b/osu.Game/Overlays/OverlaySortTabControl.cs
index 0f768ba820fe..1f4e56bed992 100644
--- a/osu.Game/Overlays/OverlaySortTabControl.cs
+++ b/osu.Game/Overlays/OverlaySortTabControl.cs
@@ -19,8 +19,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Comments;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -123,7 +122,7 @@ public partial class TabButton : HeaderButton
 
             protected override Container<Drawable> Content => content;
 
-            protected virtual Color4 ContentColour
+            protected virtual Colour4 ContentColour
             {
                 set => text.Colour = value;
             }
@@ -177,7 +176,7 @@ protected virtual void UpdateState()
                 else
                     HideBackground();
 
-                ContentColour = Active.Value && !IsHovered ? colourProvider.Light1 : Color4.White;
+                ContentColour = Active.Value && !IsHovered ? colourProvider.Light1 : Colour4.White;
 
                 text.Font = text.Font.With(weight: Active.Value ? FontWeight.Bold : FontWeight.SemiBold);
             }
diff --git a/osu.Game/Overlays/OverlayStreamItem.cs b/osu.Game/Overlays/OverlayStreamItem.cs
index d4e52370b3ac..992adbe1df7e 100644
--- a/osu.Game/Overlays/OverlayStreamItem.cs
+++ b/osu.Game/Overlays/OverlayStreamItem.cs
@@ -14,7 +14,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -132,7 +131,7 @@ protected LocalisableString InfoText
             }
         }
 
-        protected abstract Color4 GetBarColour(OsuColour colours);
+        protected abstract Colour4 GetBarColour(OsuColour colours);
 
         protected override void OnActivated() => updateState();
 
diff --git a/osu.Game/Overlays/OverlayTabControl.cs b/osu.Game/Overlays/OverlayTabControl.cs
index a27caa13f1ac..9705a568cac7 100644
--- a/osu.Game/Overlays/OverlayTabControl.cs
+++ b/osu.Game/Overlays/OverlayTabControl.cs
@@ -13,8 +13,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -27,7 +26,7 @@ protected float BarHeight
             set => bar.Height = value;
         }
 
-        public override Color4 AccentColour
+        public override Colour4 AccentColour
         {
             get => base.AccentColour;
             set
@@ -65,17 +64,15 @@ protected partial class OverlayTabItem : TabItem<T>, IHasAccentColour
             protected readonly ExpandingBar Bar;
             protected readonly OsuSpriteText Text;
 
-            private Color4 accentColour;
-
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
-                get => accentColour;
+                get;
                 set
                 {
-                    if (accentColour == value)
+                    if (field == value)
                         return;
 
-                    accentColour = value;
+                    field = value;
                     Bar.Colour = value;
 
                     updateState();
@@ -137,7 +134,7 @@ protected override void OnActivated()
             {
                 HoverAction();
                 Text.Font = Text.Font.With(weight: FontWeight.Bold);
-                Text.FadeColour(Color4.White, 120, Easing.InQuad);
+                Text.FadeColour(Colour4.White, 120, Easing.InQuad);
             }
 
             protected override void OnDeactivated()
diff --git a/osu.Game/Overlays/OverlayTitle.cs b/osu.Game/Overlays/OverlayTitle.cs
index 99e383d2516e..d711a7a62bd5 100644
--- a/osu.Game/Overlays/OverlayTitle.cs
+++ b/osu.Game/Overlays/OverlayTitle.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/Profile/Header/BadgeHeaderContainer.cs b/osu.Game/Overlays/Profile/Header/BadgeHeaderContainer.cs
index af9ec32421cb..92fd1f17fb6f 100644
--- a/osu.Game/Overlays/Profile/Header/BadgeHeaderContainer.cs
+++ b/osu.Game/Overlays/Profile/Header/BadgeHeaderContainer.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header
 {
diff --git a/osu.Game/Overlays/Profile/Header/BottomHeaderContainer.cs b/osu.Game/Overlays/Profile/Header/BottomHeaderContainer.cs
index db93ec7e05a5..49a734cd687b 100644
--- a/osu.Game/Overlays/Profile/Header/BottomHeaderContainer.cs
+++ b/osu.Game/Overlays/Profile/Header/BottomHeaderContainer.cs
@@ -16,8 +16,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header
 {
@@ -28,7 +27,7 @@ public partial class BottomHeaderContainer : CompositeDrawable
         private LinkFlowContainer topLinkContainer = null!;
         private LinkFlowContainer bottomLinkContainer = null!;
 
-        private Color4 iconColour;
+        private Colour4 iconColour;
 
         [Resolved]
         private IAPIProvider api { get; set; } = null!;
diff --git a/osu.Game/Overlays/Profile/Header/CentreHeaderContainer.cs b/osu.Game/Overlays/Profile/Header/CentreHeaderContainer.cs
index 3f669ebfe30d..15729b055bc9 100644
--- a/osu.Game/Overlays/Profile/Header/CentreHeaderContainer.cs
+++ b/osu.Game/Overlays/Profile/Header/CentreHeaderContainer.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsDisplay.cs b/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsDisplay.cs
index 3e48366ae214..9ea854f0ff21 100644
--- a/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsDisplay.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsDisplay.cs
@@ -16,7 +16,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsTooltip.cs b/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsTooltip.cs
index fa4937bd1ff5..6202315e0ab0 100644
--- a/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsTooltip.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/DailyChallengeStatsTooltip.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -18,8 +17,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -46,7 +44,7 @@ private void load()
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.25f),
+                Colour = Colour4.Black.Opacity(0.25f),
                 Radius = 30f,
             };
 
diff --git a/osu.Game/Overlays/Profile/Header/Components/DrawableBadge.cs b/osu.Game/Overlays/Profile/Header/Components/DrawableBadge.cs
index 7e4c747ce86b..3d7283424fdc 100644
--- a/osu.Game/Overlays/Profile/Header/Components/DrawableBadge.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/DrawableBadge.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/ExtendedDetails.cs b/osu.Game/Overlays/Profile/Header/Components/ExtendedDetails.cs
index 777283485df4..91fe31ec214f 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ExtendedDetails.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ExtendedDetails.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/FollowersButton.cs b/osu.Game/Overlays/Profile/Header/Components/FollowersButton.cs
index 4ebedbf946cf..31db9bfca7e6 100644
--- a/osu.Game/Overlays/Profile/Header/Components/FollowersButton.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/FollowersButton.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
diff --git a/osu.Game/Overlays/Profile/Header/Components/GroupBadge.cs b/osu.Game/Overlays/Profile/Header/Components/GroupBadge.cs
index 4e17627e0404..1854450d282a 100644
--- a/osu.Game/Overlays/Profile/Header/Components/GroupBadge.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/GroupBadge.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Rulesets;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/GroupBadgeFlow.cs b/osu.Game/Overlays/Profile/Header/Components/GroupBadgeFlow.cs
index 33b3de94db48..5af8f11b9df1 100644
--- a/osu.Game/Overlays/Profile/Header/Components/GroupBadgeFlow.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/GroupBadgeFlow.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/LevelProgressBar.cs b/osu.Game/Overlays/Profile/Header/Components/LevelProgressBar.cs
index 919ccb0dd49d..f4c8f0ae4df1 100644
--- a/osu.Game/Overlays/Profile/Header/Components/LevelProgressBar.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/LevelProgressBar.cs
@@ -13,7 +13,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -43,7 +42,7 @@ private void load(OverlayColourProvider colourProvider)
                     Child = levelProgressBar = new Bar
                     {
                         RelativeSizeAxes = Axes.Both,
-                        BackgroundColour = Color4.Black,
+                        BackgroundColour = Colour4.Black,
                         Direction = BarDirection.LeftToRight,
                         AccentColour = colourProvider.Highlight1
                     }
diff --git a/osu.Game/Overlays/Profile/Header/Components/MainDetails.cs b/osu.Game/Overlays/Profile/Header/Components/MainDetails.cs
index e0bafa025518..0128d53faf99 100644
--- a/osu.Game/Overlays/Profile/Header/Components/MainDetails.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/MainDetails.cs
@@ -15,7 +15,7 @@
 using osu.Game.Online.Leaderboards;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/MatchmakingStatsTooltip.cs b/osu.Game/Overlays/Profile/Header/Components/MatchmakingStatsTooltip.cs
index 1725db888eec..fbf1e00bdc30 100644
--- a/osu.Game/Overlays/Profile/Header/Components/MatchmakingStatsTooltip.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/MatchmakingStatsTooltip.cs
@@ -4,7 +4,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -14,8 +13,6 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -33,7 +30,7 @@ public MatchmakingStatsTooltip()
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.25f),
+                Colour = Colour4.Black.Opacity(0.25f),
                 Radius = 30f,
             };
         }
@@ -85,7 +82,7 @@ private Drawable[] createRow(OverlayColourProvider colourProvider, APIUserMatchm
                 new StatisticText(colourProvider)
                 {
                     Text = stat.Pool.Name,
-                    Colour = Color4.White
+                    Colour = Colour4.White
                 },
                 new StatisticText(colourProvider) { Text = $"#{stat.Rank:N0}" },
                 new StatisticText(colourProvider) { Text = stat.FirstPlacements.ToString("N0") },
@@ -98,7 +95,7 @@ private Drawable[] createRow(OverlayColourProvider colourProvider, APIUserMatchm
 
         protected override void PopOut() => this.FadeOut(200, Easing.OutQuint);
 
-        public void Move(Vector2 pos) => Position = pos;
+        public void Move(System.Numerics.Vector2 pos) => Position = pos;
 
         private partial class MatchmakingStatsTooltipTable : TableContainer
         {
diff --git a/osu.Game/Overlays/Profile/Header/Components/MessageUserButton.cs b/osu.Game/Overlays/Profile/Header/Components/MessageUserButton.cs
index 5f934e3916b0..989b2a875754 100644
--- a/osu.Game/Overlays/Profile/Header/Components/MessageUserButton.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/MessageUserButton.cs
@@ -9,7 +9,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.Chat;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/PreviousUsernamesDisplay.cs b/osu.Game/Overlays/Profile/Header/Components/PreviousUsernamesDisplay.cs
index f286501e6e87..ee5cf0e3f894 100644
--- a/osu.Game/Overlays/Profile/Header/Components/PreviousUsernamesDisplay.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/PreviousUsernamesDisplay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/ProfileActionsButton.cs b/osu.Game/Overlays/Profile/Header/Components/ProfileActionsButton.cs
index ff6a279be2dc..7da01c1ae2b4 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ProfileActionsButton.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ProfileActionsButton.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/ProfileHeaderStatisticsButton.cs b/osu.Game/Overlays/Profile/Header/Components/ProfileHeaderStatisticsButton.cs
index 3c2e603da85b..cf2d439c1aa6 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ProfileHeaderStatisticsButton.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ProfileHeaderStatisticsButton.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/ProfilePopoverAction.cs b/osu.Game/Overlays/Profile/Header/Components/ProfilePopoverAction.cs
index 5dd8b8050260..2acbd1204bb1 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ProfilePopoverAction.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ProfilePopoverAction.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/Components/ProfileRulesetTabItem.cs b/osu.Game/Overlays/Profile/Header/Components/ProfileRulesetTabItem.cs
index fdfd22621e68..47a2136e3fc3 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ProfileRulesetTabItem.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ProfileRulesetTabItem.cs
@@ -7,8 +7,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -28,7 +27,7 @@ public bool IsDefault
             }
         }
 
-        protected override Color4 AccentColour
+        protected override Colour4 AccentColour
         {
             get => base.AccentColour;
             set
diff --git a/osu.Game/Overlays/Profile/Header/Components/ToggleCoverButton.cs b/osu.Game/Overlays/Profile/Header/Components/ToggleCoverButton.cs
index b2d024c1d798..a415e4aa161d 100644
--- a/osu.Game/Overlays/Profile/Header/Components/ToggleCoverButton.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/ToggleCoverButton.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
diff --git a/osu.Game/Overlays/Profile/Header/TopHeaderContainer.cs b/osu.Game/Overlays/Profile/Header/TopHeaderContainer.cs
index 67dce43f04bf..46e3849909d7 100644
--- a/osu.Game/Overlays/Profile/Header/TopHeaderContainer.cs
+++ b/osu.Game/Overlays/Profile/Header/TopHeaderContainer.cs
@@ -18,7 +18,7 @@
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Profile.Header
 {
diff --git a/osu.Game/Overlays/Profile/ProfileSection.cs b/osu.Game/Overlays/Profile/ProfileSection.cs
index a8a240ddde61..07efd1e4364c 100644
--- a/osu.Game/Overlays/Profile/ProfileSection.cs
+++ b/osu.Game/Overlays/Profile/ProfileSection.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Beatmaps/PaginatedBeatmapContainer.cs b/osu.Game/Overlays/Profile/Sections/Beatmaps/PaginatedBeatmapContainer.cs
index df657aa55b38..9a429c8451d0 100644
--- a/osu.Game/Overlays/Profile/Sections/Beatmaps/PaginatedBeatmapContainer.cs
+++ b/osu.Game/Overlays/Profile/Sections/Beatmaps/PaginatedBeatmapContainer.cs
@@ -10,7 +10,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Overlays.Profile.Sections.Beatmaps
diff --git a/osu.Game/Overlays/Profile/Sections/Historical/DrawableMostPlayedBeatmap.cs b/osu.Game/Overlays/Profile/Sections/Historical/DrawableMostPlayedBeatmap.cs
index 9d25ff53d81f..0076e15036f7 100644
--- a/osu.Game/Overlays/Profile/Sections/Historical/DrawableMostPlayedBeatmap.cs
+++ b/osu.Game/Overlays/Profile/Sections/Historical/DrawableMostPlayedBeatmap.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Historical
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Historical/ProfileLineChart.cs b/osu.Game/Overlays/Profile/Sections/Historical/ProfileLineChart.cs
index b3203538fa9d..e09c9556ec00 100644
--- a/osu.Game/Overlays/Profile/Sections/Historical/ProfileLineChart.cs
+++ b/osu.Game/Overlays/Profile/Sections/Historical/ProfileLineChart.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Historical
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Kudosu/DrawableKudosuHistoryItem.cs b/osu.Game/Overlays/Profile/Sections/Kudosu/DrawableKudosuHistoryItem.cs
index 0ada26439cec..1d76311c0ed3 100644
--- a/osu.Game/Overlays/Profile/Sections/Kudosu/DrawableKudosuHistoryItem.cs
+++ b/osu.Game/Overlays/Profile/Sections/Kudosu/DrawableKudosuHistoryItem.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Chat;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Kudosu
 {
diff --git a/osu.Game/Overlays/Profile/Sections/PaginatedProfileSubsection.cs b/osu.Game/Overlays/Profile/Sections/PaginatedProfileSubsection.cs
index de13b680275d..8e483c0785dd 100644
--- a/osu.Game/Overlays/Profile/Sections/PaginatedProfileSubsection.cs
+++ b/osu.Game/Overlays/Profile/Sections/PaginatedProfileSubsection.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections
 {
diff --git a/osu.Game/Overlays/Profile/Sections/ProfileItemContainer.cs b/osu.Game/Overlays/Profile/Sections/ProfileItemContainer.cs
index 5e1b650bd302..78d14b0a6fc5 100644
--- a/osu.Game/Overlays/Profile/Sections/ProfileItemContainer.cs
+++ b/osu.Game/Overlays/Profile/Sections/ProfileItemContainer.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Profile.Sections
 {
@@ -19,26 +18,22 @@ public partial class ProfileItemContainer : Container
         private readonly Box background;
         private readonly Container content;
 
-        private Color4 idleColour;
-
-        protected Color4 IdleColour
+        protected Colour4 IdleColour
         {
-            get => idleColour;
+            get;
             set
             {
-                idleColour = value;
+                field = value;
                 fadeBackgroundColour();
             }
         }
 
-        private Color4 hoverColour;
-
-        protected Color4 HoverColour
+        protected Colour4 HoverColour
         {
-            get => hoverColour;
+            get;
             set
             {
-                hoverColour = value;
+                field = value;
                 fadeBackgroundColour();
             }
         }
diff --git a/osu.Game/Overlays/Profile/Sections/ProfileSubsectionHeader.cs b/osu.Game/Overlays/Profile/Sections/ProfileSubsectionHeader.cs
index 2d38e317fc6c..9311c5dd4825 100644
--- a/osu.Game/Overlays/Profile/Sections/ProfileSubsectionHeader.cs
+++ b/osu.Game/Overlays/Profile/Sections/ProfileSubsectionHeader.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileScore.cs b/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileScore.cs
index 247faaeabfd8..c1de10c3f204 100644
--- a/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileScore.cs
+++ b/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileScore.cs
@@ -21,7 +21,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Ranks
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileWeightedScore.cs b/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileWeightedScore.cs
index 36b20d0be5d7..b7dcf3bd8955 100644
--- a/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileWeightedScore.cs
+++ b/osu.Game/Overlays/Profile/Sections/Ranks/DrawableProfileWeightedScore.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Ranks
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Recent/PaginatedRecentActivityContainer.cs b/osu.Game/Overlays/Profile/Sections/Recent/PaginatedRecentActivityContainer.cs
index 54d4f31c4b84..5d8bbdb7686f 100644
--- a/osu.Game/Overlays/Profile/Sections/Recent/PaginatedRecentActivityContainer.cs
+++ b/osu.Game/Overlays/Profile/Sections/Recent/PaginatedRecentActivityContainer.cs
@@ -9,7 +9,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile.Sections.Recent
 {
diff --git a/osu.Game/Overlays/Profile/Sections/Recent/RecentActivityIcon.cs b/osu.Game/Overlays/Profile/Sections/Recent/RecentActivityIcon.cs
index 23f9c9e1c260..755a6c3add12 100644
--- a/osu.Game/Overlays/Profile/Sections/Recent/RecentActivityIcon.cs
+++ b/osu.Game/Overlays/Profile/Sections/Recent/RecentActivityIcon.cs
@@ -9,7 +9,6 @@
 using osu.Game.Graphics;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Profile.Sections.Recent
 {
@@ -42,7 +41,7 @@ private void load()
             {
                 case RecentActivityType.BeatmapPlaycount:
                     icon.Icon = FontAwesome.Solid.Play;
-                    icon.Colour = Color4.White;
+                    icon.Colour = Colour4.White;
                     break;
 
                 case RecentActivityType.BeatmapsetApprove:
@@ -57,7 +56,7 @@ private void load()
 
                 case RecentActivityType.BeatmapsetRevive:
                     icon.Icon = FontAwesome.Solid.TrashRestore;
-                    icon.Colour = Color4.White;
+                    icon.Colour = Colour4.White;
                     break;
 
                 case RecentActivityType.BeatmapsetUpdate:
@@ -72,7 +71,7 @@ private void load()
 
                 case RecentActivityType.RankLost:
                     icon.Icon = FontAwesome.Solid.AngleDoubleDown;
-                    icon.Colour = Color4.White;
+                    icon.Colour = Colour4.White;
                     break;
 
                 case RecentActivityType.UserSupportAgain:
@@ -92,12 +91,12 @@ private void load()
 
                 case RecentActivityType.UsernameChange:
                     icon.Icon = FontAwesome.Solid.Tag;
-                    icon.Colour = Color4.White;
+                    icon.Colour = Colour4.White;
                     break;
             }
         }
 
-        private Color4 getColorForApprovalType(BeatmapApproval approvalType)
+        private Colour4 getColorForApprovalType(BeatmapApproval approvalType)
         {
             switch (approvalType)
             {
diff --git a/osu.Game/Overlays/Profile/UserGraph.cs b/osu.Game/Overlays/Profile/UserGraph.cs
index 0a5e6ca7103f..6580265abfd5 100644
--- a/osu.Game/Overlays/Profile/UserGraph.cs
+++ b/osu.Game/Overlays/Profile/UserGraph.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Profile
 {
diff --git a/osu.Game/Overlays/Rankings/CountryFilter.cs b/osu.Game/Overlays/Rankings/CountryFilter.cs
index c4e281402b9e..5c0050d890de 100644
--- a/osu.Game/Overlays/Rankings/CountryFilter.cs
+++ b/osu.Game/Overlays/Rankings/CountryFilter.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Rankings
 {
diff --git a/osu.Game/Overlays/Rankings/CountryPill.cs b/osu.Game/Overlays/Rankings/CountryPill.cs
index 294b6df34d5a..5a8edf38626c 100644
--- a/osu.Game/Overlays/Rankings/CountryPill.cs
+++ b/osu.Game/Overlays/Rankings/CountryPill.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Rankings
 {
@@ -158,7 +157,7 @@ public CloseButton()
             private void load(OverlayColourProvider colourProvider)
             {
                 IdleColour = colourProvider.Light2;
-                HoverColour = Color4.White;
+                HoverColour = Colour4.White;
             }
         }
     }
diff --git a/osu.Game/Overlays/Rankings/SpotlightSelector.cs b/osu.Game/Overlays/Rankings/SpotlightSelector.cs
index 8069aeeb7ce5..b5d2ab392335 100644
--- a/osu.Game/Overlays/Rankings/SpotlightSelector.cs
+++ b/osu.Game/Overlays/Rankings/SpotlightSelector.cs
@@ -7,7 +7,6 @@
 using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -20,7 +19,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Rankings
 {
diff --git a/osu.Game/Overlays/Rankings/SpotlightsLayout.cs b/osu.Game/Overlays/Rankings/SpotlightsLayout.cs
index 8a1b92975336..26bc3fd43292 100644
--- a/osu.Game/Overlays/Rankings/SpotlightsLayout.cs
+++ b/osu.Game/Overlays/Rankings/SpotlightsLayout.cs
@@ -17,7 +17,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Rankings.Tables;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Rankings
 {
diff --git a/osu.Game/Overlays/Rankings/Tables/RankingsTable.cs b/osu.Game/Overlays/Rankings/Tables/RankingsTable.cs
index 204c81b3ba38..07a34f2606f8 100644
--- a/osu.Game/Overlays/Rankings/Tables/RankingsTable.cs
+++ b/osu.Game/Overlays/Rankings/Tables/RankingsTable.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Rankings.Tables
 {
diff --git a/osu.Game/Overlays/Rankings/Tables/TableRowBackground.cs b/osu.Game/Overlays/Rankings/Tables/TableRowBackground.cs
index 8c50e7220750..7eea6a124ee6 100644
--- a/osu.Game/Overlays/Rankings/Tables/TableRowBackground.cs
+++ b/osu.Game/Overlays/Rankings/Tables/TableRowBackground.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Rankings.Tables
 {
@@ -16,8 +15,8 @@ public partial class TableRowBackground : CompositeDrawable
 
         private readonly Box background;
 
-        private Color4 idleColour;
-        private Color4 hoverColour;
+        private Colour4 idleColour;
+        private Colour4 hoverColour;
 
         public TableRowBackground()
         {
diff --git a/osu.Game/Overlays/Rankings/Tables/UserBasedTable.cs b/osu.Game/Overlays/Rankings/Tables/UserBasedTable.cs
index 5f4316a830a0..df8faf0b4ea2 100644
--- a/osu.Game/Overlays/Rankings/Tables/UserBasedTable.cs
+++ b/osu.Game/Overlays/Rankings/Tables/UserBasedTable.cs
@@ -15,7 +15,7 @@
 using osu.Game.Scoring;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Rankings.Tables
 {
diff --git a/osu.Game/Overlays/RevertToDefaultButton.cs b/osu.Game/Overlays/RevertToDefaultButton.cs
index 1ebe7b793462..0cc695a31fcc 100644
--- a/osu.Game/Overlays/RevertToDefaultButton.cs
+++ b/osu.Game/Overlays/RevertToDefaultButton.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Overlays/Settings/OutlinedTextBox.cs b/osu.Game/Overlays/Settings/OutlinedTextBox.cs
index ef2039f8bf9e..5ffa2007ab6d 100644
--- a/osu.Game/Overlays/Settings/OutlinedTextBox.cs
+++ b/osu.Game/Overlays/Settings/OutlinedTextBox.cs
@@ -2,11 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Overlays.Settings
 {
@@ -14,8 +13,8 @@ public partial class OutlinedTextBox : OsuTextBox
     {
         private const float border_thickness = 3;
 
-        private Color4 borderColourFocused;
-        private Color4 borderColourUnfocused;
+        private Colour4 borderColourFocused;
+        private Colour4 borderColourUnfocused;
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colour)
diff --git a/osu.Game/Overlays/Settings/Sections/Audio/AudioOffsetAdjustControl.cs b/osu.Game/Overlays/Settings/Sections/Audio/AudioOffsetAdjustControl.cs
index df9646d211ae..94d4092c8d11 100644
--- a/osu.Game/Overlays/Settings/Sections/Audio/AudioOffsetAdjustControl.cs
+++ b/osu.Game/Overlays/Settings/Sections/Audio/AudioOffsetAdjustControl.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Screens.Play.PlayerSettings;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Audio
 {
diff --git a/osu.Game/Overlays/Settings/Sections/General/QuickActionSettings.cs b/osu.Game/Overlays/Settings/Sections/General/QuickActionSettings.cs
index f6fe576dc227..aa44742b7d38 100644
--- a/osu.Game/Overlays/Settings/Sections/General/QuickActionSettings.cs
+++ b/osu.Game/Overlays/Settings/Sections/General/QuickActionSettings.cs
@@ -3,7 +3,6 @@
 
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Localisation;
 using osu.Framework.Logging;
diff --git a/osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs b/osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs
index 0fff33afdfe5..d9aaf2b1b3a4 100644
--- a/osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs
+++ b/osu.Game/Overlays/Settings/Sections/Graphics/LayoutSettings.cs
@@ -19,8 +19,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Graphics
 {
@@ -302,9 +301,9 @@ protected override void LoadComplete()
                 if (size.NewValue == sizeWindowed.Value || windowModeDropdown.Current.Value != WindowMode.Windowed)
                     return;
 
-                if (window?.WindowState == Framework.Platform.WindowState.Maximised)
+                if (window?.WindowState == WindowState.Maximised)
                 {
-                    window.WindowState = Framework.Platform.WindowState.Normal;
+                    window.WindowState = WindowState.Normal;
                 }
 
                 // Adjust only for top decorations (assuming system titlebar).
@@ -381,6 +380,7 @@ private void onDisplaysChanged(IEnumerable<Display> displays)
         private void updateRefreshRates()
         {
             var display = currentDisplay.Value;
+
             if (display == null)
             {
                 refreshRates.ReplaceRange(1, refreshRates.Count - 1, Array.Empty<double>());
@@ -493,7 +493,7 @@ public ScalingPreview()
             {
                 Child = new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0.5f,
                 };
diff --git a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingConflictPopover.cs b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingConflictPopover.cs
index 05aeb0b810d5..94335b329d54 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingConflictPopover.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingConflictPopover.cs
@@ -19,7 +19,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
 {
diff --git a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.KeyButton.cs b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.KeyButton.cs
index 8ee05f41d6ea..3c5309464dd8 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.KeyButton.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.KeyButton.cs
@@ -20,7 +20,6 @@
 using osu.Game.Input;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
 {
@@ -124,12 +123,12 @@ private void updateHoverState()
                 if (IsBinding)
                 {
                     box.FadeColour(colourProvider.Light2, transition_time, Easing.OutQuint);
-                    Text.FadeColour(Color4.Black, transition_time, Easing.OutQuint);
+                    Text.FadeColour(Colour4.Black, transition_time, Easing.OutQuint);
                 }
                 else
                 {
                     box.FadeColour(IsHovered ? colourProvider.Light4 : colourProvider.Background6, transition_time, Easing.OutQuint);
-                    Text.FadeColour(IsHovered ? Color4.Black : Color4.White, transition_time, Easing.OutQuint);
+                    Text.FadeColour(IsHovered ? Colour4.Black : Colour4.White, transition_time, Easing.OutQuint);
                 }
             }
 
diff --git a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs
index 5c760c37f017..eb1bc537cdbc 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -27,8 +26,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
 {
@@ -60,7 +58,6 @@ public partial class KeyBindingRow : Container, IFilterable
 
         #region IFilterable
 
-
         public bool MatchingFilter
         {
             get;
diff --git a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingsSubsection.cs b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingsSubsection.cs
index 0a2979e7f841..2ec839018175 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/KeyBindingsSubsection.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/KeyBindingsSubsection.cs
@@ -10,7 +10,7 @@
 using osu.Game.Database;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
diff --git a/osu.Game/Overlays/Settings/Sections/Input/TabletAreaSelection.cs b/osu.Game/Overlays/Settings/Sections/Input/TabletAreaSelection.cs
index 5cd09265509b..9e050f04e1c0 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/TabletAreaSelection.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/TabletAreaSelection.cs
@@ -15,8 +15,7 @@
 using osu.Framework.Input.Handlers.Tablet;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
 {
@@ -96,14 +95,14 @@ private void load(OverlayColourProvider colourProvider)
                                         },
                                         new Box
                                         {
-                                            Colour = Color4.White,
+                                            Colour = Colour4.White,
                                             Anchor = Anchor.Centre,
                                             Origin = Anchor.Centre,
                                             Height = 5,
                                         },
                                         new Box
                                         {
-                                            Colour = Color4.White,
+                                            Colour = Colour4.White,
                                             Anchor = Anchor.Centre,
                                             Origin = Anchor.Centre,
                                             Width = 5,
@@ -112,7 +111,7 @@ private void load(OverlayColourProvider colourProvider)
                                         {
                                             Anchor = Anchor.Centre,
                                             Origin = Anchor.Centre,
-                                            Colour = Color4.White,
+                                            Colour = Colour4.White,
                                             Font = OsuFont.Default.With(size: 12),
                                             Y = 10
                                         }
@@ -205,12 +204,12 @@ private void checkBounds()
 
             var usableAreaQuad = new Quad(
                 new Vector2(-halfUsableArea.X, -halfUsableArea.Y),
-                new Vector2(halfUsableArea.X, -halfUsableArea.Y),
-                new Vector2(-halfUsableArea.X, halfUsableArea.Y),
+                halfUsableArea with { Y = -halfUsableArea.Y },
+                halfUsableArea with { X = -halfUsableArea.X },
                 new Vector2(halfUsableArea.X, halfUsableArea.Y)
             );
 
-            var matrix = Matrix3.Identity;
+            Matrix3x2 matrix = Matrix3x2.Identity;
 
             MatrixExtensions.TranslateFromLeft(ref matrix, offset);
             MatrixExtensions.RotateFromLeft(ref matrix, float.DegreesToRadians(rotation.Value));
@@ -233,7 +232,7 @@ protected override void Update()
             if (!(tablet.Value?.Size is Vector2 size))
                 return;
 
-            float maxDimension = size.LengthFast;
+            float maxDimension = size.Length();
 
             float fitX = maxDimension / (DrawWidth - Padding.Left - Padding.Right);
             float fitY = maxDimension / DrawHeight;
diff --git a/osu.Game/Overlays/Settings/Sections/Input/TabletSettings.cs b/osu.Game/Overlays/Settings/Sections/Input/TabletSettings.cs
index 0c215ce69c5d..659b8a1a9c9d 100644
--- a/osu.Game/Overlays/Settings/Sections/Input/TabletSettings.cs
+++ b/osu.Game/Overlays/Settings/Sections/Input/TabletSettings.cs
@@ -22,7 +22,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Online.Chat;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Input
 {
@@ -205,8 +205,8 @@ protected override void LoadComplete()
                 offsetY.Value = val.NewValue.Y;
             }), true);
 
-            offsetX.BindValueChanged(val => areaOffset.Value = new Vector2(val.NewValue, areaOffset.Value.Y));
-            offsetY.BindValueChanged(val => areaOffset.Value = new Vector2(areaOffset.Value.X, val.NewValue));
+            offsetX.BindValueChanged(val => areaOffset.Value = areaOffset.Value with { X = val.NewValue });
+            offsetY.BindValueChanged(val => areaOffset.Value = areaOffset.Value with { Y = val.NewValue });
 
             areaSize.BindTo(tabletHandler.AreaSize);
             areaSize.BindValueChanged(val => Schedule(() =>
@@ -220,7 +220,7 @@ protected override void LoadComplete()
 
             sizeX.BindValueChanged(val =>
             {
-                areaSize.Value = new Vector2(val.NewValue, areaSize.Value.Y);
+                areaSize.Value = areaSize.Value with { X = val.NewValue };
 
                 aspectRatioApplication?.Cancel();
                 aspectRatioApplication = Schedule(() => applyAspectRatio(sizeX));
@@ -228,7 +228,7 @@ protected override void LoadComplete()
 
             sizeY.BindValueChanged(val =>
             {
-                areaSize.Value = new Vector2(areaSize.Value.X, val.NewValue);
+                areaSize.Value = areaSize.Value with { Y = val.NewValue };
 
                 aspectRatioApplication?.Cancel();
                 aspectRatioApplication = Schedule(() => applyAspectRatio(sizeY));
diff --git a/osu.Game/Overlays/Settings/Sections/InputSubsection.cs b/osu.Game/Overlays/Settings/Sections/InputSubsection.cs
index ac03c8e09a8f..fc520ae540fe 100644
--- a/osu.Game/Overlays/Settings/Sections/InputSubsection.cs
+++ b/osu.Game/Overlays/Settings/Sections/InputSubsection.cs
@@ -13,7 +13,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Settings.Sections
 {
@@ -173,7 +172,7 @@ protected override bool OnClick(ClickEvent e)
             private void updateDisplay()
             {
                 // default, toggled on (or not toggleable)
-                Color4 col = colourProvider.Content1;
+                Colour4 col = colourProvider.Content1;
 
                 if (toggleable && !Current.Value)
                     col = IsHovered ? colourProvider.Light1 : colourProvider.Foreground1;
diff --git a/osu.Game/Overlays/Settings/Sections/Maintenance/DirectorySelectScreen.cs b/osu.Game/Overlays/Settings/Sections/Maintenance/DirectorySelectScreen.cs
index 2fedd6d8941b..ba25b341949c 100644
--- a/osu.Game/Overlays/Settings/Sections/Maintenance/DirectorySelectScreen.cs
+++ b/osu.Game/Overlays/Settings/Sections/Maintenance/DirectorySelectScreen.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Screens;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Maintenance
 {
diff --git a/osu.Game/Overlays/Settings/Sections/Maintenance/MigrationRunScreen.cs b/osu.Game/Overlays/Settings/Sections/Maintenance/MigrationRunScreen.cs
index ce33039d688f..3d3cc2f77ffa 100644
--- a/osu.Game/Overlays/Settings/Sections/Maintenance/MigrationRunScreen.cs
+++ b/osu.Game/Overlays/Settings/Sections/Maintenance/MigrationRunScreen.cs
@@ -16,7 +16,7 @@
 using osu.Game.Localisation;
 using osu.Game.Screens;
 using osu.Game.Screens.Backgrounds;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings.Sections.Maintenance
 {
diff --git a/osu.Game/Overlays/Settings/Sections/SkinSection.cs b/osu.Game/Overlays/Settings/Sections/SkinSection.cs
index 8d8c73b14e1a..7c804b5e2ac6 100644
--- a/osu.Game/Overlays/Settings/Sections/SkinSection.cs
+++ b/osu.Game/Overlays/Settings/Sections/SkinSection.cs
@@ -25,7 +25,7 @@
 using osu.Game.Overlays.Dialog;
 using osu.Game.Overlays.SkinEditor;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 using Realms;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
diff --git a/osu.Game/Overlays/Settings/SettingsFooter.cs b/osu.Game/Overlays/Settings/SettingsFooter.cs
index a32dec4ca8c3..aa3f0a56340e 100644
--- a/osu.Game/Overlays/Settings/SettingsFooter.cs
+++ b/osu.Game/Overlays/Settings/SettingsFooter.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
@@ -66,7 +65,7 @@ private void load(OsuGameBase game, RulesetStore rulesets)
                         Anchor = Anchor.TopCentre,
                         Origin = Anchor.TopCentre,
                         Icon = ruleset.CreateInstance().CreateIcon(),
-                        Colour = Color4.Gray,
+                        Colour = Colour4.Gray,
                         Size = new Vector2(20),
                     };
 
@@ -111,7 +110,7 @@ private void load(ChangelogOverlay? changelog)
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Padding = new MarginPadding(5),
-                    Colour = DebugUtils.IsDebugBuild ? colours.Red : Color4.White,
+                    Colour = DebugUtils.IsDebugBuild ? colours.Red : Colour4.White,
                 });
             }
 
diff --git a/osu.Game/Overlays/Settings/SettingsItem.cs b/osu.Game/Overlays/Settings/SettingsItem.cs
index 9a5062996bff..da5b95ddfe39 100644
--- a/osu.Game/Overlays/Settings/SettingsItem.cs
+++ b/osu.Game/Overlays/Settings/SettingsItem.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
@@ -212,7 +212,7 @@ protected SettingsItem()
             // IMPORTANT: all bindable logic is in constructor intentionally to support "CreateSettingsControls" being used in a context it is
             // never loaded, but requires bindable storage.
             if (controlWithCurrent == null)
-                throw new ArgumentException(@$"Control created via {nameof(CreateControl)} must implement {nameof(IHasCurrentValue<T>)}");
+                throw new ArgumentException(@$"Control created via {nameof(CreateControl)} must implement {nameof(IHasCurrentValue<>)}");
 
             controlWithCurrent.Current.ValueChanged += _ => SettingChanged?.Invoke();
             controlWithCurrent.Current.DisabledChanged += _ => updateDisabled();
diff --git a/osu.Game/Overlays/Settings/SettingsNote.cs b/osu.Game/Overlays/Settings/SettingsNote.cs
index be2489a92e90..cb93a8e71473 100644
--- a/osu.Game/Overlays/Settings/SettingsNote.cs
+++ b/osu.Game/Overlays/Settings/SettingsNote.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Settings
 {
@@ -48,7 +47,7 @@ private void load()
                     {
                         background = new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                         },
                         text = new OsuTextFlowContainer(s => s.Font = OsuFont.Style.Caption1.With(weight: FontWeight.SemiBold))
diff --git a/osu.Game/Overlays/Settings/SettingsPercentageSlider.cs b/osu.Game/Overlays/Settings/SettingsPercentageSlider.cs
index d7a09d3392f2..c87bdf788050 100644
--- a/osu.Game/Overlays/Settings/SettingsPercentageSlider.cs
+++ b/osu.Game/Overlays/Settings/SettingsPercentageSlider.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SettingsRevertToDefaultButton.cs b/osu.Game/Overlays/Settings/SettingsRevertToDefaultButton.cs
index fc8b49265688..0d1cc91f9236 100644
--- a/osu.Game/Overlays/Settings/SettingsRevertToDefaultButton.cs
+++ b/osu.Game/Overlays/Settings/SettingsRevertToDefaultButton.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Containers;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SettingsSection.cs b/osu.Game/Overlays/Settings/SettingsSection.cs
index 326ff26ab9a1..39d676f8ee95 100644
--- a/osu.Game/Overlays/Settings/SettingsSection.cs
+++ b/osu.Game/Overlays/Settings/SettingsSection.cs
@@ -14,7 +14,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SettingsSidebar.cs b/osu.Game/Overlays/Settings/SettingsSidebar.cs
index bac8013a33b8..641f9edd78c2 100644
--- a/osu.Game/Overlays/Settings/SettingsSidebar.cs
+++ b/osu.Game/Overlays/Settings/SettingsSidebar.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SettingsSlider.cs b/osu.Game/Overlays/Settings/SettingsSlider.cs
index 2460d780994a..cbf0554c4952 100644
--- a/osu.Game/Overlays/Settings/SettingsSlider.cs
+++ b/osu.Game/Overlays/Settings/SettingsSlider.cs
@@ -1,10 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Numerics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SettingsSubsection.cs b/osu.Game/Overlays/Settings/SettingsSubsection.cs
index a0fe820a563a..8af41bd543aa 100644
--- a/osu.Game/Overlays/Settings/SettingsSubsection.cs
+++ b/osu.Game/Overlays/Settings/SettingsSubsection.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/Settings/SidebarIconButton.cs b/osu.Game/Overlays/Settings/SidebarIconButton.cs
index 9a87cc464a9f..0eaf7a7841e0 100644
--- a/osu.Game/Overlays/Settings/SidebarIconButton.cs
+++ b/osu.Game/Overlays/Settings/SidebarIconButton.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Settings
 {
diff --git a/osu.Game/Overlays/SettingsOverlay.cs b/osu.Game/Overlays/SettingsOverlay.cs
index e625afe94122..7eae37b74445 100644
--- a/osu.Game/Overlays/SettingsOverlay.cs
+++ b/osu.Game/Overlays/SettingsOverlay.cs
@@ -19,7 +19,6 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Overlays.Settings.Sections;
 using osu.Game.Overlays.Settings.Sections.Input;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays
 {
@@ -110,7 +109,7 @@ private void subPanelStateChanged(SettingsSubPanel panel, ValueChangedEvent<Visi
             {
                 case Visibility.Visible:
                     Sidebar.Expanded.Value = false;
-                    Sidebar.FadeColour(Color4.DarkGray, 300, Easing.OutQuint);
+                    Sidebar.FadeColour(Colour4.DarkGray, 300, Easing.OutQuint);
 
                     SectionsContainer.FadeOut(300, Easing.OutQuint);
                     ContentContainer.MoveToX(-PANEL_WIDTH, 500, Easing.OutQuint);
@@ -121,7 +120,7 @@ private void subPanelStateChanged(SettingsSubPanel panel, ValueChangedEvent<Visi
 
                 case Visibility.Hidden:
                     Sidebar.Expanded.Value = true;
-                    Sidebar.FadeColour(Color4.White, 300, Easing.OutQuint);
+                    Sidebar.FadeColour(Colour4.White, 300, Easing.OutQuint);
 
                     SectionsContainer.FadeIn(500, Easing.OutQuint);
                     ContentContainer.MoveToX(0, 500, Easing.OutQuint);
diff --git a/osu.Game/Overlays/SettingsPanel.cs b/osu.Game/Overlays/SettingsPanel.cs
index 885a790bf91b..9277bbec8a96 100644
--- a/osu.Game/Overlays/SettingsPanel.cs
+++ b/osu.Game/Overlays/SettingsPanel.cs
@@ -9,7 +9,6 @@
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -21,8 +20,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -118,7 +116,7 @@ private void load()
                     Masking = true,
                     EdgeEffect = new EdgeEffectParameters
                     {
-                        Colour = Color4.Black.Opacity(0),
+                        Colour = Colour4.Black.Opacity(0),
                         Type = EdgeEffectType.Shadow,
                         Hollow = true,
                         Radius = 10
diff --git a/osu.Game/Overlays/SettingsToolboxGroup.cs b/osu.Game/Overlays/SettingsToolboxGroup.cs
index 9090a294b5d5..005cbfa21660 100644
--- a/osu.Game/Overlays/SettingsToolboxGroup.cs
+++ b/osu.Game/Overlays/SettingsToolboxGroup.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -90,7 +89,7 @@ private void load(OverlayColourProvider? colourProvider)
                 {
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0.1f,
-                    Colour = colourProvider?.Background4 ?? Color4.Black,
+                    Colour = colourProvider?.Background4 ?? Colour4.Black,
                 },
                 new FillFlowContainer
                 {
@@ -191,7 +190,7 @@ private void updateExpandedState(bool animate)
                 content.ResizeHeightTo(0, animate ? transition_duration : 0, Easing.OutQuint);
             }
 
-            headerContent.FadeColour(Expanded.Value ? Color4.White : OsuColour.Gray(0.7f), 200, Easing.OutQuint);
+            headerContent.FadeColour(Expanded.Value ? Colour4.White : OsuColour.Gray(0.7f), 200, Easing.OutQuint);
         }
 
         private void updateFadeState()
diff --git a/osu.Game/Overlays/SkinEditor/ExternalEditOverlay.cs b/osu.Game/Overlays/SkinEditor/ExternalEditOverlay.cs
index 9be74c54c6ea..0afae985be42 100644
--- a/osu.Game/Overlays/SkinEditor/ExternalEditOverlay.cs
+++ b/osu.Game/Overlays/SkinEditor/ExternalEditOverlay.cs
@@ -7,7 +7,6 @@
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -27,8 +26,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Screens.OnlinePlay.Match.Components;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
@@ -65,7 +63,7 @@ private void load()
                     // Since we're drawing this overlay on top of another overlay (SkinEditor), the dimming effect isn't applied. So we need to add a dimming effect manually.
                     new Box
                     {
-                        Colour = Color4.Black.Opacity(0.5f),
+                        Colour = Colour4.Black.Opacity(0.5f),
                         RelativeSizeAxes = Axes.Both,
                     },
                     new Container
diff --git a/osu.Game/Overlays/SkinEditor/NonSkinnableScreenPlaceholder.cs b/osu.Game/Overlays/SkinEditor/NonSkinnableScreenPlaceholder.cs
index daaa92035ef9..e110ee39743d 100644
--- a/osu.Game/Overlays/SkinEditor/NonSkinnableScreenPlaceholder.cs
+++ b/osu.Game/Overlays/SkinEditor/NonSkinnableScreenPlaceholder.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinBlueprint.cs b/osu.Game/Overlays/SkinEditor/SkinBlueprint.cs
index 5c1b5123dcfd..4599e07cff82 100644
--- a/osu.Game/Overlays/SkinEditor/SkinBlueprint.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinBlueprint.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -16,8 +15,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
@@ -138,7 +136,8 @@ protected override void Update()
         {
             base.Update();
 
-            Vector2 scale = drawable.DrawInfo.MatrixInverse.ExtractScale().Xy;
+            var scaleM = drawable.DrawInfo.MatrixInverse;
+            Vector2 scale = new Vector2(MathF.Sqrt(scaleM.M11 * scaleM.M11 + scaleM.M21 * scaleM.M21), MathF.Sqrt(scaleM.M12 * scaleM.M12 + scaleM.M22 * scaleM.M22));
             drawableQuad = drawable.ToScreenSpace(
                 drawable.DrawRectangle
                         .Inflate(SkinSelectionHandler.INFLATE_SIZE * scale));
@@ -169,8 +168,8 @@ public AnchorOriginVisualiser(Drawable drawable)
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {
-            Color4 anchorColour = colours.Red1;
-            Color4 originColour = colours.Red3;
+            Colour4 anchorColour = colours.Red1;
+            Colour4 originColour = colours.Red3;
 
             InternalChildren = new[]
             {
@@ -217,8 +216,8 @@ protected override void Update()
             var point2 = ToLocalSpace(originBox.ScreenSpaceDrawQuad.Centre);
 
             anchorLine.Position = point1;
-            anchorLine.Width = (point2 - point1).Length;
-            anchorLine.Rotation = MathHelper.RadiansToDegrees(MathF.Atan2(point2.Y - point1.Y, point2.X - point1.X));
+            anchorLine.Width = (point2 - point1).Length();
+            anchorLine.Rotation = float.RadiansToDegrees(MathF.Atan2(point2.Y - point1.Y, point2.X - point1.X));
         }
 
         private Vector2 tweenPosition(Vector2 oldPosition, Vector2 newPosition)
diff --git a/osu.Game/Overlays/SkinEditor/SkinBlueprintContainer.cs b/osu.Game/Overlays/SkinEditor/SkinBlueprintContainer.cs
index df8cb33a7119..cc1106e4c618 100644
--- a/osu.Game/Overlays/SkinEditor/SkinBlueprintContainer.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinBlueprintContainer.cs
@@ -11,8 +11,8 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinComponentToolbox.cs b/osu.Game/Overlays/SkinEditor/SkinComponentToolbox.cs
index 4a3ae9911689..22782bdc0f21 100644
--- a/osu.Game/Overlays/SkinEditor/SkinComponentToolbox.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinComponentToolbox.cs
@@ -16,7 +16,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Screens.Edit.Components;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinEditorSceneLibrary.cs b/osu.Game/Overlays/SkinEditor/SkinEditorSceneLibrary.cs
index 52dcadd977dd..9a084b224ef2 100644
--- a/osu.Game/Overlays/SkinEditor/SkinEditorSceneLibrary.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinEditorSceneLibrary.cs
@@ -13,7 +13,7 @@
 using osu.Game.Localisation;
 using osu.Game.Screens;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs b/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
index 57762f752809..387ce7ce60c5 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
@@ -16,7 +16,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinSelectionRotationHandler.cs b/osu.Game/Overlays/SkinEditor/SkinSelectionRotationHandler.cs
index 2438abe5d9f5..98305b029c3d 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSelectionRotationHandler.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSelectionRotationHandler.cs
@@ -12,7 +12,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs b/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
index 691576921255..0bab4a3acd49 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
@@ -14,7 +14,7 @@
 using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/SkinEditor/SkinSettingsToolbox.cs b/osu.Game/Overlays/SkinEditor/SkinSettingsToolbox.cs
index a2b9db266592..11c4f615dec0 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSettingsToolbox.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSettingsToolbox.cs
@@ -10,7 +10,7 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.SkinEditor
 {
diff --git a/osu.Game/Overlays/Toolbar/AnalogClockDisplay.cs b/osu.Game/Overlays/Toolbar/AnalogClockDisplay.cs
index 000afd2c1dbd..f99fee0bff3d 100644
--- a/osu.Game/Overlays/Toolbar/AnalogClockDisplay.cs
+++ b/osu.Game/Overlays/Toolbar/AnalogClockDisplay.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -34,7 +33,7 @@ private void load()
                     RelativeSizeAxes = Axes.Both,
                     Masking = true,
                     BorderThickness = 2,
-                    BorderColour = Color4.White,
+                    BorderColour = Colour4.White,
                     Child = new Box
                     {
                         AlwaysPresent = true,
@@ -98,7 +97,7 @@ private void load(OsuColour colours)
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         Size = new Vector2(hand_thickness),
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                     },
                     new Circle
                     {
@@ -157,7 +156,7 @@ private void load(OsuColour colours)
                 {
                     new Circle
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                         BorderThickness = 0.7f,
                         BorderColour = colours.Gray2,
diff --git a/osu.Game/Overlays/Toolbar/DigitalClockDisplay.cs b/osu.Game/Overlays/Toolbar/DigitalClockDisplay.cs
index b1f6e5f2d3a2..2b69eb49f706 100644
--- a/osu.Game/Overlays/Toolbar/DigitalClockDisplay.cs
+++ b/osu.Game/Overlays/Toolbar/DigitalClockDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
diff --git a/osu.Game/Overlays/Toolbar/Toolbar.cs b/osu.Game/Overlays/Toolbar/Toolbar.cs
index 5a77eb24fbb4..2d0ad784017a 100644
--- a/osu.Game/Overlays/Toolbar/Toolbar.cs
+++ b/osu.Game/Overlays/Toolbar/Toolbar.cs
@@ -6,7 +6,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -17,7 +16,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Overlays.Toolbar
 {
diff --git a/osu.Game/Overlays/Toolbar/ToolbarButton.cs b/osu.Game/Overlays/Toolbar/ToolbarButton.cs
index f40f00523e12..f7545a520e98 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarButton.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -95,7 +93,7 @@ protected ToolbarButton()
                                 {
                                     RelativeSizeAxes = Axes.Both,
                                     Alpha = 0,
-                                    Colour = Color4.White.Opacity(100),
+                                    Colour = Colour4.White.Opacity(100),
                                     Blending = BlendingParameters.Additive,
                                 },
                             }
diff --git a/osu.Game/Overlays/Toolbar/ToolbarClock.cs b/osu.Game/Overlays/Toolbar/ToolbarClock.cs
index e1d658b811b8..f9a48a75acc6 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarClock.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarClock.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -70,7 +68,7 @@ private void load(OsuConfigManager config)
                                 {
                                     RelativeSizeAxes = Axes.Both,
                                     Alpha = 0,
-                                    Colour = Color4.White.Opacity(100),
+                                    Colour = Colour4.White.Opacity(100),
                                     Blending = BlendingParameters.Additive,
                                 },
                             }
diff --git a/osu.Game/Overlays/Toolbar/ToolbarMusicButton.cs b/osu.Game/Overlays/Toolbar/ToolbarMusicButton.cs
index e6ffc1ad5ef7..260178d13d73 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarMusicButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarMusicButton.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -14,8 +13,7 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Threading;
 using osu.Game.Input.Bindings;
-using osuTK.Graphics;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -50,7 +48,7 @@ private void load(NowPlayingOverlay music)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.White.Opacity(0.25f),
+                        Colour = Colour4.White.Opacity(0.25f),
                     },
                     volumeBar = new Box
                     {
@@ -58,7 +56,7 @@ private void load(NowPlayingOverlay music)
                         Height = 0f,
                         Anchor = Anchor.BottomLeft,
                         Origin = Anchor.BottomLeft,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                     }
                 }
             });
diff --git a/osu.Game/Overlays/Toolbar/ToolbarNotificationButton.cs b/osu.Game/Overlays/Toolbar/ToolbarNotificationButton.cs
index 73b1a4eb4184..53034f906cbc 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarNotificationButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarNotificationButton.cs
@@ -9,8 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -70,7 +69,7 @@ public int Count
 
                     if (value > field)
                     {
-                        circle.FlashColour(Color4.White, 600, Easing.OutQuint);
+                        circle.FlashColour(Colour4.White, 600, Easing.OutQuint);
                         this.ScaleTo(1.1f).Then().ScaleTo(1, 600, Easing.OutElastic);
                     }
 
@@ -88,7 +87,7 @@ public CountCircle()
                     circle = new Circle
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Red
+                        Colour = Colour4.Red
                     },
                     countText = new OsuSpriteText
                     {
@@ -97,7 +96,7 @@ public CountCircle()
                         Y = -1,
                         Font = OsuFont.GetFont(size: 14, weight: FontWeight.Bold),
                         Padding = new MarginPadding(5),
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         UseFullGlyphHeight = true,
                     }
                 };
diff --git a/osu.Game/Overlays/Toolbar/ToolbarOverlayToggleButton.cs b/osu.Game/Overlays/Toolbar/ToolbarOverlayToggleButton.cs
index 78dd15c819e4..2cabdfcda311 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarOverlayToggleButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarOverlayToggleButton.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
diff --git a/osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs b/osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs
index 0e2fa6688d1b..e85327aff3ed 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs
@@ -16,9 +16,8 @@
 using osu.Framework.Input.Events;
 using osu.Framework.IO.Stores;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -98,7 +97,7 @@ protected override void LoadComplete()
 
         private void currentDisabledChanged()
         {
-            this.FadeColour(Current.Disabled ? Color4.Gray : Color4.White, 300);
+            this.FadeColour(Current.Disabled ? Colour4.Gray : Colour4.White, 300);
         }
 
         private bool hasInitialPosition;
diff --git a/osu.Game/Overlays/Toolbar/ToolbarUserButton.cs b/osu.Game/Overlays/Toolbar/ToolbarUserButton.cs
index d8350ce4519d..289a2335cd08 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarUserButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarUserButton.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -16,8 +15,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
@@ -62,7 +60,7 @@ private void load(OsuColour colours, IAPIProvider api, LoginOverlay? login)
                     {
                         Type = EdgeEffectType.Shadow,
                         Radius = 4,
-                        Colour = Color4.Black.Opacity(0.1f),
+                        Colour = Colour4.Black.Opacity(0.1f),
                     },
                     Children = new Drawable[]
                     {
diff --git a/osu.Game/Overlays/Toolbar/TransientUserStatisticsUpdateDisplay.cs b/osu.Game/Overlays/Toolbar/TransientUserStatisticsUpdateDisplay.cs
index 0bfdfc9d6fcc..b6781a1c92c3 100644
--- a/osu.Game/Overlays/Toolbar/TransientUserStatisticsUpdateDisplay.cs
+++ b/osu.Game/Overlays/Toolbar/TransientUserStatisticsUpdateDisplay.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Toolbar
 {
diff --git a/osu.Game/Overlays/UserProfileOverlay.cs b/osu.Game/Overlays/UserProfileOverlay.cs
index 5cb5fe5d2fb2..62afd312dde6 100644
--- a/osu.Game/Overlays/UserProfileOverlay.cs
+++ b/osu.Game/Overlays/UserProfileOverlay.cs
@@ -26,8 +26,7 @@
 using osu.Game.Overlays.Profile.Sections;
 using osu.Game.Rulesets;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -82,7 +81,7 @@ private void load()
 
         protected override ProfileHeader CreateHeader() => new ProfileHeader();
 
-        protected override Color4 BackgroundColour => ColourProvider.Background5;
+        protected override Colour4 BackgroundColour => ColourProvider.Background5;
 
         public void ShowUser(IUser userToShow, IRulesetInfo? userRuleset = null)
         {
diff --git a/osu.Game/Overlays/Volume/MasterVolumeMeter.cs b/osu.Game/Overlays/Volume/MasterVolumeMeter.cs
index fd3d410321f5..e1abc3046c3f 100644
--- a/osu.Game/Overlays/Volume/MasterVolumeMeter.cs
+++ b/osu.Game/Overlays/Volume/MasterVolumeMeter.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Localisation;
-using osuTK.Graphics;
 
 namespace osu.Game.Overlays.Volume
 {
@@ -21,7 +20,7 @@ public partial class MasterVolumeMeter : VolumeMeter
         [Resolved]
         private VolumeOverlay volumeOverlay { get; set; } = null!;
 
-        public MasterVolumeMeter(LocalisableString name, float circleSize, Color4 meterColour)
+        public MasterVolumeMeter(LocalisableString name, float circleSize, Colour4 meterColour)
             : base(name, circleSize, meterColour)
         {
         }
diff --git a/osu.Game/Overlays/Volume/MuteButton.cs b/osu.Game/Overlays/Volume/MuteButton.cs
index 06837754da16..4dcb779a722b 100644
--- a/osu.Game/Overlays/Volume/MuteButton.cs
+++ b/osu.Game/Overlays/Volume/MuteButton.cs
@@ -13,7 +13,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Volume
 {
diff --git a/osu.Game/Overlays/Volume/VolumeMeter.cs b/osu.Game/Overlays/Volume/VolumeMeter.cs
index 4fcfe35d80fe..63dd409c52ed 100644
--- a/osu.Game/Overlays/Volume/VolumeMeter.cs
+++ b/osu.Game/Overlays/Volume/VolumeMeter.cs
@@ -12,7 +12,6 @@
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -26,8 +25,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Volume
 {
@@ -42,7 +40,7 @@ public partial class VolumeMeter : Container, IStateful<SelectionState>
 
         protected readonly float CircleSize;
 
-        private readonly Color4 meterColour;
+        private readonly Colour4 meterColour;
         private readonly LocalisableString name;
 
         private OsuSpriteText text;
@@ -74,7 +72,7 @@ public SelectionState State
 
         private const float transition_length = 500;
 
-        public VolumeMeter(LocalisableString name, float circleSize, Color4 meterColour)
+        public VolumeMeter(LocalisableString name, float circleSize, Colour4 meterColour)
         {
             CircleSize = circleSize;
             this.meterColour = meterColour;
@@ -90,7 +88,7 @@ private void load(OsuColour colours, AudioManager audio)
             notchSample = audio.Samples.Get(@"UI/notch-tick");
             sampleLastPlaybackTime = Time.Current;
 
-            Color4 backgroundColour = colours.Gray1;
+            Colour4 backgroundColour = colours.Gray1;
 
             CircularProgress bgProgress;
 
@@ -205,7 +203,7 @@ private void load(OsuColour colours, AudioManager audio)
                             Font = OsuFont.Numeric.With(size: 0.16f * CircleSize)
                         }).WithEffect(new GlowEffect
                         {
-                            Colour = Color4.Transparent,
+                            Colour = Colour4.Transparent,
                             PadExtent = true,
                         })
                     }
@@ -267,7 +265,7 @@ protected double DisplayVolume
                 }
                 else
                 {
-                    maxGlow.EffectColour = Color4.Transparent;
+                    maxGlow.EffectColour = Colour4.Transparent;
                     text.Text = intValue.ToString(CultureInfo.CurrentCulture);
                 }
 
diff --git a/osu.Game/Overlays/VolumeOverlay.cs b/osu.Game/Overlays/VolumeOverlay.cs
index 8a656f4f2456..e000464d8fb4 100644
--- a/osu.Game/Overlays/VolumeOverlay.cs
+++ b/osu.Game/Overlays/VolumeOverlay.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -18,8 +17,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
 using osu.Game.Overlays.Volume;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
@@ -48,7 +46,7 @@ private void load(AudioManager audio, OsuColour colours)
                 {
                     RelativeSizeAxes = Axes.Y,
                     Width = 300,
-                    Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.75f), Color4.Black.Opacity(0))
+                    Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.75f), Colour4.Black.Opacity(0))
                 },
                 new FillFlowContainer
                 {
diff --git a/osu.Game/Overlays/Wiki/Markdown/WikiMarkdownImageBlock.cs b/osu.Game/Overlays/Wiki/Markdown/WikiMarkdownImageBlock.cs
index cae2d0167aa7..2d923f61a3cb 100644
--- a/osu.Game/Overlays/Wiki/Markdown/WikiMarkdownImageBlock.cs
+++ b/osu.Game/Overlays/Wiki/Markdown/WikiMarkdownImageBlock.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Containers.Markdown;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Wiki.Markdown
 {
diff --git a/osu.Game/Overlays/Wiki/Markdown/WikiNoticeContainer.cs b/osu.Game/Overlays/Wiki/Markdown/WikiNoticeContainer.cs
index ee00843317b3..a6ddad30d117 100644
--- a/osu.Game/Overlays/Wiki/Markdown/WikiNoticeContainer.cs
+++ b/osu.Game/Overlays/Wiki/Markdown/WikiNoticeContainer.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Wiki.Markdown
 {
diff --git a/osu.Game/Overlays/Wiki/WikiHeader.cs b/osu.Game/Overlays/Wiki/WikiHeader.cs
index a5129eaefdf8..339712f0d6a2 100644
--- a/osu.Game/Overlays/Wiki/WikiHeader.cs
+++ b/osu.Game/Overlays/Wiki/WikiHeader.cs
@@ -18,7 +18,7 @@
 using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Wiki
 {
diff --git a/osu.Game/Overlays/Wiki/WikiPanelContainer.cs b/osu.Game/Overlays/Wiki/WikiPanelContainer.cs
index 81bdae552585..808ea8b75de7 100644
--- a/osu.Game/Overlays/Wiki/WikiPanelContainer.cs
+++ b/osu.Game/Overlays/Wiki/WikiPanelContainer.cs
@@ -5,7 +5,6 @@
 
 using Markdig.Syntax;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Containers.Markdown;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.Containers.Markdown;
 using osu.Game.Online.API;
 using osu.Game.Overlays.Wiki.Markdown;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Overlays.Wiki
 {
@@ -66,7 +64,7 @@ private void load(IAPIProvider api)
         protected override void Update()
         {
             base.Update();
-            background.Size = Parent!.DrawSize * new Vector2(Size.X, 1);
+            background.Size = Parent!.DrawSize * (Size with { Y = 1 });
         }
 
         private partial class PanelBackground : CompositeDrawable
@@ -83,7 +81,7 @@ private void load(OverlayColourProvider colourProvider)
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(25),
+                        Colour = Colour4.Black.Opacity(25),
                         Offset = new Vector2(0, 1),
                         Radius = 3,
                     },
diff --git a/osu.Game/Overlays/WizardScreen.cs b/osu.Game/Overlays/WizardScreen.cs
index 5112efaa612a..fd2368c336c3 100644
--- a/osu.Game/Overlays/WizardScreen.cs
+++ b/osu.Game/Overlays/WizardScreen.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Overlays
 {
diff --git a/osu.Game/Replays/Legacy/LegacyReplayFrame.cs b/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
index bfc8ad5df8e3..7a744500233b 100644
--- a/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
+++ b/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
@@ -4,7 +4,7 @@
 using MessagePack;
 using Newtonsoft.Json;
 using osu.Game.Rulesets.Replays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Replays.Legacy
 {
diff --git a/osu.Game/Rulesets/Configuration/RulesetConfigManager.cs b/osu.Game/Rulesets/Configuration/RulesetConfigManager.cs
index 418dc3576f55..7e18a0bc93d6 100644
--- a/osu.Game/Rulesets/Configuration/RulesetConfigManager.cs
+++ b/osu.Game/Rulesets/Configuration/RulesetConfigManager.cs
@@ -60,7 +60,7 @@ protected override bool PerformSave()
                 pendingWrites.Clear();
             }
 
-            if (!changed.Any())
+            if (changed.Length == 0)
                 return true;
 
             realm?.Write(r =>
diff --git a/osu.Game/Rulesets/Difficulty/DifficultyCalculator.cs b/osu.Game/Rulesets/Difficulty/DifficultyCalculator.cs
index f059304c3ec1..1c6239eaabd0 100644
--- a/osu.Game/Rulesets/Difficulty/DifficultyCalculator.cs
+++ b/osu.Game/Rulesets/Difficulty/DifficultyCalculator.cs
@@ -76,7 +76,7 @@ public DifficultyAttributes Calculate([NotNull] IEnumerable<Mod> mods, Cancellat
 
             var skills = CreateSkills(Beatmap, playableMods, clockRate);
 
-            if (!Beatmap.HitObjects.Any())
+            if (Beatmap.HitObjects.Count == 0)
                 return CreateDifficultyAttributes(Beatmap, playableMods, skills, clockRate);
 
             foreach (var hitObject in getDifficultyHitObjects())
@@ -118,7 +118,7 @@ public List<TimedDifficultyAttributes> CalculateTimed([NotNull] IEnumerable<Mod>
 
             var attribs = new List<TimedDifficultyAttributes>();
 
-            if (!Beatmap.HitObjects.Any())
+            if (Beatmap.HitObjects.Count == 0)
                 return attribs;
 
             var skills = CreateSkills(Beatmap, playableMods, clockRate);
diff --git a/osu.Game/Rulesets/Edit/Checks/Components/IssueTemplate.cs b/osu.Game/Rulesets/Edit/Checks/Components/IssueTemplate.cs
index 955bc0265bcc..064b7de2c310 100644
--- a/osu.Game/Rulesets/Edit/Checks/Components/IssueTemplate.cs
+++ b/osu.Game/Rulesets/Edit/Checks/Components/IssueTemplate.cs
@@ -2,16 +2,15 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Edit.Checks.Components
 {
     public class IssueTemplate
     {
-        private static readonly Color4 problem_red = new Colour4(1.0f, 0.4f, 0.4f, 1.0f);
-        private static readonly Color4 warning_yellow = new Colour4(1.0f, 0.8f, 0.2f, 1.0f);
-        private static readonly Color4 negligible_green = new Colour4(0.33f, 0.8f, 0.5f, 1.0f);
-        private static readonly Color4 error_gray = new Colour4(0.5f, 0.5f, 0.5f, 1.0f);
+        private static readonly Colour4 problem_red = new Colour4(1.0f, 0.4f, 0.4f, 1.0f);
+        private static readonly Colour4 warning_yellow = new Colour4(1.0f, 0.8f, 0.2f, 1.0f);
+        private static readonly Colour4 negligible_green = new Colour4(0.33f, 0.8f, 0.5f, 1.0f);
+        private static readonly Colour4 error_gray = new Colour4(0.5f, 0.5f, 0.5f, 1.0f);
 
         /// <summary>
         /// The check that this template originates from.
@@ -65,7 +64,7 @@ public Colour4 Colour
                         return error_gray;
 
                     default:
-                        return Color4.White;
+                        return Colour4.White;
                 }
             }
         }
diff --git a/osu.Game/Rulesets/Edit/ComposerDistanceSnapProvider.cs b/osu.Game/Rulesets/Edit/ComposerDistanceSnapProvider.cs
index 0b8df0ad417a..d7d44fb15545 100644
--- a/osu.Game/Rulesets/Edit/ComposerDistanceSnapProvider.cs
+++ b/osu.Game/Rulesets/Edit/ComposerDistanceSnapProvider.cs
@@ -25,7 +25,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.TernaryButtons;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/ExpandingToolboxContainer.cs b/osu.Game/Rulesets/Edit/ExpandingToolboxContainer.cs
index 55449ff4d94f..31188db5cf13 100644
--- a/osu.Game/Rulesets/Edit/ExpandingToolboxContainer.cs
+++ b/osu.Game/Rulesets/Edit/ExpandingToolboxContainer.cs
@@ -11,7 +11,7 @@
 using osu.Game.Configuration;
 using osu.Game.Graphics.Containers;
 using osu.Game.Screens.Edit;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/HitObjectComposer.cs b/osu.Game/Rulesets/Edit/HitObjectComposer.cs
index e8b5465f4511..c7ccb415eaad 100644
--- a/osu.Game/Rulesets/Edit/HitObjectComposer.cs
+++ b/osu.Game/Rulesets/Edit/HitObjectComposer.cs
@@ -34,8 +34,7 @@
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/HitObjectPlacementBlueprint.cs b/osu.Game/Rulesets/Edit/HitObjectPlacementBlueprint.cs
index 200244c8e0e5..279cb8424a56 100644
--- a/osu.Game/Rulesets/Edit/HitObjectPlacementBlueprint.cs
+++ b/osu.Game/Rulesets/Edit/HitObjectPlacementBlueprint.cs
@@ -15,7 +15,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Compose;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/HitObjectSelectionBlueprint.cs b/osu.Game/Rulesets/Edit/HitObjectSelectionBlueprint.cs
index 93b889792b33..ef72526e1b04 100644
--- a/osu.Game/Rulesets/Edit/HitObjectSelectionBlueprint.cs
+++ b/osu.Game/Rulesets/Edit/HitObjectSelectionBlueprint.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/PlacementBlueprint.cs b/osu.Game/Rulesets/Edit/PlacementBlueprint.cs
index f2d501d1c401..bc5427bc50c6 100644
--- a/osu.Game/Rulesets/Edit/PlacementBlueprint.cs
+++ b/osu.Game/Rulesets/Edit/PlacementBlueprint.cs
@@ -7,8 +7,8 @@
 using osu.Framework.Input.Events;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Objects;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/ScrollingHitObjectComposer.cs b/osu.Game/Rulesets/Edit/ScrollingHitObjectComposer.cs
index d5492fc8a620..944c8ab7dada 100644
--- a/osu.Game/Rulesets/Edit/ScrollingHitObjectComposer.cs
+++ b/osu.Game/Rulesets/Edit/ScrollingHitObjectComposer.cs
@@ -16,7 +16,7 @@
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/SelectionBlueprint.cs b/osu.Game/Rulesets/Edit/SelectionBlueprint.cs
index aa9e8da7b6bf..9cab9aba7be6 100644
--- a/osu.Game/Rulesets/Edit/SelectionBlueprint.cs
+++ b/osu.Game/Rulesets/Edit/SelectionBlueprint.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Edit/SnapResult.cs b/osu.Game/Rulesets/Edit/SnapResult.cs
index 9a1405b97ce3..83a20316eb08 100644
--- a/osu.Game/Rulesets/Edit/SnapResult.cs
+++ b/osu.Game/Rulesets/Edit/SnapResult.cs
@@ -4,7 +4,7 @@
 #nullable disable
 
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Edit
 {
diff --git a/osu.Game/Rulesets/Judgements/DefaultJudgementPiece.cs b/osu.Game/Rulesets/Judgements/DefaultJudgementPiece.cs
index 61b72a606659..6c2b33e16782 100644
--- a/osu.Game/Rulesets/Judgements/DefaultJudgementPiece.cs
+++ b/osu.Game/Rulesets/Judgements/DefaultJudgementPiece.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Judgements
 {
diff --git a/osu.Game/Rulesets/Judgements/DrawableJudgement.cs b/osu.Game/Rulesets/Judgements/DrawableJudgement.cs
index 3e70f52ee7ce..225f2ac9100f 100644
--- a/osu.Game/Rulesets/Judgements/DrawableJudgement.cs
+++ b/osu.Game/Rulesets/Judgements/DrawableJudgement.cs
@@ -12,7 +12,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Judgements
 {
diff --git a/osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs b/osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs
index 63d2f7d7f32a..7300318e0c6b 100644
--- a/osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs
+++ b/osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs
@@ -110,7 +110,7 @@ public class ModAdaptiveSpeed : Mod, IApplicableToRate, IApplicableToDrawableHit
         /// Therefore, the approximated target rate for this object would be equal to 500 / 480 * <see cref="InitialRate"/>.
         /// </para>
         /// </example>
-        private readonly List<double> recentRates = Enumerable.Repeat(1d, recent_rate_count).ToList();
+        private readonly List<double> recentRates = new List<double>(recent_rate_count);
 
         /// <summary>
         /// For each given <see cref="HitObject"/> in the map, this dictionary maps the object onto the latest end time of any other object
@@ -133,6 +133,11 @@ public ModAdaptiveSpeed()
             rateAdjustHelper = new RateAdjustModHelper(SpeedChange);
             rateAdjustHelper.HandleAudioAdjustments(AdjustPitch);
 
+            // Pre-populate the list so it has exactly recent_rate_count elements at all times.
+            // ApplyToTrack updates the values in-place (requires the elements to already exist).
+            for (int i = 0; i < recent_rate_count; i++)
+                recentRates.Add(1d);
+
             InitialRate.BindValueChanged(val =>
             {
                 SpeedChange.Value = val.NewValue;
@@ -143,8 +148,9 @@ public ModAdaptiveSpeed()
         public void ApplyToTrack(IAdjustableAudioComponent track)
         {
             InitialRate.TriggerChange();
-            recentRates.Clear();
-            recentRates.AddRange(Enumerable.Repeat(InitialRate.Value, recent_rate_count));
+
+            for (int i = 0; i < recentRates.Count; i++)
+                recentRates[i] = InitialRate.Value;
 
             rateAdjustHelper.ApplyToTrack(track);
         }
@@ -247,14 +253,16 @@ private void updateTargetRate()
             // If the player hits half of the notes too fast and the other half too slow:  Abs(consistency) = 0
             // If the player hits all their notes too fast or too slow:                    Abs(consistency) = recent_rate_count - 1
             int consistency = 0;
+            double sum = recentRates[0];
 
             for (int i = 1; i < recentRates.Count; i++)
             {
                 consistency += Math.Sign(recentRates[i] - recentRates[i - 1]);
+                sum += recentRates[i];
             }
 
             // Scale the rate adjustment based on consistency
-            targetRate = Interpolation.Lerp(targetRate, recentRates.Average(), Math.Abs(consistency) / (recent_rate_count - 1d));
+            targetRate = Interpolation.Lerp(targetRate, sum / recentRates.Count, Math.Abs(consistency) / (recent_rate_count - 1d));
         }
     }
 }
diff --git a/osu.Game/Rulesets/Mods/ModBarrelRoll.cs b/osu.Game/Rulesets/Mods/ModBarrelRoll.cs
index 98a799906515..9c33fc94038a 100644
--- a/osu.Game/Rulesets/Mods/ModBarrelRoll.cs
+++ b/osu.Game/Rulesets/Mods/ModBarrelRoll.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mods
 {
diff --git a/osu.Game/Rulesets/Mods/ModFlashlight.cs b/osu.Game/Rulesets/Mods/ModFlashlight.cs
index 6ff34e64234e..d6ceead68b94 100644
--- a/osu.Game/Rulesets/Mods/ModFlashlight.cs
+++ b/osu.Game/Rulesets/Mods/ModFlashlight.cs
@@ -23,8 +23,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Mods
 {
@@ -81,7 +80,7 @@ public virtual void ApplyToDrawableRuleset(DrawableRuleset<T> drawableRuleset)
             var flashlight = CreateFlashlight();
 
             flashlight.RelativeSizeAxes = Axes.Both;
-            flashlight.Colour = Color4.Black;
+            flashlight.Colour = Colour4.Black;
 
             flashlight.Combo.BindTo(Combo);
 
@@ -181,30 +180,26 @@ protected virtual float GetComboScaleFor(int combo)
                 return 1.0f;
             }
 
-            private Vector2 flashlightPosition;
-
             protected Vector2 FlashlightPosition
             {
-                get => flashlightPosition;
+                get;
                 set
                 {
-                    if (flashlightPosition == value) return;
+                    if (field == value) return;
 
-                    flashlightPosition = value;
+                    field = value;
                     Invalidate(Invalidation.DrawNode);
                 }
             }
 
-            private Vector2 flashlightSize;
-
             protected Vector2 FlashlightSize
             {
-                get => flashlightSize;
+                get;
                 set
                 {
-                    if (flashlightSize == value) return;
+                    if (field == value) return;
 
-                    flashlightSize = value;
+                    field = value;
                     Invalidate(Invalidation.DrawNode);
                 }
             }
@@ -261,7 +256,8 @@ public override void ApplyState()
                     flashlightPosition = Vector2Extensions.Transform(Source.FlashlightPosition, DrawInfo.Matrix);
 
                     // scale the flashlight based on the playfield to match gameplay components scale.
-                    Vector2 drawInfoScale = Source.playfieldDrawInfo.Matrix.ExtractScale().Xy;
+                    var drawInfoM = Source.playfieldDrawInfo.Matrix;
+                    Vector2 drawInfoScale = new Vector2(MathF.Sqrt(drawInfoM.M11 * drawInfoM.M11 + drawInfoM.M21 * drawInfoM.M21), MathF.Sqrt(drawInfoM.M12 * drawInfoM.M12 + drawInfoM.M22 * drawInfoM.M22));
                     flashlightSize = Source.FlashlightSize * drawInfoScale;
 
                     flashlightDim = Source.FlashlightDim;
diff --git a/osu.Game/Rulesets/Mods/ModTimeRamp.cs b/osu.Game/Rulesets/Mods/ModTimeRamp.cs
index 049b8f9b7f77..988b558baca1 100644
--- a/osu.Game/Rulesets/Mods/ModTimeRamp.cs
+++ b/osu.Game/Rulesets/Mods/ModTimeRamp.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
 using osu.Framework.Localisation;
@@ -83,8 +82,8 @@ public virtual void ApplyToBeatmap(IBeatmap beatmap)
         {
             SpeedChange.SetDefault();
 
-            double firstObjectStart = beatmap.HitObjects.FirstOrDefault()?.StartTime ?? 0;
-            double lastObjectEnd = beatmap.HitObjects.Any() ? beatmap.GetLastObjectTime() : 0;
+            double firstObjectStart = beatmap.HitObjects.Count > 0 ? beatmap.HitObjects[0].StartTime : 0;
+            double lastObjectEnd = beatmap.HitObjects.Count > 0 ? beatmap.GetLastObjectTime() : 0;
 
             beginRampTime = firstObjectStart;
             finalRateTime = firstObjectStart + FINAL_RATE_PROGRESS * (lastObjectEnd - firstObjectStart);
diff --git a/osu.Game/Rulesets/Objects/BezierConverter.cs b/osu.Game/Rulesets/Objects/BezierConverter.cs
index 638975630e20..10404e4bd3ff 100644
--- a/osu.Game/Rulesets/Objects/BezierConverter.cs
+++ b/osu.Game/Rulesets/Objects/BezierConverter.cs
@@ -6,7 +6,7 @@
 using System.Linq;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects
 {
@@ -15,9 +15,9 @@ public static class BezierConverter
         private struct CircleBezierPreset
         {
             public readonly double ArcLength;
-            public readonly Vector2d[] ControlPoints;
+            public readonly Vector2[] ControlPoints;
 
-            public CircleBezierPreset(double arcLength, Vector2d[] controlPoints)
+            public CircleBezierPreset(double arcLength, Vector2[] controlPoints)
             {
                 ArcLength = arcLength;
                 ControlPoints = controlPoints;
@@ -28,15 +28,15 @@ public CircleBezierPreset(double arcLength, Vector2d[] controlPoints)
         private static readonly CircleBezierPreset[] circle_presets =
         {
             new CircleBezierPreset(0.4993379862754501,
-                new[] { new Vector2d(1, 0), new Vector2d(1, 0.2549893626632736f), new Vector2d(0.8778997558480327f, 0.47884446188920726f) }),
+                new[] { new Vector2(1, 0), new Vector2(1, 0.2549893626632736f), new Vector2(0.8778997558480327f, 0.47884446188920726f) }),
             new CircleBezierPreset(1.7579419829169447,
-                new[] { new Vector2d(1, 0), new Vector2d(1, 0.6263026f), new Vector2d(0.42931178f, 1.0990661f), new Vector2d(-0.18605515f, 0.9825393f) }),
+                new[] { new Vector2(1, 0), new Vector2(1, 0.6263026f), new Vector2(0.42931178f, 1.0990661f), new Vector2(-0.18605515f, 0.9825393f) }),
             new CircleBezierPreset(3.1385246920140215,
-                new[] { new Vector2d(1, 0), new Vector2d(1, 0.87084764f), new Vector2d(0.002304826f, 1.5033062f), new Vector2d(-0.9973236f, 0.8739115f), new Vector2d(-0.9999953f, 0.0030679568f) }),
+                new[] { new Vector2(1, 0), new Vector2(1, 0.87084764f), new Vector2(0.002304826f, 1.5033062f), new Vector2(-0.9973236f, 0.8739115f), new Vector2(-0.9999953f, 0.0030679568f) }),
             new CircleBezierPreset(5.69720464620727,
-                new[] { new Vector2d(1, 0), new Vector2d(1, 1.4137783f), new Vector2d(-1.4305235f, 2.0779421f), new Vector2d(-2.3410065f, -0.94017583f), new Vector2d(0.05132711f, -1.7309346f), new Vector2d(0.8331702f, -0.5530167f) }),
+                new[] { new Vector2(1, 0), new Vector2(1, 1.4137783f), new Vector2(-1.4305235f, 2.0779421f), new Vector2(-2.3410065f, -0.94017583f), new Vector2(0.05132711f, -1.7309346f), new Vector2(0.8331702f, -0.5530167f) }),
             new CircleBezierPreset(2 * Math.PI,
-                new[] { new Vector2d(1, 0), new Vector2d(1, 1.2447058f), new Vector2d(-0.8526471f, 2.118367f), new Vector2d(-2.6211002f, 7.854936e-06f), new Vector2d(-0.8526448f, -2.118357f), new Vector2d(1, -1.2447058f), new Vector2d(1, 0) })
+                new[] { new Vector2(1, 0), new Vector2(1, 1.2447058f), new Vector2(-0.8526471f, 2.118367f), new Vector2(-2.6211002f, 7.854936e-06f), new Vector2(-0.8526448f, -2.118357f), new Vector2(1, -1.2447058f), new Vector2(1, 0) })
         };
 
         /// <summary>
@@ -212,7 +212,7 @@ public static Vector2[] ConvertCircleToBezierAnchors(ReadOnlySpan<Vector2> contr
             }
 
             double arcLength = preset.ArcLength;
-            var arc = new Vector2d[preset.ControlPoints.Length];
+            var arc = new Vector2[preset.ControlPoints.Length];
             preset.ControlPoints.CopyTo(arc, 0);
 
             // Converge on arcLength of thetaRange
@@ -225,7 +225,7 @@ public static Vector2[] ConvertCircleToBezierAnchors(ReadOnlySpan<Vector2> contr
                 {
                     for (int i = n; i > j; i--)
                     {
-                        arc[i] = arc[i] * tf + arc[i - 1] * (1 - tf);
+                        arc[i] = arc[i] * (float)tf + arc[i - 1] * (float)(1 - tf);
                     }
                 }
 
diff --git a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
index 0566c49acc82..7135d09bfa2e 100644
--- a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
+++ b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
@@ -26,7 +26,6 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Objects.Drawables
 {
@@ -57,7 +56,7 @@ public abstract partial class DrawableHitObject : PoolableDrawableWithLifetime<H
         /// <summary>
         /// The colour used for various elements of this DrawableHitObject.
         /// </summary>
-        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>(Color4.Gray);
+        public readonly Bindable<Colour4> AccentColour = new Bindable<Colour4>(Colour4.Gray);
 
         protected PausableSkinnableSound Samples { get; private set; }
 
@@ -389,12 +388,29 @@ protected virtual void OnFree()
         /// </summary>
         protected virtual void LoadSamples()
         {
-            var samples = GetSamples().Cast<ISampleInfo>().ToArray();
+            var source = GetSamples();
 
-            if (samples.Length <= 0)
+            if (source is IList<HitSampleInfo> list)
+            {
+                if (list.Count == 0)
+                    return;
+
+                var samples = new ISampleInfo[list.Count];
+
+                for (int i = 0; i < list.Count; i++)
+                    samples[i] = list[i];
+
+                Samples.Samples = samples;
+                return;
+            }
+
+            // Fallback for custom GetSamples() implementations that don't return IList<HitSampleInfo>.
+            ISampleInfo[] fallbackSamples = source.Cast<ISampleInfo>().ToArray();
+
+            if (fallbackSamples.Length == 0)
                 return;
 
-            Samples.Samples = samples;
+            Samples.Samples = fallbackSamples;
         }
 
         private void onNewResult(DrawableHitObject drawableHitObject, JudgementResult result) => OnNewResult?.Invoke(drawableHitObject, result);
@@ -571,7 +587,7 @@ protected void UpdateComboColour()
         {
             if (!(HitObject is IHasComboInformation combo)) return;
 
-            Color4 colour = combo.GetComboColour(CurrentSkin);
+            Colour4 colour = combo.GetComboColour(CurrentSkin);
 
             // Normalise the combo colour to the given brightness level.
             if (comboColourBrightness.Value != 0)
diff --git a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObject.cs b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObject.cs
index 091b0a1e6fff..3f94bab364db 100644
--- a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObject.cs
+++ b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObject.cs
@@ -5,7 +5,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects.Legacy
 {
@@ -24,13 +24,13 @@ internal abstract class ConvertHitObject : HitObject, IHasCombo, IHasPosition, I
         public float X
         {
             get => Position.X;
-            set => Position = new Vector2(value, Position.Y);
+            set => Position = Position with { X = value };
         }
 
         public float Y
         {
             get => Position.Y;
-            set => Position = new Vector2(Position.X, value);
+            set => Position = Position with { Y = value };
         }
 
         public Vector2 Position { get; set; }
diff --git a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
index 7dde7310cebc..f76ffa52a376 100644
--- a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
+++ b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects.Legacy
 {
diff --git a/osu.Game/Rulesets/Objects/PathControlPoint.cs b/osu.Game/Rulesets/Objects/PathControlPoint.cs
index c137e90428c5..2876f1a205a2 100644
--- a/osu.Game/Rulesets/Objects/PathControlPoint.cs
+++ b/osu.Game/Rulesets/Objects/PathControlPoint.cs
@@ -6,27 +6,25 @@
 using System;
 using Newtonsoft.Json;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects
 {
     public class PathControlPoint : IEquatable<PathControlPoint>
     {
-        private Vector2 position;
-
         /// <summary>
         /// The position of this <see cref="PathControlPoint"/>.
         /// </summary>
         [JsonProperty]
         public Vector2 Position
         {
-            get => position;
+            get;
             set
             {
-                if (value == position)
+                if (value == field)
                     return;
 
-                position = value;
+                field = value;
                 Changed?.Invoke();
             }
         }
diff --git a/osu.Game/Rulesets/Objects/SliderPath.cs b/osu.Game/Rulesets/Objects/SliderPath.cs
index 9fa2d0ec40e7..01fefdf77ba3 100644
--- a/osu.Game/Rulesets/Objects/SliderPath.cs
+++ b/osu.Game/Rulesets/Objects/SliderPath.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Caching;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects
 {
@@ -426,7 +426,7 @@ private void calculateLength()
             for (int i = 0; i < calculatedPath.Count - 1; i++)
             {
                 Vector2 diff = calculatedPath[i + 1] - calculatedPath[i];
-                calculatedLength += diff.Length;
+                calculatedLength += diff.Length();
                 cumulativeLength.Add(calculatedLength);
             }
 
@@ -471,7 +471,7 @@ private void calculateLength()
                 }
 
                 // The direction of the segment to shorten or lengthen
-                Vector2 dir = (calculatedPath[pathEndIndex] - calculatedPath[pathEndIndex - 1]).Normalized();
+                Vector2 dir = Vector2.Normalize(calculatedPath[pathEndIndex] - calculatedPath[pathEndIndex - 1]);
 
                 calculatedPath[pathEndIndex] = calculatedPath[pathEndIndex - 1] + dir * (float)(expectedDistance - cumulativeLength[^1]);
                 cumulativeLength.Add(expectedDistance);
diff --git a/osu.Game/Rulesets/Objects/SliderPathExtensions.cs b/osu.Game/Rulesets/Objects/SliderPathExtensions.cs
index b28225d81bae..1df06e1e3fc3 100644
--- a/osu.Game/Rulesets/Objects/SliderPathExtensions.cs
+++ b/osu.Game/Rulesets/Objects/SliderPathExtensions.cs
@@ -4,7 +4,7 @@
 using System.Linq;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects
 {
diff --git a/osu.Game/Rulesets/Objects/Types/IHasComboInformation.cs b/osu.Game/Rulesets/Objects/Types/IHasComboInformation.cs
index a9d22836ec0e..a62662443c80 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasComboInformation.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasComboInformation.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Bindables;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Objects.Types
 {
@@ -67,7 +67,7 @@ public interface IHasComboInformation : IHasCombo
         /// Retrieves the colour of the combo described by this <see cref="IHasComboInformation"/> object.
         /// </summary>
         /// <param name="skin">The skin to retrieve the combo colour from, if wanted.</param>
-        Color4 GetComboColour(ISkin skin) => GetSkinComboColour(this, skin, ComboIndex);
+        Colour4 GetComboColour(ISkin skin) => GetSkinComboColour(this, skin, ComboIndex);
 
         /// <summary>
         /// Retrieves the colour of the combo described by a given <see cref="IHasComboInformation"/> object from a given skin.
@@ -76,9 +76,9 @@ public interface IHasComboInformation : IHasCombo
         /// <param name="skin">The skin to retrieve the combo colour from.</param>
         /// <param name="comboIndex">The index to retrieve the combo colour with.</param>
         /// <returns></returns>
-        protected static Color4 GetSkinComboColour(IHasComboInformation combo, ISkin skin, int comboIndex)
+        protected static Colour4 GetSkinComboColour(IHasComboInformation combo, ISkin skin, int comboIndex)
         {
-            return skin.GetConfig<SkinComboColourLookup, Color4>(new SkinComboColourLookup(comboIndex, combo))?.Value ?? Color4.White;
+            return skin.GetConfig<SkinComboColourLookup, Colour4>(new SkinComboColourLookup(comboIndex, combo))?.Value ?? Colour4.White;
         }
 
         /// <summary>
diff --git a/osu.Game/Rulesets/Objects/Types/IHasDisplayColour.cs b/osu.Game/Rulesets/Objects/Types/IHasDisplayColour.cs
index 691418ec4813..a5ca6d721667 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasDisplayColour.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasDisplayColour.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Rulesets.Objects.Types
 {
@@ -14,6 +14,6 @@ public interface IHasDisplayColour
         /// <summary>
         /// The current display colour of this hit object.
         /// </summary>
-        Bindable<Color4> DisplayColour { get; }
+        Bindable<Colour4> DisplayColour { get; }
     }
 }
diff --git a/osu.Game/Rulesets/Objects/Types/IHasPathWithRepeats.cs b/osu.Game/Rulesets/Objects/Types/IHasPathWithRepeats.cs
index 279946b44e7f..a6dfce7ba7f1 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasPathWithRepeats.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasPathWithRepeats.cs
@@ -1,7 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects.Types
 {
diff --git a/osu.Game/Rulesets/Objects/Types/IHasPosition.cs b/osu.Game/Rulesets/Objects/Types/IHasPosition.cs
index e9b3cc46eb95..1e4c6e243ffe 100644
--- a/osu.Game/Rulesets/Objects/Types/IHasPosition.cs
+++ b/osu.Game/Rulesets/Objects/Types/IHasPosition.cs
@@ -1,7 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Objects.Types
 {
diff --git a/osu.Game/Rulesets/Ruleset.cs b/osu.Game/Rulesets/Ruleset.cs
index 6a04429beb5a..bfca375af1ad 100644
--- a/osu.Game/Rulesets/Ruleset.cs
+++ b/osu.Game/Rulesets/Ruleset.cs
@@ -33,7 +33,7 @@
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets
 {
diff --git a/osu.Game/Rulesets/Scoring/HitEvent.cs b/osu.Game/Rulesets/Scoring/HitEvent.cs
index 1763190899cc..c5fbcbd3027b 100644
--- a/osu.Game/Rulesets/Scoring/HitEvent.cs
+++ b/osu.Game/Rulesets/Scoring/HitEvent.cs
@@ -5,7 +5,7 @@
 
 using JetBrains.Annotations;
 using osu.Game.Rulesets.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.Scoring
 {
diff --git a/osu.Game/Rulesets/UI/DrawableRuleset.cs b/osu.Game/Rulesets/UI/DrawableRuleset.cs
index 92254a205b92..44f2249c35fa 100644
--- a/osu.Game/Rulesets/UI/DrawableRuleset.cs
+++ b/osu.Game/Rulesets/UI/DrawableRuleset.cs
@@ -32,7 +32,6 @@
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.ClicksPerSecond;
-using osuTK;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -102,17 +101,15 @@ public abstract partial class DrawableRuleset<TObject> : DrawableRuleset, IProvi
         private FrameStabilityContainer frameStabilityContainer;
         private DrawableRulesetDependencies dependencies;
 
-        private bool frameStablePlayback = true;
-
         internal override bool FrameStablePlayback
         {
-            get => frameStablePlayback;
+            get;
             set
             {
-                frameStablePlayback = value;
+                field = value;
                 frameStabilityContainer?.FrameStablePlayback = value;
             }
-        }
+        } = true;
 
         /// <summary>
         /// Creates a ruleset visualisation for the provided ruleset and beatmap.
@@ -379,7 +376,7 @@ private void applyRulesetMods(IReadOnlyList<Mod> mods, OsuConfigManager config)
         protected override bool OnHover(HoverEvent e) => true; // required for IProvideCursor
 
         // only show the cursor when within the playfield, by default.
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => Playfield.ReceivePositionalInputAt(screenSpacePos);
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => Playfield.ReceivePositionalInputAt(screenSpacePos);
 
         CursorContainer IProvideCursor.Cursor => Playfield.Cursor;
 
diff --git a/osu.Game/Rulesets/UI/ModIcon.cs b/osu.Game/Rulesets/UI/ModIcon.cs
index 63ad76aef7cb..b3f074638aaf 100644
--- a/osu.Game/Rulesets/UI/ModIcon.cs
+++ b/osu.Game/Rulesets/UI/ModIcon.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -73,7 +71,7 @@ public IMod Mod
         [Resolved]
         private OverlayColourProvider? colourProvider { get; set; }
 
-        private Color4 backgroundColour;
+        private Colour4 backgroundColour;
 
         private Sprite extendedBackground = null!;
 
@@ -115,7 +113,7 @@ private void load(TextureStore textures)
                     Name = "extended content",
                     Anchor = Anchor.CentreLeft,
                     Origin = Anchor.CentreLeft,
-                    Size = new Vector2(116, MOD_ICON_SIZE.Y),
+                    Size = MOD_ICON_SIZE with { X = 116 },
                     X = MOD_ICON_SIZE.X - 22,
                     Children = new Drawable[]
                     {
diff --git a/osu.Game/Rulesets/UI/ModSwitchSmall.cs b/osu.Game/Rulesets/UI/ModSwitchSmall.cs
index c471a7f3f229..dc33fcb3ad95 100644
--- a/osu.Game/Rulesets/UI/ModSwitchSmall.cs
+++ b/osu.Game/Rulesets/UI/ModSwitchSmall.cs
@@ -11,8 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -27,11 +26,11 @@ public partial class ModSwitchSmall : CompositeDrawable
         private Drawable background = null!;
         private SpriteIcon? modIcon;
 
-        private Color4 activeForegroundColour;
-        private Color4 inactiveForegroundColour;
+        private Colour4 activeForegroundColour;
+        private Colour4 inactiveForegroundColour;
 
-        private Color4 activeBackgroundColour;
-        private Color4 inactiveBackgroundColour;
+        private Colour4 activeBackgroundColour;
+        private Colour4 inactiveBackgroundColour;
 
         public ModSwitchSmall(IMod mod)
         {
diff --git a/osu.Game/Rulesets/UI/ModSwitchTiny.cs b/osu.Game/Rulesets/UI/ModSwitchTiny.cs
index 1cfa3de55a18..8eb785fedae0 100644
--- a/osu.Game/Rulesets/UI/ModSwitchTiny.cs
+++ b/osu.Game/Rulesets/UI/ModSwitchTiny.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -13,7 +12,6 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Mods;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -30,11 +28,11 @@ public partial class ModSwitchTiny : CompositeDrawable
         private readonly Box background;
         private readonly OsuSpriteText acronymText;
 
-        private Color4 activeForegroundColour;
-        private Color4 inactiveForegroundColour;
+        private Colour4 activeForegroundColour;
+        private Colour4 inactiveForegroundColour;
 
-        private Color4 activeBackgroundColour;
-        private Color4 inactiveBackgroundColour;
+        private Colour4 activeBackgroundColour;
+        private Colour4 inactiveBackgroundColour;
 
         private readonly CircularContainer extendedContent;
         private readonly Box extendedBackground;
diff --git a/osu.Game/Rulesets/UI/ModTooltip.cs b/osu.Game/Rulesets/UI/ModTooltip.cs
index 6f603907989f..bb7f7247463a 100644
--- a/osu.Game/Rulesets/UI/ModTooltip.cs
+++ b/osu.Game/Rulesets/UI/ModTooltip.cs
@@ -3,7 +3,6 @@
 
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Mods;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -42,7 +40,7 @@ private void load()
             EdgeEffect = new EdgeEffectParameters
             {
                 Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(0.2f),
+                Colour = Colour4.Black.Opacity(0.2f),
                 Radius = 10f,
             };
 
diff --git a/osu.Game/Rulesets/UI/Playfield.cs b/osu.Game/Rulesets/UI/Playfield.cs
index 495f49df061d..bbd22a30e7ff 100644
--- a/osu.Game/Rulesets/UI/Playfield.cs
+++ b/osu.Game/Rulesets/UI/Playfield.cs
@@ -23,7 +23,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Pooling;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -432,7 +432,6 @@ private IDrawablePool prepareDrawableHitObjectPool(HitObject hitObject)
         {
             var lookupType = hitObject.GetType();
 
-
             // Tests may add derived hitobject instances for which pools don't exist. Try to find any applicable pool and dynamically assign the type if the pool exists.
             if (!pools.TryGetValue(lookupType, out var pool))
             {
diff --git a/osu.Game/Rulesets/UI/PlayfieldBorder.cs b/osu.Game/Rulesets/UI/PlayfieldBorder.cs
index e87421fc88f3..7df31406ecc8 100644
--- a/osu.Game/Rulesets/UI/PlayfieldBorder.cs
+++ b/osu.Game/Rulesets/UI/PlayfieldBorder.cs
@@ -9,8 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Platform;
 using osu.Game.Extensions;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
@@ -123,7 +122,7 @@ public Line(Direction direction)
             {
                 this.direction = direction;
 
-                Colour = Color4.White;
+                Colour = Colour4.White;
                 // starting in relative avoids the framework thinking it knows best and setting the width to 1 initially.
 
                 switch (direction)
diff --git a/osu.Game/Rulesets/UI/ReplayRecorder.cs b/osu.Game/Rulesets/UI/ReplayRecorder.cs
index 8829c15a21e8..6055fd257e93 100644
--- a/osu.Game/Rulesets/UI/ReplayRecorder.cs
+++ b/osu.Game/Rulesets/UI/ReplayRecorder.cs
@@ -14,7 +14,7 @@
 using osu.Game.Online.Spectator;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI
 {
diff --git a/osu.Game/Rulesets/UI/RulesetInputManager.cs b/osu.Game/Rulesets/UI/RulesetInputManager.cs
index 21a795007b9f..d62a035f53f3 100644
--- a/osu.Game/Rulesets/UI/RulesetInputManager.cs
+++ b/osu.Game/Rulesets/UI/RulesetInputManager.cs
@@ -20,7 +20,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.ClicksPerSecond;
-using osuTK;
+using System.Numerics;
 using static osu.Game.Input.Handlers.ReplayInputHandler;
 
 namespace osu.Game.Rulesets.UI
@@ -102,7 +102,6 @@ public override void HandleInputStateChange(InputStateChangeEvent inputStateChan
 
         #region IHasReplayHandler
 
-
         public ReplayInputHandler? ReplayInputHandler
         {
             get;
@@ -235,7 +234,7 @@ private class ReplayStateReset : IInput
             public void Apply(InputState state, IInputStateChangeHandler handler)
             {
                 if (!(state is RulesetInputManagerInputState<T> inputState))
-                    throw new InvalidOperationException($"{nameof(ReplayState<T>)} should only be applied to a {nameof(RulesetInputManagerInputState<T>)}");
+                    throw new InvalidOperationException($"{nameof(ReplayState<>)} should only be applied to a {nameof(RulesetInputManagerInputState<>)}");
 
                 new MouseButtonInput([], state.Mouse.Buttons).Apply(state, handler);
                 new KeyboardKeyInput([], state.Keyboard.Keys).Apply(state, handler);
diff --git a/osu.Game/Rulesets/UI/Scrolling/DrawableScrollingRuleset.cs b/osu.Game/Rulesets/UI/Scrolling/DrawableScrollingRuleset.cs
index 6c2750c29e09..5da05d803fff 100644
--- a/osu.Game/Rulesets/UI/Scrolling/DrawableScrollingRuleset.cs
+++ b/osu.Game/Rulesets/UI/Scrolling/DrawableScrollingRuleset.cs
@@ -105,7 +105,7 @@ private void load()
         {
             updateScrollAlgorithm();
 
-            double lastObjectTime = Beatmap.HitObjects.Any() ? Beatmap.GetLastObjectTime() : double.MaxValue;
+            double lastObjectTime = Beatmap.HitObjects.Count > 0 ? Beatmap.GetLastObjectTime() : double.MaxValue;
             double baseBeatLength = TimingControlPoint.DEFAULT_BEAT_LENGTH;
 
             if (RelativeScaleBeatLengths)
@@ -166,7 +166,7 @@ protected override void LoadComplete()
             base.LoadComplete();
 
             if (!(Playfield is ScrollingPlayfield))
-                throw new ArgumentException($"{nameof(Playfield)} must be a {nameof(ScrollingPlayfield)} when using {nameof(DrawableScrollingRuleset<TObject>)}.");
+                throw new ArgumentException($"{nameof(Playfield)} must be a {nameof(ScrollingPlayfield)} when using {nameof(DrawableScrollingRuleset<>)}.");
         }
 
         public ScrollVisualisationMethod VisualisationMethod
diff --git a/osu.Game/Rulesets/UI/Scrolling/ScrollingHitObjectContainer.cs b/osu.Game/Rulesets/UI/Scrolling/ScrollingHitObjectContainer.cs
index 8b0076afa168..1607d3ccc3b0 100644
--- a/osu.Game/Rulesets/UI/Scrolling/ScrollingHitObjectContainer.cs
+++ b/osu.Game/Rulesets/UI/Scrolling/ScrollingHitObjectContainer.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI.Scrolling.Algorithms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI.Scrolling
 {
diff --git a/osu.Game/Rulesets/UI/Scrolling/ScrollingPlayfield.cs b/osu.Game/Rulesets/UI/Scrolling/ScrollingPlayfield.cs
index 1a17349d123f..28fd89b57991 100644
--- a/osu.Game/Rulesets/UI/Scrolling/ScrollingPlayfield.cs
+++ b/osu.Game/Rulesets/UI/Scrolling/ScrollingPlayfield.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Rulesets.UI.Scrolling
 {
diff --git a/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs b/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
index 8ad7078309a2..2e68a9dd08e3 100644
--- a/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
+++ b/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
@@ -22,7 +22,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 using SharpCompress.Compressors.LZMA;
 
 namespace osu.Game.Scoring.Legacy
diff --git a/osu.Game/Screens/BackgroundScreen.cs b/osu.Game/Screens/BackgroundScreen.cs
index 1c986c1b2305..e66b21187e14 100644
--- a/osu.Game/Screens/BackgroundScreen.cs
+++ b/osu.Game/Screens/BackgroundScreen.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
 using osu.Framework.Screens;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens
 {
diff --git a/osu.Game/Screens/Backgrounds/BackgroundScreenBeatmap.cs b/osu.Game/Screens/Backgrounds/BackgroundScreenBeatmap.cs
index d88cce4c3880..e8579540de32 100644
--- a/osu.Game/Screens/Backgrounds/BackgroundScreenBeatmap.cs
+++ b/osu.Game/Screens/Backgrounds/BackgroundScreenBeatmap.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Backgrounds
 {
@@ -196,6 +196,16 @@ protected override void UpdateVisuals()
                 base.UpdateVisuals();
 
                 Background?.BlurTo(blurTarget, BACKGROUND_FADE_DURATION, Easing.OutQuint);
+
+                // When the background is fully dimmed to black (and not replaced by a storyboard)
+                // there is no visual contribution, so fade the content to alpha=0. This makes the
+                // framework skip the entire background draw subtree (IsPresent=false), saving GPU
+                // fill rate every frame. Do not apply when StoryboardReplacesBackground is active
+                // because tests (and the UI) rely on Content.Alpha==1 to detect background visibility.
+                // base.UpdateVisuals() already fades content back to 1 whenever DimLevel drops
+                // below 1 (e.g. during break lightening), so the background reappears correctly.
+                if (ContentDisplayed && DimLevel >= 1f && !StoryboardReplacesBackground.Value)
+                    Content.FadeTo(0, BACKGROUND_FADE_DURATION, Easing.OutQuint);
             }
         }
     }
diff --git a/osu.Game/Screens/Backgrounds/BackgroundScreenBlack.cs b/osu.Game/Screens/Backgrounds/BackgroundScreenBlack.cs
index 0a53b0d77b66..5210b08edd8f 100644
--- a/osu.Game/Screens/Backgrounds/BackgroundScreenBlack.cs
+++ b/osu.Game/Screens/Backgrounds/BackgroundScreenBlack.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Screens;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Backgrounds
 {
@@ -19,7 +18,7 @@ public BackgroundScreenBlack(double delayBeforeBlack = 0)
 
             InternalChild = box = new Box
             {
-                Colour = Color4.Black,
+                Colour = Colour4.Black,
                 RelativeSizeAxes = Axes.Both,
             };
 
diff --git a/osu.Game/Screens/Backgrounds/EditorBackgroundScreen.cs b/osu.Game/Screens/Backgrounds/EditorBackgroundScreen.cs
index e0b71151c60c..841197e48d9e 100644
--- a/osu.Game/Screens/Backgrounds/EditorBackgroundScreen.cs
+++ b/osu.Game/Screens/Backgrounds/EditorBackgroundScreen.cs
@@ -13,7 +13,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Screens.Edit;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Backgrounds
 {
@@ -47,7 +46,7 @@ public EditorBackgroundScreen(EditorBeatmap editorBeatmap)
                     // There's probably a better way to do this, but it's high effort.
                     blackBox = new Box
                     {
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                     content = new EditorSkinProvidingContainer(editorBeatmap)
diff --git a/osu.Game/Screens/Edit/BindableBeatDivisor.cs b/osu.Game/Screens/Edit/BindableBeatDivisor.cs
index 83acc2622f3d..de2d166466aa 100644
--- a/osu.Game/Screens/Edit/BindableBeatDivisor.cs
+++ b/osu.Game/Screens/Edit/BindableBeatDivisor.cs
@@ -7,8 +7,8 @@
 using osu.Framework.Bindables;
 using osu.Game.Graphics;
 using osu.Game.Screens.Edit.Compose.Components;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.Edit
 {
@@ -101,12 +101,12 @@ public override void BindTo(Bindable<int> them)
         /// <param name="beatDivisor">The beat divisor.</param>
         /// <param name="colours">The set of colours.</param>
         /// <returns>The applicable colour from <paramref name="colours"/> for <paramref name="beatDivisor"/>.</returns>
-        public static Color4 GetColourFor(int beatDivisor, OsuColour colours)
+        public static Colour4 GetColourFor(int beatDivisor, OsuColour colours)
         {
             switch (beatDivisor)
             {
                 case 1:
-                    return Color4.White;
+                    return Colour4.White;
 
                 case 2:
                     return colours.Red;
@@ -135,7 +135,7 @@ public static Color4 GetColourFor(int beatDivisor, OsuColour colours)
                     return colours.GreenLight;
 
                 default:
-                    return Color4.Red;
+                    return Colour4.Red;
             }
         }
 
diff --git a/osu.Game/Screens/Edit/BottomBar.cs b/osu.Game/Screens/Edit/BottomBar.cs
index 49f3d704bc44..a8a3a34c9a17 100644
--- a/osu.Game/Screens/Edit/BottomBar.cs
+++ b/osu.Game/Screens/Edit/BottomBar.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,8 +11,7 @@
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Components;
 using osu.Game.Screens.Edit.Components.Timelines.Summary;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit
 {
@@ -37,7 +35,7 @@ private void load(Editor editor)
             Masking = true;
             EdgeEffect = new EdgeEffectParameters
             {
-                Colour = Color4.Black.Opacity(0.2f),
+                Colour = Colour4.Black.Opacity(0.2f),
                 Type = EdgeEffectType.Shadow,
                 Radius = 10f,
             };
diff --git a/osu.Game/Screens/Edit/Components/BottomBarContainer.cs b/osu.Game/Screens/Edit/Components/BottomBarContainer.cs
index 37337bc79fe9..61c8b379c456 100644
--- a/osu.Game/Screens/Edit/Components/BottomBarContainer.cs
+++ b/osu.Game/Screens/Edit/Components/BottomBarContainer.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit.Components
 {
@@ -31,7 +30,7 @@ public BottomBarContainer()
                 Background = new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Transparent,
+                    Colour = Colour4.Transparent,
                 },
                 content = new Container
                 {
diff --git a/osu.Game/Screens/Edit/Components/EditorToolButton.cs b/osu.Game/Screens/Edit/Components/EditorToolButton.cs
index 655036268706..ccc263a056ac 100644
--- a/osu.Game/Screens/Edit/Components/EditorToolButton.cs
+++ b/osu.Game/Screens/Edit/Components/EditorToolButton.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components
 {
@@ -27,10 +25,10 @@ public partial class EditorToolButton : OsuButton, IHasPopover
         private readonly Func<Drawable> createIcon;
         private readonly Func<Popover?> createPopover;
 
-        private Color4 defaultBackgroundColour;
-        private Color4 defaultIconColour;
-        private Color4 selectedBackgroundColour;
-        private Color4 selectedIconColour;
+        private Colour4 defaultBackgroundColour;
+        private Colour4 defaultIconColour;
+        private Colour4 selectedBackgroundColour;
+        private Colour4 selectedIconColour;
 
         private Drawable icon = null!;
 
diff --git a/osu.Game/Screens/Edit/Components/FormSampleSet.cs b/osu.Game/Screens/Edit/Components/FormSampleSet.cs
index 370d36dd8cd9..cc01fdd67eb3 100644
--- a/osu.Game/Screens/Edit/Components/FormSampleSet.cs
+++ b/osu.Game/Screens/Edit/Components/FormSampleSet.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -28,8 +27,7 @@
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components
 {
@@ -205,7 +203,7 @@ public partial class SampleButton : OsuButton, IHasPopover, IHasContextMenu
 
             protected override float HoverLayerFinalAlpha => 0;
 
-            private Color4? triangleGradientSecondColour;
+            private Colour4? triangleGradientSecondColour;
             private SpriteIcon icon = null!;
 
             [Resolved]
@@ -276,10 +274,8 @@ private void updateState()
 
                 recycleSamples();
 
-                if (triangles == null)
-                    return;
-
-                triangles.Colour = ColourInfo.GradientVertical(triangleGradientSecondColour.Value, BackgroundColour);
+                if (triangles != null)
+                    triangles.Colour = ColourInfo.GradientVertical(triangleGradientSecondColour ?? default, BackgroundColour);
             }
 
             private void recycleSamples() => Schedule(() =>
diff --git a/osu.Game/Screens/Edit/Components/Menus/EditorMenuBar.cs b/osu.Game/Screens/Edit/Components/Menus/EditorMenuBar.cs
index 76b8811b899e..935488183bd6 100644
--- a/osu.Game/Screens/Edit/Components/Menus/EditorMenuBar.cs
+++ b/osu.Game/Screens/Edit/Components/Menus/EditorMenuBar.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.Menus
 {
diff --git a/osu.Game/Screens/Edit/Components/Menus/EditorScreenSwitcherControl.cs b/osu.Game/Screens/Edit/Components/Menus/EditorScreenSwitcherControl.cs
index 2b0b1ea2190c..1cc15fe94fc3 100644
--- a/osu.Game/Screens/Edit/Components/Menus/EditorScreenSwitcherControl.cs
+++ b/osu.Game/Screens/Edit/Components/Menus/EditorScreenSwitcherControl.cs
@@ -8,8 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.Menus
 {
@@ -44,8 +43,8 @@ private void load(OverlayColourProvider colourProvider)
         private partial class TabItem : OsuTabItem
         {
             private readonly Box background;
-            private Color4 backgroundIdleColour;
-            private Color4 backgroundHoverColour;
+            private Colour4 backgroundIdleColour;
+            private Colour4 backgroundHoverColour;
 
             public TabItem(EditorScreenMode value)
                 : base(value)
diff --git a/osu.Game/Screens/Edit/Components/PlaybackControl.cs b/osu.Game/Screens/Edit/Components/PlaybackControl.cs
index 25951f051dbe..0b25959d59bd 100644
--- a/osu.Game/Screens/Edit/Components/PlaybackControl.cs
+++ b/osu.Game/Screens/Edit/Components/PlaybackControl.cs
@@ -19,9 +19,8 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Components
 {
@@ -202,8 +201,8 @@ public PlaybackTabItem(double value)
                     };
                 }
 
-                private Color4 hoveredColour;
-                private Color4 normalColour;
+                private Colour4 hoveredColour;
+                private Colour4 normalColour;
 
                 [BackgroundDependencyLoader]
                 private void load(OverlayColourProvider colourProvider)
diff --git a/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButton.cs b/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButton.cs
index 29bb24eb432e..6f786ec7aa55 100644
--- a/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButton.cs
+++ b/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButton.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
@@ -12,8 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.RadioButtons
 {
@@ -26,10 +24,10 @@ public partial class EditorRadioButton : OsuButton, IHasTooltip
 
         public readonly RadioButton Button;
 
-        private Color4 defaultBackgroundColour;
-        private Color4 defaultIconColour;
-        private Color4 selectedBackgroundColour;
-        private Color4 selectedIconColour;
+        private Colour4 defaultBackgroundColour;
+        private Colour4 defaultIconColour;
+        private Colour4 selectedBackgroundColour;
+        private Colour4 selectedIconColour;
 
         private Drawable icon = null!;
 
diff --git a/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButtonCollection.cs b/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButtonCollection.cs
index 67f18248376f..be3b69792577 100644
--- a/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButtonCollection.cs
+++ b/osu.Game/Screens/Edit/Components/RadioButtons/EditorRadioButtonCollection.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.RadioButtons
 {
diff --git a/osu.Game/Screens/Edit/Components/TernaryButtons/DrawableTernaryButton.cs b/osu.Game/Screens/Edit/Components/TernaryButtons/DrawableTernaryButton.cs
index f9c6ee6b4363..4e4589487a89 100644
--- a/osu.Game/Screens/Edit/Components/TernaryButtons/DrawableTernaryButton.cs
+++ b/osu.Game/Screens/Edit/Components/TernaryButtons/DrawableTernaryButton.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.TernaryButtons
 {
@@ -42,10 +40,10 @@ public required LocalisableString Description
         /// </summary>
         public Func<Drawable>? CreateIcon { get; init; }
 
-        private Color4 defaultBackgroundColour;
-        private Color4 defaultIconColour;
-        private Color4 selectedBackgroundColour;
-        private Color4 selectedIconColour;
+        private Colour4 defaultBackgroundColour;
+        private Colour4 defaultIconColour;
+        private Colour4 selectedBackgroundColour;
+        private Colour4 selectedIconColour;
 
         public Drawable Icon { get; private set; } = null!;
 
diff --git a/osu.Game/Screens/Edit/Components/TernaryButtons/NewComboTernaryButton.cs b/osu.Game/Screens/Edit/Components/TernaryButtons/NewComboTernaryButton.cs
index 2f299ada9ab0..484ca45ba2e3 100644
--- a/osu.Game/Screens/Edit/Components/TernaryButtons/NewComboTernaryButton.cs
+++ b/osu.Game/Screens/Edit/Components/TernaryButtons/NewComboTernaryButton.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -23,7 +22,7 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Edit.Components.TernaryButtons
 {
diff --git a/osu.Game/Screens/Edit/Components/TimeInfoContainer.cs b/osu.Game/Screens/Edit/Components/TimeInfoContainer.cs
index 320d27819a04..406d75190167 100644
--- a/osu.Game/Screens/Edit/Components/TimeInfoContainer.cs
+++ b/osu.Game/Screens/Edit/Components/TimeInfoContainer.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components
 {
diff --git a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
index 1fedd6f589af..4efddd3bebeb 100644
--- a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
+++ b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/MarkerPart.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
 {
diff --git a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/TimelinePart.cs b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/TimelinePart.cs
index 9238b3972fa3..afd15c7e3dab 100644
--- a/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/TimelinePart.cs
+++ b/osu.Game/Screens/Edit/Components/Timelines/Summary/Parts/TimelinePart.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.Timelines.Summary.Parts
 {
diff --git a/osu.Game/Screens/Edit/Components/Timelines/Summary/SummaryTimeline.cs b/osu.Game/Screens/Edit/Components/Timelines/Summary/SummaryTimeline.cs
index 568137cce15e..dcf6164fe7c5 100644
--- a/osu.Game/Screens/Edit/Components/Timelines/Summary/SummaryTimeline.cs
+++ b/osu.Game/Screens/Edit/Components/Timelines/Summary/SummaryTimeline.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Parts;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Components.Timelines.Summary
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/BeatDivisorControl.cs b/osu.Game/Screens/Edit/Compose/Components/BeatDivisorControl.cs
index 6fc845f698ad..118e2c3b34a4 100644
--- a/osu.Game/Screens/Edit/Compose/Components/BeatDivisorControl.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/BeatDivisorControl.cs
@@ -23,9 +23,8 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -376,7 +375,7 @@ public ChevronButton()
             private void load(OsuColour colours, OverlayColourProvider colourProvider)
             {
                 IconColour = colourProvider.Light3;
-                IconHoverColour = Color4.White;
+                IconHoverColour = Colour4.White;
                 HoverColour = colours.Gray6;
                 FlashColour = colours.Gray9;
             }
@@ -550,7 +549,7 @@ private void load()
                         {
                             RelativeSizeAxes = Axes.Both,
                             EdgeSmoothness = new Vector2(1),
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                         }
                     };
                 }
diff --git a/osu.Game/Screens/Edit/Compose/Components/BeatSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/BeatSnapGrid.cs
index f1b7951999c8..fbbb91038e2c 100644
--- a/osu.Game/Screens/Edit/Compose/Components/BeatSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/BeatSnapGrid.cs
@@ -16,7 +16,6 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -122,7 +121,7 @@ private void createLines()
                     timingPoint = nextTimingPoint;
                 }
 
-                Color4 colour = BindableBeatDivisor.GetColourFor(
+                Colour4 colour = BindableBeatDivisor.GetColourFor(
                     BindableBeatDivisor.GetDivisorForBeatIndex(beat, beatDivisor.Value), colours);
 
                 foreach (var grid in grids)
diff --git a/osu.Game/Screens/Edit/Compose/Components/BlueprintContainer.cs b/osu.Game/Screens/Edit/Compose/Components/BlueprintContainer.cs
index d4c70d53df5c..238df1c0ec3a 100644
--- a/osu.Game/Screens/Edit/Compose/Components/BlueprintContainer.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/BlueprintContainer.cs
@@ -18,8 +18,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/CircularDistanceSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/CircularDistanceSnapGrid.cs
index 8c7afd2aebab..f62f576a9832 100644
--- a/osu.Game/Screens/Edit/Compose/Components/CircularDistanceSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/CircularDistanceSnapGrid.cs
@@ -3,14 +3,12 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -48,7 +46,7 @@ protected override void CreateContent()
 
             float dx = Math.Max(StartPosition.X, DrawWidth - StartPosition.X);
             float dy = Math.Max(StartPosition.Y, DrawHeight - StartPosition.Y);
-            float maxDistance = new Vector2(dx, dy).Length;
+            float maxDistance = new Vector2(dx, dy).Length();
             int requiredCircles = Math.Min(MaxIntervals, (int)(maxDistance / DistanceBetweenTicks));
 
             // We need to offset the drawn lines to the next valid snap for the currently selected divisor.
@@ -88,7 +86,7 @@ public override (Vector2 position, double time) GetSnappedPosition(Vector2 posit
             if (travelVector == Vector2.Zero)
                 travelVector = new Vector2(0, -1);
 
-            float travelLength = travelVector.Length;
+            float travelLength = travelVector.Length();
 
             // FindSnappedDistance will always round down, but we want to potentially round upwards.
             travelLength += DistanceBetweenTicks / 2;
@@ -130,9 +128,9 @@ private partial class Ring : CircularProgress
             private readonly double startTime;
             private readonly IHasSliderVelocity? sliderVelocitySource;
 
-            private readonly Color4 baseColour;
+            private readonly Colour4 baseColour;
 
-            public Ring(double startTime, Color4 baseColour, IHasSliderVelocity? sliderVelocitySource)
+            public Ring(double startTime, Colour4 baseColour, IHasSliderVelocity? sliderVelocitySource)
             {
                 this.startTime = startTime;
                 this.sliderVelocitySource = sliderVelocitySource;
diff --git a/osu.Game/Screens/Edit/Compose/Components/CircularPositionSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/CircularPositionSnapGrid.cs
index 8e63d6bcc0df..2776fe55bbdf 100644
--- a/osu.Game/Screens/Edit/Compose/Components/CircularPositionSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/CircularPositionSnapGrid.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -35,7 +35,7 @@ protected override void CreateContent()
             // Calculate the required number of circles based on the maximum distance from the origin to the edge of the grid.
             float dx = Math.Max(StartPosition.Value.X, DrawWidth - StartPosition.Value.X);
             float dy = Math.Max(StartPosition.Value.Y, DrawHeight - StartPosition.Value.Y);
-            float maxDistance = new Vector2(dx, dy).Length;
+            float maxDistance = new Vector2(dx, dy).Length();
             // We need to add one because the first circle starts at zero radius.
             int requiredCircles = (int)(maxDistance / Spacing.Value) + 1;
 
@@ -86,10 +86,10 @@ public override Vector2 GetSnappedPosition(Vector2 original)
         {
             Vector2 relativeToStart = original - StartPosition.Value;
 
-            if (relativeToStart.LengthSquared < Precision.FLOAT_EPSILON)
+            if (relativeToStart.LengthSquared() < Precision.FLOAT_EPSILON)
                 return StartPosition.Value;
 
-            float length = relativeToStart.Length;
+            float length = relativeToStart.Length();
             float wantedLength = MathF.Round(length / Spacing.Value) * Spacing.Value;
 
             return StartPosition.Value + Vector2.Multiply(relativeToStart, wantedLength / length);
diff --git a/osu.Game/Screens/Edit/Compose/Components/ComposeBlueprintContainer.cs b/osu.Game/Screens/Edit/Compose/Components/ComposeBlueprintContainer.cs
index 1bc817797153..78433aa23290 100644
--- a/osu.Game/Screens/Edit/Compose/Components/ComposeBlueprintContainer.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/ComposeBlueprintContainer.cs
@@ -26,7 +26,6 @@
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit.Components.TernaryButtons;
-using osuTK;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -50,7 +49,7 @@ public abstract partial class ComposeBlueprintContainer : EditorBlueprintContain
         /// Positional input must be received outside the container's bounds,
         /// in order to handle composer blueprints which are partially offscreen.
         /// </remarks>
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => editorScreen?.MainContent.ReceivePositionalInputAt(screenSpacePos) ?? base.ReceivePositionalInputAt(screenSpacePos);
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => editorScreen?.MainContent.ReceivePositionalInputAt(screenSpacePos) ?? base.ReceivePositionalInputAt(screenSpacePos);
 
         protected override IEnumerable<SelectionBlueprint<HitObject>> ApplySelectionOrder(IEnumerable<SelectionBlueprint<HitObject>> blueprints) =>
             base.ApplySelectionOrder(blueprints)
diff --git a/osu.Game/Screens/Edit/Compose/Components/DistanceSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/DistanceSnapGrid.cs
index 8322c67defa4..f693b3780934 100644
--- a/osu.Game/Screens/Edit/Compose/Components/DistanceSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/DistanceSnapGrid.cs
@@ -7,7 +7,6 @@
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Layout;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -145,7 +143,7 @@ protected override void Update()
         /// </summary>
         /// <param name="placementIndex">The 0-based beat index from the point of placement.</param>
         /// <returns>The applicable colour.</returns>
-        protected Color4 GetColourForIndexFromPlacement(int placementIndex)
+        protected Colour4 GetColourForIndexFromPlacement(int placementIndex)
         {
             var timingPoint = Beatmap.ControlPointInfo.TimingPointAt(StartTime);
             double beatLength = timingPoint.BeatLength / beatDivisor.Value;
diff --git a/osu.Game/Screens/Edit/Compose/Components/DragBox.cs b/osu.Game/Screens/Edit/Compose/Components/DragBox.cs
index 82ba05c94073..198148956469 100644
--- a/osu.Game/Screens/Edit/Compose/Components/DragBox.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/DragBox.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Framework.Layout;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -47,8 +47,8 @@ private void load()
         /// <param name="e">The mouse event.</param>
         public virtual void HandleDrag(MouseButtonEvent e)
         {
-            Box.Position = Vector2.ComponentMin(e.MouseDownPosition, e.MousePosition);
-            Box.Size = Vector2.ComponentMax(e.MouseDownPosition, e.MousePosition) - Box.Position;
+            Box.Position = Vector2.Min(e.MouseDownPosition, e.MousePosition);
+            Box.Size = Vector2.Max(e.MouseDownPosition, e.MousePosition) - Box.Position;
         }
 
         public Visibility State
diff --git a/osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs b/osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs
index 39c8f6664839..494b04bea0fc 100644
--- a/osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/EditorSelectionHandler.cs
@@ -17,7 +17,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/LinedPositionSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/LinedPositionSnapGrid.cs
index 79b4fa2841b7..f1d97977c1fd 100644
--- a/osu.Game/Screens/Edit/Compose/Components/LinedPositionSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/LinedPositionSnapGrid.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -22,7 +22,7 @@ protected void GenerateGridLines(Vector2 step, Vector2 drawSize)
 
             // Make lines the same width independent of display resolution.
             float lineWidth = DrawWidth / ScreenSpaceDrawQuad.Width;
-            float rotation = MathHelper.RadiansToDegrees(MathF.Atan2(step.Y, step.X));
+            float rotation = float.RadiansToDegrees(MathF.Atan2(step.Y, step.X));
 
             List<Box> generatedLines = new List<Box>();
 
@@ -31,7 +31,7 @@ protected void GenerateGridLines(Vector2 step, Vector2 drawSize)
                 Vector2 currentPosition = StartPosition.Value + index * step;
                 index++;
 
-                if (!lineDefinitelyIntersectsBox(currentPosition, step.PerpendicularLeft, drawSize, out var p1, out var p2))
+                if (!lineDefinitelyIntersectsBox(currentPosition, step.PerpendicularLeft(), drawSize, out var p1, out var p2))
                 {
                     if (!isMovingTowardsBox(currentPosition, step, drawSize))
                         break;
@@ -64,8 +64,8 @@ protected void GenerateGridLines(Vector2 step, Vector2 drawSize)
 
         private bool isMovingTowardsBox(Vector2 currentPosition, Vector2 step, Vector2 box)
         {
-            return (currentPosition + step).LengthSquared < currentPosition.LengthSquared ||
-                   (currentPosition + step - box).LengthSquared < (currentPosition - box).LengthSquared;
+            return (currentPosition + step).LengthSquared() < currentPosition.LengthSquared() ||
+                   (currentPosition + step - box).LengthSquared() < (currentPosition - box).LengthSquared();
         }
 
         /// <summary>
@@ -89,7 +89,7 @@ private bool lineDefinitelyIntersectsBox(Vector2 lineStart, Vector2 lineDir, Vec
                 if (!Precision.DefinitelyBigger(lineStart.X, 0) || !Precision.DefinitelyBigger(box.X, lineStart.X))
                     return false;
 
-                p1 = new Vector2(lineStart.X, 0);
+                p1 = lineStart with { Y = 0 };
                 p2 = new Vector2(lineStart.X, box.Y);
                 return true;
             }
@@ -100,7 +100,7 @@ private bool lineDefinitelyIntersectsBox(Vector2 lineStart, Vector2 lineDir, Vec
                 if (!Precision.DefinitelyBigger(lineStart.Y, 0) || !Precision.DefinitelyBigger(box.Y, lineStart.Y))
                     return false;
 
-                p1 = new Vector2(0, lineStart.Y);
+                p1 = lineStart with { X = 0 };
                 p2 = new Vector2(box.X, lineStart.Y);
                 return true;
             }
@@ -115,9 +115,9 @@ private bool lineDefinitelyIntersectsBox(Vector2 lineStart, Vector2 lineDir, Vec
             if (0 <= b && b <= box.Y)
                 p.Add(new Vector2(0, b));
             if (0 <= (box.Y - b) * mInv && (box.Y - b) * mInv <= box.X)
-                p.Add(new Vector2((box.Y - b) * mInv, box.Y));
+                p.Add(box with { X = (box.Y - b) * mInv });
             if (0 <= m * box.X + b && m * box.X + b <= box.Y)
-                p.Add(new Vector2(box.X, m * box.X + b));
+                p.Add(box with { Y = m * box.X + b });
             if (0 <= -b * mInv && -b * mInv <= box.X)
                 p.Add(new Vector2(-b * mInv, 0));
 
@@ -132,8 +132,8 @@ private bool lineDefinitelyIntersectsBox(Vector2 lineStart, Vector2 lineDir, Vec
                     }
                     else
                     {
-                        p1 = new Vector2(0, box.Y);
-                        p2 = new Vector2(box.X, 0);
+                        p1 = box with { X = 0 };
+                        p2 = box with { Y = 0 };
                     }
 
                     break;
diff --git a/osu.Game/Screens/Edit/Compose/Components/MoveSelectionEvent.cs b/osu.Game/Screens/Edit/Compose/Components/MoveSelectionEvent.cs
index 4515e4d7bece..c3d000f4ed1f 100644
--- a/osu.Game/Screens/Edit/Compose/Components/MoveSelectionEvent.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/MoveSelectionEvent.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Edit;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/PositionSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/PositionSnapGrid.cs
index cbdf02488a0d..92b9e2a41c18 100644
--- a/osu.Game/Screens/Edit/Compose/Components/PositionSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/PositionSnapGrid.cs
@@ -2,13 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Layout;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -24,7 +22,7 @@ public abstract partial class PositionSnapGrid : BufferedContainer
         protected PositionSnapGrid()
             : base(cachedFrameBuffer: true)
         {
-            BackgroundColour = Color4.White.Opacity(0);
+            BackgroundColour = Colour4.White.Opacity(0);
 
             StartPosition.BindValueChanged(_ => GridCache.Invalidate());
 
diff --git a/osu.Game/Screens/Edit/Compose/Components/RectangularPositionSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/RectangularPositionSnapGrid.cs
index 3bf0ef8ac312..28885e848845 100644
--- a/osu.Game/Screens/Edit/Compose/Components/RectangularPositionSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/RectangularPositionSnapGrid.cs
@@ -2,9 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using osu.Framework.Bindables;
 using osu.Game.Utils;
-using osuTK;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -29,13 +29,13 @@ public RectangularPositionSnapGrid()
         protected override void CreateContent()
         {
             var drawSize = DrawSize;
-            var rot = Quaternion.FromAxisAngle(Vector3.UnitZ, MathHelper.DegreesToRadians(GridLineRotation.Value));
+            var rot = Matrix3x2.CreateRotation(float.DegreesToRadians(GridLineRotation.Value));
 
-            GenerateGridLines(Vector2.Transform(new Vector2(0, -Spacing.Value.Y), rot), drawSize);
-            GenerateGridLines(Vector2.Transform(new Vector2(0, Spacing.Value.Y), rot), drawSize);
+            GenerateGridLines(Vector2.Transform(-Spacing.Value with { X = 0 }, rot), drawSize);
+            GenerateGridLines(Vector2.Transform(Spacing.Value with { X = 0 }, rot), drawSize);
 
-            GenerateGridLines(Vector2.Transform(new Vector2(-Spacing.Value.X, 0), rot), drawSize);
-            GenerateGridLines(Vector2.Transform(new Vector2(Spacing.Value.X, 0), rot), drawSize);
+            GenerateGridLines(Vector2.Transform(-Spacing.Value with { Y = 0 }, rot), drawSize);
+            GenerateGridLines(Vector2.Transform(Spacing.Value with { Y = 0 }, rot), drawSize);
 
             GenerateOutline(drawSize);
         }
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
index 045c88b71512..4baeda4b0ef4 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
@@ -12,8 +12,8 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxButton.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxButton.cs
index 8f263cdf4fb9..06b9d993f281 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxButton.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxButton.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -61,7 +60,7 @@ protected override bool OnClick(ClickEvent e)
         protected override void UpdateHoverState()
         {
             base.UpdateHoverState();
-            icon.FadeColour(!IsHeld && IsHovered ? Color4.White : Color4.Black, TRANSFORM_DURATION, Easing.OutQuint);
+            icon.FadeColour(!IsHeld && IsHovered ? Colour4.White : Colour4.Black, TRANSFORM_DURATION, Easing.OutQuint);
         }
 
         protected override void OnHoverLost(HoverLostEvent e)
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
index 9b679a13440d..620e1c2d5f8a 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
@@ -10,9 +10,8 @@
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -54,7 +53,7 @@ private void load()
         protected override void UpdateHoverState()
         {
             base.UpdateHoverState();
-            icon.FadeColour(!IsHeld && IsHovered ? Color4.White : Color4.Black, TRANSFORM_DURATION, Easing.OutQuint);
+            icon.FadeColour(!IsHeld && IsHovered ? Colour4.White : Colour4.Black, TRANSFORM_DURATION, Easing.OutQuint);
         }
 
         private float rawCumulativeRotation;
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
index 3b7e29cf3dc6..328543bce101 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
@@ -6,8 +6,8 @@
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
 using osu.Framework.Utils;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionHandler.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionHandler.cs
index 912bec61e517..9121c2e9ad9c 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionHandler.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionHandler.cs
@@ -20,8 +20,6 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
-using osuTK;
-using osuTK.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
@@ -124,7 +122,7 @@ protected virtual void OnOperationEnded()
         /// </remarks>
         /// <seealso cref="ComposeBlueprintContainer.ReceivePositionalInputAt"/>
         /// <seealso cref="TimelineBlueprintContainer.ReceivePositionalInputAt"/>
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => true;
 
         /// <summary>
         /// Handles the selected items being moved.
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionRotationHandler.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionRotationHandler.cs
index 6cd2428b8aec..044883ad0bb6 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionRotationHandler.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionRotationHandler.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionScaleHandler.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionScaleHandler.cs
index 177de9df3307..4acd3bed9433 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionScaleHandler.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionScaleHandler.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/CentreMarker.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/CentreMarker.cs
index 48390a320a81..391e6cec1de3 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/CentreMarker.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/CentreMarker.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/DifficultyPointPiece.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/DifficultyPointPiece.cs
index 44235e5d0b27..a40b51ac2d41 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/DifficultyPointPiece.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/DifficultyPointPiece.cs
@@ -19,8 +19,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit.Timing;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -38,7 +37,7 @@ public DifficultyPointPiece(HitObject hitObject)
             speedMultiplier = (hitObject as IHasSliderVelocity)?.SliderVelocityMultiplierBindable.GetBoundCopy();
         }
 
-        protected override Color4 GetRepresentingColour(OsuColour colours) => colours.Lime1;
+        protected override Colour4 GetRepresentingColour(OsuColour colours) => colours.Lime1;
 
         protected override void LoadComplete()
         {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/HitObjectPointPiece.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/HitObjectPointPiece.cs
index 76323ac08c1a..648b8ce23e8d 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/HitObjectPointPiece.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/HitObjectPointPiece.cs
@@ -9,7 +9,6 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -24,7 +23,7 @@ private void load(OsuColour colours)
         {
             AutoSizeAxes = Axes.Both;
 
-            Color4 colour = GetRepresentingColour(colours);
+            Colour4 colour = GetRepresentingColour(colours);
 
             InternalChildren = new Drawable[]
             {
@@ -56,7 +55,7 @@ private void load(OsuColour colours)
             };
         }
 
-        protected virtual Color4 GetRepresentingColour(OsuColour colours)
+        protected virtual Colour4 GetRepresentingColour(OsuColour colours)
         {
             return colours.Yellow;
         }
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/SamplePointPiece.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/SamplePointPiece.cs
index 9a625973a317..605f3ac24844 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/SamplePointPiece.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/SamplePointPiece.cs
@@ -25,9 +25,8 @@
 using osu.Game.Screens.Edit.Components.TernaryButtons;
 using osu.Game.Screens.Edit.Timing;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -52,7 +51,7 @@ public SamplePointPiece(HitObject hitObject)
 
         public bool AlternativeColor { get; init; }
 
-        protected override Color4 GetRepresentingColour(OsuColour colours) => AlternativeColor ? colours.Pink2 : colours.Pink1;
+        protected override Colour4 GetRepresentingColour(OsuColour colours) => AlternativeColor ? colours.Pink2 : colours.Pink1;
 
         protected virtual double GetTime() => HitObject is IHasRepeats r ? HitObject.StartTime + r.Duration / r.SpanCount() / 2 : HitObject.StartTime;
 
@@ -431,8 +430,8 @@ private void updateSampleSetState()
                 }
 
                 sampleSetDropdown?.Current.Value = activeSets.Count == 1
-                        ? sampleSetDropdown.Items.Single(i => i.SampleSetIndex == activeSets.Single())
-                        : new EditorBeatmapSkin.SampleSet(-1, "(multiple)");
+                    ? sampleSetDropdown.Items.Single(i => i.SampleSetIndex == activeSets.Single())
+                    : new EditorBeatmapSkin.SampleSet(-1, "(multiple)");
             }
 
             private void playDemoSample() => Scheduler.AddOnce(() =>
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
index 4fb5e9e3299d..8c70aeec449a 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Audio;
@@ -16,8 +15,8 @@
 using osu.Game.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Edit;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineArea.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineArea.cs
index 1db067c846ed..6445acc7afab 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineArea.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineArea.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Edit;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBlueprintContainer.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBlueprintContainer.cs
index c149a8f73a73..ccc4e7c38a12 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBlueprintContainer.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBlueprintContainer.cs
@@ -8,7 +8,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -23,8 +22,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Parts;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -63,7 +61,7 @@ private void load()
         {
             AddInternal(new SelectableAreaBackground
             {
-                Colour = Color4.Black,
+                Colour = Colour4.Black,
                 Depth = float.MaxValue,
                 Blending = BlendingParameters.Additive,
             });
@@ -358,11 +356,11 @@ private void load()
                         RelativeSizeAxes = Axes.Y,
                         Width = 200,
                         Origin = Anchor.TopRight,
-                        Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0), Color4.White),
+                        Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0), Colour4.White),
                     },
                     new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         RelativeSizeAxes = Axes.Both,
                     }
                 });
@@ -376,7 +374,7 @@ protected override bool OnHover(HoverEvent e)
 
             protected override void OnHoverLost(HoverLostEvent e)
             {
-                this.FadeColour(Color4.Black, 600, Easing.OutQuint);
+                this.FadeColour(Colour4.Black, 600, Easing.OutQuint);
                 base.OnHoverLost(e);
             }
         }
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBreak.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBreak.cs
index 721af9767427..351fe79e55f1 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBreak.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBreak.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -19,7 +18,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Objects;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs
index 9f028009936d..5129fdb2c209 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs
@@ -6,7 +6,6 @@
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -24,8 +23,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -45,7 +43,7 @@ public partial class TimelineHitObjectBlueprint : SelectionBlueprint<HitObject>
         private Bindable<int>? comboIndexBindable;
         private Bindable<int>? comboIndexWithOffsetsBindable;
 
-        private Bindable<Color4> displayColourBindable = null!;
+        private Bindable<Colour4> displayColourBindable = null!;
 
         private readonly ExtendableCircle circle;
         private readonly Border border;
@@ -180,7 +178,7 @@ protected override void OnDeselected()
 
         private void updateColour()
         {
-            Color4 colour;
+            Colour4 colour;
 
             switch (Item)
             {
@@ -547,7 +545,7 @@ public ExtendableCircle()
                     {
                         Type = EdgeEffectType.Shadow,
                         Radius = 5,
-                        Colour = Color4.Black.Opacity(0.05f)
+                        Colour = Colour4.Black.Opacity(0.05f)
                     }
                 };
             }
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineSelectionHandler.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineSelectionHandler.cs
index b792dbbe4c88..44f6617991fc 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineSelectionHandler.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineSelectionHandler.cs
@@ -12,7 +12,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTickDisplay.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTickDisplay.cs
index faefdee09680..8105dc45ec18 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTickDisplay.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTickDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Parts;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Visualisations;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTimingChangeDisplay.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTimingChangeDisplay.cs
index 419f7e111f7a..26ea37189616 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTimingChangeDisplay.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineTimingChangeDisplay.cs
@@ -12,7 +12,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Parts;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
@@ -131,7 +130,7 @@ private void load(OsuColour colours)
                         CornerRadius = TimelineTickDisplay.TICK_WIDTH / 2,
                         Child = new Box
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.Both,
                         },
                     },
diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/ZoomableScrollContainer.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/ZoomableScrollContainer.cs
index b483f23d1d58..69647936a79b 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/ZoomableScrollContainer.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/ZoomableScrollContainer.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Timing;
 using osu.Framework.Utils;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 {
diff --git a/osu.Game/Screens/Edit/Compose/Components/TriangularPositionSnapGrid.cs b/osu.Game/Screens/Edit/Compose/Components/TriangularPositionSnapGrid.cs
index 91aea1de8d20..5b8072c761bc 100644
--- a/osu.Game/Screens/Edit/Compose/Components/TriangularPositionSnapGrid.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/TriangularPositionSnapGrid.cs
@@ -4,7 +4,7 @@
 using System;
 using osu.Framework.Bindables;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Compose.Components
 {
diff --git a/osu.Game/Screens/Edit/Editor.cs b/osu.Game/Screens/Edit/Editor.cs
index d03cf78303f5..072528cedb32 100644
--- a/osu.Game/Screens/Edit/Editor.cs
+++ b/osu.Game/Screens/Edit/Editor.cs
@@ -58,7 +58,6 @@
 using osu.Game.Screens.Edit.Verify;
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Users;
-using osuTK.Input;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Edit
diff --git a/osu.Game/Screens/Edit/EditorBeatmapSkin.cs b/osu.Game/Screens/Edit/EditorBeatmapSkin.cs
index d7d4288b51e3..ca186a7f861f 100644
--- a/osu.Game/Screens/Edit/EditorBeatmapSkin.cs
+++ b/osu.Game/Screens/Edit/EditorBeatmapSkin.cs
@@ -11,7 +11,6 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Audio;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit
 {
@@ -48,7 +47,7 @@ public EditorBeatmapSkin(EditorBeatmap editorBeatmap, LegacyBeatmapSkin skin)
             Skin = skin;
             ComboColours = new BindableList<Colour4>();
 
-            if (Skin.Configuration.ComboColours is IReadOnlyList<Color4> comboColours)
+            if (Skin.Configuration.ComboColours is IReadOnlyList<Colour4> comboColours)
             {
                 // due to the foibles of how `IHasComboInformation` / `ComboIndexWithOffsets` work,
                 // the actual effective first combo colour that will be used on the beatmap is the one with index 1, not 0.
diff --git a/osu.Game/Screens/Edit/EditorRoundedScreenSettings.cs b/osu.Game/Screens/Edit/EditorRoundedScreenSettings.cs
index 510c27e8c636..309fbdab6d0c 100644
--- a/osu.Game/Screens/Edit/EditorRoundedScreenSettings.cs
+++ b/osu.Game/Screens/Edit/EditorRoundedScreenSettings.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit
 {
diff --git a/osu.Game/Screens/Edit/EditorRoundedScreenSettingsSection.cs b/osu.Game/Screens/Edit/EditorRoundedScreenSettingsSection.cs
index 751b6f61d1e4..3746599bf569 100644
--- a/osu.Game/Screens/Edit/EditorRoundedScreenSettingsSection.cs
+++ b/osu.Game/Screens/Edit/EditorRoundedScreenSettingsSection.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit
 {
diff --git a/osu.Game/Screens/Edit/ExternalEditScreen.cs b/osu.Game/Screens/Edit/ExternalEditScreen.cs
index 21eff365583f..04654088bf99 100644
--- a/osu.Game/Screens/Edit/ExternalEditScreen.cs
+++ b/osu.Game/Screens/Edit/ExternalEditScreen.cs
@@ -25,7 +25,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Match.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit
 {
diff --git a/osu.Game/Screens/Edit/Setup/DesignSection.cs b/osu.Game/Screens/Edit/Setup/DesignSection.cs
index e463492e5ea0..c7ef778d9d12 100644
--- a/osu.Game/Screens/Edit/Setup/DesignSection.cs
+++ b/osu.Game/Screens/Edit/Setup/DesignSection.cs
@@ -11,7 +11,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Setup
 {
diff --git a/osu.Game/Screens/Edit/Setup/FormBeatmapFileSelector.cs b/osu.Game/Screens/Edit/Setup/FormBeatmapFileSelector.cs
index 016711635963..c9f0f8d081b0 100644
--- a/osu.Game/Screens/Edit/Setup/FormBeatmapFileSelector.cs
+++ b/osu.Game/Screens/Edit/Setup/FormBeatmapFileSelector.cs
@@ -5,7 +5,6 @@
 using System.IO;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -14,7 +13,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Edit.Setup
 {
diff --git a/osu.Game/Screens/Edit/Setup/LabelledFileChooser.cs b/osu.Game/Screens/Edit/Setup/LabelledFileChooser.cs
index a113ca5407bc..375c6332ded0 100644
--- a/osu.Game/Screens/Edit/Setup/LabelledFileChooser.cs
+++ b/osu.Game/Screens/Edit/Setup/LabelledFileChooser.cs
@@ -19,7 +19,7 @@
 using osu.Game.Database;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Setup
 {
diff --git a/osu.Game/Screens/Edit/Setup/SetupScreen.cs b/osu.Game/Screens/Edit/Setup/SetupScreen.cs
index 97e12ae096ac..da3532b85d5f 100644
--- a/osu.Game/Screens/Edit/Setup/SetupScreen.cs
+++ b/osu.Game/Screens/Edit/Setup/SetupScreen.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Screens;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Setup
 {
diff --git a/osu.Game/Screens/Edit/Setup/SetupScreenHeader.cs b/osu.Game/Screens/Edit/Setup/SetupScreenHeader.cs
index b0fefb741fa0..06de77dedd38 100644
--- a/osu.Game/Screens/Edit/Setup/SetupScreenHeader.cs
+++ b/osu.Game/Screens/Edit/Setup/SetupScreenHeader.cs
@@ -11,7 +11,6 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Edit.Setup
 {
@@ -88,7 +87,7 @@ internal partial class SetupScreenTabControl : OverlayTabControl<SetupSection>
         {
             private readonly Box background;
 
-            public Color4 BackgroundColour
+            public Colour4 BackgroundColour
             {
                 get => background.Colour;
                 set => background.Colour = value;
diff --git a/osu.Game/Screens/Edit/Setup/SetupSection.cs b/osu.Game/Screens/Edit/Setup/SetupSection.cs
index bd1eb51b48f7..739685065d29 100644
--- a/osu.Game/Screens/Edit/Setup/SetupSection.cs
+++ b/osu.Game/Screens/Edit/Setup/SetupSection.cs
@@ -8,7 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Setup
 {
diff --git a/osu.Game/Screens/Edit/Submission/BeatmapSubmissionScreen.cs b/osu.Game/Screens/Edit/Submission/BeatmapSubmissionScreen.cs
index 78066edc7e07..e164b5480d25 100644
--- a/osu.Game/Screens/Edit/Submission/BeatmapSubmissionScreen.cs
+++ b/osu.Game/Screens/Edit/Submission/BeatmapSubmissionScreen.cs
@@ -31,7 +31,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Submission
 {
diff --git a/osu.Game/Screens/Edit/Submission/ScreenFrequentlyAskedQuestions.cs b/osu.Game/Screens/Edit/Submission/ScreenFrequentlyAskedQuestions.cs
index 861c5051f4a0..7ba7eda4b93d 100644
--- a/osu.Game/Screens/Edit/Submission/ScreenFrequentlyAskedQuestions.cs
+++ b/osu.Game/Screens/Edit/Submission/ScreenFrequentlyAskedQuestions.cs
@@ -9,7 +9,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Submission
 {
diff --git a/osu.Game/Screens/Edit/Submission/ScreenSubmissionSettings.cs b/osu.Game/Screens/Edit/Submission/ScreenSubmissionSettings.cs
index 26b99d4e4dca..b856dd632af9 100644
--- a/osu.Game/Screens/Edit/Submission/ScreenSubmissionSettings.cs
+++ b/osu.Game/Screens/Edit/Submission/ScreenSubmissionSettings.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Submission
 {
diff --git a/osu.Game/Screens/Edit/Submission/SubmissionStageProgress.cs b/osu.Game/Screens/Edit/Submission/SubmissionStageProgress.cs
index 59d2f71941a6..0e9d1a71ee53 100644
--- a/osu.Game/Screens/Edit/Submission/SubmissionStageProgress.cs
+++ b/osu.Game/Screens/Edit/Submission/SubmissionStageProgress.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Submission
 {
diff --git a/osu.Game/Screens/Edit/Timing/ControlPointList.cs b/osu.Game/Screens/Edit/Timing/ControlPointList.cs
index 31256307588d..6522f0075318 100644
--- a/osu.Game/Screens/Edit/Timing/ControlPointList.cs
+++ b/osu.Game/Screens/Edit/Timing/ControlPointList.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/ControlPointTable.cs b/osu.Game/Screens/Edit/Timing/ControlPointTable.cs
index a37674b104da..ac3646016b7b 100644
--- a/osu.Game/Screens/Edit/Timing/ControlPointTable.cs
+++ b/osu.Game/Screens/Edit/Timing/ControlPointTable.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -21,8 +20,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Screens.Edit.Timing.RowAttributes;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -229,7 +227,7 @@ private void load()
                                 Blending = BlendingParameters.Additive,
                                 X = 5,
                                 Width = 150,
-                                Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.1f), Color4.White.Opacity(0))
+                                Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.1f), Colour4.White.Opacity(0))
                             },
                         }
                     },
diff --git a/osu.Game/Screens/Edit/Timing/GroupSection.cs b/osu.Game/Screens/Edit/Timing/GroupSection.cs
index 13e802a8e46d..c4907700d71a 100644
--- a/osu.Game/Screens/Edit/Timing/GroupSection.cs
+++ b/osu.Game/Screens/Edit/Timing/GroupSection.cs
@@ -10,7 +10,7 @@
 using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/IndeterminateSliderWithTextBoxInput.cs b/osu.Game/Screens/Edit/Timing/IndeterminateSliderWithTextBoxInput.cs
index cbc6c8003792..1d544c02275f 100644
--- a/osu.Game/Screens/Edit/Timing/IndeterminateSliderWithTextBoxInput.cs
+++ b/osu.Game/Screens/Edit/Timing/IndeterminateSliderWithTextBoxInput.cs
@@ -12,7 +12,6 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays.Settings;
 using osu.Game.Utils;
-using Vector2 = osuTK.Vector2;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/MetronomeDisplay.cs b/osu.Game/Screens/Edit/Timing/MetronomeDisplay.cs
index 50787726fb27..a5880e4c02ae 100644
--- a/osu.Game/Screens/Edit/Timing/MetronomeDisplay.cs
+++ b/osu.Game/Screens/Edit/Timing/MetronomeDisplay.cs
@@ -21,7 +21,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -83,7 +83,7 @@ private void load(AudioManager audio)
                     Masking = true,
                     Anchor = Anchor.BottomCentre,
                     Origin = Anchor.BottomCentre,
-                    Size = new Vector2(triangleSize.X, triangleSize.Y - taper),
+                    Size = triangleSize with { Y = triangleSize.Y - taper },
                     Children = new Drawable[]
                     {
                         new Triangle
@@ -171,7 +171,7 @@ private void load(AudioManager audio)
                     Masking = true,
                     Anchor = Anchor.BottomCentre,
                     Origin = Anchor.BottomCentre,
-                    Size = new Vector2(triangleSize.X, triangleSize.Y - taper),
+                    Size = triangleSize with { Y = triangleSize.Y - taper },
                     Children = new Drawable[]
                     {
                         new Circle
diff --git a/osu.Game/Screens/Edit/Timing/RowAttribute.cs b/osu.Game/Screens/Edit/Timing/RowAttribute.cs
index 71407701dbdf..9ccb5527ce1b 100644
--- a/osu.Game/Screens/Edit/Timing/RowAttribute.cs
+++ b/osu.Game/Screens/Edit/Timing/RowAttribute.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/RowAttributes/AttributeProgressBar.cs b/osu.Game/Screens/Edit/Timing/RowAttributes/AttributeProgressBar.cs
index 0a89f196fa19..b11b0337594b 100644
--- a/osu.Game/Screens/Edit/Timing/RowAttributes/AttributeProgressBar.cs
+++ b/osu.Game/Screens/Edit/Timing/RowAttributes/AttributeProgressBar.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing.RowAttributes
 {
diff --git a/osu.Game/Screens/Edit/Timing/Section.cs b/osu.Game/Screens/Edit/Timing/Section.cs
index ba3874dcee91..a0e7bad9d5b5 100644
--- a/osu.Game/Screens/Edit/Timing/Section.cs
+++ b/osu.Game/Screens/Edit/Timing/Section.cs
@@ -10,7 +10,7 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/TapButton.cs b/osu.Game/Screens/Edit/Timing/TapButton.cs
index 20e4aae7b548..eccb05fe8d72 100644
--- a/osu.Game/Screens/Edit/Timing/TapButton.cs
+++ b/osu.Game/Screens/Edit/Timing/TapButton.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -22,9 +21,8 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -107,7 +105,7 @@ private void load()
                         {
                             new Box
                             {
-                                Colour = Color4.Black,
+                                Colour = Colour4.Black,
                                 RelativeSizeAxes = Axes.Both,
                                 Alpha = 0,
                                 AlwaysPresent = true,
@@ -244,7 +242,7 @@ protected override bool OnMouseDown(MouseDownEvent e)
 
             innerCircleHighlight
                 .FadeIn(50, Easing.OutQuint)
-                .FlashColour(Color4.White, 1000, Easing.OutQuint);
+                .FlashColour(Colour4.White, 1000, Easing.OutQuint);
 
             lights[currentLight % light_count].Hide();
             lights[(currentLight + light_count / 2) % light_count].Hide();
@@ -403,7 +401,7 @@ public override void Show()
             {
                 fillContent
                     .FadeIn(50, Easing.OutQuint)
-                    .FlashColour(Color4.White, 1000, Easing.OutQuint);
+                    .FlashColour(Colour4.White, 1000, Easing.OutQuint);
             }
 
             public override void Hide()
diff --git a/osu.Game/Screens/Edit/Timing/TapTimingControl.cs b/osu.Game/Screens/Edit/Timing/TapTimingControl.cs
index f105c0072631..a691b40d6c89 100644
--- a/osu.Game/Screens/Edit/Timing/TapTimingControl.cs
+++ b/osu.Game/Screens/Edit/Timing/TapTimingControl.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
diff --git a/osu.Game/Screens/Edit/Timing/WaveformComparisonDisplay.cs b/osu.Game/Screens/Edit/Timing/WaveformComparisonDisplay.cs
index a344483894f5..43ab9fdee4a6 100644
--- a/osu.Game/Screens/Edit/Timing/WaveformComparisonDisplay.cs
+++ b/osu.Game/Screens/Edit/Timing/WaveformComparisonDisplay.cs
@@ -17,8 +17,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -82,7 +81,7 @@ protected override void LoadComplete()
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-                Colour = Color4.White,
+                Colour = Colour4.White,
                 RelativeSizeAxes = Axes.Y,
                 Width = 3,
             });
diff --git a/osu.Game/Screens/Edit/Verify/IssueList.cs b/osu.Game/Screens/Edit/Verify/IssueList.cs
index 8222e5633e05..859cb6f34682 100644
--- a/osu.Game/Screens/Edit/Verify/IssueList.cs
+++ b/osu.Game/Screens/Edit/Verify/IssueList.cs
@@ -15,7 +15,7 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Checks.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Edit.Verify
 {
diff --git a/osu.Game/Screens/Footer/ScreenBackButton.cs b/osu.Game/Screens/Footer/ScreenBackButton.cs
index 37d4260d1825..f84a749a338b 100644
--- a/osu.Game/Screens/Footer/ScreenBackButton.cs
+++ b/osu.Game/Screens/Footer/ScreenBackButton.cs
@@ -10,8 +10,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Footer
 {
@@ -65,7 +64,7 @@ private void load()
 
             DarkerColour = Color4Extensions.FromHex("#DE31AE");
             LighterColour = Color4Extensions.FromHex("#FF86DD");
-            TextColour = Color4.White;
+            TextColour = Colour4.White;
         }
     }
 }
diff --git a/osu.Game/Screens/Footer/ScreenFooter.cs b/osu.Game/Screens/Footer/ScreenFooter.cs
index 0cc86901c836..df0e57b7c248 100644
--- a/osu.Game/Screens/Footer/ScreenFooter.cs
+++ b/osu.Game/Screens/Footer/ScreenFooter.cs
@@ -18,7 +18,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Screens.Menu;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Footer
 {
diff --git a/osu.Game/Screens/Footer/ScreenFooterButton.cs b/osu.Game/Screens/Footer/ScreenFooterButton.cs
index 01ad4c20563e..670cbd94daba 100644
--- a/osu.Game/Screens/Footer/ScreenFooterButton.cs
+++ b/osu.Game/Screens/Footer/ScreenFooterButton.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -19,8 +18,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input.Bindings;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Footer
 {
@@ -234,9 +232,9 @@ public virtual void OnReleased(KeyBindingReleaseEvent<GlobalAction> e) { }
 
         public void UpdateDisplay()
         {
-            Color4 backgroundColour = OverlayState.Value == Visibility.Visible ? buttonAccentColour : colourProvider.Background3;
-            Color4 textColour = OverlayState.Value == Visibility.Visible ? colourProvider.Background6 : colourProvider.Content1;
-            Color4 accentColour = OverlayState.Value == Visibility.Visible ? colourProvider.Background6 : buttonAccentColour;
+            Colour4 backgroundColour = OverlayState.Value == Visibility.Visible ? buttonAccentColour : colourProvider.Background3;
+            Colour4 textColour = OverlayState.Value == Visibility.Visible ? colourProvider.Background6 : colourProvider.Content1;
+            Colour4 accentColour = OverlayState.Value == Visibility.Visible ? colourProvider.Background6 : buttonAccentColour;
 
             if (!Enabled.Value)
                 backgroundColour = backgroundColour.Darken(1f);
diff --git a/osu.Game/Screens/Import/FileImportScreen.cs b/osu.Game/Screens/Import/FileImportScreen.cs
index bd35b8131eff..22564c1de612 100644
--- a/osu.Game/Screens/Import/FileImportScreen.cs
+++ b/osu.Game/Screens/Import/FileImportScreen.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Import
 {
diff --git a/osu.Game/Screens/Menu/ButtonArea.cs b/osu.Game/Screens/Menu/ButtonArea.cs
index 5d501eeb27aa..699d5752e253 100644
--- a/osu.Game/Screens/Menu/ButtonArea.cs
+++ b/osu.Game/Screens/Menu/ButtonArea.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
diff --git a/osu.Game/Screens/Menu/ButtonSystem.cs b/osu.Game/Screens/Menu/ButtonSystem.cs
index 3611e7d34eb8..b2b51d88368f 100644
--- a/osu.Game/Screens/Menu/ButtonSystem.cs
+++ b/osu.Game/Screens/Menu/ButtonSystem.cs
@@ -27,9 +27,8 @@
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -109,11 +108,11 @@ public ButtonSystem()
 
             buttonArea.AddRange(new Drawable[]
             {
-                new MainMenuButton(ButtonSystemStrings.Settings, string.Empty, OsuIcon.Settings, new Color4(85, 85, 85, 255), (_, _) => OnSettings?.Invoke(), Key.O, Key.S)
+                new MainMenuButton(ButtonSystemStrings.Settings, string.Empty, OsuIcon.Settings, new Colour4(85, 85, 85, 255), (_, _) => OnSettings?.Invoke(), Key.O, Key.S)
                 {
                     Padding = new MarginPadding { Right = WEDGE_WIDTH },
                 },
-                backButton = new MainMenuButton(ButtonSystemStrings.Back, @"back-to-top", OsuIcon.PrevCircle, new Color4(51, 58, 94, 255), (_, _) =>
+                backButton = new MainMenuButton(ButtonSystemStrings.Back, @"back-to-top", OsuIcon.PrevCircle, new Colour4(51, 58, 94, 255), (_, _) =>
                 {
                     switch (State)
                     {
@@ -149,43 +148,43 @@ public ButtonSystem()
         [BackgroundDependencyLoader]
         private void load(AudioManager audio, IdleTracker? idleTracker, GameHost host)
         {
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Color4(102, 68, 204, 255), (_, _) => OnSolo?.Invoke(), Key.P)
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Solo, @"button-default-select", OsuIcon.Player, new Colour4(102, 68, 204, 255), (_, _) => OnSolo?.Invoke(), Key.P)
             {
                 Padding = new MarginPadding { Left = WEDGE_WIDTH },
             });
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Multi, @"button-default-select", OsuIcon.Online, new Color4(94, 63, 186, 255), (_, _) => State = ButtonSystemState.Multi, Key.M));
-            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Playlists, @"button-default-select", OsuIcon.Tournament, new Color4(94, 63, 186, 255), onPlaylists, Key.L));
-            buttonsPlay.Add(new DailyChallengeButton(@"button-daily-select", new Color4(94, 63, 186, 255), onDailyChallenge, Key.D));
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Multi, @"button-default-select", OsuIcon.Online, new Colour4(94, 63, 186, 255), (_, _) => State = ButtonSystemState.Multi, Key.M));
+            buttonsPlay.Add(new MainMenuButton(ButtonSystemStrings.Playlists, @"button-default-select", OsuIcon.Tournament, new Colour4(94, 63, 186, 255), onPlaylists, Key.L));
+            buttonsPlay.Add(new DailyChallengeButton(@"button-daily-select", new Colour4(94, 63, 186, 255), onDailyChallenge, Key.D));
             buttonsPlay.ForEach(b => b.VisibleState = ButtonSystemState.Play);
 
-            buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.Lounge, @"button-default-select", FontAwesome.Solid.Couch, new Color4(94, 63, 186, 255), onMultiplayer, Key.L, Key.M)
+            buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.Lounge, @"button-default-select", FontAwesome.Solid.Couch, new Colour4(94, 63, 186, 255), onMultiplayer, Key.L, Key.M)
             {
                 Padding = new MarginPadding { Left = WEDGE_WIDTH }
             });
-            buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.RankedPlay, @"button-daily-select", FontAwesome.Solid.Crown, new Color4(94, 63, 186, 255), onRankedPlay, Key.R));
+            buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.RankedPlay, @"button-daily-select", FontAwesome.Solid.Crown, new Colour4(94, 63, 186, 255), onRankedPlay, Key.R));
             // disabled for now to give ranked play space.
-            // buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.QuickPlay, @"button-daily-select", FontAwesome.Solid.Bolt, new Color4(94, 63, 186, 255), onQuickPlay, Key.Q));
+            // buttonsMulti.Add(new MainMenuButton(ButtonSystemStrings.QuickPlay, @"button-daily-select", FontAwesome.Solid.Bolt, new Colour4(94, 63, 186, 255), onQuickPlay, Key.Q));
             buttonsMulti.ForEach(b => b.VisibleState = ButtonSystemState.Multi);
 
-            buttonsEdit.Add(new MainMenuButton(EditorStrings.BeatmapEditor.ToLower(), @"button-default-select", OsuIcon.Beatmap, new Color4(238, 170, 0, 255), (_, _) => OnEditBeatmap?.Invoke(), Key.B,
+            buttonsEdit.Add(new MainMenuButton(EditorStrings.BeatmapEditor.ToLower(), @"button-default-select", OsuIcon.Beatmap, new Colour4(238, 170, 0, 255), (_, _) => OnEditBeatmap?.Invoke(), Key.B,
                 Key.E)
             {
                 Padding = new MarginPadding { Left = WEDGE_WIDTH },
             });
-            buttonsEdit.Add(new MainMenuButton(SkinEditorStrings.SkinEditor.ToLower(), @"button-default-select", OsuIcon.SkinB, new Color4(220, 160, 0, 255), (_, _) => OnEditSkin?.Invoke(), Key.S));
+            buttonsEdit.Add(new MainMenuButton(SkinEditorStrings.SkinEditor.ToLower(), @"button-default-select", OsuIcon.SkinB, new Colour4(220, 160, 0, 255), (_, _) => OnEditSkin?.Invoke(), Key.S));
             buttonsEdit.ForEach(b => b.VisibleState = ButtonSystemState.Edit);
 
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Play, @"button-play-select", OsuIcon.Logo, new Color4(102, 68, 204, 255), (_, _) => State = ButtonSystemState.Play, Key.P, Key.M,
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Play, @"button-play-select", OsuIcon.Logo, new Colour4(102, 68, 204, 255), (_, _) => State = ButtonSystemState.Play, Key.P, Key.M,
                 Key.L)
             {
                 Padding = new MarginPadding { Left = WEDGE_WIDTH },
             });
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Edit, @"button-play-select", OsuIcon.EditCircle, new Color4(238, 170, 0, 255), (_, _) => State = ButtonSystemState.Edit, Key.E));
-            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Browse, @"button-default-select", OsuIcon.Beatmap, new Color4(165, 204, 0, 255), (_, _) => OnBeatmapListing?.Invoke(), Key.B,
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Edit, @"button-play-select", OsuIcon.EditCircle, new Colour4(238, 170, 0, 255), (_, _) => State = ButtonSystemState.Edit, Key.E));
+            buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Browse, @"button-default-select", OsuIcon.Beatmap, new Colour4(165, 204, 0, 255), (_, _) => OnBeatmapListing?.Invoke(), Key.B,
                 Key.D));
 
             if (host.CanExit)
-                buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Exit, string.Empty, OsuIcon.CrossCircle, new Color4(238, 51, 153, 255), (_, e) => OnExit?.Invoke(e), Key.Q));
+                buttonsTopLevel.Add(new MainMenuButton(ButtonSystemStrings.Exit, string.Empty, OsuIcon.CrossCircle, new Colour4(238, 51, 153, 255), (_, e) => OnExit?.Invoke(e), Key.Q));
 
             buttonArea.AddRange(buttonsMulti);
             buttonArea.AddRange(buttonsPlay);
@@ -297,7 +296,7 @@ protected override bool OnKeyDown(KeyDownEvent e)
             if (e.Repeat || e.ControlPressed || e.ShiftPressed || e.AltPressed || e.SuperPressed)
                 return false;
 
-            if (e.Key >= Key.F1 && e.Key <= Key.F35)
+            if (e.Key >= Key.F1 && e.Key <= Key.F24)
                 return false;
 
             if (e.Key >= Key.Mute && e.Key <= Key.TrackNext)
diff --git a/osu.Game/Screens/Menu/DailyChallengeButton.cs b/osu.Game/Screens/Menu/DailyChallengeButton.cs
index 480572f152ac..8f4450256648 100644
--- a/osu.Game/Screens/Menu/DailyChallengeButton.cs
+++ b/osu.Game/Screens/Menu/DailyChallengeButton.cs
@@ -24,9 +24,8 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.DailyChallenge;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -51,7 +50,7 @@ public partial class DailyChallengeButton : MainMenuButton
         [Resolved]
         private SessionStatics statics { get; set; } = null!;
 
-        public DailyChallengeButton(string sampleName, Color4 colour, Action<MainMenuButton, UIEvent>? clickAction = null, params Key[] triggerKeys)
+        public DailyChallengeButton(string sampleName, Colour4 colour, Action<MainMenuButton, UIEvent>? clickAction = null, params Key[] triggerKeys)
             : base(ButtonSystemStrings.DailyChallenge, sampleName, OsuIcon.DailyChallenge, colour, clickAction, triggerKeys)
         {
             BaseSize = new Vector2(ButtonSystem.BUTTON_WIDTH * 1.3f, ButtonArea.BUTTON_AREA_HEIGHT);
diff --git a/osu.Game/Screens/Menu/FlowContainerWithOrigin.cs b/osu.Game/Screens/Menu/FlowContainerWithOrigin.cs
index e36cc4a1526d..2ba7ab2126c1 100644
--- a/osu.Game/Screens/Menu/FlowContainerWithOrigin.cs
+++ b/osu.Game/Screens/Menu/FlowContainerWithOrigin.cs
@@ -5,7 +5,6 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
 
 namespace osu.Game.Screens.Menu
 {
@@ -24,7 +23,7 @@ public partial class FlowContainerWithOrigin : FillFlowContainer
 
         public override Anchor Origin => Anchor.Custom;
 
-        public override Vector2 OriginPosition
+        public override System.Numerics.Vector2 OriginPosition
         {
             get
             {
diff --git a/osu.Game/Screens/Menu/IntroScreen.cs b/osu.Game/Screens/Menu/IntroScreen.cs
index 7b23cc753817..f718d322e8e9 100644
--- a/osu.Game/Screens/Menu/IntroScreen.cs
+++ b/osu.Game/Screens/Menu/IntroScreen.cs
@@ -29,8 +29,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Screens.Backgrounds;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Screens.Menu
@@ -94,7 +93,7 @@ public abstract partial class IntroScreen : StartupScreen
 
         protected override BackgroundScreen CreateBackground() => new BackgroundScreenDefault
         {
-            Colour = Color4.Black
+            Colour = Colour4.Black
         };
 
         public override bool? AllowGlobalTrackControl => false;
@@ -239,7 +238,7 @@ public override void OnResuming(ScreenTransitionEvent e)
         {
             this.FadeIn(300);
 
-            ApplyToBackground(b => b.FadeColour(Color4.Black, 100));
+            ApplyToBackground(b => b.FadeColour(Colour4.Black, 100));
 
             double fadeOutTime = exit_delay;
 
@@ -287,7 +286,7 @@ public override void OnResuming(ScreenTransitionEvent e)
 
         protected void FadeInBackground(float duration = 0)
         {
-            ApplyToBackground(b => b.FadeColour(Color4.White, duration));
+            ApplyToBackground(b => b.FadeColour(Colour4.White, duration));
             backgroundFaded = true;
         }
 
@@ -322,7 +321,7 @@ protected override void LogoArriving(OsuLogo logo, bool resuming)
         {
             base.LogoArriving(logo, resuming);
 
-            logo.Colour = Color4.White;
+            logo.Colour = Colour4.White;
             logo.Triangles = false;
             logo.Ripple = false;
 
diff --git a/osu.Game/Screens/Menu/IntroSequence.cs b/osu.Game/Screens/Menu/IntroSequence.cs
index 89b1cf5f274d..2bf60cc13220 100644
--- a/osu.Game/Screens/Menu/IntroSequence.cs
+++ b/osu.Game/Screens/Menu/IntroSequence.cs
@@ -11,8 +11,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -68,7 +67,7 @@ private void load()
                             Anchor = Anchor.Centre,
                             Position = new Vector2(-line_offset, -line_offset),
                             Rotation = 45,
-                            Colour = Color4.White.Opacity(180),
+                            Colour = Colour4.White.Opacity(180),
                         },
                         lineTopRight = new Box
                         {
@@ -76,7 +75,7 @@ private void load()
                             Anchor = Anchor.Centre,
                             Position = new Vector2(line_offset, -line_offset),
                             Rotation = -45,
-                            Colour = Color4.White.Opacity(80),
+                            Colour = Colour4.White.Opacity(80),
                         },
                         lineBottomLeft = new Box
                         {
@@ -84,7 +83,7 @@ private void load()
                             Anchor = Anchor.Centre,
                             Position = new Vector2(-line_offset, line_offset),
                             Rotation = -45,
-                            Colour = Color4.White.Opacity(230),
+                            Colour = Colour4.White.Opacity(230),
                         },
                         lineBottomRight = new Box
                         {
@@ -92,13 +91,13 @@ private void load()
                             Anchor = Anchor.Centre,
                             Position = new Vector2(line_offset, line_offset),
                             Rotation = 45,
-                            Colour = Color4.White.Opacity(130),
+                            Colour = Colour4.White.Opacity(130),
                         },
                     }
                 },
                 bigRing = new Ring(Color4Extensions.FromHex(@"B6C5E9"), 0.85f),
-                mediumRing = new Ring(Color4.White.Opacity(130), 0.7f),
-                smallRing = new Ring(Color4.White, 0.6f),
+                mediumRing = new Ring(Colour4.White.Opacity(130), 0.7f),
+                smallRing = new Ring(Colour4.White, 0.6f),
                 welcomeText = new OsuSpriteText
                 {
                     Anchor = Anchor.Centre,
@@ -132,7 +131,7 @@ private void load()
                             Size = Vector2.Zero,
                             RelativeSizeAxes = Axes.Both,
                             Width = 0,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                         },
                     }
                 },
@@ -207,7 +206,7 @@ public void Start(double length)
                 const int line_end_offset = 120;
 
                 smallRing.Foreground.ResizeTo(1, line_duration, Easing.OutQuint);
-                smallRing.Delay(400).FadeColour(Color4.Black, 300);
+                smallRing.Delay(400).FadeColour(Colour4.Black, 300);
 
                 lineTopLeft.MoveTo(new Vector2(-line_end_offset, -line_end_offset), line_duration, Easing.OutQuint);
                 lineTopRight.MoveTo(new Vector2(line_end_offset, -line_end_offset), line_duration, Easing.OutQuint);
@@ -270,7 +269,7 @@ private partial class Ring : Container<Circle>
         {
             public readonly Circle Foreground;
 
-            public Ring(Color4 ringColour, float foregroundSize)
+            public Ring(Colour4 ringColour, float foregroundSize)
             {
                 Anchor = Anchor.Centre;
                 Origin = Anchor.Centre;
@@ -290,7 +289,7 @@ public Ring(Color4 ringColour, float foregroundSize)
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     }
                 };
             }
diff --git a/osu.Game/Screens/Menu/IntroTriangles.cs b/osu.Game/Screens/Menu/IntroTriangles.cs
index 9b8252a4b743..1329466788cd 100644
--- a/osu.Game/Screens/Menu/IntroTriangles.cs
+++ b/osu.Game/Screens/Menu/IntroTriangles.cs
@@ -19,8 +19,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -267,7 +266,7 @@ private partial class GameWideFlash : Box
 
                 public GameWideFlash()
                 {
-                    Colour = Color4.White;
+                    Colour = Colour4.White;
                     RelativeSizeAxes = Axes.Both;
                     Blending = BlendingParameters.Additive;
                 }
@@ -307,7 +306,7 @@ private void load(LargeTextureStore textures)
                         {
                             RelativeSizeAxes = Axes.Both,
                             Texture = textures.Get(@"Intro/Triangles/logo-highlight"),
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                         },
                         background = new LogoAnimation
                         {
@@ -401,7 +400,7 @@ public OutlineTriangle(bool outlineOnly, float size)
                             {
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
-                                Colour = Color4.Black,
+                                Colour = Colour4.Black,
                                 Size = new Vector2(size - 5),
                                 Blending = BlendingParameters.None,
                             });
diff --git a/osu.Game/Screens/Menu/IntroWelcome.cs b/osu.Game/Screens/Menu/IntroWelcome.cs
index 2a6ebecb9272..52e014cec01b 100644
--- a/osu.Game/Screens/Menu/IntroWelcome.cs
+++ b/osu.Game/Screens/Menu/IntroWelcome.cs
@@ -16,8 +16,7 @@
 using osu.Game.Audio;
 using osu.Game.Online.API;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -130,7 +129,7 @@ private void load(TextureStore textures, IAPIProvider api)
                                 RelativeSizeAxes = Axes.Both,
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
-                                Colour = Color4.DarkBlue,
+                                Colour = Colour4.DarkBlue,
                                 Size = OsuLogo.SCALE_ADJUST,
                             },
                             new Circle
@@ -138,7 +137,7 @@ private void load(TextureStore textures, IAPIProvider api)
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
                                 Size = new Vector2(480),
-                                Colour = Color4.Black
+                                Colour = Colour4.Black
                             },
                         }
                     },
diff --git a/osu.Game/Screens/Menu/LogoVisualisation.cs b/osu.Game/Screens/Menu/LogoVisualisation.cs
index 53d153ab31de..0f8c081125c4 100644
--- a/osu.Game/Screens/Menu/LogoVisualisation.cs
+++ b/osu.Game/Screens/Menu/LogoVisualisation.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Primitives;
@@ -15,8 +14,7 @@
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Beatmaps;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -132,6 +130,7 @@ protected override void Update()
             base.Update();
 
             float decayFactor = (float)Time.Elapsed * decay_per_millisecond;
+            bool anyVisible = false;
 
             for (int i = 0; i < bars_per_visualiser; i++)
             {
@@ -139,9 +138,13 @@ protected override void Update()
                 frequencyAmplitudes[i] -= decayFactor * (frequencyAmplitudes[i] + 0.03f);
                 if (frequencyAmplitudes[i] < 0)
                     frequencyAmplitudes[i] = 0;
+
+                if (frequencyAmplitudes[i] > amplitude_dead_zone)
+                    anyVisible = true;
             }
 
-            Invalidate(Invalidation.DrawNode);
+            if (anyVisible)
+                Invalidate(Invalidation.DrawNode);
         }
 
         protected override DrawNode CreateDrawNode() => new VisualisationDrawNode(this);
@@ -169,7 +172,7 @@ private class VisualisationDrawNode : DrawNode
             // Assuming the logo is a circle, we don't need a second dimension.
             private float size;
 
-            private static readonly Color4 transparent_white = Color4.White.Opacity(0.2f);
+            private static readonly Colour4 transparent_white = Colour4.White.Opacity(0.2f);
 
             private readonly float[] audioData = new float[256];
 
@@ -199,7 +202,8 @@ protected override void Draw(IRenderer renderer)
 
                 shader.Bind();
 
-                Vector2 inflation = DrawInfo.MatrixInverse.ExtractScale().Xy;
+                var inflationM = DrawInfo.MatrixInverse;
+                Vector2 inflation = new Vector2(MathF.Sqrt(inflationM.M11 * inflationM.M11 + inflationM.M21 * inflationM.M21), MathF.Sqrt(inflationM.M12 * inflationM.M12 + inflationM.M22 * inflationM.M22));
 
                 ColourInfo colourInfo = DrawColourInfo.Colour;
                 colourInfo.ApplyChild(transparent_white);
@@ -237,7 +241,7 @@ protected override void Draw(IRenderer renderer)
                             null,
                             vertexBatch.AddAction,
                             // barSize by itself will make it smooth more in the X axis than in the Y axis, this reverts that.
-                            Vector2.Divide(inflation, barSize.Yx));
+                            Vector2.Divide(inflation, new Vector2(barSize.Y, barSize.X)));
                     }
                 }
 
diff --git a/osu.Game/Screens/Menu/MainMenu.cs b/osu.Game/Screens/Menu/MainMenu.cs
index 72d929cfc515..dc210636000b 100644
--- a/osu.Game/Screens/Menu/MainMenu.cs
+++ b/osu.Game/Screens/Menu/MainMenu.cs
@@ -42,8 +42,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Screens.Select;
 using osu.Game.Seasonal;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -284,7 +283,7 @@ protected override void LogoArriving(OsuLogo logo, bool resuming)
 
             Buttons.SetOsuLogo(logo);
 
-            logo.FadeColour(Color4.White, 100, Easing.OutQuint);
+            logo.FadeColour(Colour4.White, 100, Easing.OutQuint);
             logo.FadeIn(100, Easing.OutQuint);
 
             logoProxy = logo.ProxyToContainer(logoTarget);
diff --git a/osu.Game/Screens/Menu/MainMenuButton.cs b/osu.Game/Screens/Menu/MainMenuButton.cs
index 642cac171119..8fc2c6040658 100644
--- a/osu.Game/Screens/Menu/MainMenuButton.cs
+++ b/osu.Game/Screens/Menu/MainMenuButton.cs
@@ -2,13 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Linq;
 using osu.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Audio.Track;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -19,9 +17,8 @@
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -84,7 +81,7 @@ public ButtonSystemState VisibleState
 
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => background.ReceivePositionalInputAt(screenSpacePos);
 
-        public MainMenuButton(LocalisableString text, string sampleName, IconUsage symbol, Color4 colour, Action<MainMenuButton, UIEvent>? clickAction = null, params Key[] triggerKeys)
+        public MainMenuButton(LocalisableString text, string sampleName, IconUsage symbol, Colour4 colour, Action<MainMenuButton, UIEvent>? clickAction = null, params Key[] triggerKeys)
         {
             this.sampleName = sampleName;
             this.clickAction = clickAction;
@@ -104,7 +101,7 @@ public MainMenuButton(LocalisableString text, string sampleName, IconUsage symbo
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.2f),
+                        Colour = Colour4.Black.Opacity(0.2f),
                         Roundness = 5,
                         Radius = 8,
                     },
@@ -123,7 +120,7 @@ public MainMenuButton(LocalisableString text, string sampleName, IconUsage symbo
                             EdgeSmoothness = new Vector2(1.5f, 0),
                             RelativeSizeAxes = Axes.Both,
                             Blending = BlendingParameters.Additive,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Depth = float.MinValue,
                             Alpha = 0,
                         },
diff --git a/osu.Game/Screens/Menu/MenuLogoVisualisation.cs b/osu.Game/Screens/Menu/MenuLogoVisualisation.cs
index f152c0c93c41..70cb8a137180 100644
--- a/osu.Game/Screens/Menu/MenuLogoVisualisation.cs
+++ b/osu.Game/Screens/Menu/MenuLogoVisualisation.cs
@@ -6,7 +6,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -28,9 +28,9 @@ private void load(IAPIProvider api, SkinManager skinManager)
         protected virtual void UpdateColour()
         {
             if (user.Value?.IsSupporter ?? false)
-                Colour = skin.Value.GetConfig<GlobalSkinColours, Color4>(GlobalSkinColours.MenuGlow)?.Value ?? Color4.White;
+                Colour = skin.Value.GetConfig<GlobalSkinColours, Colour4>(GlobalSkinColours.MenuGlow)?.Value ?? Colour4.White;
             else
-                Colour = Color4.White;
+                Colour = Colour4.White;
         }
     }
 }
diff --git a/osu.Game/Screens/Menu/MenuSideFlashes.cs b/osu.Game/Screens/Menu/MenuSideFlashes.cs
index 426896825e5a..80ec14ecee53 100644
--- a/osu.Game/Screens/Menu/MenuSideFlashes.cs
+++ b/osu.Game/Screens/Menu/MenuSideFlashes.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Shapes;
@@ -18,7 +17,6 @@
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Skinning;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -120,12 +118,12 @@ private void flash(Drawable d, double beatLength, bool kiai, ChannelAmplitudes a
              .FadeOut(beatLength, Easing.In);
         }
 
-        protected virtual Color4 GetBaseColour()
+        protected virtual Colour4 GetBaseColour()
         {
-            Color4 baseColour = colours.Blue;
+            Colour4 baseColour = colours.Blue;
 
             if (user.Value?.IsSupporter ?? false)
-                baseColour = skin.Value.GetConfig<GlobalSkinColours, Color4>(GlobalSkinColours.MenuGlow)?.Value ?? baseColour;
+                baseColour = skin.Value.GetConfig<GlobalSkinColours, Colour4>(GlobalSkinColours.MenuGlow)?.Value ?? baseColour;
 
             return baseColour;
         }
@@ -134,8 +132,8 @@ private void updateColour()
         {
             var baseColour = GetBaseColour();
             // linear colour looks better in this case, so let's use it for now.
-            Color4 gradientDark = baseColour.Opacity(0).ToLinear();
-            Color4 gradientLight = baseColour.Opacity(0.6f).ToLinear();
+            Colour4 gradientDark = baseColour.Opacity(0).ToLinear();
+            Colour4 gradientLight = baseColour.Opacity(0.6f).ToLinear();
 
             leftBox.Colour = ColourInfo.GradientHorizontal(gradientLight, gradientDark);
             rightBox.Colour = ColourInfo.GradientHorizontal(gradientDark, gradientLight);
diff --git a/osu.Game/Screens/Menu/MenuTipDisplay.cs b/osu.Game/Screens/Menu/MenuTipDisplay.cs
index ea0bc48e1ea8..420d4fb838b0 100644
--- a/osu.Game/Screens/Menu/MenuTipDisplay.cs
+++ b/osu.Game/Screens/Menu/MenuTipDisplay.cs
@@ -18,7 +18,7 @@
 using osu.Game.Input;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Menu
 {
diff --git a/osu.Game/Screens/Menu/OsuLogo.cs b/osu.Game/Screens/Menu/OsuLogo.cs
index ecd52f95b473..5b8a1bbe1b3f 100644
--- a/osu.Game/Screens/Menu/OsuLogo.cs
+++ b/osu.Game/Screens/Menu/OsuLogo.cs
@@ -22,9 +22,8 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Menu
 {
@@ -206,7 +205,7 @@ public OsuLogo()
                                                                 {
                                                                     RelativeSizeAxes = Axes.Both,
                                                                     Blending = BlendingParameters.Additive,
-                                                                    Colour = Color4.White,
+                                                                    Colour = Colour4.White,
                                                                     Alpha = 0,
                                                                 },
                                                             },
@@ -223,7 +222,7 @@ public OsuLogo()
                                                     Anchor = Anchor.Centre,
                                                     Origin = Anchor.Centre,
                                                     Alpha = 0,
-                                                    BorderColour = Color4.White,
+                                                    BorderColour = Colour4.White,
                                                     RelativeSizeAxes = Axes.Both,
                                                     BorderThickness = 10,
                                                     Masking = true,
@@ -442,7 +441,7 @@ protected override void OnDrag(DragEvent e)
             Vector2 change = e.MousePosition - e.MouseDownPosition;
 
             // Diminish the drag distance as we go further to simulate "rubber band" feeling.
-            change *= change.Length <= 0 ? 0 : MathF.Pow(change.Length, 0.6f) / change.Length;
+            change *= change.Length() <= 0 ? 0 : MathF.Pow(change.Length(), 0.6f) / change.Length();
 
             logoBounceContainer.MoveTo(change);
         }
diff --git a/osu.Game/Screens/Menu/SongTicker.cs b/osu.Game/Screens/Menu/SongTicker.cs
index bc777a19d571..2be642e58fda 100644
--- a/osu.Game/Screens/Menu/SongTicker.cs
+++ b/osu.Game/Screens/Menu/SongTicker.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -12,7 +11,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Menu
 {
diff --git a/osu.Game/Screens/Menu/StarFountain.cs b/osu.Game/Screens/Menu/StarFountain.cs
index 92e9dd6df907..b14da7e98ddc 100644
--- a/osu.Game/Screens/Menu/StarFountain.cs
+++ b/osu.Game/Screens/Menu/StarFountain.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
diff --git a/osu.Game/Screens/Menu/SupporterDisplay.cs b/osu.Game/Screens/Menu/SupporterDisplay.cs
index d33698a8a898..8a2664142e94 100644
--- a/osu.Game/Screens/Menu/SupporterDisplay.cs
+++ b/osu.Game/Screens/Menu/SupporterDisplay.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Menu
 {
@@ -105,7 +104,7 @@ protected override void LoadComplete()
 
                     Schedule(() =>
                     {
-                        heart.FlashColour(Color4.White, 750, Easing.OutQuint).Loop();
+                        heart.FlashColour(Colour4.White, 750, Easing.OutQuint).Loop();
                     });
                 });
             }, true);
diff --git a/osu.Game/Screens/OnlinePlay/Components/DrawableGameType.cs b/osu.Game/Screens/OnlinePlay/Components/DrawableGameType.cs
index d24ad74a68a1..dfb0d1c6c850 100644
--- a/osu.Game/Screens/OnlinePlay/Components/DrawableGameType.cs
+++ b/osu.Game/Screens/OnlinePlay/Components/DrawableGameType.cs
@@ -12,8 +12,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Online.Rooms;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
@@ -132,7 +131,7 @@ private Drawable getIconFor(MatchType matchType)
 
         private partial class VersusRow : FillFlowContainer
         {
-            public VersusRow(Color4 first, Color4 second, float size)
+            public VersusRow(Colour4 first, Colour4 second, float size)
             {
                 var triangleSize = new Vector2(size);
                 AutoSizeAxes = Axes.Both;
diff --git a/osu.Game/Screens/OnlinePlay/Components/OnlinePlayBackgroundScreen.cs b/osu.Game/Screens/OnlinePlay/Components/OnlinePlayBackgroundScreen.cs
index 4f9d1b92460f..f790fc625e3a 100644
--- a/osu.Game/Screens/OnlinePlay/Components/OnlinePlayBackgroundScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Components/OnlinePlayBackgroundScreen.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
@@ -69,7 +68,7 @@ void switchBackground(Background newBackground)
                 }
 
                 newBackground.Depth = newDepth;
-                newBackground.Colour = ColourInfo.GradientVertical(new Color4(0.1f, 0.1f, 0.1f, 1f), new Color4(0.4f, 0.4f, 0.4f, 1f));
+                newBackground.Colour = ColourInfo.GradientVertical(new Colour4(0.1f, 0.1f, 0.1f, 1f), new Colour4(0.4f, 0.4f, 0.4f, 1f));
                 newBackground.BlurTo(new Vector2(10));
 
                 AddInternal(lastBackground = newBackground);
diff --git a/osu.Game/Screens/OnlinePlay/Components/ParticipantsList.cs b/osu.Game/Screens/OnlinePlay/Components/ParticipantsList.cs
index 4a6f5a2e9250..d4428eddf314 100644
--- a/osu.Game/Screens/OnlinePlay/Components/ParticipantsList.cs
+++ b/osu.Game/Screens/OnlinePlay/Components/ParticipantsList.cs
@@ -10,7 +10,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
 using osu.Game.Users.Drawables;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Components/StarRatingRangeDisplay.cs b/osu.Game/Screens/OnlinePlay/Components/StarRatingRangeDisplay.cs
index f5b2bd018de9..2a75ea191421 100644
--- a/osu.Game/Screens/OnlinePlay/Components/StarRatingRangeDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Components/StarRatingRangeDisplay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallenge.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallenge.cs
index 9bbbfbfbd6e7..32cef079904c 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallenge.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallenge.cs
@@ -40,7 +40,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Screens.Play;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
@@ -166,13 +166,15 @@ private void load(AudioManager audio)
                             {
                                 new Drawable[]
                                 {
-                                    playlistItem == null ? new Container() : new DrawableRoomPlaylistItem(playlistItem, true)
-                                    {
-                                        RelativeSizeAxes = Axes.X,
-                                        AllowReordering = false,
-                                        Scale = new Vector2(1.4f),
-                                        Width = 1 / 1.4f,
-                                    }
+                                    playlistItem == null
+                                        ? new Container()
+                                        : new DrawableRoomPlaylistItem(playlistItem, true)
+                                        {
+                                            RelativeSizeAxes = Axes.X,
+                                            AllowReordering = false,
+                                            Scale = new Vector2(1.4f),
+                                            Width = 1 / 1.4f,
+                                        }
                                 },
                                 null,
                                 [
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeCarousel.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeCarousel.cs
index 89c4c0255b35..f47cf7f43b2c 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeCarousel.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeCarousel.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeEventFeed.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeEventFeed.cs
index f60863ece751..d0a3bcfaf38b 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeEventFeed.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeEventFeed.cs
@@ -14,7 +14,7 @@
 using osu.Game.Localisation;
 using osu.Game.Screens.OnlinePlay.DailyChallenge.Events;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeIntro.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeIntro.cs
index 7961547eaebe..9da70bdc3e7a 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeIntro.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeIntro.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -25,8 +24,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Screens.OnlinePlay.Match;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
@@ -220,7 +218,7 @@ private void load(RulesetStore rulesets, BeatmapDifficultyCache difficultyCache,
                                         },
                                         flash = new Box
                                         {
-                                            Colour = Color4.White,
+                                            Colour = Colour4.White,
                                             Blending = BlendingParameters.Additive,
                                             RelativeSizeAxes = Axes.Both,
                                             Depth = float.MinValue,
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeLeaderboard.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeLeaderboard.cs
index cbc020cfffd8..6ea2dc1f113f 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeLeaderboard.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeLeaderboard.cs
@@ -19,7 +19,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Scoring;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeScoreBreakdown.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeScoreBreakdown.cs
index 4b35a5483f0b..38825a35b347 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeScoreBreakdown.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeScoreBreakdown.cs
@@ -19,7 +19,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.DailyChallenge.Events;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTimeRemainingRing.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTimeRemainingRing.cs
index 47ba9e4cd7e4..37a9dcea2bd2 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTimeRemainingRing.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTimeRemainingRing.cs
@@ -14,7 +14,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTotalsDisplay.cs b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTotalsDisplay.cs
index e50ed44522f5..53b2c7e11255 100644
--- a/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTotalsDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/DailyChallenge/DailyChallengeTotalsDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Screens.OnlinePlay.DailyChallenge.Events;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.DailyChallenge
 {
diff --git a/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylist.cs b/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylist.cs
index 4b045f67c5a2..c678c590530f 100644
--- a/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylist.cs
+++ b/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylist.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Input.Bindings;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylistItem.cs b/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylistItem.cs
index 7d61df85af60..72d139e972ce 100644
--- a/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylistItem.cs
+++ b/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylistItem.cs
@@ -36,8 +36,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay
 {
@@ -710,20 +709,20 @@ public PanelBackground()
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = Color4.Black,
+                                Colour = Colour4.Black,
                                 Width = 0.4f,
                             },
                             // Piecewise-linear gradient with 2 segments to make it appear smoother
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = ColourInfo.GradientHorizontal(Color4.Black, new Color4(0f, 0f, 0f, 0.7f)),
+                                Colour = ColourInfo.GradientHorizontal(Colour4.Black, new Colour4(0f, 0f, 0f, 0.7f)),
                                 Width = 0.4f,
                             },
                             new Box
                             {
                                 RelativeSizeAxes = Axes.Both,
-                                Colour = ColourInfo.GradientHorizontal(new Color4(0f, 0f, 0f, 0.7f), new Color4(0, 0, 0, 0.4f)),
+                                Colour = ColourInfo.GradientHorizontal(new Colour4(0f, 0f, 0f, 0.7f), new Colour4(0, 0, 0, 0.4f)),
                                 Width = 0.4f,
                             },
                         }
diff --git a/osu.Game/Screens/OnlinePlay/FooterButtonFreeMods.cs b/osu.Game/Screens/OnlinePlay/FooterButtonFreeMods.cs
index 85299427ebc2..00f76ce9e951 100644
--- a/osu.Game/Screens/OnlinePlay/FooterButtonFreeMods.cs
+++ b/osu.Game/Screens/OnlinePlay/FooterButtonFreeMods.cs
@@ -21,7 +21,7 @@
 using osu.Game.Screens.Footer;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Header.cs b/osu.Game/Screens/OnlinePlay/Header.cs
index a646dc73c9f4..b5e23d2d1b98 100644
--- a/osu.Game/Screens/OnlinePlay/Header.cs
+++ b/osu.Game/Screens/OnlinePlay/Header.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/DrawableRoomParticipantsList.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/DrawableRoomParticipantsList.cs
index 63d41b55cb04..61c77debf7c6 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/DrawableRoomParticipantsList.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/DrawableRoomParticipantsList.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/FreestyleStatusPill.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/FreestyleStatusPill.cs
index b306e27f8405..42ab82329b73 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/FreestyleStatusPill.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/FreestyleStatusPill.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Online.Rooms;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
@@ -32,7 +32,7 @@ protected override void LoadComplete()
             Pill.Background.Colour = colours.Yellow;
 
             TextFlow.Text = "Freestyle";
-            TextFlow.Colour = Color4.Black;
+            TextFlow.Colour = Colour4.Black;
 
             room.PropertyChanged += onRoomPropertyChanged;
             updateFreestyleStatus();
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/PillContainer.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/PillContainer.cs
index 5f7774258886..4146149a354d 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/PillContainer.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/PillContainer.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
@@ -37,7 +36,7 @@ public PillContainer()
                     Background = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         Alpha = 0.5f
                     },
                     new GridContainer
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/RankRangePill.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/RankRangePill.cs
index 09aafa415a47..40374a282a53 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/RankRangePill.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/RankRangePill.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.Multiplayer;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomListing.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomListing.cs
index 78d0b6360fe9..3a95dd32d506 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomListing.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomListing.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Input.Bindings;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomPanel.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomPanel.cs
index d9419fb8204a..4b49fe63bf77 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomPanel.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -31,7 +30,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Components;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomSpecialCategoryPill.cs b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomSpecialCategoryPill.cs
index 9bb3a59d0c18..641560d20339 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomSpecialCategoryPill.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/Components/RoomSpecialCategoryPill.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Online.Rooms;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
@@ -30,7 +30,7 @@ protected override void LoadComplete()
             base.LoadComplete();
 
             Pill.Background.Alpha = 1;
-            TextFlow.Colour = Color4.Black;
+            TextFlow.Colour = Colour4.Black;
 
             room.PropertyChanged += onRoomPropertyChanged;
             updateRoomCategory();
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/LoungeRoomPanel.cs b/osu.Game/Screens/OnlinePlay/Lounge/LoungeRoomPanel.cs
index 4793b51636c7..f41ae0578b68 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/LoungeRoomPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/LoungeRoomPanel.cs
@@ -30,8 +30,7 @@
 using osu.Game.Screens.OnlinePlay.Components;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Playlists;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge
@@ -88,7 +87,7 @@ private void load(AudioManager audio)
                         Masking = true,
                         CornerRadius = CORNER_RADIUS,
                         BorderThickness = selection_border_width,
-                        BorderColour = Color4.White,
+                        BorderColour = Colour4.White,
                         Child = new Box
                         {
                             RelativeSizeAxes = Axes.Both,
@@ -316,7 +315,7 @@ private void joinFailed(string message, Exception? exception) => Schedule(() =>
                 errorText.Text = message;
                 errorText
                     .FadeIn()
-                    .FlashColour(Color4.White, 200)
+                    .FlashColour(Colour4.White, 200)
                     .Delay(1000)
                     .FadeOutFromOne(1000, Easing.In);
 
diff --git a/osu.Game/Screens/OnlinePlay/Lounge/LoungeSubScreen.cs b/osu.Game/Screens/OnlinePlay/Lounge/LoungeSubScreen.cs
index 8f1177ce0132..e95c3f141a07 100644
--- a/osu.Game/Screens/OnlinePlay/Lounge/LoungeSubScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Lounge/LoungeSubScreen.cs
@@ -28,8 +28,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge
 {
@@ -95,7 +94,7 @@ private void load()
             if (idleTracker != null)
                 isIdle.BindTo(idleTracker.IsIdle);
 
-            Color4 bg = Color4Extensions.FromHex("#070405");
+            Colour4 bg = Color4Extensions.FromHex("#070405");
 
             InternalChildren = new Drawable[]
             {
@@ -236,7 +235,7 @@ private void onListingReceived(Room[] result)
             foreach (var r in result)
             {
                 if (localRoomsById.TryGetValue(r.RoomID ?? -1, out Room? existingRoom))
-                    existingRoom?.CopyFrom(r);
+                    existingRoom.CopyFrom(r);
                 else
                     roomListing.Rooms.Add(r);
             }
diff --git a/osu.Game/Screens/OnlinePlay/Match/Components/MatchTypePicker.cs b/osu.Game/Screens/OnlinePlay/Match/Components/MatchTypePicker.cs
index 51bd7a2801b2..e2d8934be965 100644
--- a/osu.Game/Screens/OnlinePlay/Match/Components/MatchTypePicker.cs
+++ b/osu.Game/Screens/OnlinePlay/Match/Components/MatchTypePicker.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Match.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Match/Components/RoomAvailabilityPicker.cs b/osu.Game/Screens/OnlinePlay/Match/Components/RoomAvailabilityPicker.cs
index 56f02ba6332f..d6b8dea23fd7 100644
--- a/osu.Game/Screens/OnlinePlay/Match/Components/RoomAvailabilityPicker.cs
+++ b/osu.Game/Screens/OnlinePlay/Match/Components/RoomAvailabilityPicker.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Components;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Match.Components
 {
@@ -63,7 +62,7 @@ public RoomAvailabilityPickerItem(RoomAvailability value)
                     hover = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Alpha = 0,
                     },
                     new OsuSpriteText
diff --git a/osu.Game/Screens/OnlinePlay/Match/Components/RoomSettingsOverlay.cs b/osu.Game/Screens/OnlinePlay/Match/Components/RoomSettingsOverlay.cs
index 09aed176c41b..f029f5ffcce3 100644
--- a/osu.Game/Screens/OnlinePlay/Match/Components/RoomSettingsOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Match/Components/RoomSettingsOverlay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Input.Bindings;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Match.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/InverseScalingDrawSizePreservingFillContainer.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/InverseScalingDrawSizePreservingFillContainer.cs
index 8e151021104f..04af83b87827 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/InverseScalingDrawSizePreservingFillContainer.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/InverseScalingDrawSizePreservingFillContainer.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking
 {
@@ -15,6 +15,14 @@ public InverseScalingDrawSizePreservingFillContainer()
 
         protected override void Update()
         {
+            // We may want this container to apply scale still, just at a multiplier
+            // of the original scale. Basically in a system like ranked play, we decide
+            // what the max UI scale to be supported is, then adjust the inverse
+            // container's ctor to stay within the appropriate range.
+            //
+            // Will become more important when we have mobile releases live and it is more
+            // of an immediate concern.
+
             Size = new Vector2(CurrentScale);
             Scale = new Vector2(1 / CurrentScale);
         }
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/BeatmapSelectGrid.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/BeatmapSelectGrid.cs
index 27cb78e57943..2a09c87566ad 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/BeatmapSelectGrid.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/BeatmapSelectGrid.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContent.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContent.cs
index 6882ddabe858..03e7484324f6 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContent.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContent.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentBeatmap.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentBeatmap.cs
index 55418a2eab46..a8e08ff46366 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentBeatmap.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentBeatmap.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -30,7 +29,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentRandom.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentRandom.cs
index 3e4130fa8b04..770534d44c97 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentRandom.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.CardContentRandom.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.cs
index 4bee234786f4..1f7764da4221 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanel.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -14,9 +13,8 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
@@ -96,7 +94,7 @@ private void load(OverlayColourProvider colourProvider)
                                 {
                                     AlwaysPresent = true,
                                     Alpha = 0,
-                                    Colour = Color4.Black,
+                                    Colour = Colour4.Black,
                                     RelativeSizeAxes = Axes.Both,
                                 },
                             }
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelBeatmap.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelBeatmap.cs
index 0f70c1b2ed05..146f1d7fece9 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelBeatmap.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelBeatmap.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelRandom.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelRandom.cs
index d7ec134066ce..6ff3e499ebc1 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelRandom.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/MatchmakingSelectPanelRandom.cs
@@ -13,7 +13,7 @@
 using osu.Game.Beatmaps.Drawables.Cards;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/SubScreenBeatmapSelect.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/SubScreenBeatmapSelect.cs
index c7b0c66f46da..0e8332849396 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/SubScreenBeatmapSelect.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/BeatmapSelect/SubScreenBeatmapSelect.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/MatchmakingAvatar.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/MatchmakingAvatar.cs
index 194d0d578bfb..b729755e1058 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/MatchmakingAvatar.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/MatchmakingAvatar.cs
@@ -8,8 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
@@ -62,7 +61,7 @@ private void load(OsuColour colour)
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.LightSlateGray,
+                            Colour = Colour4.LightSlateGray,
                         },
                         new ClickableAvatar(user, true)
                         {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanel.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanel.cs
index 6e21fedad5bf..973f38ce3ba3 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanel.cs
@@ -37,7 +37,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.Results;
 using osu.Game.Screens.Play;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanelOverlay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanelOverlay.cs
index 2f0f830c01d2..e9be75f69ec5 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanelOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/PlayerPanelOverlay.cs
@@ -11,7 +11,7 @@
 using osu.Framework.Utils;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.MatchTypes.Matchmaking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelRoomAward.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelRoomAward.cs
index fb93d5e8047a..de555bba2977 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelRoomAward.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelRoomAward.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -16,7 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.Results
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelUserStatistic.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelUserStatistic.cs
index c1b1be0b2bb0..aeabd6fae346 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelUserStatistic.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/PanelUserStatistic.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.Results
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/SubScreenResults.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/SubScreenResults.cs
index 2f3fb2debb90..001ba3c28f0f 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/SubScreenResults.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/Results/SubScreenResults.cs
@@ -18,7 +18,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.Results
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/RoundResults/SubScreenRoundResults.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/RoundResults/SubScreenRoundResults.cs
index 882c58317f37..0594f461bc56 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/RoundResults/SubScreenRoundResults.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/RoundResults/SubScreenRoundResults.cs
@@ -23,7 +23,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match.RoundResults
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/ScreenMatchmaking.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/ScreenMatchmaking.cs
index 0c0c1006adfa..4a7ea1b16940 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/ScreenMatchmaking.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/ScreenMatchmaking.cs
@@ -34,8 +34,8 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.Gameplay;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.StageSegment.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.StageSegment.cs
index 50806e6b270c..4ae8dd3e0db1 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.StageSegment.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.StageSegment.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.MatchTypes.Matchmaking;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.TimerText.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.TimerText.cs
index e2af3ef94531..699aef0bb99f 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.TimerText.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.TimerText.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Matchmaking;
 using osu.Game.Online.Multiplayer;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.cs
index 53cdc6d85e97..cd55b3417d0e 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Match/StageDisplay.cs
@@ -5,7 +5,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -18,8 +17,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Multiplayer.MatchTypes.Matchmaking;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Match
 {
@@ -52,7 +50,7 @@ private void load(OverlayColourProvider colourProvider)
                 new BufferedContainer(cachedFrameBuffer: true)
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = ColourInfo.GradientVertical(Color4.White, Color4.Transparent),
+                    Colour = ColourInfo.GradientVertical(Colour4.White, Colour4.Transparent),
                     Alpha = 0.8f,
                     Child = new Box
                     {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/CloudVisualisation.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/CloudVisualisation.cs
index 75bb283439b5..be319c601b5f 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/CloudVisualisation.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/CloudVisualisation.cs
@@ -13,7 +13,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match;
 using osu.Game.Screens.Ranking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Queue
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/PoolSelector.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/PoolSelector.cs
index 8b5593eddea8..65dd5c8a52da 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/PoolSelector.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/PoolSelector.cs
@@ -14,9 +14,8 @@
 using osu.Game.Online.Matchmaking;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Queue
 {
@@ -156,7 +155,7 @@ private void load(OverlayColourProvider colourProvider)
                     },
                     flashLayer = new Box
                     {
-                        Colour = Color4.White,
+                        Colour = Colour4.White,
                         Blending = BlendingParameters.Additive,
                         Alpha = 0,
                         RelativeSizeAxes = Axes.Both,
@@ -235,7 +234,7 @@ private void onSelectionChanged(ValueChangedEvent<MatchmakingPool?> selection)
                 if (IsSelected)
                 {
                     this.ScaleTo(1.2f, 200, Easing.OutQuint);
-                    iconSprite.FadeColour(Color4.Gold, 100, Easing.OutQuint);
+                    iconSprite.FadeColour(Colour4.Gold, 100, Easing.OutQuint);
                     flashLayer.FadeTo(0.1f, 200, Easing.OutQuint);
                 }
                 else
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RankedPlayMatchPanel.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RankedPlayMatchPanel.cs
index d8133b9dc981..bb1425512d1d 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RankedPlayMatchPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RankedPlayMatchPanel.cs
@@ -5,7 +5,6 @@
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -21,8 +20,7 @@
 using osu.Game.Overlays;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Queue
 {
@@ -95,7 +93,7 @@ private void load()
                                     RelativeSizeAxes = Axes.Both,
                                     Height = 0.5f,
                                     Masking = true,
-                                    Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.7f), colourProvider.Background4.Opacity(0)),
+                                    Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.7f), colourProvider.Background4.Opacity(0)),
                                     Child = new UserCoverBackground
                                     {
                                         RelativeSizeAxes = Axes.Both,
@@ -109,7 +107,7 @@ private void load()
                                     RelativeSizeAxes = Axes.Both,
                                     Height = 0.5f,
                                     Masking = true,
-                                    Colour = ColourInfo.GradientHorizontal(colourProvider.Background4.Opacity(0), Color4.White.Opacity(0.7f)),
+                                    Colour = ColourInfo.GradientHorizontal(colourProvider.Background4.Opacity(0), Colour4.White.Opacity(0.7f)),
                                     Child = new UserCoverBackground
                                     {
                                         RelativeSizeAxes = Axes.Both,
@@ -125,7 +123,7 @@ private void load()
                                     Child = new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = ColourInfo.GradientHorizontal(Color4.White, Color4.White.Opacity(0))
+                                        Colour = ColourInfo.GradientHorizontal(Colour4.White, Colour4.White.Opacity(0))
                                     }
                                 },
                                 rightResultLight = new Container
@@ -137,7 +135,7 @@ private void load()
                                     Child = new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0), Color4.White)
+                                        Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0), Colour4.White)
                                     },
                                 },
                                 new OsuSpriteText
@@ -161,7 +159,7 @@ private void load()
                                             RelativeSizeAxes = Axes.X,
                                             AutoSizeAxes = Axes.Y,
                                             Direction = FillDirection.Horizontal,
-                                            Colour = Color4.White.Opacity(0.4f),
+                                            Colour = Colour4.White.Opacity(0.4f),
                                             Padding = new MarginPadding(5),
                                             Spacing = new Vector2(5),
                                             Children = new Drawable[]
@@ -192,7 +190,7 @@ private void load()
                                             RelativeSizeAxes = Axes.X,
                                             AutoSizeAxes = Axes.Y,
                                             Direction = FillDirection.Horizontal,
-                                            Colour = Color4.White.Opacity(0.4f),
+                                            Colour = Colour4.White.Opacity(0.4f),
                                             Padding = new MarginPadding(5),
                                             Spacing = new Vector2(5),
                                             Children = new Drawable[]
@@ -259,7 +257,7 @@ private void load()
                                                         Origin = Anchor.Centre,
                                                         Size = new Vector2(12),
                                                         Icon = FontAwesome.Solid.Heart,
-                                                        Colour = Color4.Red,
+                                                        Colour = Colour4.Red,
                                                         TooltipText = "Remaining Life"
                                                     },
                                                     leftLifeText = new OsuSpriteText
@@ -370,7 +368,7 @@ private void load()
                 leftResultLight.Colour = colours.Green;
                 rightResultLight.Colour = colours.Red;
 
-                leftLifeText.Colour = userLeft.Colour = Color4.White;
+                leftLifeText.Colour = userLeft.Colour = Colour4.White;
                 leftLifeText.Font = OsuFont.GetFont(weight: FontWeight.SemiBold);
             }
             else if (rightWin)
@@ -378,7 +376,7 @@ private void load()
                 leftResultLight.Colour = colours.Red;
                 rightResultLight.Colour = colours.Green;
 
-                rightLifeText.Colour = userRight.Colour = Color4.White;
+                rightLifeText.Colour = userRight.Colour = Colour4.White;
                 rightLifeText.Font = OsuFont.GetFont(weight: FontWeight.SemiBold);
             }
         }
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RatingDistributionGraph.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RatingDistributionGraph.cs
index d7c228e0d197..76cf999d9d36 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RatingDistributionGraph.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/RatingDistributionGraph.cs
@@ -16,8 +16,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Queue
 {
@@ -158,7 +157,7 @@ private void load()
                                                 Size = new Vector2(12),
                                                 Masking = true,
                                                 BorderThickness = 2,
-                                                BorderColour = Color4.White,
+                                                BorderColour = Colour4.White,
                                                 Alpha = 0,
                                                 Child = hoverMarkerFill = new Box
                                                 {
@@ -460,7 +459,7 @@ protected override bool OnMouseMove(MouseMoveEvent e)
         {
             float minDistToCursor = float.MaxValue;
             Vector2 closestPointToCursor = Vector2.Zero;
-            Color4 closestColourToCursor = Color4.White;
+            Colour4 closestColourToCursor = Colour4.White;
             int closestRatingToCursor = 0;
             string closestValueToCursor = string.Empty;
 
@@ -679,7 +678,7 @@ public RatingDistributionGraphTooltip()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             Alpha = 0.7f
                         },
                         new FillFlowContainer
@@ -753,7 +752,7 @@ protected override void PopOut()
 
         public class RatingDistributionGraphTooltipData
         {
-            public Color4 Colour;
+            public Colour4 Colour;
             public Vector2 Position;
 
             public int Rating;
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/ScreenQueue.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/ScreenQueue.cs
index 59a29400385a..c67c5b5d7c24 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/ScreenQueue.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/Queue/ScreenQueue.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
@@ -17,6 +18,7 @@
 using osu.Framework.Graphics.Audio;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
 using osu.Framework.Screens;
@@ -29,6 +31,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Online.Chat;
 using osu.Game.Online.Matchmaking;
 using osu.Game.Online.Matchmaking.Requests;
 using osu.Game.Online.Multiplayer;
@@ -39,7 +42,7 @@
 using osu.Game.Screens.Footer;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.Queue
 {
@@ -112,6 +115,8 @@ private void load(AudioManager audio, IAPIProvider api)
             enqueueSample = audio.Samples.Get(@"Multiplayer/Matchmaking/enqueue");
             matchFoundSample = audio.Samples.Get(@"Multiplayer/Matchmaking/match-found");
 
+            LinkFlowContainer experimentalText;
+
             InternalChild = new InverseScalingDrawSizePreservingFillContainer
             {
                 RelativeSizeAxes = Axes.Both,
@@ -159,7 +164,39 @@ private void load(AudioManager audio, IAPIProvider api)
                                                 ],
                                                 Content = new[]
                                                 {
-                                                    new Drawable[] { new QueueSectionHeader("Queued players") },
+                                                    new Drawable[]
+                                                    {
+                                                        new FillFlowContainer
+                                                        {
+                                                            RelativeSizeAxes = Axes.X,
+                                                            AutoSizeAxes = Axes.Y,
+                                                            Children = new Drawable[]
+                                                            {
+                                                                new Container
+                                                                {
+                                                                    RelativeSizeAxes = Axes.X,
+                                                                    AutoSizeAxes = Axes.Y,
+                                                                    Masking = true,
+                                                                    CornerRadius = 5,
+                                                                    Children = new Drawable[]
+                                                                    {
+                                                                        new Box
+                                                                        {
+                                                                            RelativeSizeAxes = Axes.Both,
+                                                                            Colour = colours.Yellow
+                                                                        },
+                                                                        experimentalText = new ExperimentalLinkFlowContainer
+                                                                        {
+                                                                            RelativeSizeAxes = Axes.X,
+                                                                            AutoSizeAxes = Axes.Y,
+                                                                            Padding = new MarginPadding(10),
+                                                                        }
+                                                                    }
+                                                                },
+                                                                new QueueSectionHeader("Queued players")
+                                                            }
+                                                        }
+                                                    },
                                                     new Drawable[]
                                                     {
                                                         new Container
@@ -315,6 +352,15 @@ private void load(AudioManager audio, IAPIProvider api)
                     }
                 }
             };
+
+            experimentalText.AddIcon(FontAwesome.Solid.Lightbulb);
+            experimentalText.AddText(@" ");
+            experimentalText.AddText("This system is under continuous and rapid development.\n", sp => sp.Font = sp.Font.With(weight: FontWeight.SemiBold));
+            experimentalText.AddText("Follow the ");
+            experimentalText.AddLink("changelog", @"https://osu.ppy.sh/community/forums/topics/2202736", sp => sp.Font = sp.Font.With(weight: FontWeight.SemiBold));
+            experimentalText.AddText(" and provide any ");
+            experimentalText.AddLink("feedback", @"https://osu.ppy.sh/community/forums/topics/2198397", sp => sp.Font = sp.Font.With(weight: FontWeight.SemiBold));
+            experimentalText.AddText(" on the osu! forums!");
         }
 
         protected override void LoadComplete()
@@ -780,5 +826,36 @@ public void OnReleased(KeyBindingReleaseEvent<GlobalAction> e)
             {
             }
         }
+
+        private partial class ExperimentalLinkFlowContainer : LinkFlowContainer
+        {
+            public ExperimentalLinkFlowContainer()
+                : base(sp => sp.Colour = Colour4.Black)
+            {
+            }
+
+            protected override DrawableLinkCompiler CreateLinkCompiler(ITextPart textPart)
+                => new LinkCompiler(textPart);
+
+            private partial class LinkCompiler : DrawableLinkCompiler
+            {
+                public LinkCompiler(ITextPart part)
+                    : base(part)
+                {
+                }
+
+                public LinkCompiler(IEnumerable<Drawable> parts)
+                    : base(parts)
+                {
+                }
+
+                [BackgroundDependencyLoader]
+                private void load(OsuColour colours)
+                {
+                    IdleColour = colours.YellowDarker;
+                    HoverColour = Colour4.Black;
+                }
+            }
+        }
     }
 }
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.UserTags.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.UserTags.cs
index decbccc6bf51..b13c16cdb56e 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.UserTags.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.UserTags.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Ranking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.cs
index 21b42b981ee3..f0057f383397 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/CardDetailsOverlayContainer.cs
@@ -12,7 +12,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Screens.Ranking;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.SongPreview.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.SongPreview.cs
index c72fb710c40d..18b65a8c95e6 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.SongPreview.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.SongPreview.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Track;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -20,8 +19,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -175,10 +173,10 @@ private partial class RippleVisualization : BeatSyncedContainer
 
                 public readonly IBindable<bool> TrackRunning = new Bindable<bool>();
 
-                private readonly Color4 accentColour;
+                private readonly Colour4 accentColour;
                 private readonly Container rippleContainer;
 
-                public RippleVisualization(Color4 accentColour)
+                public RippleVisualization(Colour4 accentColour)
                 {
                     this.accentColour = accentColour;
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.cs
index f03077375cbb..8283b69f789b 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCard.cs
@@ -15,8 +15,7 @@
 using osu.Game.Audio;
 using osu.Game.Database;
 using osu.Game.Online.Rooms;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -86,7 +85,7 @@ public RankedPlayCard(RankedPlayCardWithPlaylistItem item)
                         {
                             Type = EdgeEffectType.Shadow,
                             Radius = 5,
-                            Colour = Color4.Black.Opacity(0.1f),
+                            Colour = Colour4.Black.Opacity(0.1f),
                         },
                         Child = new Box
                         {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardBackSide.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardBackSide.cs
index 160fa8edbe9d..6cb16c7b30df 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardBackSide.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardBackSide.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.AttributeListing.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.AttributeListing.cs
index 1fca5b09c0d5..6d13d29b38af 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.AttributeListing.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.AttributeListing.cs
@@ -13,7 +13,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Difficulty;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Colours.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Colours.cs
index f25e5a00b6ff..0e79c8f0ce94 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Colours.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Colours.cs
@@ -6,8 +6,6 @@
 using osu.Framework.Graphics;
 using osu.Game.Graphics;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -15,11 +13,11 @@ public partial class RankedPlayCardContent
     {
         public class CardColours(APIBeatmap beatmap, OsuColour colour)
         {
-            private static readonly Color4 base_background = Color4Extensions.FromHex("#222228");
+            private static readonly Colour4 base_background = Color4Extensions.FromHex("#222228");
 
-            public readonly Color4 Primary = colour.ForStarDifficulty(beatmap.StarRating);
+            public readonly Colour4 Primary = colour.ForStarDifficulty(beatmap.StarRating);
 
-            public Color4 OnPrimary =>
+            public Colour4 OnPrimary =>
                 beatmap.StarRating >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF
                     ? colour.Orange1
                     : getColour(1f, 0.15f);
@@ -30,16 +28,16 @@ public class CardColours(APIBeatmap beatmap, OsuColour colour)
 
             public Colour4 BackgroundLightest => mix(base_background, getColour(0.2f, 0.23f), 0.5f);
 
-            public Color4 OnBackground => getColour(1f, 0.9f, isAccent: true);
+            public Colour4 OnBackground => getColour(1f, 0.9f, isAccent: true);
 
-            public Color4 Border => beatmap.StarRating > 8.0 ? Color4Extensions.FromHex("34044f") : Primary;
+            public Colour4 Border => beatmap.StarRating > 8.0 ? Color4Extensions.FromHex("34044f") : Primary;
 
             public Colour4 PrimaryWithContrastToBackground =>
                 beatmap.StarRating >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF ? OnPrimary : Primary;
 
-            private Color4 getColour(float saturation, float lightness, bool isAccent = false)
+            private Colour4 getColour(float saturation, float lightness, bool isAccent = false)
             {
-                float hue = Primary.ToHSV().h / 360f;
+                float hue = Primary.ToHSV().X;
 
                 // at higher star ratings primary colour can become pure black. in that case we want to just use a very desaturated purple as base
                 if (beatmap.StarRating >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF)
@@ -60,14 +58,14 @@ private Color4 getColour(float saturation, float lightness, bool isAccent = fals
                 }
 
                 return mix(
-                    Color4.FromHsl(new Vector4(hue, saturation, lightness, 1)),
-                    Color4.FromHsl(new Vector4(shadowHue, saturation, lightness, 1)),
+                    Colour4.FromHSL(hue, saturation, lightness),
+                    Colour4.FromHSL(shadowHue, saturation, lightness),
                     colourShift
                 );
             }
         }
 
-        private static Color4 mix(Color4 lhs, Color4 rhs, float alpha) => new Color4(
+        private static Colour4 mix(Colour4 lhs, Colour4 rhs, float alpha) => new Colour4(
             r: float.Lerp(lhs.R, rhs.R, alpha),
             g: float.Lerp(lhs.G, rhs.G, alpha),
             b: float.Lerp(lhs.B, rhs.B, alpha),
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Cover.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Cover.cs
index c3e0d364122f..d5c54dd63f28 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Cover.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Cover.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Beatmaps.Drawables;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Metadata.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Metadata.cs
index 2b935acca6a2..91cf19c12f9a 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Metadata.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.Metadata.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -12,7 +11,8 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using osu.Game.Utils;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -107,7 +107,7 @@ private void load(CardColours colours)
                                 },
                                 new TruncatingSpriteText
                                 {
-                                    Text = FormattableString.Invariant($"{beatmap.StarRating:F2}"),
+                                    Text = beatmap.StarRating.FormatStarRating(),
                                     Anchor = Anchor.CentreRight,
                                     Origin = Anchor.CentreRight,
                                     Font = OsuFont.GetFont(size: 9, weight: FontWeight.Bold),
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.cs
index 6362f303b913..9550220719f5 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardContent.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -14,7 +13,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardExtensions.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardExtensions.cs
index bb7526f8b8b5..1bc21e72f0cb 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardExtensions.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/RankedPlayCardExtensions.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -33,7 +33,7 @@ public static T MatchScreenSpaceDrawQuad<T>(this T target, Quad drawQuad, Compos
 
             target.Position = positionWithOrigin - anchorPosition;
 
-            target.Rotation = MathHelper.RadiansToDegrees(new Line(drawQuad.TopLeft, drawQuad.TopRight).Theta);
+            target.Rotation = float.RadiansToDegrees(new Line(drawQuad.TopLeft, drawQuad.TopRight).Theta);
 
             target.Scale = new Vector2(Vector2.Distance(drawQuad.TopLeft, drawQuad.TopRight) / target.DrawWidth);
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/SongPreviewParticleContainer.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/SongPreviewParticleContainer.cs
index 89319d9fd008..fdb01d9f246b 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/SongPreviewParticleContainer.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Card/SongPreviewParticleContainer.cs
@@ -10,8 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card
 {
@@ -40,7 +39,7 @@ private void load(TextureStore textures)
             }
         }
 
-        public void AddParticles(Drawable source, Color4 seedColour)
+        public void AddParticles(Drawable source, Colour4 seedColour)
         {
             var drawQuad = ToLocalSpace(source.ScreenSpaceDrawQuad);
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/CardFlow.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/CardFlow.cs
index af9985ac27b6..abc736fbe3e6 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/CardFlow.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/CardFlow.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayChatDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayChatDisplay.cs
index 36d28e08a0f8..e709d0ad9f82 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayChatDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayChatDisplay.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -23,8 +22,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
@@ -195,7 +193,7 @@ protected override void LoadComplete()
 
                 BackgroundFocused = Colour4.FromHex("222228");
                 BackgroundUnfocused = BackgroundFocused.Opacity(0.7f);
-                Placeholder.Colour = Color4.White;
+                Placeholder.Colour = Colour4.White;
             }
         }
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayCornerPiece.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayCornerPiece.cs
index 6c4ac160efb6..94a889ef9766 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayCornerPiece.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayCornerPiece.cs
@@ -2,13 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Transforms;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayScoreCounter.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayScoreCounter.cs
index d84df287afc6..6884e7a06b6f 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayScoreCounter.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayScoreCounter.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Transforms;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayStageDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayStageDisplay.cs
index dcc42e1ab7cc..32d8ee096edf 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayStageDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayStageDisplay.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -16,8 +15,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.MatchTypes.RankedPlay;
 using osu.Game.Online.RankedPlay;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
@@ -168,7 +166,7 @@ private void load()
                                     ScaleAdjust = 0.75f,
                                     Alpha = 0.1f,
                                     Blending = BlendingParameters.Additive,
-                                    Colour = ColourInfo.GradientHorizontal(Color4.Transparent, Color4.White)
+                                    Colour = ColourInfo.GradientHorizontal(Colour4.Transparent, Colour4.White)
                                 },
                             ],
                         },
@@ -199,7 +197,6 @@ private void load()
             };
         }
 
-
         protected override void LoadComplete()
         {
             base.LoadComplete();
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayUserDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayUserDisplay.cs
index b64205f10dcb..a7b538fa443b 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayUserDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Components/RankedPlayUserDisplay.cs
@@ -14,16 +14,17 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Utils;
+using osu.Game.Extensions;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Multiplayer;
+using osu.Game.Online.Multiplayer.MatchTypes.RankedPlay;
 using osu.Game.Online.Rooms;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components
 {
@@ -36,13 +37,16 @@ public partial class RankedPlayUserDisplay : CompositeDrawable
             Value = 1_000_000,
         };
 
+        public HealthBar HealthDisplay { get; private set; } = null!;
+
         private readonly APIUser user;
         private readonly Anchor contentAnchor;
         private readonly RankedPlayColourScheme colourScheme;
 
         private BufferedContainer grayScaleContainer = null!;
-
         private OsuSpriteText beatmapState = null!;
+        private OsuSpriteText damageMultiplierText = null!;
+        private OsuSpriteText lastStandText = null!;
 
         private BeatmapAvailability availability = BeatmapAvailability.Unknown();
 
@@ -70,6 +74,14 @@ private void load()
                 ? Anchor.CentreLeft
                 : Anchor.CentreRight;
 
+            var damageMultiplierAnchor = (contentAnchor & Anchor.x0) != 0
+                ? Anchor.CentreRight
+                : Anchor.CentreLeft;
+
+            var lastStandAnchor = (contentAnchor & Anchor.x0) != 0
+                ? Anchor.CentreLeft
+                : Anchor.CentreRight;
+
             InternalChildren =
             [
                 new CircularContainer
@@ -104,6 +116,32 @@ private void load()
                     Direction = FillDirection.Vertical,
                     Children =
                     [
+                        new Container
+                        {
+                            Anchor = contentAnchor,
+                            Origin = contentAnchor,
+                            RelativeSizeAxes = Axes.X,
+                            Height = 16,
+                            Padding = new MarginPadding { Horizontal = 4, Vertical = 6 },
+                            Children =
+                            [
+                                damageMultiplierText = new OsuSpriteText
+                                {
+                                    Anchor = damageMultiplierAnchor,
+                                    Origin = damageMultiplierAnchor,
+                                    Font = OsuFont.GetFont(size: 12, weight: FontWeight.SemiBold),
+                                    UseFullGlyphHeight = false,
+                                },
+                                lastStandText = new OsuSpriteText
+                                {
+                                    Anchor = lastStandAnchor,
+                                    Origin = lastStandAnchor,
+                                    Text = "Last Stand!",
+                                    Font = OsuFont.GetFont(size: 12, weight: FontWeight.SemiBold),
+                                    Alpha = 0,
+                                }
+                            ]
+                        },
                         HealthDisplay = new HealthBar(colourScheme, (contentAnchor & Anchor.x0) != 0, shear)
                         {
                             Health = { BindTarget = Health },
@@ -145,8 +183,6 @@ private void load()
             ];
         }
 
-        public HealthBar HealthDisplay { get; private set; } = null!;
-
         protected override void LoadComplete()
         {
             base.LoadComplete();
@@ -155,12 +191,22 @@ protected override void LoadComplete()
             {
                 grayScaleContainer.GrayscaleTo(e.NewValue <= 0 ? 1 : 0, 300);
                 cornerPiece?.OnHealthChanged(e.NewValue);
+
+                if (e.NewValue == 1)
+                    lastStandText.FadeIn(100).Delay(3000).FadeOut(400);
             });
 
             client.RoomUpdated += onRoomUpdated;
+            onRoomUpdated();
         }
 
         private void onRoomUpdated()
+        {
+            updateBeatmapState();
+            updateDamageMultiplier();
+        }
+
+        private void updateBeatmapState()
         {
             var multiplayerUser = client.Room?.Users.SingleOrDefault(u => u.UserID == user.Id);
 
@@ -191,6 +237,18 @@ private void onRoomUpdated()
             }
         }
 
+        private void updateDamageMultiplier()
+        {
+            if (client.Room?.MatchState is not RankedPlayRoomState roomState)
+                return;
+
+            if (!roomState.Users.TryGetValue(user.Id, out var userInfo))
+                return;
+
+            double totalMultiplier = roomState.DamageMultiplier + userInfo.DamageMultiplier;
+            damageMultiplierText.Text = $"{totalMultiplier.ToStandardFormattedString(maxDecimalDigits: 1)}x damage";
+        }
+
         protected override void Dispose(bool isDisposing)
         {
             base.Dispose(isDisposing);
@@ -299,8 +357,8 @@ public HealthBar(RankedPlayColourScheme colourScheme, bool leftToRight, Vector2
                                         Alpha = 0.1f,
                                         Blending = BlendingParameters.Additive,
                                         Colour = leftToRight
-                                            ? ColourInfo.GradientHorizontal(Color4.Transparent, Color4.White)
-                                            : ColourInfo.GradientHorizontal(Color4.White, Color4.Transparent),
+                                            ? ColourInfo.GradientHorizontal(Colour4.Transparent, Colour4.White)
+                                            : ColourInfo.GradientHorizontal(Colour4.White, Colour4.Transparent),
                                     },
                                 ],
                             },
@@ -310,7 +368,7 @@ public HealthBar(RankedPlayColourScheme colourScheme, bool leftToRight, Vector2
                     {
                         RelativeSizeAxes = Axes.Both,
                         Shear = -shear,
-                        BackgroundColour = Color4.White.Opacity(0), // workaround for non-premultiplied alpha blending of white content on transparent background
+                        BackgroundColour = Colour4.White.Opacity(0), // workaround for non-premultiplied alpha blending of white content on transparent background
                         Child = new FillFlowContainer
                         {
                             RelativeSizeAxes = Axes.Both,
@@ -380,7 +438,7 @@ public HealthBar(RankedPlayColourScheme colourScheme, bool leftToRight, Vector2
                                     content.CreateView().With(d =>
                                     {
                                         d.SynchronisedDrawQuad = true;
-                                        d.Colour = Color4.Red;
+                                        d.Colour = Colour4.Red;
                                     })
                                 ],
                             },
@@ -419,7 +477,7 @@ private void onHealthChanged(ValueChangedEvent<int> e)
                                    .Then(delay: 1100)
                                    .FadeOut(200);
 
-                    healthBarBackground.FadeColour(Color4.Red, 100)
+                    healthBarBackground.FadeColour(Colour4.Red, 100)
                                        .Then()
                                        .FadeColour(healthBarColour, 1000);
 
@@ -456,7 +514,7 @@ private void flashHealth()
                 if (Health.NormalizedValue > HealthFlashThreshold)
                     return;
 
-                var almostRed = Interpolation.ValueAt(0.75, healthBarColour, ColourInfo.SingleColour(Color4.Red), 0.0, 1.0);
+                var almostRed = Interpolation.ValueAt(0.75, healthBarColour, ColourInfo.SingleColour(Colour4.Red), 0.0, 1.0);
 
                 healthBarBackground.FadeColour(almostRed, 150)
                                    .Then()
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/DiscardScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/DiscardScreen.cs
index 4e906964f0a9..35b661fd84ea 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/DiscardScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/DiscardScreen.cs
@@ -23,7 +23,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/EndedScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/EndedScreen.cs
index 46798343c695..35d9325e82a3 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/EndedScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/EndedScreen.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Multiplayer.MatchTypes.RankedPlay;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -92,7 +91,7 @@ private void load(OsuColour colours, AudioManager audio)
                                     new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = Color4.Black,
+                                        Colour = Colour4.Black,
                                         Alpha = 0.5f
                                     },
                                     new Container
@@ -126,7 +125,7 @@ private void load(OsuColour colours, AudioManager audio)
                                     new Box
                                     {
                                         RelativeSizeAxes = Axes.Both,
-                                        Colour = Color4.Black,
+                                        Colour = Colour4.Black,
                                         Alpha = 0.5f
                                     },
                                     new Container
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayScreen.cs
index 71fbaeacbd2a..0d5607b9a271 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayScreen.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.DifficultyDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.DifficultyDisplay.cs
index 74ff2d6027d2..0ba380030092 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.DifficultyDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.DifficultyDisplay.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -19,7 +18,6 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
 using osu.Game.Screens.Select;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -53,7 +51,7 @@ private partial class DifficultyDisplay : CompositeDrawable
             private BeatmapTitleWedge.DifficultyStatisticsDisplay difficultyStatisticsDisplay = null!;
 
             private float lastDifficultyTextMaxWidth = float.NaN;
-            private Color4 lastAccentColour;
+            private Colour4 lastAccentColour;
 
             public DifficultyDisplay(APIBeatmap beatmap)
             {
@@ -231,7 +229,7 @@ protected override void Update()
                 }
 
                 // Use difficulty colour until it gets too dark to be visible against dark backgrounds.
-                Color4 col = starRatingDisplay.DisplayedStars.Value >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF ? colours.Orange1 : starRatingDisplay.DisplayedDifficultyColour;
+                Colour4 col = starRatingDisplay.DisplayedStars.Value >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF ? colours.Orange1 : starRatingDisplay.DisplayedDifficultyColour;
 
                 if (col != lastAccentColour)
                 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.MetadataWedge.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.MetadataWedge.cs
index e5a02ab60066..9a243e73cf0e 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.MetadataWedge.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.MetadataWedge.cs
@@ -12,7 +12,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.TitleWedge.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.TitleWedge.cs
index 381b12bbf8f0..178dae2308b1 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.TitleWedge.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.TitleWedge.cs
@@ -17,7 +17,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Select;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.cs
index 7932c7afa2f0..6b7f2835a8c7 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/GameplayWarmupScreen.cs
@@ -11,7 +11,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Localisation;
-
 using osu.Game.Beatmaps;
 using osu.Game.Database;
 using osu.Game.Graphics.Containers;
@@ -23,7 +22,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/HamburgerMenu.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/HamburgerMenu.cs
index 87e2e383ba29..6a81b974c63d 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/HamburgerMenu.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/HamburgerMenu.cs
@@ -15,8 +15,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -59,7 +58,7 @@ protected override void LoadComplete()
                 ScheduleAfterChildren(() => GetContainingFocusManager()!.ChangeFocus(this));
             }
 
-            private void addButton(LocalisableString text, IconUsage? icon, Action? action, Color4? colour = null)
+            private void addButton(LocalisableString text, IconUsage? icon, Action? action, Colour4? colour = null)
             {
                 var button = new OptionButton
                 {
@@ -80,7 +79,7 @@ private void addButton(LocalisableString text, IconUsage? icon, Action? action,
             private partial class OptionButton : OsuButton
             {
                 public IconUsage Icon { get; init; }
-                public Color4? TextColour { get; init; }
+                public Colour4? TextColour { get; init; }
 
                 public OptionButton()
                 {
@@ -90,7 +89,7 @@ public OptionButton()
                 [BackgroundDependencyLoader]
                 private void load()
                 {
-                    SpriteText.Colour = TextColour ?? Color4.White;
+                    SpriteText.Colour = TextColour ?? Colour4.White;
                     Content.CornerRadius = 10;
 
                     Add(new SpriteIcon
@@ -100,7 +99,7 @@ private void load()
                         Size = new Vector2(17),
                         X = 15,
                         Icon = Icon,
-                        Colour = TextColour ?? Color4.White,
+                        Colour = TextColour ?? Colour4.White,
                     });
                 }
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.HandCard.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.HandCard.cs
index 74b68ba8a146..87520daf2e9b 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.HandCard.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.HandCard.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Utils;
 using osu.Game.Online.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.cs
index 27103371c0bf..692b95b373bf 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/HandOfCards.cs
@@ -14,7 +14,7 @@
 using osu.Game.Online.Multiplayer.MatchTypes.RankedPlay;
 using osu.Game.Online.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand
 {
@@ -344,7 +344,7 @@ protected Vector2 GetArcPosition(float x)
 
         protected static Vector2 GetCardUpwardsDirection(float rotation)
         {
-            float angle = MathHelper.DegreesToRadians(rotation - 90);
+            float angle = float.DegreesToRadians(rotation - 90);
 
             return new Vector2(MathF.Cos(angle), MathF.Sin(angle));
         }
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/OpponentHandOfCards.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/OpponentHandOfCards.cs
index c73680deb4cc..414d2426d595 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/OpponentHandOfCards.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/OpponentHandOfCards.cs
@@ -4,7 +4,7 @@
 using System;
 using System.Collections.Generic;
 using osu.Game.Online.RankedPlay;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.PlayerHandCard.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.PlayerHandCard.cs
index b2dee4106e2b..cd4c57611ec1 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.PlayerHandCard.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.PlayerHandCard.cs
@@ -9,8 +9,8 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.cs
index 17d99a7ebd0a..848fda997662 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Hand/PlayerHandOfCards.cs
@@ -13,8 +13,8 @@
 using osu.Game.Audio;
 using osu.Game.Online.RankedPlay;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/CoverReveal.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/CoverReveal.cs
index fe25ab85016b..b008776418ce 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/CoverReveal.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/CoverReveal.cs
@@ -1,15 +1,13 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Transforms;
 using osu.Game.Graphics.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Intro
 {
@@ -44,7 +42,7 @@ public CoverReveal(RankedPlayColourScheme colourScheme)
                                 RelativeSizeAxes = Axes.Both,
                                 RelativePositionAxes = Axes.X,
                                 ClampAxes = Axes.None,
-                                Colour = ColourInfo.GradientHorizontal(Color4.White, Color4.White.Opacity(0)),
+                                Colour = ColourInfo.GradientHorizontal(Colour4.White, Colour4.White.Opacity(0)),
                             },
                             bottomLayer = new Box
                             {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/StarRatingSequence.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/StarRatingSequence.cs
index f084b008189f..2847d974a6fd 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/StarRatingSequence.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/StarRatingSequence.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Intro
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/VsSequence.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/VsSequence.cs
index 0bd7d0e28755..565a51c08270 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/VsSequence.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/Intro/VsSequence.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Intro
 {
@@ -44,7 +42,7 @@ private void load()
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                 },
                 new Container
                 {
@@ -61,7 +59,7 @@ private void load()
                             Height = 0.5f,
                             Anchor = Anchor.BottomCentre,
                             Origin = Anchor.BottomCentre,
-                            Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.5f), Color4.White.Opacity(0.85f)),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.5f), Colour4.White.Opacity(0.85f)),
                             Alpha = 0,
                             AlwaysPresent = true,
                         },
@@ -74,7 +72,7 @@ private void load()
                             Height = 0.5f,
                             Anchor = Anchor.TopCentre,
                             Origin = Anchor.TopCentre,
-                            Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.85f), Color4.White.Opacity(0.5f)),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.85f), Colour4.White.Opacity(0.5f)),
                             Alpha = 0,
                             AlwaysPresent = true,
                         },
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/OpponentPickScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/OpponentPickScreen.cs
index 764954b83f5b..29a1e46bd19a 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/OpponentPickScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/OpponentPickScreen.cs
@@ -15,7 +15,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -153,7 +153,6 @@ private void cardPlayed(RankedPlayCardWithPlaylistItem item) => Task.Run(async (
 
             Schedule(() =>
             {
-
                 if (opponentHand.RemoveCard(item, out var card, out var drawQuad))
                 {
                     card.MatchScreenSpaceDrawQuad(drawQuad, CenterRow);
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/PickScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/PickScreen.cs
index bbb0fa438a3c..591898f524fd 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/PickScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/PickScreen.cs
@@ -17,7 +17,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Card;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Hand;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -270,7 +270,6 @@ private void onPlayButtonClicked()
 
         private void cardPlayed(RankedPlayCardWithPlaylistItem item)
         {
-
             if (playerHand.RemoveCard(item, out var card, out var drawQuad))
             {
                 card.MatchScreenSpaceDrawQuad(drawQuad, CenterRow);
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackground.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackground.cs
index af6fcc8f20b6..ca61a14f4f9c 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackground.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackground.cs
@@ -8,15 +8,14 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
     public partial class RankedPlayBackground : CompositeDrawable
     {
-        public Color4 GradientBottom = Color4Extensions.FromHex("#15061e");
-        public Color4 GradientTop = Color4Extensions.FromHex("#240d36");
+        public Colour4 GradientBottom = Color4Extensions.FromHex("#15061e");
+        public Colour4 GradientTop = Color4Extensions.FromHex("#240d36");
 
         private BufferedContainer triangles1Buffered = null!;
         private Box bgBox = null!;
@@ -45,8 +44,8 @@ private void load()
                             ClampAxes = Axes.Y,
                             Velocity = 0.5f,
                             TriangleScale = 4,
-                            ColourLight = Color4.White,
-                            ColourDark = Color4.White,
+                            ColourLight = Colour4.White,
+                            ColourDark = Colour4.White,
                             RelativeSizeAxes = Axes.Both,
                         },
                     }
@@ -63,7 +62,7 @@ private void load()
             ];
         }
 
-        public void FadeColours(Color4 top, Color4 bottom)
+        public void FadeColours(Colour4 top, Colour4 bottom)
         {
             this.TransformTo(nameof(GradientTop), top, 1500, Easing.OutQuint);
             this.TransformTo(nameof(GradientBottom), bottom, 1500, Easing.OutQuint);
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackgroundScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackgroundScreen.cs
index 2ac03403fdab..78485a3e87bf 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackgroundScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayBackgroundScreen.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Transforms;
 using osu.Game.Beatmaps;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayColourScheme.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayColourScheme.cs
index a961cc5cc11c..d6723db91ab1 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayColourScheme.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayColourScheme.cs
@@ -2,17 +2,17 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Extensions.Color4Extensions;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
     public class RankedPlayColourScheme
     {
-        public required Color4 Primary;
-        public required Color4 PrimaryDarker;
-        public required Color4 PrimaryDarkest;
-        public required Color4 Surface;
-        public required Color4 SurfaceBorder;
+        public required Colour4 Primary;
+        public required Colour4 PrimaryDarker;
+        public required Colour4 PrimaryDarkest;
+        public required Colour4 Surface;
+        public required Colour4 SurfaceBorder;
 
         public static readonly RankedPlayColourScheme BLUE = new RankedPlayColourScheme
         {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayScreen.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayScreen.cs
index 4de7e8e3fb24..3238e0166910 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayScreen.cs
@@ -35,12 +35,12 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Intro;
 using osu.Game.Screens.OnlinePlay.Multiplayer;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
     [Cached]
-    public partial class RankedPlayScreen : OsuScreen, IPreviewTrackOwner, IHandlePresentBeatmap
+    public sealed partial class RankedPlayScreen : OsuScreen, IPreviewTrackOwner, IHandlePresentBeatmap
     {
         protected override bool InitialBackButtonVisibility => false;
 
@@ -103,6 +103,8 @@ public partial class RankedPlayScreen : OsuScreen, IPreviewTrackOwner, IHandlePr
         private readonly Bindable<Visibility> cornerPieceVisibility = new Bindable<Visibility>();
         private readonly Bindable<bool> showBeatmapBackground = new Bindable<bool>();
 
+        private readonly Container content;
+
         [Cached]
         private readonly RankedPlayChatDisplay chat;
 
@@ -127,45 +129,53 @@ public RankedPlayScreen(MultiplayerRoom room)
             InternalChildren = new Drawable[]
             {
                 matchInfo = new RankedPlayMatchInfo(),
+                backgroundMusic = new BackgroundMusicManager(),
                 new RankedPlayBeatmapAvailabilityTracker(),
                 new GlobalScrollAdjustsVolume(),
-                new PopoverContainer
+                content = new InverseScalingDrawSizePreservingFillContainer
                 {
-                    RelativeSizeAxes = Axes.Both,
-                    Child = new OsuContextMenuContainer
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Children = new Drawable[]
                     {
-                        RelativeSizeAxes = Axes.Both,
-                        Children = new Drawable[]
+                        new PopoverContainer
                         {
-                            screenContainer = new Container<RankedPlaySubScreen>
+                            RelativeSizeAxes = Axes.Both,
+                            Child = new OsuContextMenuContainer
                             {
                                 RelativeSizeAxes = Axes.Both,
-                            },
-                            chat = new RankedPlayChatDisplay(room)
-                            {
-                                Anchor = Anchor.BottomRight,
-                                Origin = Anchor.BottomRight,
-                                Margin = new MarginPadding
+                                Children = new Drawable[]
                                 {
-                                    Bottom = 10,
-                                    Right = 10
-                                },
-                                State = { Value = Visibility.Hidden }
-                            },
-                            new HamburgerMenu
-                            {
-                                Size = new Vector2(56),
+                                    screenContainer = new Container<RankedPlaySubScreen>
+                                    {
+                                        RelativeSizeAxes = Axes.Both,
+                                    },
+                                    new HamburgerMenu
+                                    {
+                                        Size = new Vector2(56),
+                                    }
+                                }
                             }
-                        }
-                    }
+                        },
+                        stageOverlayContainer = new Container
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                        },
+                        overlayContainer = new CardDetailsOverlayContainer(),
+                        particleContainer = new SongPreviewParticleContainer(),
+                    },
                 },
-                stageOverlayContainer = new Container
+                chat = new RankedPlayChatDisplay(room)
                 {
-                    RelativeSizeAxes = Axes.Both,
+                    Anchor = Anchor.BottomRight,
+                    Origin = Anchor.BottomRight,
+                    Margin = new MarginPadding
+                    {
+                        Bottom = 10,
+                        Right = 10
+                    },
+                    State = { Value = Visibility.Hidden }
                 },
-                overlayContainer = new CardDetailsOverlayContainer(),
-                particleContainer = new SongPreviewParticleContainer(),
-                backgroundMusic = new BackgroundMusicManager()
             };
         }
 
@@ -198,7 +208,7 @@ protected override void LoadComplete()
             localUser = users.GetUserAsync(localUserId).GetResultSafely() ?? api.LocalUser.Value;
             opponentUser = users.GetUserAsync(opponentUserId).GetResultSafely() ?? APIUser.UnknownUser(opponentUserId);
 
-            AddRangeInternal([
+            content.AddRange([
                 new RankedPlayCornerPiece(RankedPlayColourScheme.BLUE, Anchor.BottomLeft)
                 {
                     State = { BindTarget = cornerPieceVisibility },
@@ -249,7 +259,6 @@ public void ShowScreen(RankedPlaySubScreen screen)
                 if (screen.ShowStageOverlay)
                 {
                     APIUser? pickingUser = null;
-                    double? multiplier = matchInfo.Stage.Value < RankedPlayStage.CardPlay ? null : matchInfo.RoomState.DamageMultiplier;
                     RankedPlayColourScheme colourScheme = RankedPlayColourScheme.BLUE;
 
                     if (matchInfo.Stage.Value == RankedPlayStage.CardPlay && matchInfo.RoomState.ActiveUser != null)
@@ -261,7 +270,6 @@ public void ShowScreen(RankedPlaySubScreen screen)
                     stageOverlayContainer.Add(new RankedPlayStageOverlay(screen.StageHeading, colourScheme)
                     {
                         PickingUser = pickingUser,
-                        Multiplier = multiplier,
                     });
 
                     rankedPlayBackground.ColourScheme = colourScheme;
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayStageOverlay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayStageOverlay.cs
index b8527e347b1b..657ce31afb08 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayStageOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/RankedPlayStageOverlay.cs
@@ -9,13 +9,12 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Localisation;
-using osu.Game.Extensions;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Users.Drawables;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -25,7 +24,6 @@ public partial class RankedPlayStageOverlay : CompositeDrawable
         private readonly RankedPlayColourScheme colourScheme;
 
         public APIUser? PickingUser { get; init; }
-        public double? Multiplier { get; init; }
 
         private FillFlowContainer displayContainer = null!;
         private FillFlowContainer detailsContainer = null!;
@@ -151,18 +149,6 @@ private void load(AudioManager audio)
                 });
             }
 
-            if (Multiplier != null)
-            {
-                detailsContainer.Add(new OsuSpriteText
-                {
-                    Anchor = Anchor.CentreLeft,
-                    Origin = Anchor.CentreLeft,
-                    UseFullGlyphHeight = false,
-                    Font = OsuFont.Torus.With(size: 32),
-                    Text = $"{Multiplier.Value.ToStandardFormattedString(maxDecimalDigits: 1)}x damage",
-                });
-            }
-
             stageChangeSample = audio.Samples.Get(@"Multiplayer/Matchmaking/Ranked/stage-change");
         }
 
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.MainPanel.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.MainPanel.cs
index 4cfb25b9f7ff..e535a7e0d8bf 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.MainPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.MainPanel.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -22,8 +23,7 @@
 using osu.Game.Scoring;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Match.BeatmapSelect;
 using osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay.Components;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
@@ -43,7 +43,7 @@ private partial class MainPanel : CompositeDrawable
             private RankedPlayMatchInfo matchInfo { get; set; } = null!;
 
             [Resolved]
-            private OsuColour colour { get; set; } = null!;
+            private OsuColour colours { get; set; } = null!;
 
             private static Vector2 cardSize => new Vector2(950, 550);
 
@@ -59,6 +59,11 @@ private partial class MainPanel : CompositeDrawable
             private RankedPlayScoreCounter opponentScoreCounter = null!;
             private RankedPlayScoreCounter damageCounter = null!;
             private OsuSpriteText flyingDamageText = null!;
+
+            private FillFlowContainer damageBreakdownContainer = null!;
+            private OsuSpriteText damageBreakdownValueText = null!;
+            private OsuSpriteText damageBreakdownSourceText = null!;
+
             private ScoreBar playerScoreBar = null!;
             private ScoreBar opponentScoreBar = null!;
             private OsuSpriteText roundNumber = null!;
@@ -287,24 +292,35 @@ private void load(AudioManager audio)
                                         BypassAutoSizeAxes = Axes.Both,
                                         Alpha = 0,
                                     },
-                                    new OsuSpriteText
+                                ]
+                            },
+                            damageBreakdownContainer = new FillFlowContainer
+                            {
+                                Anchor = Anchor.Centre,
+                                Origin = Anchor.Centre,
+                                Direction = FillDirection.Vertical,
+                                Spacing = new Vector2(-5),
+                                Alpha = 0,
+                                Children =
+                                [
+                                    damageBreakdownValueText = new OsuSpriteText
                                     {
-                                        BypassAutoSizeAxes = Axes.Both,
-                                        Text = $"{matchInfo.RoomState.DamageMultiplier.ToStandardFormattedString(maxDecimalDigits: 1)}x",
-                                        Anchor = Anchor.CentreRight,
+                                        Anchor = Anchor.Centre,
                                         Origin = Anchor.Centre,
-                                        Font = OsuFont.GetFont(weight: FontWeight.SemiBold, size: 42),
-                                        Rotation = 30,
-                                        Alpha = 0,
-                                        Colour = colour.RedLight
+                                        Font = OsuFont.GetFont(size: 22, weight: FontWeight.SemiBold),
+                                        Colour = colours.Yellow
                                     },
+                                    damageBreakdownSourceText = new OsuSpriteText
+                                    {
+                                        Anchor = Anchor.Centre,
+                                        Origin = Anchor.Centre,
+                                        Font = OsuFont.GetFont(size: 16),
+                                    }
                                 ]
                             },
                             new OsuSpriteText
                             {
-                                Text = Precision.AlmostEquals(matchInfo.RoomState.DamageMultiplier, 1)
-                                    ? "Damage"
-                                    : $"Damage {matchInfo.RoomState.DamageMultiplier.ToStandardFormattedString(maxDecimalDigits: 1)}x",
+                                Text = "Damage",
                                 Anchor = Anchor.TopCentre,
                                 Origin = Anchor.Centre,
                                 Font = OsuFont.GetFont(weight: FontWeight.SemiBold, size: 22),
@@ -389,7 +405,7 @@ private void playAnimation()
                     playerScoreCounter.TransformValueTo(PlayerScore.TotalScore, score_text_duration - 500);
                     opponentScoreCounter.TransformValueTo(OpponentScore.TotalScore, score_text_duration - 500);
 
-                    damageCounter.TransformValueTo(losingDamageInfo.Damage, score_text_duration - 500);
+                    damageCounter.TransformValueTo(losingDamageInfo.DirectDamage, score_text_duration - 500);
 
                     long maxAchievableScore = Math.Max(
                         Math.Max(PlayerScore.TotalScore, OpponentScore.TotalScore),
@@ -476,6 +492,61 @@ private void playAnimation()
 
                 delay += 800;
 
+                List<(int rawDamage, string displayValue, string source)> damageBreakdowns = [];
+
+                if (!Precision.AlmostEquals(1, losingDamageInfo.Multiplier))
+                {
+                    damageBreakdowns.Add((
+                        (int)Math.Ceiling(losingDamageInfo.DirectDamage * losingDamageInfo.Multiplier) - losingDamageInfo.DirectDamage,
+                        $"x{losingDamageInfo.Multiplier.ToStandardFormattedString(maxDecimalDigits: 1)}",
+                        "multiplier"
+                    ));
+                }
+
+                if (losingDamageInfo.BonusDamage != 0)
+                {
+                    damageBreakdowns.Add((
+                        losingDamageInfo.BonusDamage,
+                        $"{losingDamageInfo.BonusDamage:+#,##0;-#,##0}",
+                        "bonus"
+                    ));
+                }
+
+                foreach (var breakdown in damageBreakdowns)
+                {
+                    using (BeginDelayedSequence(delay))
+                    {
+                        Schedule(() =>
+                        {
+                            damageBreakdownValueText.Text = breakdown.displayValue;
+                            damageBreakdownSourceText.Text = breakdown.source;
+                        });
+
+                        damageBreakdownContainer.MoveToX(120)
+                                                .FadeInFromZero(400);
+
+                        using (BeginDelayedSequence(1000))
+                        {
+                            damageBreakdownContainer.MoveTo(Vector2.Zero, 400, Easing.OutQuint)
+                                                    .FadeOut(200, Easing.OutQuint);
+
+                            Schedule(() =>
+                            {
+                                damageCounter.SetValueInstantly(damageCounter.Value + breakdown.rawDamage);
+                                damageCounter
+                                    .ScaleTo(new Vector2(1.25f), 200, Easing.OutQuint)
+                                    .Then()
+                                    .ScaleTo(Vector2.One, 200);
+                            });
+                        }
+                    }
+
+                    delay += 1400;
+                }
+
+                if (damageBreakdowns.Count > 0)
+                    delay += 600;
+
                 bool playerTookDamage = OpponentScore.TotalScore > PlayerScore.TotalScore;
                 double loserPanDirection = playerTookDamage ? -OsuGameBase.SFX_STEREO_STRENGTH : OsuGameBase.SFX_STEREO_STRENGTH;
 
@@ -533,7 +604,7 @@ private void playAnimation()
                                 particle.FadeOut(600)
                                         .ScaleTo(0, 600)
                                         .RotateTo(particle.Rotation + RNG.NextSingle(-20, 20), 600)
-                                        .FadeColour(Color4.Red, 600)
+                                        .FadeColour(Colour4.Red, 600)
                                         .Expire();
                             }
                         }, text_movement_duration);
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreDetails.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreDetails.cs
index f8a55e8778d9..47a6d2af8fe4 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreDetails.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreDetails.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreRankDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreRankDisplay.cs
index b3981f05812f..38f6f8203e8a 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreRankDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreRankDisplay.cs
@@ -8,7 +8,7 @@
 using osu.Game.Online.Leaderboards;
 using osu.Game.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreStatisticsDisplay.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreStatisticsDisplay.cs
index a621fd5b6c11..704199aeebed 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreStatisticsDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlay/ResultsScreen.ScoreStatisticsDisplay.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Scoring;
 using osu.Game.Screens.Select;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking.RankedPlay
 {
diff --git a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlayBottomOrnament.cs b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlayBottomOrnament.cs
index d2d9b56bf5f3..9124ad9052fe 100644
--- a/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlayBottomOrnament.cs
+++ b/osu.Game/Screens/OnlinePlay/Matchmaking/RankedPlayBottomOrnament.cs
@@ -17,7 +17,7 @@
 using osu.Game.Localisation;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.OnlinePlay.Matchmaking
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/GameplayMatchScoreDisplay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/GameplayMatchScoreDisplay.cs
index b4373d728fb6..778d1117d073 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/GameplayMatchScoreDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/GameplayMatchScoreDisplay.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MatchStartControl.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MatchStartControl.cs
index 196eafa20cdd..a3de679a50cc 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MatchStartControl.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MatchStartControl.cs
@@ -17,7 +17,7 @@
 using osu.Game.Online.Multiplayer.Countdown;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Dialog;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerCountdownButton.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerCountdownButton.cs
index c885e613e4d2..9611b3e71440 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerCountdownButton.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerCountdownButton.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Online.Multiplayer;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchSettingsOverlay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchSettingsOverlay.cs
index 2faaec401e8a..9af8c9566bdf 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchSettingsOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerMatchSettingsOverlay.cs
@@ -21,7 +21,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Screens.OnlinePlay.Match.Components;
-using osuTK;
+using System.Numerics;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerSpectateButton.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerSpectateButton.cs
index 3f207f6fa10c..2ec2d0f68159 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerSpectateButton.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerSpectateButton.cs
@@ -15,7 +15,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerHistoryList.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerHistoryList.cs
index 14b1aa38be9a..23526cf9d9c6 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerHistoryList.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerHistoryList.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerQueueList.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerQueueList.cs
index fbd0a4cb193c..a4c973e04ce6 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerQueueList.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerQueueList.cs
@@ -10,7 +10,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerMatchSubScreen.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerMatchSubScreen.cs
index 73cc12644635..deab4691ccfd 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerMatchSubScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerMatchSubScreen.cs
@@ -41,7 +41,7 @@
 using osu.Game.Screens.OnlinePlay.Playlists;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 using ParticipantsList = osu.Game.Screens.OnlinePlay.Multiplayer.Participants.ParticipantsList;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPlayer.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPlayer.cs
index 66e98d1c322e..1e92d381af65 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPlayer.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPlayer.cs
@@ -20,7 +20,7 @@
 using osu.Game.Screens.Play.Leaderboards;
 using osu.Game.Screens.Ranking;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPositionDisplay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPositionDisplay.cs
index f2cbc41d16a9..38469fee075c 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPositionDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerPositionDisplay.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -19,8 +18,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
@@ -78,8 +76,8 @@ private void load(IGameplayLeaderboardProvider leaderboardProvider, IAPIProvider
                         new Circle
                         {
                             Colour = ColourInfo.GradientHorizontal(
-                                Color4.White.Opacity(max_alpha),
-                                Color4.White.Opacity(min_alpha)
+                                Colour4.White.Opacity(max_alpha),
+                                Colour4.White.Opacity(min_alpha)
                             ),
                             RelativeSizeAxes = Axes.Both,
                             Masking = true,
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomPanel.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomPanel.cs
index 9811d768463c..2306addb8f62 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomPanel.cs
@@ -10,7 +10,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.OnlinePlay.Match.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerSkipOverlay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerSkipOverlay.cs
index e44cb16f8ef0..58081a147a1e 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerSkipOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerSkipOverlay.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -22,8 +21,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Screens.Play;
 using osu.Game.Screens.Ranking;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
@@ -105,7 +103,7 @@ public partial class Button : OsuClickableContainer
             private const float chevron_y = 0.4f;
             private const float secondary_y = 0.7f;
 
-            public static readonly Color4 COLOUR_GRAY = OsuColour.Gray(0.4f);
+            public static readonly Colour4 COLOUR_GRAY = OsuColour.Gray(0.4f);
 
             private Box background = null!;
             private Box box = null!;
@@ -142,7 +140,7 @@ private void load(AudioManager audio)
                     background = new Box
                     {
                         Alpha = 0.2f,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                     aspect = new AspectContainer
@@ -305,7 +303,7 @@ protected override bool OnClick(ClickEvent e)
 
                 sampleConfirm.Play();
 
-                box.FlashColour(Color4.White, 500, Easing.OutQuint);
+                box.FlashColour(Colour4.White, 500, Easing.OutQuint);
                 aspect.ScaleTo(1.2f, 2000, Easing.OutQuint);
 
                 base.OnClick(e);
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerTeamResultsScreen.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerTeamResultsScreen.cs
index ab83860ba70a..79573edf17af 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerTeamResultsScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerTeamResultsScreen.cs
@@ -18,7 +18,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs
index 6dba4cb35d15..65516f9ad1cd 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs
@@ -31,8 +31,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
@@ -124,7 +123,7 @@ private void load()
                                     Origin = Anchor.CentreRight,
                                     RelativeSizeAxes = Axes.Both,
                                     Width = 0.75f,
-                                    Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0), Color4.White.Opacity(0.25f))
+                                    Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0), Colour4.White.Opacity(0.25f))
                                 },
                                 new FillFlowContainer
                                 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/StateDisplay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/StateDisplay.cs
index d4291e91a7d6..90a63837a720 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/StateDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/StateDisplay.cs
@@ -13,8 +13,7 @@
 using osu.Game.Online;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
@@ -65,7 +64,7 @@ private void load(OsuColour colours)
                                 RelativeSizeAxes = Axes.Both,
                                 Anchor = Anchor.Centre,
                                 Origin = Anchor.Centre,
-                                BackgroundColour = Color4.Black.Opacity(0.4f),
+                                BackgroundColour = Colour4.Black.Opacity(0.4f),
                                 FillColour = colours.Blue,
                                 Alpha = 0f,
                             },
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/TeamDisplay.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/TeamDisplay.cs
index e85ffec97be1..2f77594a7516 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/TeamDisplay.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/TeamDisplay.cs
@@ -17,8 +17,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.MatchTypes.TeamVersus;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
@@ -71,7 +70,7 @@ private void load(AudioManager audio)
                         Origin = Anchor.Centre,
                         Child = new Box
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             RelativeSizeAxes = Axes.Both,
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorScreen.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorScreen.cs
index c5309a17f7e9..7c4bb9883ef9 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorScreen.cs
@@ -20,7 +20,7 @@
 using osu.Game.Screens.Play.Leaderboards;
 using osu.Game.Screens.Spectate;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.Cell.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.Cell.cs
index edb9b5465504..83cd128dd6fc 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.Cell.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.Cell.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Input.Events;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
 {
diff --git a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.cs b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.cs
index c3ad14dba287..abadfa008ea8 100644
--- a/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.cs
+++ b/osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/PlayerGrid.cs
@@ -6,8 +6,7 @@
 using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
 {
@@ -122,7 +121,7 @@ private void toggleMaximisationState(Cell target)
                     cell.SetFacade(facadeContainer[cell.FacadeIndex], false);
                 }
 
-                cell.FadeColour(hasMaximised && cell != target ? Color4.Gray : Color4.White, ANIMATION_DELAY, Easing.OutQuint);
+                cell.FadeColour(hasMaximised && cell != target ? Colour4.Gray : Colour4.White, ANIMATION_DELAY, Easing.OutQuint);
             }
 
             facadeContainer.ScaleTo(hasMaximised ? 0.95f : 1, ANIMATION_DELAY, Easing.OutQuint);
diff --git a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomFooter.cs b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomFooter.cs
index f9b1edcd59de..9b82668a8154 100644
--- a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomFooter.cs
+++ b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomFooter.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
 {
diff --git a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSettingsOverlay.cs b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSettingsOverlay.cs
index cb3989a31d2e..46c37aee7f1d 100644
--- a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSettingsOverlay.cs
+++ b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSettingsOverlay.cs
@@ -24,7 +24,7 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
 using osu.Game.Screens.OnlinePlay.Match.Components;
-using osuTK;
+using System.Numerics;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
diff --git a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSubScreen.cs b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSubScreen.cs
index b6c856109c24..0f3486bdfe6e 100644
--- a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSubScreen.cs
+++ b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsRoomSubScreen.cs
@@ -38,7 +38,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
diff --git a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.PlaylistTray.cs b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.PlaylistTray.cs
index b46759915315..94e38b7683c2 100644
--- a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.PlaylistTray.cs
+++ b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.PlaylistTray.cs
@@ -3,7 +3,6 @@
 
 using System.ComponentModel;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -15,7 +14,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 using Container = osu.Framework.Graphics.Containers.Container;
 
 namespace osu.Game.Screens.OnlinePlay.Playlists
diff --git a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.cs b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.cs
index 2ab1deaf6628..f97901080e16 100644
--- a/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.cs
+++ b/osu.Game/Screens/OnlinePlay/Playlists/PlaylistsSongSelect.cs
@@ -14,8 +14,8 @@
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
-using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets;
+using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Scoring;
 using osu.Game.Screens.Footer;
diff --git a/osu.Game/Screens/Play/ArgonKeyCounterDisplay.cs b/osu.Game/Screens/Play/ArgonKeyCounterDisplay.cs
index d5044b9f06b9..b42117e09e46 100644
--- a/osu.Game/Screens/Play/ArgonKeyCounterDisplay.cs
+++ b/osu.Game/Screens/Play/ArgonKeyCounterDisplay.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/BeatmapMetadataDisplay.cs b/osu.Game/Screens/Play/BeatmapMetadataDisplay.cs
index fedeadcb3544..679e61710c83 100644
--- a/osu.Game/Screens/Play/BeatmapMetadataDisplay.cs
+++ b/osu.Game/Screens/Play/BeatmapMetadataDisplay.cs
@@ -20,7 +20,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 using CommonStrings = osu.Game.Localisation.CommonStrings;
 
 namespace osu.Game.Screens.Play
diff --git a/osu.Game/Screens/Play/Break/BreakArrows.cs b/osu.Game/Screens/Play/Break/BreakArrows.cs
index 40474a7137c7..03c5fff8750a 100644
--- a/osu.Game/Screens/Play/Break/BreakArrows.cs
+++ b/osu.Game/Screens/Play/Break/BreakArrows.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.Break
 {
diff --git a/osu.Game/Screens/Play/Break/BreakInfo.cs b/osu.Game/Screens/Play/Break/BreakInfo.cs
index 28c38dce2b11..a95231d46d24 100644
--- a/osu.Game/Screens/Play/Break/BreakInfo.cs
+++ b/osu.Game/Screens/Play/Break/BreakInfo.cs
@@ -9,7 +9,7 @@
 using osu.Game.Localisation;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.Break
 {
diff --git a/osu.Game/Screens/Play/Break/GlowIcon.cs b/osu.Game/Screens/Play/Break/GlowIcon.cs
index a68cfdac427f..b885658dc33f 100644
--- a/osu.Game/Screens/Play/Break/GlowIcon.cs
+++ b/osu.Game/Screens/Play/Break/GlowIcon.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.Break
 {
diff --git a/osu.Game/Screens/Play/BreakOverlay.cs b/osu.Game/Screens/Play/BreakOverlay.cs
index 73f887bfe6e0..30fb31ecf7b8 100644
--- a/osu.Game/Screens/Play/BreakOverlay.cs
+++ b/osu.Game/Screens/Play/BreakOverlay.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
diff --git a/osu.Game/Screens/Play/DelayedResumeOverlay.cs b/osu.Game/Screens/Play/DelayedResumeOverlay.cs
index 8acb94a5af29..81468eda7f95 100644
--- a/osu.Game/Screens/Play/DelayedResumeOverlay.cs
+++ b/osu.Game/Screens/Play/DelayedResumeOverlay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/FailAnimationContainer.cs b/osu.Game/Screens/Play/FailAnimationContainer.cs
index ebb0d7772620..5804134f99c7 100644
--- a/osu.Game/Screens/Play/FailAnimationContainer.cs
+++ b/osu.Game/Screens/Play/FailAnimationContainer.cs
@@ -8,7 +8,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Track;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -21,8 +20,7 @@
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -92,7 +90,7 @@ private void load(AudioManager audio, IBindable<WorkingBeatmap> beatmap)
                 Content,
                 redFlashLayer = new Box
                 {
-                    Colour = Color4.Red.Opacity(0.6f),
+                    Colour = Colour4.Red.Opacity(0.6f),
                     RelativeSizeAxes = Axes.Both,
                     Blending = BlendingParameters.Additive,
                     Depth = float.MinValue,
@@ -139,14 +137,14 @@ public void Start()
 
             Content.Add(new Box
             {
-                Colour = Color4.Black,
+                Colour = Colour4.Black,
                 RelativeSizeAxes = Axes.Both,
                 Depth = float.MaxValue
             });
 
             Content.ScaleTo(0.85f, duration, Easing.OutQuart);
             Content.RotateTo(1, duration, Easing.OutQuart);
-            Content.FadeColour(Color4.Gray, duration);
+            Content.FadeColour(Colour4.Gray, duration);
 
             // Will be restored by `ApplyToBackground` logic in `SongSelect`.
             Background?.FadeColour(OsuColour.Gray(0.3f), 60);
diff --git a/osu.Game/Screens/Play/FailOverlay.cs b/osu.Game/Screens/Play/FailOverlay.cs
index 7ede0ac2f40d..63362db05277 100644
--- a/osu.Game/Screens/Play/FailOverlay.cs
+++ b/osu.Game/Screens/Play/FailOverlay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Scoring;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/GameplayMenuOverlay.cs b/osu.Game/Screens/Play/GameplayMenuOverlay.cs
index ee69acfbe114..335864bad8b6 100644
--- a/osu.Game/Screens/Play/GameplayMenuOverlay.cs
+++ b/osu.Game/Screens/Play/GameplayMenuOverlay.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -27,8 +26,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -93,7 +91,7 @@ private void load(OsuColour colours, GameHost? host)
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = background_alpha,
                 },
                 new FillFlowContainer
@@ -125,7 +123,7 @@ private void load(OsuColour colours, GameHost? host)
                             EdgeEffect = new EdgeEffectParameters
                             {
                                 Type = EdgeEffectType.Shadow,
-                                Colour = Color4.Black.Opacity(0.6f),
+                                Colour = Colour4.Black.Opacity(0.6f),
                                 Radius = 50
                             },
                         },
@@ -147,7 +145,7 @@ private void load(OsuColour colours, GameHost? host)
                 AddButton(GameplayMenuOverlayStrings.Retry, colours.YellowDark, () => OnRetry.Invoke());
 
             if (OnQuit != null)
-                AddButton(GameplayMenuOverlayStrings.Quit, new Color4(170, 27, 39, 255), () => OnQuit.Invoke());
+                AddButton(GameplayMenuOverlayStrings.Quit, new Colour4(170, 27, 39, 255), () => OnQuit.Invoke());
 
             State.ValueChanged += _ => InternalButtons.Deselect();
 
@@ -187,7 +185,7 @@ protected override void PopOut()
             stopPauseLoop();
         }
 
-        protected void AddButton(LocalisableString text, Color4 colour, Action? action)
+        protected void AddButton(LocalisableString text, Colour4 colour, Action? action)
         {
             var button = new Button
             {
diff --git a/osu.Game/Screens/Play/GameplayOffsetControl.cs b/osu.Game/Screens/Play/GameplayOffsetControl.cs
index 2f0cb821ecec..34c57297649a 100644
--- a/osu.Game/Screens/Play/GameplayOffsetControl.cs
+++ b/osu.Game/Screens/Play/GameplayOffsetControl.cs
@@ -10,8 +10,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
 using osu.Game.Screens.Play.PlayerSettings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -60,7 +59,7 @@ private void load(OverlayColourProvider? colourProvider)
                 {
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0.8f,
-                    Colour = colourProvider?.Background4 ?? Color4.Black,
+                    Colour = colourProvider?.Background4 ?? Colour4.Black,
                 },
                 new FillFlowContainer
                 {
diff --git a/osu.Game/Screens/Play/HUD/ArgonAccuracyCounter.cs b/osu.Game/Screens/Play/HUD/ArgonAccuracyCounter.cs
index c4cf52c2541e..7bdda068de01 100644
--- a/osu.Game/Screens/Play/HUD/ArgonAccuracyCounter.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonAccuracyCounter.cs
@@ -11,7 +11,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/ArgonComboCounter.cs b/osu.Game/Screens/Play/HUD/ArgonComboCounter.cs
index 22d65601cd73..46aa49f0385b 100644
--- a/osu.Game/Screens/Play/HUD/ArgonComboCounter.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonComboCounter.cs
@@ -12,8 +12,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -54,7 +53,7 @@ private void load(ScoreProcessor scoreProcessor)
                     .ScaleTo(Vector2.One, duration, Easing.OutQuint);
 
                 if (wasMiss)
-                    Text.FlashColour(Color4.Red, duration, Easing.OutQuint);
+                    Text.FlashColour(Colour4.Red, duration, Easing.OutQuint);
             });
         }
 
diff --git a/osu.Game/Screens/Play/HUD/ArgonCounterTextComponent.cs b/osu.Game/Screens/Play/HUD/ArgonCounterTextComponent.cs
index ccc7629f02ae..6c61ec07e1e8 100644
--- a/osu.Game/Screens/Play/HUD/ArgonCounterTextComponent.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonCounterTextComponent.cs
@@ -14,8 +14,7 @@
 using osu.Framework.Text;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -27,8 +26,8 @@ public partial class ArgonCounterTextComponent : CompositeDrawable, IHasText
 
         public IBindable<float> WireframeOpacity { get; } = new BindableFloat();
         public Bindable<bool> ShowLabel { get; } = new BindableBool();
-        public Bindable<Color4> LabelColour { get; } = new Bindable<Color4>(Color4.White);
-        public Bindable<Color4> TextColour { get; } = new Bindable<Color4>(Color4.White);
+        public Bindable<Colour4> LabelColour { get; } = new Bindable<Colour4>(Colour4.White);
+        public Bindable<Colour4> TextColour { get; } = new Bindable<Colour4>(Colour4.White);
 
         public Container NumberContainer { get; private set; }
 
diff --git a/osu.Game/Screens/Play/HUD/ArgonHealthDisplay.cs b/osu.Game/Screens/Play/HUD/ArgonHealthDisplay.cs
index 44f021f93ec6..a27b8e9555a6 100644
--- a/osu.Game/Screens/Play/HUD/ArgonHealthDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonHealthDisplay.cs
@@ -17,8 +17,7 @@
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Screens.Play.HUD.ArgonHealthDisplayParts;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -97,10 +96,10 @@ private void load()
                         Child = glowBar = new ArgonHealthDisplayBar
                         {
                             RelativeSizeAxes = Axes.Both,
-                            BarColour = Color4.White,
+                            BarColour = Colour4.White,
                             GlowColour = main_bar_glow_colour,
                             Blending = BlendingParameters.Additive,
-                            Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0.8f), Color4.White),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0.8f), Colour4.White),
                             PathRadius = glow_path_radius,
                             GlowPortion = (glow_path_radius - MAIN_PATH_RADIUS * (1f - main_path_glow_portion)) / glow_path_radius,
                         }
diff --git a/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBackground.cs b/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBackground.cs
index b486465cb0fa..a6da6a430e86 100644
--- a/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBackground.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBackground.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Shaders.Types;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD.ArgonHealthDisplayParts
 {
diff --git a/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBar.cs b/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBar.cs
index 115b8704ea25..9462c29b28d9 100644
--- a/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBar.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonHealthDisplayParts/ArgonHealthDisplayBar.cs
@@ -4,15 +4,14 @@
 using System;
 using System.Runtime.InteropServices;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Rendering;
 using osu.Framework.Graphics.Shaders;
 using osu.Framework.Graphics.Shaders.Types;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using Vector2 = System.Numerics.Vector2;
+using Vector4 = System.Numerics.Vector4;
 
 namespace osu.Game.Screens.Play.HUD.ArgonHealthDisplayParts
 {
@@ -70,7 +69,7 @@ public Colour4 BarColour
                 field = value;
                 Invalidate(Invalidation.DrawNode);
             }
-        } = Color4.White;
+        } = Colour4.White;
 
         public Colour4 GlowColour
         {
@@ -83,7 +82,7 @@ public Colour4 GlowColour
                 field = value;
                 Invalidate(Invalidation.DrawNode);
             }
-        } = Color4.White.Opacity(0);
+        } = Colour4.White.Opacity(0);
 
         [BackgroundDependencyLoader]
         private void load(ShaderManager shaders)
@@ -108,8 +107,8 @@ public ArgonBarPathDrawNode(ArgonHealthDisplayBar source)
             private Vector2 progressRange;
             private float pathRadius;
             private float glowPortion;
-            private Color4 barColour;
-            private Color4 glowColour;
+            private Colour4 barColour;
+            private Colour4 glowColour;
 
             public override void ApplyState()
             {
diff --git a/osu.Game/Screens/Play/HUD/ArgonSongProgressBar.cs b/osu.Game/Screens/Play/HUD/ArgonSongProgressBar.cs
index 670631ecec57..abd97aabdd2f 100644
--- a/osu.Game/Screens/Play/HUD/ArgonSongProgressBar.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonSongProgressBar.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Localisation;
 using osu.Framework.Utils;
 using osu.Game.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -31,6 +31,9 @@ public partial class ArgonSongProgressBar : SongProgressBar, IHasTooltip
         private readonly ColourInfo mainColour;
         private ColourInfo catchUpColour;
 
+        // Cached state to avoid calling ChangeInternalChildDepth every frame.
+        private bool audioBarBehindPlayfieldBar;
+
         public double Progress { get; set; }
 
         private double trackTime => (EndTime - StartTime) * Progress;
@@ -135,10 +138,13 @@ protected override void Update()
             playfieldBar.Length = (float)Interpolation.Lerp(playfieldBar.Length, Progress, Math.Clamp(Time.Elapsed / 40, 0, 1));
             audioBar.Length = (float)Interpolation.Lerp(audioBar.Length, AudioProgress, Math.Clamp(Time.Elapsed / 40, 0, 1));
 
-            if (trackTime > AudioTime)
-                ChangeInternalChildDepth(audioBar, -1);
-            else
-                ChangeInternalChildDepth(audioBar, 1);
+            bool shouldBeBehind = trackTime > AudioTime;
+
+            if (shouldBeBehind != audioBarBehindPlayfieldBar)
+            {
+                audioBarBehindPlayfieldBar = shouldBeBehind;
+                ChangeInternalChildDepth(audioBar, shouldBeBehind ? -1 : 1);
+            }
 
             float timeDelta = (float)Math.Abs(AudioTime - trackTime);
 
diff --git a/osu.Game/Screens/Play/HUD/ArgonSongProgressGraph.cs b/osu.Game/Screens/Play/HUD/ArgonSongProgressGraph.cs
index 4fdc6b830267..10beb40a8432 100644
--- a/osu.Game/Screens/Play/HUD/ArgonSongProgressGraph.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonSongProgressGraph.cs
@@ -4,7 +4,6 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
diff --git a/osu.Game/Screens/Play/HUD/ArgonWedgePiece.cs b/osu.Game/Screens/Play/HUD/ArgonWedgePiece.cs
index 810100532b6e..4ccd44c2370b 100644
--- a/osu.Game/Screens/Play/HUD/ArgonWedgePiece.cs
+++ b/osu.Game/Screens/Play/HUD/ArgonWedgePiece.cs
@@ -11,7 +11,7 @@
 using osu.Game.Configuration;
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Skinning;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/BPMCounter.cs b/osu.Game/Screens/Play/HUD/BPMCounter.cs
index 9cd285db4c76..eaee40c2e8e6 100644
--- a/osu.Game/Screens/Play/HUD/BPMCounter.cs
+++ b/osu.Game/Screens/Play/HUD/BPMCounter.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/ClicksPerSecond/ClicksPerSecondCounter.cs b/osu.Game/Screens/Play/HUD/ClicksPerSecond/ClicksPerSecondCounter.cs
index a1cccdef0abf..6ad0bd2323e6 100644
--- a/osu.Game/Screens/Play/HUD/ClicksPerSecond/ClicksPerSecondCounter.cs
+++ b/osu.Game/Screens/Play/HUD/ClicksPerSecond/ClicksPerSecondCounter.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD.ClicksPerSecond
 {
diff --git a/osu.Game/Screens/Play/HUD/DefaultHealthDisplay.cs b/osu.Game/Screens/Play/HUD/DefaultHealthDisplay.cs
index c5434f8784a6..2316a337bf51 100644
--- a/osu.Game/Screens/Play/HUD/DefaultHealthDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultHealthDisplay.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -11,8 +10,7 @@
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -43,15 +41,15 @@ public partial class DefaultHealthDisplay : HealthDisplay, IHasAccentColour, ISe
 
         private readonly Container fill;
 
-        public Color4 AccentColour
+        public Colour4 AccentColour
         {
             get => fill.Colour;
             set => fill.Colour = value;
         }
 
-        private Color4 glowColour;
+        private Colour4 glowColour;
 
-        public Color4 GlowColour
+        public Colour4 GlowColour
         {
             get => glowColour;
             set
@@ -92,7 +90,7 @@ public DefaultHealthDisplay()
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     },
                     fill = new Container
                     {
diff --git a/osu.Game/Screens/Play/HUD/DefaultKeyCounter.cs b/osu.Game/Screens/Play/HUD/DefaultKeyCounter.cs
index f7ac72035ff8..9f238479523d 100644
--- a/osu.Game/Screens/Play/HUD/DefaultKeyCounter.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultKeyCounter.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -21,8 +20,8 @@ public partial class DefaultKeyCounter : KeyCounter
         private SpriteText countSpriteText = null!;
 
         //further: change default values here and in KeyCounterCollection if needed, instead of passing them in every constructor
-        public Color4 KeyDownTextColor { get; set; } = Color4.DarkGray;
-        public Color4 KeyUpTextColor { get; set; } = Color4.White;
+        public Colour4 KeyDownTextColor { get; set; } = Colour4.DarkGray;
+        public Colour4 KeyUpTextColor { get; set; } = Colour4.White;
         public double FadeTime { get; set; }
 
         public DefaultKeyCounter(InputTrigger trigger)
diff --git a/osu.Game/Screens/Play/HUD/DefaultKeyCounterDisplay.cs b/osu.Game/Screens/Play/HUD/DefaultKeyCounterDisplay.cs
index dfb547453e82..a9ddd4742df2 100644
--- a/osu.Game/Screens/Play/HUD/DefaultKeyCounterDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultKeyCounterDisplay.cs
@@ -4,7 +4,6 @@
 using System.Linq;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -30,9 +29,9 @@ public DefaultKeyCounterDisplay()
             KeyUpTextColor = KeyUpTextColor,
         };
 
-        private Color4 keyDownTextColor = Color4.DarkGray;
+        private Colour4 keyDownTextColor = Colour4.DarkGray;
 
-        public Color4 KeyDownTextColor
+        public Colour4 KeyDownTextColor
         {
             get => keyDownTextColor;
             set
@@ -46,9 +45,9 @@ public Color4 KeyDownTextColor
             }
         }
 
-        private Color4 keyUpTextColor = Color4.White;
+        private Colour4 keyUpTextColor = Colour4.White;
 
-        public Color4 KeyUpTextColor
+        public Colour4 KeyUpTextColor
         {
             get => keyUpTextColor;
             set
diff --git a/osu.Game/Screens/Play/HUD/DefaultRankDisplay.cs b/osu.Game/Screens/Play/HUD/DefaultRankDisplay.cs
index b3910349de11..789a69ff779a 100644
--- a/osu.Game/Screens/Play/HUD/DefaultRankDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultRankDisplay.cs
@@ -13,7 +13,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/DefaultSongProgress.cs b/osu.Game/Screens/Play/HUD/DefaultSongProgress.cs
index 06d541d83858..632d29660c57 100644
--- a/osu.Game/Screens/Play/HUD/DefaultSongProgress.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultSongProgress.cs
@@ -12,7 +12,7 @@
 using osu.Game.Localisation.HUD;
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Rulesets.Objects;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/DefaultSongProgressBar.cs b/osu.Game/Screens/Play/HUD/DefaultSongProgressBar.cs
index 5945f2a1045a..48268983fe58 100644
--- a/osu.Game/Screens/Play/HUD/DefaultSongProgressBar.cs
+++ b/osu.Game/Screens/Play/HUD/DefaultSongProgressBar.cs
@@ -6,14 +6,13 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
     public partial class DefaultSongProgressBar : SongProgressBar
     {
-        public Color4 FillColour
+        public Colour4 FillColour
         {
             set => fill.Colour = value;
         }
@@ -36,7 +35,7 @@ public DefaultSongProgressBar(float barHeight, float handleBarHeight, Vector2 ha
                     Origin = Anchor.BottomLeft,
                     RelativeSizeAxes = Axes.X,
                     Height = barHeight,
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     Alpha = 0.5f,
                     Depth = 1,
                 },
@@ -54,7 +53,7 @@ public DefaultSongProgressBar(float barHeight, float handleBarHeight, Vector2 ha
                     Anchor = Anchor.BottomLeft,
                     Width = 2,
                     Alpha = 0,
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Position = new Vector2(2, 0),
                     Children = new Drawable[]
                     {
@@ -77,7 +76,7 @@ public DefaultSongProgressBar(float barHeight, float handleBarHeight, Vector2 ha
                                 {
                                     Name = "Handle box",
                                     RelativeSizeAxes = Axes.Both,
-                                    Colour = Color4.White
+                                    Colour = Colour4.White
                                 }
                             }
                         }
diff --git a/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboard.cs b/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboard.cs
index cd3ee730187e..789222e07a3f 100644
--- a/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboard.cs
+++ b/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboard.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -14,8 +13,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Screens.Play.Leaderboards;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -186,22 +184,22 @@ protected override void Update()
                 bool requireBottomFade = requiresScroll && bottomY >= fadeBottom;
 
                 if (!requireTopFade && !requireBottomFade)
-                    c.Colour = Color4.White;
+                    c.Colour = Colour4.White;
                 else if (topY > fadeBottom + panel_height || bottomY < fadeTop - panel_height)
-                    c.Colour = Color4.Transparent;
+                    c.Colour = Colour4.Transparent;
                 else
                 {
                     if (requireBottomFade)
                     {
                         c.Colour = ColourInfo.GradientVertical(
-                            Color4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / panel_height, 1)),
-                            Color4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / panel_height, 1)));
+                            Colour4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / panel_height, 1)),
+                            Colour4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / panel_height, 1)));
                     }
                     else if (requiresScroll)
                     {
                         c.Colour = ColourInfo.GradientVertical(
-                            Color4.White.Opacity(Math.Min(1 - (fadeTop - topY) / panel_height, 1)),
-                            Color4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / panel_height, 1)));
+                            Colour4.White.Opacity(Math.Min(1 - (fadeTop - topY) / panel_height, 1)),
+                            Colour4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / panel_height, 1)));
                     }
                 }
             }
diff --git a/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboardScore.cs b/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboardScore.cs
index f7220e98ac8c..247b53c0e237 100644
--- a/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboardScore.cs
+++ b/osu.Game/Screens/Play/HUD/DrawableGameplayLeaderboardScore.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -20,8 +19,7 @@
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -67,7 +65,7 @@ public Func<ScoringMode, long> GetDisplayScore
             set => getDisplayScoreFunction = value;
         }
 
-        public Color4? BackgroundColour { get; }
+        public Colour4? BackgroundColour { get; }
 
         public IUser? User { get; }
 
@@ -341,12 +339,12 @@ private void updatePanelState()
         {
             positionText.Text = ScorePosition.Value.HasValue ? $"#{ScorePosition.Value.Value.FormatRank()}" : "-";
 
-            Color4 usernameColour = Color4.White;
+            Colour4 usernameColour = Colour4.White;
             bool widthExtension = false;
 
             if (HasQuit.Value)
             {
-                setPanelColour(Color4.Gray);
+                setPanelColour(Colour4.Gray);
                 usernameColour = colours.Red2;
             }
             else if (ScorePosition.Value == 1)
@@ -373,7 +371,7 @@ private void updatePanelState()
             leftLayer.ResizeWidthTo(widthExtension ? extended_left_panel_width : regular_left_panel_width, panel_transition_duration, Easing.OutElastic);
         }
 
-        private void setPanelColour(Color4 baseColour)
+        private void setPanelColour(Colour4 baseColour)
         {
             leftLayerGradient.Colour = ColourInfo.GradientVertical(baseColour.Opacity(0.2f), baseColour.Opacity(0.5f));
             rightLayerGradient.Colour = ColourInfo.GradientVertical(baseColour.Opacity(0.1f), baseColour.Opacity(0.3f));
diff --git a/osu.Game/Screens/Play/HUD/FailingLayer.cs b/osu.Game/Screens/Play/HUD/FailingLayer.cs
index 2bac7660b3e2..d3d17c53b887 100644
--- a/osu.Game/Screens/Play/HUD/FailingLayer.cs
+++ b/osu.Game/Screens/Play/HUD/FailingLayer.cs
@@ -6,7 +6,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -15,7 +14,6 @@
 using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Scoring;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -59,14 +57,14 @@ public FailingLayer()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientHorizontal(Color4.White, Color4.White.Opacity(0)),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.White, Colour4.White.Opacity(0)),
                             Width = gradient_size,
                         },
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
                             Width = gradient_size,
-                            Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(0), Color4.White),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(0), Colour4.White),
                             Anchor = Anchor.TopRight,
                             Origin = Anchor.TopRight,
                         },
diff --git a/osu.Game/Screens/Play/HUD/HitErrorMeters/BarHitErrorMeter.cs b/osu.Game/Screens/Play/HUD/HitErrorMeters/BarHitErrorMeter.cs
index f632c3abad99..e7b464607345 100644
--- a/osu.Game/Screens/Play/HUD/HitErrorMeters/BarHitErrorMeter.cs
+++ b/osu.Game/Screens/Play/HUD/HitErrorMeters/BarHitErrorMeter.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -20,7 +19,7 @@
 using osu.Game.Localisation.HUD;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Play.HUD.HitErrorMeters
 {
diff --git a/osu.Game/Screens/Play/HUD/HitErrorMeters/ColourHitErrorMeter.cs b/osu.Game/Screens/Play/HUD/HitErrorMeters/ColourHitErrorMeter.cs
index 671149e95149..b0df0fbe14eb 100644
--- a/osu.Game/Screens/Play/HUD/HitErrorMeters/ColourHitErrorMeter.cs
+++ b/osu.Game/Screens/Play/HUD/HitErrorMeters/ColourHitErrorMeter.cs
@@ -14,7 +14,7 @@
 using osu.Game.Localisation.HUD;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD.HitErrorMeters
 {
diff --git a/osu.Game/Screens/Play/HUD/HitErrorMeters/HitErrorMeter.cs b/osu.Game/Screens/Play/HUD/HitErrorMeters/HitErrorMeter.cs
index 9f183192b6ae..04e01ec3bed6 100644
--- a/osu.Game/Screens/Play/HUD/HitErrorMeters/HitErrorMeter.cs
+++ b/osu.Game/Screens/Play/HUD/HitErrorMeters/HitErrorMeter.cs
@@ -10,7 +10,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osu.Game.Skinning;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.Play.HUD.HitErrorMeters
 {
@@ -56,7 +56,7 @@ protected override void LoadComplete()
         /// <param name="judgement">The new judgement.</param>
         protected abstract void OnNewJudgement(JudgementResult judgement);
 
-        protected Color4 GetColourForHitResult(HitResult result)
+        protected Colour4 GetColourForHitResult(HitResult result)
         {
             return colours.ForHitResult(result);
         }
diff --git a/osu.Game/Screens/Play/HUD/HoldForMenuButton.cs b/osu.Game/Screens/Play/HUD/HoldForMenuButton.cs
index 2772e7514c07..c9104a8d268a 100644
--- a/osu.Game/Screens/Play/HUD/HoldForMenuButton.cs
+++ b/osu.Game/Screens/Play/HUD/HoldForMenuButton.cs
@@ -22,8 +22,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -234,7 +233,7 @@ private void bind()
 
                     if (IsDangerousAction)
                     {
-                        Colour = Interpolation.ValueAt(progress.NewValue, Color4.White, Color4.Red, 0, 1, Easing.OutQuint);
+                        Colour = Interpolation.ValueAt(progress.NewValue, Colour4.White, Colour4.Red, 0, 1, Easing.OutQuint);
 
                         if (progress.NewValue > 0 && progress.NewValue < 1)
                         {
diff --git a/osu.Game/Screens/Play/HUD/JudgementCounter/JudgementCounterDisplay.cs b/osu.Game/Screens/Play/HUD/JudgementCounter/JudgementCounterDisplay.cs
index ff58aa7ab58c..822653d4f3ac 100644
--- a/osu.Game/Screens/Play/HUD/JudgementCounter/JudgementCounterDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/JudgementCounter/JudgementCounterDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Localisation.HUD;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD.JudgementCounter
 {
diff --git a/osu.Game/Screens/Play/HUD/KeyCounterKeyboardTrigger.cs b/osu.Game/Screens/Play/HUD/KeyCounterKeyboardTrigger.cs
index 3052c1e66656..630e91c1d4f9 100644
--- a/osu.Game/Screens/Play/HUD/KeyCounterKeyboardTrigger.cs
+++ b/osu.Game/Screens/Play/HUD/KeyCounterKeyboardTrigger.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Input.Events;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/KeyCounterMouseTrigger.cs b/osu.Game/Screens/Play/HUD/KeyCounterMouseTrigger.cs
index 369aaa9f74eb..8374fafc5379 100644
--- a/osu.Game/Screens/Play/HUD/KeyCounterMouseTrigger.cs
+++ b/osu.Game/Screens/Play/HUD/KeyCounterMouseTrigger.cs
@@ -2,8 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Input.Events;
-using osuTK;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -17,7 +16,7 @@ public KeyCounterMouseTrigger(MouseButton button)
             Button = button;
         }
 
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
+        public override bool ReceivePositionalInputAt(System.Numerics.Vector2 screenSpacePos) => true;
 
         private static string getStringRepresentation(MouseButton button)
         {
diff --git a/osu.Game/Screens/Play/HUD/LongestComboCounter.cs b/osu.Game/Screens/Play/HUD/LongestComboCounter.cs
index fdc3768aab16..99d9a18f0963 100644
--- a/osu.Game/Screens/Play/HUD/LongestComboCounter.cs
+++ b/osu.Game/Screens/Play/HUD/LongestComboCounter.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/MatchScoreDisplay.cs b/osu.Game/Screens/Play/HUD/MatchScoreDisplay.cs
index 4a61c7fd1b3a..37e9f46011f0 100644
--- a/osu.Game/Screens/Play/HUD/MatchScoreDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/MatchScoreDisplay.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/ModDisplay.cs b/osu.Game/Screens/Play/HUD/ModDisplay.cs
index a98d1ae79337..8f2c40625950 100644
--- a/osu.Game/Screens/Play/HUD/ModDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/ModDisplay.cs
@@ -13,7 +13,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/ModFlowDisplay.cs b/osu.Game/Screens/Play/HUD/ModFlowDisplay.cs
index 7d9d1655eb7c..31e3d880651f 100644
--- a/osu.Game/Screens/Play/HUD/ModFlowDisplay.cs
+++ b/osu.Game/Screens/Play/HUD/ModFlowDisplay.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/PlayerAvatar.cs b/osu.Game/Screens/Play/HUD/PlayerAvatar.cs
index 8e4406c2c173..6a4d9059ff2b 100644
--- a/osu.Game/Screens/Play/HUD/PlayerAvatar.cs
+++ b/osu.Game/Screens/Play/HUD/PlayerAvatar.cs
@@ -12,7 +12,7 @@
 using osu.Game.Overlays.Settings;
 using osu.Game.Skinning;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/PlayerFlag.cs b/osu.Game/Screens/Play/HUD/PlayerFlag.cs
index c7e247d26a3f..227dd0bc8c72 100644
--- a/osu.Game/Screens/Play/HUD/PlayerFlag.cs
+++ b/osu.Game/Screens/Play/HUD/PlayerFlag.cs
@@ -9,7 +9,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Skinning;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/PlayerTeamFlag.cs b/osu.Game/Screens/Play/HUD/PlayerTeamFlag.cs
index 3f72099a457e..2b609c807da6 100644
--- a/osu.Game/Screens/Play/HUD/PlayerTeamFlag.cs
+++ b/osu.Game/Screens/Play/HUD/PlayerTeamFlag.cs
@@ -11,7 +11,7 @@
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Skinning;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/ReplaySettingsOverlay.cs b/osu.Game/Screens/Play/HUD/ReplaySettingsOverlay.cs
index 272bd599c7d8..d90de0d9b8ef 100644
--- a/osu.Game/Screens/Play/HUD/ReplaySettingsOverlay.cs
+++ b/osu.Game/Screens/Play/HUD/ReplaySettingsOverlay.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -14,8 +13,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Play.PlayerSettings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -80,7 +78,7 @@ public ReplaySettingsOverlay()
             {
                 new Box
                 {
-                    Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0), Color4.Black.Opacity(0.8f)),
+                    Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0), Colour4.Black.Opacity(0.8f)),
                     Depth = float.MaxValue,
                     RelativeSizeAxes = Axes.Both,
                 },
diff --git a/osu.Game/Screens/Play/HUD/SongProgressBar.cs b/osu.Game/Screens/Play/HUD/SongProgressBar.cs
index 40c4e587b92d..8484a0986463 100644
--- a/osu.Game/Screens/Play/HUD/SongProgressBar.cs
+++ b/osu.Game/Screens/Play/HUD/SongProgressBar.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
 using osu.Framework.Threading;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
diff --git a/osu.Game/Screens/Play/HUD/SpectatorList.cs b/osu.Game/Screens/Play/HUD/SpectatorList.cs
index 6e21536e553b..dc59299087e3 100644
--- a/osu.Game/Screens/Play/HUD/SpectatorList.cs
+++ b/osu.Game/Screens/Play/HUD/SpectatorList.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -19,8 +18,7 @@
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Spectator;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.HUD
 {
@@ -203,8 +201,8 @@ private void onSpectatorsChanged(object? sender, NotifyCollectionChangedEventArg
             for (int i = 0; i < spectatorsFlow.Count; i++)
             {
                 spectatorsFlow[i].Colour = i < max_spectators_displayed - 1
-                    ? Color4.White
-                    : ColourInfo.GradientVertical(Color4.White, Color4.White.Opacity(0));
+                    ? Colour4.White
+                    : ColourInfo.GradientVertical(Colour4.White, Colour4.White.Opacity(0));
             }
         }
 
diff --git a/osu.Game/Screens/Play/HUDOverlay.cs b/osu.Game/Screens/Play/HUDOverlay.cs
index 7da996c20897..19826cc8d4e1 100644
--- a/osu.Game/Screens/Play/HUDOverlay.cs
+++ b/osu.Game/Screens/Play/HUDOverlay.cs
@@ -27,7 +27,7 @@
 using osu.Game.Screens.Play.HUD.ClicksPerSecond;
 using osu.Game.Screens.Play.HUD.JudgementCounter;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -252,8 +252,8 @@ protected override void Update()
                 Quad playfieldScreenSpaceDrawQuad = drawableRuleset.Playfield.SkinnableComponentScreenSpaceDrawQuad;
 
                 PlayfieldSkinLayer.Position = ToLocalSpace(playfieldScreenSpaceDrawQuad.TopLeft);
-                PlayfieldSkinLayer.Width = (ToLocalSpace(playfieldScreenSpaceDrawQuad.TopRight) - ToLocalSpace(playfieldScreenSpaceDrawQuad.TopLeft)).Length;
-                PlayfieldSkinLayer.Height = (ToLocalSpace(playfieldScreenSpaceDrawQuad.BottomLeft) - ToLocalSpace(playfieldScreenSpaceDrawQuad.TopLeft)).Length;
+                PlayfieldSkinLayer.Width = (ToLocalSpace(playfieldScreenSpaceDrawQuad.TopRight) - ToLocalSpace(playfieldScreenSpaceDrawQuad.TopLeft)).Length();
+                PlayfieldSkinLayer.Height = (ToLocalSpace(playfieldScreenSpaceDrawQuad.BottomLeft) - ToLocalSpace(playfieldScreenSpaceDrawQuad.TopLeft)).Length();
                 PlayfieldSkinLayer.Rotation = drawableRuleset.PlayfieldAdjustmentContainer.Rotation;
             }
 
diff --git a/osu.Game/Screens/Play/Leaderboards/MultiplayerLeaderboardProvider.cs b/osu.Game/Screens/Play/Leaderboards/MultiplayerLeaderboardProvider.cs
index 4d3485ba2168..56646b6bc346 100644
--- a/osu.Game/Screens/Play/Leaderboards/MultiplayerLeaderboardProvider.cs
+++ b/osu.Game/Screens/Play/Leaderboards/MultiplayerLeaderboardProvider.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Configuration;
@@ -22,7 +21,7 @@
 using osu.Game.Online.Multiplayer.MatchTypes.TeamVersus;
 using osu.Game.Online.Spectator;
 using osu.Game.Rulesets.Scoring;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Screens.Play.Leaderboards
 {
@@ -167,7 +166,7 @@ private void updateTotals()
             }
         }
 
-        private Color4 getTeamColour(int team)
+        private Colour4 getTeamColour(int team)
         {
             switch (team)
             {
diff --git a/osu.Game/Screens/Play/LetterboxOverlay.cs b/osu.Game/Screens/Play/LetterboxOverlay.cs
index f5c762ccf2cc..7ea70f802a16 100644
--- a/osu.Game/Screens/Play/LetterboxOverlay.cs
+++ b/osu.Game/Screens/Play/LetterboxOverlay.cs
@@ -6,7 +6,6 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Utils;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Play
 {
@@ -35,7 +34,7 @@ public LetterboxOverlay()
                         Origin = Anchor.TopLeft,
                         RelativeSizeAxes = Axes.Both,
                         Height = letterbox_height,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     },
                     new Box
                     {
@@ -43,7 +42,7 @@ public LetterboxOverlay()
                         Origin = Anchor.BottomLeft,
                         RelativeSizeAxes = Axes.Both,
                         Height = letterbox_height,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     }
                 }
             };
diff --git a/osu.Game/Screens/Play/Player.cs b/osu.Game/Screens/Play/Player.cs
index ae3a26d9fda9..ca87cd6d4b1d 100644
--- a/osu.Game/Screens/Play/Player.cs
+++ b/osu.Game/Screens/Play/Player.cs
@@ -36,9 +36,9 @@
 using osu.Game.Scoring.Legacy;
 using osu.Game.Screens.Ranking;
 using osu.Game.Skinning;
+using osu.Game.Storyboards;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Play
 {
@@ -284,7 +284,14 @@ private void load(OsuConfigManager config, OsuGameBase game, CancellationToken c
             Score.ScoreInfo.Ruleset = ruleset.RulesetInfo;
             Score.ScoreInfo.Mods = gameplayMods;
 
-            dependencies.CacheAs(GameplayState = new GameplayState(playableBeatmap, ruleset, gameplayMods, Score, ScoreProcessor, HealthProcessor, Beatmap.Value.Storyboard, PlayingState));
+            // Avoid triggering the lazy storyboard parse (file I/O + CPU) when the user has disabled
+            // storyboards. DimmableStoryboard already skips creating the DrawableStoryboard in this
+            // case, so passing an empty Storyboard here means no parse work is done at all.
+            // If the storyboard was already parsed (e.g. by the song-select background when
+            // BackgroundSource.BeatmapWithStoryboard is selected), the lazy is cached and this read
+            // is a no-op anyway — so there is no cost to the check.
+            var storyboard = config.Get<bool>(OsuSetting.ShowStoryboard) ? Beatmap.Value.Storyboard : new Storyboard();
+            dependencies.CacheAs(GameplayState = new GameplayState(playableBeatmap, ruleset, gameplayMods, Score, ScoreProcessor, HealthProcessor, storyboard, PlayingState));
 
             var rulesetSkinProvider = new RulesetSkinProvidingContainer(ruleset, playableBeatmap, Beatmap.Value.Skin);
             config.BindWith(OsuSetting.BeatmapSkins, rulesetSkinProvider.BeatmapSkins);
@@ -589,8 +596,9 @@ private IBeatmap loadPlayableBeatmap(Mod[] gameplayMods, CancellationToken cance
                 if (Beatmap.Value.Beatmap == null)
                     throw new InvalidOperationException("Beatmap was not loaded");
 
-                var rulesetInfo = Ruleset.Value ?? Beatmap.Value.BeatmapInfo.Ruleset;
+                var rulesetInfo = Ruleset.Value;
                 ruleset = rulesetInfo.CreateInstance() ?? throw new RulesetLoadException("Instantiation failure");
+
                 try
                 {
                     playable = Beatmap.Value.GetPlayableBeatmap(ruleset.RulesetInfo, gameplayMods, cancellationToken);
@@ -1124,7 +1132,7 @@ public override void OnEntering(ScreenTransitionEvent e)
             {
                 b.IgnoreUserSettings.Value = false;
                 b.BlurAmount.Value = 0;
-                b.FadeColour(Color4.White, 250);
+                b.FadeColour(Colour4.White, 250);
 
                 // bind component bindables.
                 ((IBindable<bool>)b.IsBreakTime).BindTo(breakTracker.IsBreakTime);
diff --git a/osu.Game/Screens/Play/PlayerLoader.cs b/osu.Game/Screens/Play/PlayerLoader.cs
index c31f21f147af..d2ed92c4aefd 100644
--- a/osu.Game/Screens/Play/PlayerLoader.cs
+++ b/osu.Game/Screens/Play/PlayerLoader.cs
@@ -40,8 +40,7 @@
 using osu.Game.Skinning;
 using osu.Game.Users;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -96,8 +95,6 @@ public partial class PlayerLoader : ScreenWithBeatmapBackground
 
         private Bindable<bool> showStoryboards = null!;
 
-        private bool backgroundBrightnessReduction;
-
         private readonly BindableDouble volumeAdjustment = new BindableDouble(1);
 
         private AudioFilter? lowPassFilter;
@@ -121,12 +118,12 @@ protected bool BackgroundBrightnessReduction
         {
             set
             {
-                if (value == backgroundBrightnessReduction)
+                if (value == field)
                     return;
 
-                backgroundBrightnessReduction = value;
+                field = value;
 
-                ApplyToBackground(b => b.FadeColour(OsuColour.Gray(backgroundBrightnessReduction ? 0.8f : 1), 200));
+                ApplyToBackground(b => b.FadeColour(OsuColour.Gray(field ? 0.8f : 1), 200));
             }
         }
 
@@ -575,7 +572,7 @@ private void contentIn(double delayBeforeSideDisplays = 0)
                 // A quick restart starts by triggering a fade to black
                 AddInternal(quickRestartBlackLayer = new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both,
                     Depth = float.MaxValue
                 });
@@ -623,7 +620,7 @@ private void contentIn(double delayBeforeSideDisplays = 0)
             lowPassFilter.CutoffTo(1000, 650, Easing.OutQuint);
             highPassFilter.CutoffTo(300).Then().CutoffTo(0, 1250); // 1250 is to line up with the appearance of MetadataInfo (750 delay + 500 fade-in)
 
-            ApplyToBackground(b => b.FadeColour(Color4.White, 800, Easing.OutQuint));
+            ApplyToBackground(b => b.FadeColour(Colour4.White, 800, Easing.OutQuint));
         }
 
         protected virtual void ContentOut()
diff --git a/osu.Game/Screens/Play/PlayerLoaderDisclaimer.cs b/osu.Game/Screens/Play/PlayerLoaderDisclaimer.cs
index 592af166ba16..82c961c0296f 100644
--- a/osu.Game/Screens/Play/PlayerLoaderDisclaimer.cs
+++ b/osu.Game/Screens/Play/PlayerLoaderDisclaimer.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs b/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs
index 3fc008cfa0e6..323f57aacf15 100644
--- a/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs
+++ b/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs
@@ -30,7 +30,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking.Statistics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.PlayerSettings
 {
diff --git a/osu.Game/Screens/Play/PlayerSettings/PlaybackSettings.cs b/osu.Game/Screens/Play/PlayerSettings/PlaybackSettings.cs
index be84d498fafe..7ba7ce925e1e 100644
--- a/osu.Game/Screens/Play/PlayerSettings/PlaybackSettings.cs
+++ b/osu.Game/Screens/Play/PlayerSettings/PlaybackSettings.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Screens.Edit.Timing;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.PlayerSettings
 {
diff --git a/osu.Game/Screens/Play/PlayerSettings/PlayerSliderBar.cs b/osu.Game/Screens/Play/PlayerSettings/PlayerSliderBar.cs
index 1fc1155c0b38..528e0598a1db 100644
--- a/osu.Game/Screens/Play/PlayerSettings/PlayerSliderBar.cs
+++ b/osu.Game/Screens/Play/PlayerSettings/PlayerSliderBar.cs
@@ -1,12 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Numerics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Settings;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play.PlayerSettings
 {
diff --git a/osu.Game/Screens/Play/ReplayFailIndicator.cs b/osu.Game/Screens/Play/ReplayFailIndicator.cs
index 0ab1e2632d2e..0c4356db74a5 100644
--- a/osu.Game/Screens/Play/ReplayFailIndicator.cs
+++ b/osu.Game/Screens/Play/ReplayFailIndicator.cs
@@ -20,7 +20,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/ResumeOverlay.cs b/osu.Game/Screens/Play/ResumeOverlay.cs
index a33dd7988859..5e03238ffa43 100644
--- a/osu.Game/Screens/Play/ResumeOverlay.cs
+++ b/osu.Game/Screens/Play/ResumeOverlay.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.UI;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -64,7 +63,7 @@ private void load(OsuColour colours)
                     Anchor = Anchor.TopCentre,
                     Colour = colours.Yellow,
                     Shadow = true,
-                    ShadowColour = new Color4(0, 0, 0, 0.25f)
+                    ShadowColour = new Colour4(0, 0, 0, 0.25f)
                 }
             });
         }
diff --git a/osu.Game/Screens/Play/SaveFailedScoreButton.cs b/osu.Game/Screens/Play/SaveFailedScoreButton.cs
index 61db282cdfc5..8d6319df1097 100644
--- a/osu.Game/Screens/Play/SaveFailedScoreButton.cs
+++ b/osu.Game/Screens/Play/SaveFailedScoreButton.cs
@@ -16,7 +16,7 @@
 using osu.Game.Online;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/SkipOverlay.cs b/osu.Game/Screens/Play/SkipOverlay.cs
index a0158baca033..5e2b6025a177 100644
--- a/osu.Game/Screens/Play/SkipOverlay.cs
+++ b/osu.Game/Screens/Play/SkipOverlay.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -25,8 +24,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Input.Bindings;
 using osu.Game.Screens.Ranking;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -310,8 +308,8 @@ private partial class ButtonContainer : VisibilityContainer
 
         private partial class Button : OsuClickableContainer
         {
-            private Color4 colourNormal;
-            private Color4 colourHover;
+            private Colour4 colourNormal;
+            private Colour4 colourHover;
             private Box box;
             private FillFlowContainer flow;
             private Box background;
@@ -337,7 +335,7 @@ private void load(OsuColour colours, AudioManager audio)
                     background = new Box
                     {
                         Alpha = 0.2f,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         RelativeSizeAxes = Axes.Both,
                     },
                     aspect = new AspectContainer
@@ -424,7 +422,7 @@ protected override bool OnClick(ClickEvent e)
 
                 sampleConfirm.Play();
 
-                box.FlashColour(Color4.White, 500, Easing.OutQuint);
+                box.FlashColour(Colour4.White, 500, Easing.OutQuint);
                 aspect.ScaleTo(1.2f, 2000, Easing.OutQuint);
 
                 return base.OnClick(e);
diff --git a/osu.Game/Screens/Play/SoloSpectatorScreen.cs b/osu.Game/Screens/Play/SoloSpectatorScreen.cs
index 39f2cd5f86d2..b5a332863648 100644
--- a/osu.Game/Screens/Play/SoloSpectatorScreen.cs
+++ b/osu.Game/Screens/Play/SoloSpectatorScreen.cs
@@ -26,7 +26,7 @@
 using osu.Game.Screens.OnlinePlay.Match.Components;
 using osu.Game.Screens.Spectate;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
diff --git a/osu.Game/Screens/Play/SquareGraph.cs b/osu.Game/Screens/Play/SquareGraph.cs
index 2064a9011477..987c33b23c03 100644
--- a/osu.Game/Screens/Play/SquareGraph.cs
+++ b/osu.Game/Screens/Play/SquareGraph.cs
@@ -10,14 +10,12 @@
 using JetBrains.Annotations;
 using osu.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Layout;
 using osu.Framework.Threading;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Play
 {
@@ -53,9 +51,9 @@ public int[] Values
             }
         }
 
-        private Color4 fillColour;
+        private Colour4 fillColour;
 
-        public Color4 FillColour
+        public Colour4 FillColour
         {
             get => fillColour;
             set
@@ -178,9 +176,9 @@ private void recalculateValues()
 
         public partial class Column : Container, IStateful<ColumnState>
         {
-            protected readonly Color4 EmptyColour = Color4.White.Opacity(20);
-            public Color4 LitColour = Color4.LightBlue;
-            protected readonly Color4 DimmedColour = Color4.White.Opacity(140);
+            protected readonly Colour4 EmptyColour = Colour4.White.Opacity(20);
+            public Colour4 LitColour = Colour4.LightBlue;
+            protected readonly Colour4 DimmedColour = Colour4.White.Opacity(140);
 
             private float cubeCount => DrawHeight / WIDTH;
             private const float cube_size = 4;
@@ -248,7 +246,7 @@ protected override void LoadComplete()
 
             private void fillActive()
             {
-                Color4 colour = State == ColumnState.Lit ? LitColour : DimmedColour;
+                Colour4 colour = State == ColumnState.Lit ? LitColour : DimmedColour;
 
                 int countFilled = (int)Math.Clamp(Filled * drawableRows.Count, 0, drawableRows.Count);
 
diff --git a/osu.Game/Screens/Ranking/CollectionButton.cs b/osu.Game/Screens/Ranking/CollectionButton.cs
index 973e8090fa9e..6b845f65cb75 100644
--- a/osu.Game/Screens/Ranking/CollectionButton.cs
+++ b/osu.Game/Screens/Ranking/CollectionButton.cs
@@ -17,7 +17,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Screens.Ranking
diff --git a/osu.Game/Screens/Ranking/Contracted/ContractedPanelMiddleContent.cs b/osu.Game/Screens/Ranking/Contracted/ContractedPanelMiddleContent.cs
index fbc0fd8a70d1..ecc42f88ac60 100644
--- a/osu.Game/Screens/Ranking/Contracted/ContractedPanelMiddleContent.cs
+++ b/osu.Game/Screens/Ranking/Contracted/ContractedPanelMiddleContent.cs
@@ -23,8 +23,7 @@
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Contracted
 {
@@ -66,7 +65,7 @@ private void load()
                             CornerRadius = 20,
                             EdgeEffect = new EdgeEffectParameters
                             {
-                                Colour = Color4.Black.Opacity(0.25f),
+                                Colour = Colour4.Black.Opacity(0.25f),
                                 Type = EdgeEffectType.Shadow,
                                 Radius = 1,
                                 Offset = new Vector2(0, 2)
@@ -82,7 +81,7 @@ private void load()
                                 {
                                     RelativeSizeAxes = Axes.Both,
                                     User = score.User,
-                                    Colour = ColourInfo.GradientVertical(Color4.White.Opacity(0.5f), Color4Extensions.FromHex("#444").Opacity(0))
+                                    Colour = ColourInfo.GradientVertical(Colour4.White.Opacity(0.5f), Color4Extensions.FromHex("#444").Opacity(0))
                                 },
                                 new FillFlowContainer
                                 {
@@ -102,7 +101,7 @@ private void load()
                                             CornerRadius = 20,
                                             EdgeEffect = new EdgeEffectParameters
                                             {
-                                                Colour = Color4.Black.Opacity(0.15f),
+                                                Colour = Colour4.Black.Opacity(0.15f),
                                                 Type = EdgeEffectType.Shadow,
                                                 Radius = 8,
                                                 Offset = new Vector2(0, 1),
diff --git a/osu.Game/Screens/Ranking/Expanded/Accuracy/AccuracyCircle.cs b/osu.Game/Screens/Ranking/Expanded/Accuracy/AccuracyCircle.cs
index f6cf71d8a642..3eb6c7937493 100644
--- a/osu.Game/Screens/Ranking/Expanded/Accuracy/AccuracyCircle.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Accuracy/AccuracyCircle.cs
@@ -18,8 +18,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded.Accuracy
 {
@@ -345,7 +344,7 @@ protected override void LoadComplete()
                         using (BeginDelayedSequence(adjust_duration))
                         {
                             failedSRankText
-                                .FadeColour(Color4.Red, 800, Easing.Out)
+                                .FadeColour(Colour4.Red, 800, Easing.Out)
                                 .RotateTo(10, 1000, Easing.Out)
                                 .MoveToY(100, 1000, Easing.In)
                                 .FadeOut(800, Easing.Out);
diff --git a/osu.Game/Screens/Ranking/Expanded/Accuracy/RankBadge.cs b/osu.Game/Screens/Ranking/Expanded/Accuracy/RankBadge.cs
index 0e798c7d6e68..2bca1fd227bd 100644
--- a/osu.Game/Screens/Ranking/Expanded/Accuracy/RankBadge.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Accuracy/RankBadge.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -11,7 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Online.Leaderboards;
 using osu.Game.Scoring;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Ranking.Expanded.Accuracy
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/Accuracy/RankText.cs b/osu.Game/Screens/Ranking/Expanded/Accuracy/RankText.cs
index ce8bd941c268..6078777bc480 100644
--- a/osu.Game/Screens/Ranking/Expanded/Accuracy/RankText.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Accuracy/RankText.cs
@@ -9,8 +9,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online.Leaderboards;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded.Accuracy
 {
@@ -63,7 +62,7 @@ private void load()
                     {
                         new Box
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Size = new Vector2(150),
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
diff --git a/osu.Game/Screens/Ranking/Expanded/ExpandedPanelMiddleContent.cs b/osu.Game/Screens/Ranking/Expanded/ExpandedPanelMiddleContent.cs
index 0f11b01ddec7..56cb9fda4700 100644
--- a/osu.Game/Screens/Ranking/Expanded/ExpandedPanelMiddleContent.cs
+++ b/osu.Game/Screens/Ranking/Expanded/ExpandedPanelMiddleContent.cs
@@ -20,7 +20,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
 using osu.Game.Screens.Ranking.Expanded.Statistics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/ExpandedPanelTopContent.cs b/osu.Game/Screens/Ranking/Expanded/ExpandedPanelTopContent.cs
index b50996154bb5..d3cf0bb6796d 100644
--- a/osu.Game/Screens/Ranking/Expanded/ExpandedPanelTopContent.cs
+++ b/osu.Game/Screens/Ranking/Expanded/ExpandedPanelTopContent.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/Statistics/AccuracyStatistic.cs b/osu.Game/Screens/Ranking/Expanded/Statistics/AccuracyStatistic.cs
index a4672a475c27..f73de2c77249 100644
--- a/osu.Game/Screens/Ranking/Expanded/Statistics/AccuracyStatistic.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Statistics/AccuracyStatistic.cs
@@ -9,7 +9,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded.Statistics
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/Statistics/ComboStatistic.cs b/osu.Game/Screens/Ranking/Expanded/Statistics/ComboStatistic.cs
index 7c91a37b7714..0971494f2db4 100644
--- a/osu.Game/Screens/Ranking/Expanded/Statistics/ComboStatistic.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Statistics/ComboStatistic.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Ranking.Expanded.Statistics
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/Statistics/CounterStatistic.cs b/osu.Game/Screens/Ranking/Expanded/Statistics/CounterStatistic.cs
index 4042724c75f7..74e335110ecf 100644
--- a/osu.Game/Screens/Ranking/Expanded/Statistics/CounterStatistic.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Statistics/CounterStatistic.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded.Statistics
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/Statistics/StatisticCounter.cs b/osu.Game/Screens/Ranking/Expanded/Statistics/StatisticCounter.cs
index b279c8107c64..09a7b63d3787 100644
--- a/osu.Game/Screens/Ranking/Expanded/Statistics/StatisticCounter.cs
+++ b/osu.Game/Screens/Ranking/Expanded/Statistics/StatisticCounter.cs
@@ -6,7 +6,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded.Statistics
 {
diff --git a/osu.Game/Screens/Ranking/Expanded/TotalScoreCounter.cs b/osu.Game/Screens/Ranking/Expanded/TotalScoreCounter.cs
index b017a3a63db4..5027d3b2caec 100644
--- a/osu.Game/Screens/Ranking/Expanded/TotalScoreCounter.cs
+++ b/osu.Game/Screens/Ranking/Expanded/TotalScoreCounter.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Expanded
 {
diff --git a/osu.Game/Screens/Ranking/FavouriteButton.cs b/osu.Game/Screens/Ranking/FavouriteButton.cs
index 7f1c4e82cc45..2ed08e8c9e61 100644
--- a/osu.Game/Screens/Ranking/FavouriteButton.cs
+++ b/osu.Game/Screens/Ranking/FavouriteButton.cs
@@ -13,7 +13,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/ReplayDownloadButton.cs b/osu.Game/Screens/Ranking/ReplayDownloadButton.cs
index 5e2161c251b3..b8b0788e50d3 100644
--- a/osu.Game/Screens/Ranking/ReplayDownloadButton.cs
+++ b/osu.Game/Screens/Ranking/ReplayDownloadButton.cs
@@ -12,7 +12,7 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Online;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/ResultsScreen.cs b/osu.Game/Screens/Ranking/ResultsScreen.cs
index dbf6802f90e4..d3ec42ce79d0 100644
--- a/osu.Game/Screens/Ranking/ResultsScreen.cs
+++ b/osu.Game/Screens/Ranking/ResultsScreen.cs
@@ -32,7 +32,7 @@
 using osu.Game.Screens.Ranking.Expanded.Accuracy;
 using osu.Game.Screens.Ranking.Statistics;
 using osu.Game.Skinning;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/RetryButton.cs b/osu.Game/Screens/Ranking/RetryButton.cs
index 8b4f3ca14cb0..a405390c2338 100644
--- a/osu.Game/Screens/Ranking/RetryButton.cs
+++ b/osu.Game/Screens/Ranking/RetryButton.cs
@@ -8,7 +8,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/ScorePanel.cs b/osu.Game/Screens/Ranking/ScorePanel.cs
index 9807baf14d3c..2b598ff630c8 100644
--- a/osu.Game/Screens/Ranking/ScorePanel.cs
+++ b/osu.Game/Screens/Ranking/ScorePanel.cs
@@ -18,8 +18,7 @@
 using osu.Game.Screens.Ranking.Contracted;
 using osu.Game.Screens.Ranking.Expanded;
 using osu.Game.Users;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
@@ -77,8 +76,8 @@ public partial class ScorePanel : CompositeDrawable, IStateful<PanelState>
 
         private static readonly ColourInfo expanded_top_layer_colour = ColourInfo.GradientVertical(Color4Extensions.FromHex("#444"), Color4Extensions.FromHex("#333"));
         private static readonly ColourInfo expanded_middle_layer_colour = ColourInfo.GradientVertical(Color4Extensions.FromHex("#555"), Color4Extensions.FromHex("#333"));
-        private static readonly Color4 contracted_top_layer_colour = Color4Extensions.FromHex("#353535");
-        private static readonly Color4 contracted_middle_layer_colour = Color4Extensions.FromHex("#353535");
+        private static readonly Colour4 contracted_top_layer_colour = Color4Extensions.FromHex("#353535");
+        private static readonly Colour4 contracted_middle_layer_colour = Color4Extensions.FromHex("#353535");
 
         public event Action<PanelState>? StateChanged;
 
@@ -176,7 +175,7 @@ private void load(AudioManager audio)
                                     {
                                         RelativeSizeAxes = Axes.Both,
                                         User = Score.User,
-                                        Colour = ColourInfo.GradientVertical(Color4.White.Opacity(0.5f), Color4Extensions.FromHex("#444").Opacity(0))
+                                        Colour = ColourInfo.GradientVertical(Colour4.White.Opacity(0.5f), Color4Extensions.FromHex("#444").Opacity(0))
                                     }
                                 }
                             },
diff --git a/osu.Game/Screens/Ranking/ScorePanelList.cs b/osu.Game/Screens/Ranking/ScorePanelList.cs
index a29ee2561f60..44ee21a85cf6 100644
--- a/osu.Game/Screens/Ranking/ScorePanelList.cs
+++ b/osu.Game/Screens/Ranking/ScorePanelList.cs
@@ -12,8 +12,8 @@
 using osu.Framework.Input.Events;
 using osu.Game.Graphics.Containers;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs b/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
index a80aeaa5ddb3..9fe5d819ebee 100644
--- a/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
+++ b/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
@@ -12,7 +12,6 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Scoring;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Ranking.Statistics
 {
@@ -247,7 +246,7 @@ private void load()
                         RelativeSizeAxes = Axes.Both,
                         Anchor = Anchor.BottomCentre,
                         Origin = Anchor.BottomCentre,
-                        Colour = isCentre && i == 0 ? Color4.White : colours.ForHitResult(v.Key),
+                        Colour = isCentre && i == 0 ? Colour4.White : colours.ForHitResult(v.Key),
                         Height = 0,
                     }).ToArray();
                     // The bars of the stacked bar graph will be processed (stacked) from the bottom, which is the base position,
@@ -265,7 +264,7 @@ private void load()
                             RelativeSizeAxes = Axes.Both,
                             Anchor = Anchor.BottomCentre,
                             Origin = Anchor.BottomCentre,
-                            Colour = isCentre ? Color4.White : Color4.Gray,
+                            Colour = isCentre ? Colour4.White : Colour4.Gray,
                             Height = 0,
                         }
                     };
@@ -304,7 +303,7 @@ public void UpdateOffset(float adjustment)
                         RelativeSizeAxes = Axes.Both,
                         Anchor = Anchor.BottomCentre,
                         Origin = Anchor.BottomCentre,
-                        Colour = Color4.Yellow,
+                        Colour = Colour4.Yellow,
                         Blending = BlendingParameters.Additive,
                         Alpha = 0.6f,
                         Height = 0,
diff --git a/osu.Game/Screens/Ranking/Statistics/PerformanceBreakdownChart.cs b/osu.Game/Screens/Ranking/Statistics/PerformanceBreakdownChart.cs
index 50313b2e5f80..80d99bc42b34 100644
--- a/osu.Game/Screens/Ranking/Statistics/PerformanceBreakdownChart.cs
+++ b/osu.Game/Screens/Ranking/Statistics/PerformanceBreakdownChart.cs
@@ -19,7 +19,6 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Scoring;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Ranking.Statistics
 {
@@ -244,7 +243,7 @@ private void setTotalValues(PerformanceDisplayAttribute attribute, PerformanceDi
                         CornerRadius = 2.5f,
                         Masking = true,
                         Height = 5,
-                        BackgroundColour = Color4.White.Opacity(0.5f),
+                        BackgroundColour = Colour4.White.Opacity(0.5f),
                         AccentColour = Color4Extensions.FromHex("#66FFCC"),
                         Length = percentage
                     }
diff --git a/osu.Game/Screens/Ranking/Statistics/StatisticItemContainer.cs b/osu.Game/Screens/Ranking/Statistics/StatisticItemContainer.cs
index 6020e9d10ffa..211a337818db 100644
--- a/osu.Game/Screens/Ranking/Statistics/StatisticItemContainer.cs
+++ b/osu.Game/Screens/Ranking/Statistics/StatisticItemContainer.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
diff --git a/osu.Game/Screens/Ranking/Statistics/StatisticsPanel.cs b/osu.Game/Screens/Ranking/Statistics/StatisticsPanel.cs
index c2d4d4f7db63..13d2c72ae1b8 100644
--- a/osu.Game/Screens/Ranking/Statistics/StatisticsPanel.cs
+++ b/osu.Game/Screens/Ranking/Statistics/StatisticsPanel.cs
@@ -24,7 +24,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Scoring;
 using osu.Game.Screens.Ranking.Statistics.User;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Statistics
 {
diff --git a/osu.Game/Screens/Ranking/Statistics/User/RankingChangeRow.cs b/osu.Game/Screens/Ranking/Statistics/User/RankingChangeRow.cs
index 80f2fbc7a602..adb13c58d3eb 100644
--- a/osu.Game/Screens/Ranking/Statistics/User/RankingChangeRow.cs
+++ b/osu.Game/Screens/Ranking/Statistics/User/RankingChangeRow.cs
@@ -14,7 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Online;
 using osu.Game.Users;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking.Statistics.User
 {
diff --git a/osu.Game/Screens/Ranking/UserTagControl.AddTagsPopover.cs b/osu.Game/Screens/Ranking/UserTagControl.AddTagsPopover.cs
index ed4b46ab6484..287fca7fa155 100644
--- a/osu.Game/Screens/Ranking/UserTagControl.AddTagsPopover.cs
+++ b/osu.Game/Screens/Ranking/UserTagControl.AddTagsPopover.cs
@@ -20,7 +20,7 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
 using osu.Game.Screens.Ranking.Statistics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/Ranking/UserTagControl.cs b/osu.Game/Screens/Ranking/UserTagControl.cs
index 1005e7ea2cc3..efdd4fd99752 100644
--- a/osu.Game/Screens/Ranking/UserTagControl.cs
+++ b/osu.Game/Screens/Ranking/UserTagControl.cs
@@ -22,7 +22,7 @@
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Ranking
 {
diff --git a/osu.Game/Screens/ScreenWhiteBox.cs b/osu.Game/Screens/ScreenWhiteBox.cs
index 06003cd26de4..c8d6c055dc19 100644
--- a/osu.Game/Screens/ScreenWhiteBox.cs
+++ b/osu.Game/Screens/ScreenWhiteBox.cs
@@ -5,7 +5,6 @@
 
 using System;
 using System.Collections.Generic;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Screens.Backgrounds;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens
 {
@@ -86,13 +84,13 @@ public ScreenWhiteBox()
             }
         }
 
-        private static Color4 getColourFor(object type)
+        private static Colour4 getColourFor(object type)
         {
             int hash = type.GetHashCode();
             byte r = (byte)Math.Clamp(((hash & 0xFF0000) >> 16) * 2, 128, 255);
             byte g = (byte)Math.Clamp(((hash & 0x00FF00) >> 8) * 2, 128, 255);
             byte b = (byte)Math.Clamp((hash & 0x0000FF) * 2, 128, 255);
-            return new Color4(r, g, b, 255);
+            return new Colour4(r, g, b, 255);
         }
 
         private partial class ChildModeButton : TwoLayerButton
diff --git a/osu.Game/Screens/Select/BeatmapDetailsArea.Header.cs b/osu.Game/Screens/Select/BeatmapDetailsArea.Header.cs
index b20254a35c9c..188152a89cb9 100644
--- a/osu.Game/Screens/Select/BeatmapDetailsArea.Header.cs
+++ b/osu.Game/Screens/Select/BeatmapDetailsArea.Header.cs
@@ -14,7 +14,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.Leaderboards;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapDetailsArea.WedgeSelector.cs b/osu.Game/Screens/Select/BeatmapDetailsArea.WedgeSelector.cs
index 9a5db9b818ed..fb3d970fbd49 100644
--- a/osu.Game/Screens/Select/BeatmapDetailsArea.WedgeSelector.cs
+++ b/osu.Game/Screens/Select/BeatmapDetailsArea.WedgeSelector.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapLeaderboardScore.Tooltip.cs b/osu.Game/Screens/Select/BeatmapLeaderboardScore.Tooltip.cs
index dbc9164eb5f5..de09712fc4d3 100644
--- a/osu.Game/Screens/Select/BeatmapLeaderboardScore.Tooltip.cs
+++ b/osu.Game/Screens/Select/BeatmapLeaderboardScore.Tooltip.cs
@@ -31,8 +31,7 @@
 using osu.Game.Rulesets.UI;
 using osu.Game.Scoring;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -149,7 +148,7 @@ private void load(OsuConfigManager configManager)
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Radius = 4f,
                     };
 
@@ -233,9 +232,9 @@ public partial class StatisticRow : CompositeDrawable
                 private readonly OsuSpriteText labelText;
                 protected readonly OsuSpriteText ValueText;
 
-                private readonly Color4? colour;
+                private readonly Colour4? colour;
 
-                public StatisticRow(LocalisableString label, LocalisableString value, Color4? colour = null)
+                public StatisticRow(LocalisableString label, LocalisableString value, Colour4? colour = null)
                 {
                     this.colour = colour;
 
@@ -254,7 +253,7 @@ public StatisticRow(LocalisableString label, LocalisableString value, Color4? co
                             Anchor = Anchor.TopRight,
                             Origin = Anchor.TopRight,
                             Text = value,
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             Font = OsuFont.Style.Caption2,
                         },
                     };
@@ -361,7 +360,7 @@ private void load(OverlayColourProvider colourProvider)
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Radius = 4f,
                     };
 
@@ -375,7 +374,7 @@ private void load(OverlayColourProvider colourProvider)
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Transparent,
+                            Colour = Colour4.Transparent,
                         },
                         modsFlow = new FillFlowContainer
                         {
@@ -421,7 +420,7 @@ private void load()
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Radius = 4f,
                     };
 
diff --git a/osu.Game/Screens/Select/BeatmapLeaderboardScore.cs b/osu.Game/Screens/Select/BeatmapLeaderboardScore.cs
index 0cf4650e4516..babece1ad498 100644
--- a/osu.Game/Screens/Select/BeatmapLeaderboardScore.cs
+++ b/osu.Game/Screens/Select/BeatmapLeaderboardScore.cs
@@ -35,8 +35,7 @@
 using osu.Game.Users;
 using osu.Game.Users.Drawables;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using CommonStrings = osu.Game.Localisation.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -91,8 +90,8 @@ public sealed partial class BeatmapLeaderboardScore : OsuClickableContainer, IHa
         private const int corner_radius = 10;
         private const int transition_duration = 200;
 
-        private static readonly Color4 personal_best_gradient_left = Color4Extensions.FromHex("#66FFCC");
-        private static readonly Color4 personal_best_gradient_right = Color4Extensions.FromHex("#51A388");
+        private static readonly Colour4 personal_best_gradient_left = Color4Extensions.FromHex("#66FFCC");
+        private static readonly Colour4 personal_best_gradient_right = Color4Extensions.FromHex("#51A388");
 
         private Colour4 foregroundColour;
         private Colour4 backgroundColour;
@@ -394,7 +393,7 @@ private void load()
                                         Colour = DrawableRank.GetRankLetterColour(Score.Rank),
                                         Font = OsuFont.Numeric.With(size: 14),
                                         Text = DrawableRank.GetRankLetter(Score.Rank),
-                                        ShadowColour = Color4.Black.Opacity(0.3f),
+                                        ShadowColour = Colour4.Black.Opacity(0.3f),
                                         ShadowOffset = new Vector2(0, 0.08f),
                                         Shadow = true,
                                         UseFullGlyphHeight = false,
@@ -710,7 +709,7 @@ private void load(OsuColour colours, OverlayColourProvider colourProvider)
                             BypassAutoSizeAxes = Axes.X,
                             Text = value,
                             Font = OsuFont.Style.Body,
-                            Colour = perfect ? colours.Lime1 : Color4.White,
+                            Colour = perfect ? colours.Lime1 : Colour4.White,
                         },
                         Empty().With(d => d.Width = minWidth),
                     }
diff --git a/osu.Game/Screens/Select/BeatmapLeaderboardWedge.cs b/osu.Game/Screens/Select/BeatmapLeaderboardWedge.cs
index 104eb44a5dc1..86196d793b3e 100644
--- a/osu.Game/Screens/Select/BeatmapLeaderboardWedge.cs
+++ b/osu.Game/Screens/Select/BeatmapLeaderboardWedge.cs
@@ -10,7 +10,6 @@
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.PolygonExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -34,8 +33,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Scoring;
 using osu.Game.Screens.Play.Leaderboards;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -475,29 +473,29 @@ protected override void UpdateAfterChildren()
 
                 if (!requireBottomFade && !requireTopFade)
                 {
-                    c.Colour = Color4.White;
+                    c.Colour = Colour4.White;
                     continue;
                 }
 
                 if (topY > fadeBottom + height || bottomY < fadeTop - height)
                 {
-                    c.Colour = Color4.Transparent;
+                    c.Colour = Colour4.Transparent;
                     continue;
                 }
 
                 if (requireBottomFade)
                 {
                     c.Colour = ColourInfo.GradientVertical(
-                        Color4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / height, 1)),
-                        Color4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / height, 1)));
+                        Colour4.White.Opacity(Math.Min(1 - (topY - fadeBottom) / height, 1)),
+                        Colour4.White.Opacity(Math.Min(1 - (bottomY - fadeBottom) / height, 1)));
                 }
                 else
                 {
                     Debug.Assert(requireTopFade);
 
                     c.Colour = ColourInfo.GradientVertical(
-                        Color4.White.Opacity(Math.Min(1 - (fadeTop - topY) / height, 1)),
-                        Color4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / height, 1)));
+                        Colour4.White.Opacity(Math.Min(1 - (fadeTop - topY) / height, 1)),
+                        Colour4.White.Opacity(Math.Min(1 - (fadeTop - bottomY) / height, 1)));
                 }
             }
         }
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.FailRetryDisplay.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.FailRetryDisplay.cs
index 95363c3330fb..d6fa7772c6bc 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.FailRetryDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.FailRetryDisplay.cs
@@ -15,7 +15,8 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
+using Vector4 = System.Numerics.Vector4;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.MetadataDisplay.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.MetadataDisplay.cs
index 5a64fbf34198..ff28d71c70dd 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.MetadataDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.MetadataDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.RatingSpreadDisplay.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.RatingSpreadDisplay.cs
index a74ab3d8b6b7..3420f6be9861 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.RatingSpreadDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.RatingSpreadDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.SuccessRateDisplay.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.SuccessRateDisplay.cs
index a7038ef9cbb4..7c1afd0b36c1 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.SuccessRateDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.SuccessRateDisplay.cs
@@ -13,7 +13,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.TagsLine.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.TagsLine.cs
index 62fff5ecba69..e04395569eaa 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.TagsLine.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.TagsLine.cs
@@ -20,7 +20,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.UserRatingDisplay.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.UserRatingDisplay.cs
index 8c55e5320c5b..63a0275b5637 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.UserRatingDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.UserRatingDisplay.cs
@@ -11,7 +11,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapMetadataWedge.cs b/osu.Game/Screens/Select/BeatmapMetadataWedge.cs
index 95aff9ca6382..25451c4933d3 100644
--- a/osu.Game/Screens/Select/BeatmapMetadataWedge.cs
+++ b/osu.Game/Screens/Select/BeatmapMetadataWedge.cs
@@ -19,7 +19,7 @@
 using osu.Game.Online.API;
 using osu.Game.Online.Chat;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyDisplay.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyDisplay.cs
index f6952c76d310..702e32649f2d 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyDisplay.cs
@@ -8,7 +8,6 @@
 using System.Threading.Tasks;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -24,7 +23,6 @@
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Select
 {
@@ -62,7 +60,7 @@ public partial class DifficultyDisplay : CompositeDrawable
             private CancellationTokenSource? cancellationSource;
 
             private float lastDifficultyTextMaxWidth = float.NaN;
-            private Color4 lastAccentColour;
+            private Colour4 lastAccentColour;
 
             public DifficultyDisplay()
             {
@@ -315,7 +313,7 @@ protected override void Update()
                 }
 
                 // Use difficulty colour until it gets too dark to be visible against dark backgrounds.
-                Color4 col = starRatingDisplay.DisplayedStars.Value >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF ? starRatingDisplay.DisplayedDifficultyTextColour : starRatingDisplay.DisplayedDifficultyColour;
+                Colour4 col = starRatingDisplay.DisplayedStars.Value >= OsuColour.STAR_DIFFICULTY_DEFINED_COLOUR_CUTOFF ? starRatingDisplay.DisplayedDifficultyTextColour : starRatingDisplay.DisplayedDifficultyColour;
 
                 if (col != lastAccentColour)
                 {
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyStatisticsDisplay.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyStatisticsDisplay.cs
index 68aeae8c613f..027f96748eba 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyStatisticsDisplay.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.DifficultyStatisticsDisplay.cs
@@ -14,8 +14,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -42,9 +41,9 @@ public IReadOnlyList<StatisticDifficulty.Data> Statistics
                 }
             } = [];
 
-            private Color4 accentColour;
+            private Colour4 accentColour;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => accentColour;
                 set
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.FavouriteButton.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.FavouriteButton.cs
index bd3aaaa2396b..ecf09cdd2697 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.FavouriteButton.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.FavouriteButton.cs
@@ -5,7 +5,6 @@
 using System.Diagnostics;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -23,8 +22,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Resources.Localisation.Web;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -74,7 +72,7 @@ private void load()
                     background = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black.Opacity(0.2f),
+                        Colour = Colour4.Black.Opacity(0.2f),
                     },
                     new FillFlowContainer
                     {
@@ -209,7 +207,7 @@ private void updateFavouriteState(bool withAnimation = false)
 
                 isFavourite.Value = onlineBeatmapSet?.HasFavourited == true;
 
-                background.FadeColour(isFavourite.Value ? colours.Pink4.Darken(1f).Opacity(0.5f) : Color4.Black.Opacity(0.2f), 500, Easing.OutQuint);
+                background.FadeColour(isFavourite.Value ? colours.Pink4.Darken(1f).Opacity(0.5f) : Colour4.Black.Opacity(0.2f), 500, Easing.OutQuint);
                 valueText.FadeColour(isFavourite.Value ? colours.Pink1 : colourProvider.Content2, 500, Easing.OutQuint);
                 icon.SetActive(isFavourite.Value, withAnimation);
             }
@@ -304,7 +302,7 @@ public void SetActive(bool active, bool withAnimation = false)
                 }
             }
 
-            private void transitionIcon(IconUsage newIcon, Color4 colour, bool emphasised = false)
+            private void transitionIcon(IconUsage newIcon, Colour4 colour, bool emphasised = false)
             {
                 icon.ScaleTo(emphasised ? 0.5f : 0.8f, pop_out_duration, Easing.OutQuad)
                     .Then()
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.Statistic.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.Statistic.cs
index c7f88de7434e..97ad76aa95c1 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.Statistic.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.Statistic.cs
@@ -12,8 +12,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -63,7 +62,7 @@ private void load(OverlayColourProvider colourProvider)
                     new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                         Alpha = background ? 0.2f : 0f,
                     },
                     new FillFlowContainer
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticDifficulty.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticDifficulty.cs
index 20280075a1ef..3ddb37077a94 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticDifficulty.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticDifficulty.cs
@@ -16,8 +16,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Difficulty;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -46,7 +45,7 @@ public Data Value
             private readonly SpriteIcon valueIcon;
             private readonly Container bars;
 
-            public Color4 AccentColour
+            public Colour4 AccentColour
             {
                 get => bar.Colour;
                 set => bar.Colour = value;
@@ -76,7 +75,7 @@ public StatisticDifficulty()
                                 {
                                     RelativeSizeAxes = Axes.X,
                                     Height = 2f,
-                                    Colour = Color4.Black,
+                                    Colour = Colour4.Black,
                                     Masking = true,
                                     CornerRadius = 1f,
                                     Depth = float.MaxValue,
@@ -157,10 +156,10 @@ private void updateDisplay()
 
                 if (Value.Value == Value.AdjustedValue)
                 {
-                    adjustedBar.FadeColour(Color4.Transparent, 300, Easing.OutQuint);
+                    adjustedBar.FadeColour(Colour4.Transparent, 300, Easing.OutQuint);
                     bar.FadeIn(300, Easing.OutQuint);
 
-                    valueText.FadeColour(Color4.White, 300, Easing.OutQuint);
+                    valueText.FadeColour(Colour4.White, 300, Easing.OutQuint);
                     valueIcon.Hide();
                 }
                 else
@@ -171,7 +170,7 @@ private void updateDisplay()
                     {
                         bars.ChangeChildDepth(adjustedBar, 1);
                         bar.FadeIn(300, Easing.OutQuint);
-                        adjustedBar.FadeColour(ColourInfo.GradientHorizontal(Color4.Black, colours.Red1), 300, Easing.OutQuint);
+                        adjustedBar.FadeColour(ColourInfo.GradientHorizontal(Colour4.Black, colours.Red1), 300, Easing.OutQuint);
 
                         valueText.FadeColour(colours.Red1, 300, Easing.OutQuint);
                         valueIcon.Show();
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticPlayCount.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticPlayCount.cs
index f8f5fe378231..7e8209383926 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticPlayCount.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.StatisticPlayCount.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -15,8 +14,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -74,7 +72,7 @@ private void load()
                     EdgeEffect = new EdgeEffectParameters
                     {
                         Type = EdgeEffectType.Shadow,
-                        Colour = Color4.Black.Opacity(0.25f),
+                        Colour = Colour4.Black.Opacity(0.25f),
                         Radius = 10f,
                     };
 
diff --git a/osu.Game/Screens/Select/BeatmapTitleWedge.cs b/osu.Game/Screens/Select/BeatmapTitleWedge.cs
index 5a4154e0b8bb..3fdbbe42287b 100644
--- a/osu.Game/Screens/Select/BeatmapTitleWedge.cs
+++ b/osu.Game/Screens/Select/BeatmapTitleWedge.cs
@@ -26,7 +26,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/CollectionDropdown.cs b/osu.Game/Screens/Select/CollectionDropdown.cs
index 5865373a9c1d..2dec90e606fe 100644
--- a/osu.Game/Screens/Select/CollectionDropdown.cs
+++ b/osu.Game/Screens/Select/CollectionDropdown.cs
@@ -20,7 +20,7 @@
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
-using osuTK;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Screens.Select
diff --git a/osu.Game/Screens/Select/FilterControl.DifficultyRangeSlider.cs b/osu.Game/Screens/Select/FilterControl.DifficultyRangeSlider.cs
index 718e55df1320..6af459a1f120 100644
--- a/osu.Game/Screens/Select/FilterControl.DifficultyRangeSlider.cs
+++ b/osu.Game/Screens/Select/FilterControl.DifficultyRangeSlider.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -19,7 +18,6 @@
 using osu.Game.Overlays;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Utils;
-using osuTK.Graphics;
 
 namespace osu.Game.Screens.Select
 {
@@ -31,9 +29,9 @@ public partial class DifficultyRangeSlider : ShearedRangeSlider
 
             private readonly LayoutValue drawSizeLayout = new LayoutValue(Invalidation.DrawSize);
 
-            private static readonly (float, Color4)[] spectrum = OsuColour.STAR_DIFFICULTY_SPECTRUM
-                                                                          .Skip(1)
-                                                                          .Prepend((0.0f, OsuColour.STAR_DIFFICULTY_SPECTRUM.ElementAt(1).Item2)).ToArray();
+            private static readonly (float, Colour4)[] spectrum = OsuColour.STAR_DIFFICULTY_SPECTRUM
+                                                               .Skip(1)
+                                                               .Prepend((0.0f, OsuColour.STAR_DIFFICULTY_SPECTRUM.ElementAt(1).Item2)).ToArray();
 
             public DifficultyRangeSlider()
                 : base(BeatmapsetsStrings.ShowStatsStars)
@@ -81,7 +79,7 @@ private void load(OverlayColourProvider colourProvider)
                             CornerRadius = 5f,
                             Child = new Box
                             {
-                                Colour = Color4.Transparent,
+                                Colour = Colour4.Transparent,
                                 RelativeSizeAxes = Axes.Both,
                             }
                         },
@@ -174,7 +172,7 @@ protected override void UpdateDisplay(double value)
 
                     Nub.AccentColour = nubColour;
                     Nub.GlowingAccentColour = nubColour.Lighten(0.1f);
-                    Nub.ShadowColour = Color4.Black.Opacity(0.2f);
+                    Nub.ShadowColour = Colour4.Black.Opacity(0.2f);
                     NubText.Colour = colours.ForStarDifficultyText(value);
                     // Except for infinity, which should be white
                     if (Current.IsDefault && isUpper)
diff --git a/osu.Game/Screens/Select/FilterControl.cs b/osu.Game/Screens/Select/FilterControl.cs
index c8c43436371e..eba86d20f57f 100644
--- a/osu.Game/Screens/Select/FilterControl.cs
+++ b/osu.Game/Screens/Select/FilterControl.cs
@@ -27,8 +27,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Select.Filter;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/FooterButtonMods.cs b/osu.Game/Screens/Select/FooterButtonMods.cs
index 4434546a917c..f37ce2afce72 100644
--- a/osu.Game/Screens/Select/FooterButtonMods.cs
+++ b/osu.Game/Screens/Select/FooterButtonMods.cs
@@ -26,9 +26,8 @@
 using osu.Game.Screens.Footer;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Select
 {
@@ -242,7 +241,7 @@ private void updateDisplay()
             else if (multiplier < 1)
                 multiplierText.FadeColour(colours.Lime1, duration, easing);
             else
-                multiplierText.FadeColour(Color4.White, duration, easing);
+                multiplierText.FadeColour(Colour4.White, duration, easing);
         }
 
         protected override void Update()
@@ -385,7 +384,7 @@ public UnrankedBadge()
                 AutoSizeAxes = Axes.X;
                 Height = BAR_HEIGHT;
                 Masking = true;
-                BorderColour = Color4.White;
+                BorderColour = Colour4.White;
                 BorderThickness = 2f;
                 TooltipText = ModSelectOverlayStrings.UnrankedExplanation;
             }
@@ -409,7 +408,7 @@ private void load(OsuColour colours)
                         Margin = new MarginPadding { Horizontal = 15 },
                         UseFullGlyphHeight = false,
                         Font = OsuFont.Torus.With(size: 14f, weight: FontWeight.Bold),
-                        Colour = Color4.Black,
+                        Colour = Colour4.Black,
                     }
                 };
             }
diff --git a/osu.Game/Screens/Select/FooterButtonOptions.Popover.cs b/osu.Game/Screens/Select/FooterButtonOptions.Popover.cs
index d4b7a13d9c20..db96e54dbae2 100644
--- a/osu.Game/Screens/Select/FooterButtonOptions.Popover.cs
+++ b/osu.Game/Screens/Select/FooterButtonOptions.Popover.cs
@@ -19,9 +19,8 @@
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Select
 {
@@ -125,7 +124,7 @@ private void addHeader(LocalisableString text, string? context = null)
                 buttonFlow.Add(textFlow);
             }
 
-            private void addButton(LocalisableString text, IconUsage? icon, Action? action, Color4? colour = null)
+            private void addButton(LocalisableString text, IconUsage? icon, Action? action, Colour4? colour = null)
             {
                 var button = new OptionButton
                 {
@@ -167,7 +166,7 @@ protected override bool OnKeyDown(KeyDownEvent e)
             private partial class OptionButton : OsuButton
             {
                 public IconUsage Icon { get; init; }
-                public Color4? TextColour { get; init; }
+                public Colour4? TextColour { get; init; }
 
                 public OptionButton()
                 {
@@ -177,7 +176,7 @@ public OptionButton()
                 [BackgroundDependencyLoader]
                 private void load()
                 {
-                    SpriteText.Colour = TextColour ?? Color4.White;
+                    SpriteText.Colour = TextColour ?? Colour4.White;
                     Content.CornerRadius = 10;
 
                     Add(new SpriteIcon
@@ -187,7 +186,7 @@ private void load()
                         Size = new Vector2(17),
                         X = 15,
                         Icon = Icon,
-                        Colour = TextColour ?? Color4.White,
+                        Colour = TextColour ?? Colour4.White,
                     });
                 }
 
diff --git a/osu.Game/Screens/Select/FooterButtonRandom.cs b/osu.Game/Screens/Select/FooterButtonRandom.cs
index bf001b7b8f11..83ef9ec8fce0 100644
--- a/osu.Game/Screens/Select/FooterButtonRandom.cs
+++ b/osu.Game/Screens/Select/FooterButtonRandom.cs
@@ -12,8 +12,8 @@
 using osu.Game.Input.Bindings;
 using osu.Game.Localisation;
 using osu.Game.Screens.Footer;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/NoResultsPlaceholder.cs b/osu.Game/Screens/Select/NoResultsPlaceholder.cs
index cd38ce2f6c86..2319a57a25fb 100644
--- a/osu.Game/Screens/Select/NoResultsPlaceholder.cs
+++ b/osu.Game/Screens/Select/NoResultsPlaceholder.cs
@@ -14,7 +14,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.Chat;
 using osu.Game.Overlays;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/Panel.cs b/osu.Game/Screens/Select/Panel.cs
index a02710b0a6ef..873baa1f1c30 100644
--- a/osu.Game/Screens/Select/Panel.cs
+++ b/osu.Game/Screens/Select/Panel.cs
@@ -21,8 +21,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -61,9 +60,9 @@ public Drawable Icon
             set => iconContainer.Child = value;
         }
 
-        private Color4? accentColour;
+        private Colour4? accentColour;
 
-        public Color4? AccentColour
+        public Colour4? AccentColour
         {
             get => accentColour;
             set
@@ -158,7 +157,7 @@ private void load(OverlayColourProvider colourProvider, OsuColour colours)
                     },
                     activationFlash = new Box
                     {
-                        Colour = Color4.White.Opacity(0.4f),
+                        Colour = Colour4.White.Opacity(0.4f),
                         Blending = BlendingParameters.Additive,
                         Alpha = 0f,
                         RelativeSizeAxes = Axes.Both,
@@ -276,7 +275,7 @@ protected override bool OnClick(ClickEvent e)
 
         private void updateAccentColour()
         {
-            var backgroundColour = accentColour ?? Color4.White;
+            var backgroundColour = accentColour ?? Colour4.White;
 
             selectionLayer.Colour = ColourInfo.GradientHorizontal(backgroundColour.Opacity(0), backgroundColour.Opacity(0.5f));
 
@@ -309,7 +308,7 @@ private void updateSelectedState(bool animated = true)
                 };
             }
 
-            TopLevelContent.FadeEdgeEffectTo(selectedOrExpanded ? edgeEffectColour.Opacity(0.8f) : Color4.Black.Opacity(0.2f), animated ? DURATION : 0, Easing.OutQuint);
+            TopLevelContent.FadeEdgeEffectTo(selectedOrExpanded ? edgeEffectColour.Opacity(0.8f) : Colour4.Black.Opacity(0.2f), animated ? DURATION : 0, Easing.OutQuint);
 
             if (selectedOrExpanded)
                 selectionLayer.FadeIn(100, Easing.OutQuint);
diff --git a/osu.Game/Screens/Select/PanelBeatmap.cs b/osu.Game/Screens/Select/PanelBeatmap.cs
index 5d095dc348bc..eb4a15d77512 100644
--- a/osu.Game/Screens/Select/PanelBeatmap.cs
+++ b/osu.Game/Screens/Select/PanelBeatmap.cs
@@ -6,7 +6,6 @@
 using System.Threading;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -26,7 +25,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/PanelBeatmapSet.SpreadDisplay.cs b/osu.Game/Screens/Select/PanelBeatmapSet.SpreadDisplay.cs
index 338b4036bd24..a683a73b409d 100644
--- a/osu.Game/Screens/Select/PanelBeatmapSet.SpreadDisplay.cs
+++ b/osu.Game/Screens/Select/PanelBeatmapSet.SpreadDisplay.cs
@@ -18,7 +18,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/PanelBeatmapSet.cs b/osu.Game/Screens/Select/PanelBeatmapSet.cs
index b5c763665a73..4d5f7dde17b1 100644
--- a/osu.Game/Screens/Select/PanelBeatmapSet.cs
+++ b/osu.Game/Screens/Select/PanelBeatmapSet.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
@@ -28,8 +27,7 @@
 using osu.Game.Online.API;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -108,7 +106,7 @@ private void load()
             Background = chevronBackground = new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.White,
+                Colour = Colour4.White,
                 Alpha = 0f,
             };
 
diff --git a/osu.Game/Screens/Select/PanelBeatmapStandalone.SpreadDisplay.cs b/osu.Game/Screens/Select/PanelBeatmapStandalone.SpreadDisplay.cs
index 1e4efe495c97..233d1c0c60cd 100644
--- a/osu.Game/Screens/Select/PanelBeatmapStandalone.SpreadDisplay.cs
+++ b/osu.Game/Screens/Select/PanelBeatmapStandalone.SpreadDisplay.cs
@@ -16,7 +16,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/PanelBeatmapStandalone.cs b/osu.Game/Screens/Select/PanelBeatmapStandalone.cs
index c95323f1d2f0..cd762320eb65 100644
--- a/osu.Game/Screens/Select/PanelBeatmapStandalone.cs
+++ b/osu.Game/Screens/Select/PanelBeatmapStandalone.cs
@@ -22,7 +22,7 @@
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
diff --git a/osu.Game/Screens/Select/PanelGroup.cs b/osu.Game/Screens/Select/PanelGroup.cs
index b693b91f51f1..80413423bb43 100644
--- a/osu.Game/Screens/Select/PanelGroup.cs
+++ b/osu.Game/Screens/Select/PanelGroup.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -17,8 +16,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -104,7 +102,7 @@ private void load()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black.Opacity(0.7f),
+                            Colour = Colour4.Black.Opacity(0.7f),
                         },
                         countText = new OsuSpriteText
                         {
diff --git a/osu.Game/Screens/Select/PanelGroupRankDisplay.cs b/osu.Game/Screens/Select/PanelGroupRankDisplay.cs
index 3cc7ede6e7b7..2a75e169f139 100644
--- a/osu.Game/Screens/Select/PanelGroupRankDisplay.cs
+++ b/osu.Game/Screens/Select/PanelGroupRankDisplay.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -18,8 +17,7 @@
 using osu.Game.Online.Leaderboards;
 using osu.Game.Overlays;
 using osu.Game.Scoring;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -35,7 +33,6 @@ public partial class PanelGroupRankDisplay : Panel
         private Box backgroundBorder = null!;
         private Box contentBackground = null!;
         private OsuSpriteText starRatingText = null!;
-        private CircularContainer countPill = null!;
         private OsuSpriteText countText = null!;
         private TrianglesV2 triangles = null!;
         private Box glow = null!;
@@ -103,7 +100,7 @@ private void load()
                         }
                     }
                 },
-                countPill = new CircularContainer
+                new CircularContainer
                 {
                     Anchor = Anchor.CentreRight,
                     Origin = Anchor.CentreRight,
@@ -115,7 +112,7 @@ private void load()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black.Opacity(0.7f),
+                            Colour = Colour4.Black.Opacity(0.7f),
                         },
                         countText = new OsuSpriteText
                         {
@@ -136,7 +133,7 @@ protected override void LoadComplete()
             Expanded.BindValueChanged(_ => onExpanded(), true);
         }
 
-        private Color4 rankColour;
+        private Colour4 rankColour;
 
         protected override void PrepareForUse()
         {
@@ -174,7 +171,7 @@ protected override void PrepareForUse()
                     break;
 
                 default:
-                    starRatingText.Colour = Color4.White;
+                    starRatingText.Colour = Colour4.White;
                     iconContainer.Colour = colourProvider.Background5;
                     break;
             }
diff --git a/osu.Game/Screens/Select/PanelGroupRankedStatus.cs b/osu.Game/Screens/Select/PanelGroupRankedStatus.cs
index 89737d7a7af3..b65ff2563ebb 100644
--- a/osu.Game/Screens/Select/PanelGroupRankedStatus.cs
+++ b/osu.Game/Screens/Select/PanelGroupRankedStatus.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -18,8 +17,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -35,7 +33,6 @@ public partial class PanelGroupRankedStatus : Panel
         private Box backgroundBorder = null!;
         private Box contentBackground = null!;
         private OsuSpriteText starRatingText = null!;
-        private CircularContainer countPill = null!;
         private OsuSpriteText countText = null!;
         private TrianglesV2 triangles = null!;
         private Box glow = null!;
@@ -106,7 +103,7 @@ private void load()
                         }
                     }
                 },
-                countPill = new CircularContainer
+                new CircularContainer
                 {
                     Anchor = Anchor.CentreRight,
                     Origin = Anchor.CentreRight,
@@ -118,7 +115,7 @@ private void load()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black.Opacity(0.7f),
+                            Colour = Colour4.Black.Opacity(0.7f),
                         },
                         countText = new OsuSpriteText
                         {
@@ -139,7 +136,7 @@ protected override void LoadComplete()
             Expanded.BindValueChanged(_ => onExpanded(), true);
         }
 
-        private Color4 statusColour;
+        private Colour4 statusColour;
 
         protected override void PrepareForUse()
         {
@@ -157,7 +154,7 @@ protected override void PrepareForUse()
                 case BeatmapOnlineStatus.Graveyard:
                     // special override - the colour returned by `ForBeatmapSetOnlineStatus()` for graveyard is pitch black and doesn't allow for any contrast
                     statusColour = colours.Gray5;
-                    iconContainer.Colour = Color4.White;
+                    iconContainer.Colour = Colour4.White;
                     break;
 
                 default:
diff --git a/osu.Game/Screens/Select/PanelGroupStarDifficulty.cs b/osu.Game/Screens/Select/PanelGroupStarDifficulty.cs
index 999f3cfcb2a3..8c5d10f0b116 100644
--- a/osu.Game/Screens/Select/PanelGroupStarDifficulty.cs
+++ b/osu.Game/Screens/Select/PanelGroupStarDifficulty.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -16,8 +15,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -36,7 +34,6 @@ public partial class PanelGroupStarDifficulty : Panel
         private Box backgroundBorder = null!;
         private Box contentBackground = null!;
         private OsuSpriteText starRatingText = null!;
-        private CircularContainer countPill = null!;
         private OsuSpriteText countText = null!;
         private TrianglesV2 triangles = null!;
         private Box glow = null!;
@@ -104,7 +101,7 @@ private void load()
                         }
                     }
                 },
-                countPill = new CircularContainer
+                new CircularContainer
                 {
                     Anchor = Anchor.CentreRight,
                     Origin = Anchor.CentreRight,
@@ -116,7 +113,7 @@ private void load()
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black.Opacity(0.7f),
+                            Colour = Colour4.Black.Opacity(0.7f),
                         },
                         countText = new OsuSpriteText
                         {
@@ -137,7 +134,7 @@ protected override void LoadComplete()
             Expanded.BindValueChanged(_ => onExpanded(), true);
         }
 
-        private Color4 ratingColour;
+        private Colour4 ratingColour;
 
         protected override void PrepareForUse()
         {
diff --git a/osu.Game/Screens/Select/PanelLocalRankDisplay.cs b/osu.Game/Screens/Select/PanelLocalRankDisplay.cs
index a8f705b69889..c00a811b0393 100644
--- a/osu.Game/Screens/Select/PanelLocalRankDisplay.cs
+++ b/osu.Game/Screens/Select/PanelLocalRankDisplay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Online.Leaderboards;
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 using Realms;
 
 namespace osu.Game.Screens.Select
diff --git a/osu.Game/Screens/Select/PanelSetBackground.cs b/osu.Game/Screens/Select/PanelSetBackground.cs
index c40a77f1f5c9..1a7c3e57e1f8 100644
--- a/osu.Game/Screens/Select/PanelSetBackground.cs
+++ b/osu.Game/Screens/Select/PanelSetBackground.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Threading;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Extensions.PolygonExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
@@ -14,8 +13,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Beatmaps;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -107,19 +105,19 @@ private void load(OverlayColourProvider colourProvider)
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black.Opacity(0.5f),
+                            Colour = Colour4.Black.Opacity(0.5f),
                             Width = 0.4f,
                         },
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.5f), Color4.Black.Opacity(0.3f)),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.5f), Colour4.Black.Opacity(0.3f)),
                             Width = 0.2f,
                         },
                         new Box
                         {
                             RelativeSizeAxes = Axes.Both,
-                            Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.3f), Color4.Black.Opacity(0.2f)),
+                            Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.3f), Colour4.Black.Opacity(0.2f)),
                             // Slightly more than 1.0 in total to account for shear.
                             Width = 0.45f,
                         },
diff --git a/osu.Game/Screens/Select/PanelUpdateBeatmapButton.cs b/osu.Game/Screens/Select/PanelUpdateBeatmapButton.cs
index ed05ac4bcd10..614616e66730 100644
--- a/osu.Game/Screens/Select/PanelUpdateBeatmapButton.cs
+++ b/osu.Game/Screens/Select/PanelUpdateBeatmapButton.cs
@@ -18,8 +18,7 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Overlays;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select
@@ -75,7 +74,7 @@ private void load(OsuConfigManager config)
             {
                 progressFill = new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     Alpha = 0.2f,
                     Blending = BlendingParameters.Additive,
                     RelativeSizeAxes = Axes.Both,
diff --git a/osu.Game/Screens/Select/SongSelect.cs b/osu.Game/Screens/Select/SongSelect.cs
index 0add05954b8d..d71b1402dca5 100644
--- a/osu.Game/Screens/Select/SongSelect.cs
+++ b/osu.Game/Screens/Select/SongSelect.cs
@@ -14,7 +14,6 @@
 using osu.Framework.Bindables;
 using osu.Framework.Development;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -51,9 +50,7 @@
 using osu.Game.Screens.Ranking;
 using osu.Game.Skinning;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
 
 namespace osu.Game.Screens.Select
 {
@@ -200,7 +197,7 @@ private void load(AudioManager audio, OsuConfigManager config)
                                 {
                                     RelativeSizeAxes = Axes.Both,
                                     Width = 0.6f,
-                                    Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.3f), Color4.Black.Opacity(0f)),
+                                    Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.3f), Colour4.Black.Opacity(0f)),
                                 },
                                 mainGridContainer = new GridContainer // used for max width implementation
                                 {
@@ -260,7 +257,7 @@ private void load(AudioManager audio, OsuConfigManager config)
                                                     {
                                                         Anchor = Anchor.TopRight,
                                                         Origin = Anchor.TopRight,
-                                                        Colour = ColourInfo.GradientHorizontal(Color4.Black.Opacity(0.0f), Color4.Black.Opacity(0.5f)),
+                                                        Colour = ColourInfo.GradientHorizontal(Colour4.Black.Opacity(0.0f), Colour4.Black.Opacity(0.5f)),
                                                         RelativeSizeAxes = Axes.Both,
                                                     },
                                                     new Container
@@ -856,7 +853,7 @@ private void updateBackgroundDim() => ApplyToBackground(backgroundModeBeatmap =>
 
             // Required to undo results screen dimming the background.
             // Probably needs more thought because this needs to be in every `ApplyToBackground` currently to restore sane defaults.
-            backgroundModeBeatmap.FadeColour(Color4.White, 250);
+            backgroundModeBeatmap.FadeColour(Colour4.White, 250);
 
             bool backgroundRevealActive = revealBackgroundDelegate?.State == ScheduledDelegate.RunState.Running || revealBackgroundDelegate?.State == ScheduledDelegate.RunState.Complete;
             backgroundModeBeatmap.BlurAmount.Value = configBackgroundBlur.Value && !backgroundRevealActive ? 20 : 0f;
diff --git a/osu.Game/Screens/Select/WedgeBackground.cs b/osu.Game/Screens/Select/WedgeBackground.cs
index aa1ce025bda0..c3ef97bf8752 100644
--- a/osu.Game/Screens/Select/WedgeBackground.cs
+++ b/osu.Game/Screens/Select/WedgeBackground.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Shapes;
diff --git a/osu.Game/Screens/Utility/ButtonWithKeyBind.cs b/osu.Game/Screens/Utility/ButtonWithKeyBind.cs
index 7c78836b12cf..617c12d17f0d 100644
--- a/osu.Game/Screens/Utility/ButtonWithKeyBind.cs
+++ b/osu.Game/Screens/Utility/ButtonWithKeyBind.cs
@@ -7,7 +7,7 @@
 using osu.Game.Graphics;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility
 {
diff --git a/osu.Game/Screens/Utility/CircleGameplay.cs b/osu.Game/Screens/Utility/CircleGameplay.cs
index c5c4d7d5b280..18c0bc230943 100644
--- a/osu.Game/Screens/Utility/CircleGameplay.cs
+++ b/osu.Game/Screens/Utility/CircleGameplay.cs
@@ -14,7 +14,7 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Utility.SampleComponents;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Screens.Utility
 {
diff --git a/osu.Game/Screens/Utility/LatencyArea.cs b/osu.Game/Screens/Utility/LatencyArea.cs
index b225171f5dda..9644abce11a5 100644
--- a/osu.Game/Screens/Utility/LatencyArea.cs
+++ b/osu.Game/Screens/Utility/LatencyArea.cs
@@ -12,7 +12,7 @@
 using osu.Game.Graphics.Cursor;
 using osu.Game.Overlays;
 using osu.Game.Screens.Utility.SampleComponents;
-using osuTK.Input;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility
 {
diff --git a/osu.Game/Screens/Utility/LatencyCertifierScreen.cs b/osu.Game/Screens/Utility/LatencyCertifierScreen.cs
index 2695ec77d1b6..68caee7066df 100644
--- a/osu.Game/Screens/Utility/LatencyCertifierScreen.cs
+++ b/osu.Game/Screens/Utility/LatencyCertifierScreen.cs
@@ -7,7 +7,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Configuration;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -24,8 +23,8 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Input;
+using Vector2 = System.Numerics.Vector2;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility
 {
diff --git a/osu.Game/Screens/Utility/SampleComponents/LatencyCursorContainer.cs b/osu.Game/Screens/Utility/SampleComponents/LatencyCursorContainer.cs
index 251d283242c9..1bfa8e99b224 100644
--- a/osu.Game/Screens/Utility/SampleComponents/LatencyCursorContainer.cs
+++ b/osu.Game/Screens/Utility/SampleComponents/LatencyCursorContainer.cs
@@ -7,8 +7,8 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Framework.Input.States;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility.SampleComponents
 {
diff --git a/osu.Game/Screens/Utility/SampleComponents/LatencyMovableBox.cs b/osu.Game/Screens/Utility/SampleComponents/LatencyMovableBox.cs
index ef1b848945d1..3bdf7610c2cb 100644
--- a/osu.Game/Screens/Utility/SampleComponents/LatencyMovableBox.cs
+++ b/osu.Game/Screens/Utility/SampleComponents/LatencyMovableBox.cs
@@ -6,8 +6,8 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
 using osu.Framework.Input.States;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility.SampleComponents
 {
diff --git a/osu.Game/Screens/Utility/ScrollingGameplay.cs b/osu.Game/Screens/Utility/ScrollingGameplay.cs
index 3e0969b62582..c184e70c9494 100644
--- a/osu.Game/Screens/Utility/ScrollingGameplay.cs
+++ b/osu.Game/Screens/Utility/ScrollingGameplay.cs
@@ -13,8 +13,8 @@
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Utility.SampleComponents;
-using osuTK;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Screens.Utility
 {
diff --git a/osu.Game/Seasonal/IntroChristmas.cs b/osu.Game/Seasonal/IntroChristmas.cs
index ac3286f27761..e8a879fcecf2 100644
--- a/osu.Game/Seasonal/IntroChristmas.cs
+++ b/osu.Game/Seasonal/IntroChristmas.cs
@@ -16,8 +16,7 @@
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Menu;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Seasonal
 {
@@ -224,7 +223,7 @@ private partial class GameWideFlash : Box
 
                 public GameWideFlash()
                 {
-                    Colour = Color4.White;
+                    Colour = Colour4.White;
                     RelativeSizeAxes = Axes.Both;
                     Blending = BlendingParameters.Additive;
                 }
@@ -273,7 +272,7 @@ private void load(LargeTextureStore textures)
                         {
                             RelativeSizeAxes = Axes.Both,
                             Texture = textures.Get(@"Intro/Triangles/logo-highlight"),
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                         },
                         background = new LogoAnimation
                         {
@@ -303,7 +302,7 @@ protected override void OnNewBeat(int beatIndex, TimingControlPoint timingPoint,
                         float x = 0.5f + 0.5f * randomRadius * (float)Math.Cos(angle);
                         float y = 0.5f + 0.5f * randomRadius * (float)Math.Sin(angle);
 
-                        Color4 christmasColour = RNG.NextBool() ? SeasonalUIConfig.PRIMARY_COLOUR_1 : SeasonalUIConfig.PRIMARY_COLOUR_2;
+                        Colour4 christmasColour = RNG.NextBool() ? SeasonalUIConfig.PRIMARY_COLOUR_1 : SeasonalUIConfig.PRIMARY_COLOUR_2;
 
                         Drawable triangle = new Triangle
                         {
diff --git a/osu.Game/Seasonal/MainMenuSeasonalLighting.cs b/osu.Game/Seasonal/MainMenuSeasonalLighting.cs
index 30ad7acefe63..1e6c506d6966 100644
--- a/osu.Game/Seasonal/MainMenuSeasonalLighting.cs
+++ b/osu.Game/Seasonal/MainMenuSeasonalLighting.cs
@@ -6,7 +6,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -18,8 +17,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Seasonal
 {
@@ -136,7 +134,7 @@ private void addLight(HitObject h)
             else
             {
                 // default are green
-                Color4 col = SeasonalUIConfig.PRIMARY_COLOUR_2;
+                Colour4 col = SeasonalUIConfig.PRIMARY_COLOUR_2;
 
                 // whistles are red
                 if (h.Samples.Any(s => s.Name == HitSampleInfo.HIT_WHISTLE))
@@ -164,7 +162,7 @@ private partial class Light : CompositeDrawable
         {
             private readonly Circle circle;
 
-            public new Color4 Colour
+            public new Colour4 Colour
             {
                 set
                 {
diff --git a/osu.Game/Seasonal/OsuLogoChristmas.cs b/osu.Game/Seasonal/OsuLogoChristmas.cs
index 8975a69c32ee..2e536c66daec 100644
--- a/osu.Game/Seasonal/OsuLogoChristmas.cs
+++ b/osu.Game/Seasonal/OsuLogoChristmas.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Screens.Menu;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Seasonal
 {
diff --git a/osu.Game/Seasonal/SeasonalMenuSideFlashes.cs b/osu.Game/Seasonal/SeasonalMenuSideFlashes.cs
index 46a0a973bb52..882a10fce8b2 100644
--- a/osu.Game/Seasonal/SeasonalMenuSideFlashes.cs
+++ b/osu.Game/Seasonal/SeasonalMenuSideFlashes.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Utils;
 using osu.Game.Screens.Menu;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Seasonal
 {
@@ -13,6 +13,6 @@ public partial class SeasonalMenuSideFlashes : MenuSideFlashes
 
         protected override float Intensity => 4;
 
-        protected override Color4 GetBaseColour() => RNG.NextBool() ? SeasonalUIConfig.PRIMARY_COLOUR_1 : SeasonalUIConfig.PRIMARY_COLOUR_2;
+        protected override Colour4 GetBaseColour() => RNG.NextBool() ? SeasonalUIConfig.PRIMARY_COLOUR_1 : SeasonalUIConfig.PRIMARY_COLOUR_2;
     }
 }
diff --git a/osu.Game/Seasonal/SeasonalUIConfig.cs b/osu.Game/Seasonal/SeasonalUIConfig.cs
index b894a42108c1..b534ce92ad53 100644
--- a/osu.Game/Seasonal/SeasonalUIConfig.cs
+++ b/osu.Game/Seasonal/SeasonalUIConfig.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Extensions.Color4Extensions;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Seasonal
 {
@@ -13,12 +13,12 @@ public static class SeasonalUIConfig
     {
         public static readonly bool ENABLED = false;
 
-        public static readonly Color4 PRIMARY_COLOUR_1 = Color4Extensions.FromHex(@"D32F2F");
+        public static readonly Colour4 PRIMARY_COLOUR_1 = Color4Extensions.FromHex(@"D32F2F");
 
-        public static readonly Color4 PRIMARY_COLOUR_2 = Color4Extensions.FromHex(@"388E3C");
+        public static readonly Colour4 PRIMARY_COLOUR_2 = Color4Extensions.FromHex(@"388E3C");
 
-        public static readonly Color4 AMBIENT_COLOUR_1 = Color4Extensions.FromHex(@"FFFFCC");
+        public static readonly Colour4 AMBIENT_COLOUR_1 = Color4Extensions.FromHex(@"FFFFCC");
 
-        public static readonly Color4 AMBIENT_COLOUR_2 = Color4Extensions.FromHex(@"FFE4B5");
+        public static readonly Colour4 AMBIENT_COLOUR_2 = Color4Extensions.FromHex(@"FFE4B5");
     }
 }
diff --git a/osu.Game/Skinning/ArgonSkin.cs b/osu.Game/Skinning/ArgonSkin.cs
index b4ba82f2bade..8da48a6e7bc2 100644
--- a/osu.Game/Skinning/ArgonSkin.cs
+++ b/osu.Game/Skinning/ArgonSkin.cs
@@ -16,8 +16,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
 using osu.Game.Skinning.Components;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
@@ -48,7 +47,7 @@ public ArgonSkin(SkinInfo skin, IStorageResourceProvider resources)
         {
             Resources = resources;
 
-            Configuration.CustomComboColours = new List<Color4>
+            Configuration.CustomComboColours = new List<Colour4>
             {
                 // Standard combo progression order is green - blue - red - yellow.
                 // But for whatever reason, this starts from index 1, not 0.
@@ -57,17 +56,17 @@ public ArgonSkin(SkinInfo skin, IStorageResourceProvider resources)
                 // this same progression is in slots 1 - 4.
 
                 // Orange
-                new Color4(241, 116, 0, 255),
+                new Colour4(241, 116, 0, 255),
                 // Green
-                new Color4(0, 241, 53, 255),
+                new Colour4(0, 241, 53, 255),
                 // Blue
-                new Color4(0, 82, 241, 255),
+                new Colour4(0, 82, 241, 255),
                 // Red
-                new Color4(241, 0, 0, 255),
+                new Colour4(241, 0, 0, 255),
                 // Yellow
-                new Color4(232, 235, 0, 255),
+                new Colour4(232, 235, 0, 255),
                 // Purple
-                new Color4(92, 0, 241, 255),
+                new Colour4(92, 0, 241, 255),
             };
         }
 
@@ -298,7 +297,7 @@ public ArgonSkin(SkinInfo skin, IStorageResourceProvider resources)
                         case GlobalSkinColours.ComboColours:
                         {
                             LogLookupDebug(this, lookup, LookupDebugType.Hit);
-                            return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Color4>?>(Configuration.ComboColours));
+                            return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Colour4>?>(Configuration.ComboColours));
                         }
                     }
 
@@ -306,14 +305,14 @@ public ArgonSkin(SkinInfo skin, IStorageResourceProvider resources)
 
                 case SkinComboColourLookup comboColour:
                     LogLookupDebug(this, lookup, LookupDebugType.Hit);
-                    return SkinUtils.As<TValue>(new Bindable<Color4>(getComboColour(Configuration, comboColour.ColourIndex)));
+                    return SkinUtils.As<TValue>(new Bindable<Colour4>(getComboColour(Configuration, comboColour.ColourIndex)));
             }
 
             LogLookupDebug(this, lookup, LookupDebugType.Miss);
             return null;
         }
 
-        private static Color4 getComboColour(IHasComboColours source, int colourIndex)
+        private static Colour4 getComboColour(IHasComboColours source, int colourIndex)
             => source.ComboColours![colourIndex % source.ComboColours.Count];
     }
 }
diff --git a/osu.Game/Skinning/Components/ArgonJudgementCounter.cs b/osu.Game/Skinning/Components/ArgonJudgementCounter.cs
index 84973aab3e6e..0e6a01d0afa9 100644
--- a/osu.Game/Skinning/Components/ArgonJudgementCounter.cs
+++ b/osu.Game/Skinning/Components/ArgonJudgementCounter.cs
@@ -12,7 +12,6 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.JudgementCounter;
-using osuTK.Graphics;
 
 namespace osu.Game.Skinning.Components
 {
@@ -60,10 +59,10 @@ protected override void LoadComplete()
 
             var result = Result.Types.First();
             textComponent.LabelColour.Value = getJudgementColor(result);
-            textComponent.ShowLabel.BindValueChanged(v => textComponent.TextColour.Value = !v.NewValue ? getJudgementColor(result) : Color4.White, true);
+            textComponent.ShowLabel.BindValueChanged(v => textComponent.TextColour.Value = !v.NewValue ? getJudgementColor(result) : Colour4.White, true);
         }
 
-        private Color4 getJudgementColor(HitResult result)
+        private Colour4 getJudgementColor(HitResult result)
         {
             return result.IsBasic() ? colours.ForHitResult(result) : !result.IsBonus() ? colours.PurpleLight : colours.PurpleLighter;
         }
diff --git a/osu.Game/Skinning/Components/ArgonJudgementCounterDisplay.cs b/osu.Game/Skinning/Components/ArgonJudgementCounterDisplay.cs
index 99c88fad8a99..1a53a48ab6c0 100644
--- a/osu.Game/Skinning/Components/ArgonJudgementCounterDisplay.cs
+++ b/osu.Game/Skinning/Components/ArgonJudgementCounterDisplay.cs
@@ -13,7 +13,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD.JudgementCounter;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning.Components
 {
diff --git a/osu.Game/Skinning/Components/BigBlackBox.cs b/osu.Game/Skinning/Components/BigBlackBox.cs
index 3c63dae8d8c6..f3b7f8bd1f1b 100644
--- a/osu.Game/Skinning/Components/BigBlackBox.cs
+++ b/osu.Game/Skinning/Components/BigBlackBox.cs
@@ -10,8 +10,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning.Components
 {
@@ -50,7 +49,7 @@ public BigBlackBox()
             {
                 box = new Box
                 {
-                    Colour = Color4.Black,
+                    Colour = Colour4.Black,
                     RelativeSizeAxes = Axes.Both,
                 },
                 text = new OsuSpriteText
diff --git a/osu.Game/Skinning/Components/BoxElement.cs b/osu.Game/Skinning/Components/BoxElement.cs
index ddfa1aa44666..337a29ba844c 100644
--- a/osu.Game/Skinning/Components/BoxElement.cs
+++ b/osu.Game/Skinning/Components/BoxElement.cs
@@ -9,8 +9,7 @@
 using osu.Game.Configuration;
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Overlays.Settings;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning.Components
 {
@@ -38,7 +37,7 @@ public BoxElement()
             {
                 new Box
                 {
-                    Colour = Color4.White,
+                    Colour = Colour4.White,
                     RelativeSizeAxes = Axes.Both,
                 },
             };
diff --git a/osu.Game/Skinning/DefaultLegacySkin.cs b/osu.Game/Skinning/DefaultLegacySkin.cs
index 34ea0af1222a..2d72a814c0c0 100644
--- a/osu.Game/Skinning/DefaultLegacySkin.cs
+++ b/osu.Game/Skinning/DefaultLegacySkin.cs
@@ -6,7 +6,7 @@
 using osu.Framework.IO.Stores;
 using osu.Game.Extensions;
 using osu.Game.IO;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -34,13 +34,13 @@ public DefaultLegacySkin(SkinInfo skin, IStorageResourceProvider resources)
                 new NamespacedResourceStore<byte[]>(resources.Resources, "Skins/Legacy")
             )
         {
-            Configuration.CustomColours["SliderBall"] = new Color4(2, 170, 255, 255);
-            Configuration.CustomComboColours = new List<Color4>
+            Configuration.CustomColours["SliderBall"] = new Colour4(2, 170, 255, 255);
+            Configuration.CustomComboColours = new List<Colour4>
             {
-                new Color4(255, 192, 0, 255),
-                new Color4(0, 202, 0, 255),
-                new Color4(18, 124, 255, 255),
-                new Color4(242, 24, 57, 255)
+                new Colour4(255, 192, 0, 255),
+                new Colour4(0, 202, 0, 255),
+                new Colour4(18, 124, 255, 255),
+                new Colour4(242, 24, 57, 255)
             };
 
             Configuration.ConfigDictionary[nameof(SkinConfiguration.LegacySetting.AllowSliderBallTint)] = @"true";
diff --git a/osu.Game/Skinning/IAnimationTimeReference.cs b/osu.Game/Skinning/IAnimationTimeReference.cs
index 91f1171a7238..9dcaffe9f7ed 100644
--- a/osu.Game/Skinning/IAnimationTimeReference.cs
+++ b/osu.Game/Skinning/IAnimationTimeReference.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Bindables;
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Timing;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyAccuracyCounter.cs b/osu.Game/Skinning/LegacyAccuracyCounter.cs
index ed12292eb310..32f31136b789 100644
--- a/osu.Game/Skinning/LegacyAccuracyCounter.cs
+++ b/osu.Game/Skinning/LegacyAccuracyCounter.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyBeatmapSkin.cs b/osu.Game/Skinning/LegacyBeatmapSkin.cs
index 365652e6ad25..da4e68ad3ffa 100644
--- a/osu.Game/Skinning/LegacyBeatmapSkin.cs
+++ b/osu.Game/Skinning/LegacyBeatmapSkin.cs
@@ -12,7 +12,6 @@
 using osu.Game.Database;
 using osu.Game.IO;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -86,7 +85,7 @@ private static IResourceStore<byte[]> createRealmBackedStore(BeatmapInfo beatmap
             return base.GetConfig<TLookup, TValue>(lookup);
         }
 
-        protected override IBindable<Color4>? GetComboColour(IHasComboColours source, int comboIndex, IHasComboInformation combo)
+        protected override IBindable<Colour4>? GetComboColour(IHasComboColours source, int comboIndex, IHasComboInformation combo)
             => base.GetComboColour(source, combo.ComboIndexWithOffsets, combo);
 
         public override ISample? GetSample(ISampleInfo sampleInfo)
diff --git a/osu.Game/Skinning/LegacyColourCompatibility.cs b/osu.Game/Skinning/LegacyColourCompatibility.cs
index 38e43432ce4a..86b16c0eede2 100644
--- a/osu.Game/Skinning/LegacyColourCompatibility.cs
+++ b/osu.Game/Skinning/LegacyColourCompatibility.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -12,30 +11,30 @@ namespace osu.Game.Skinning
     public static class LegacyColourCompatibility
     {
         /// <summary>
-        /// Forces an alpha of 1 if a given <see cref="Color4"/> is fully transparent.
+        /// Forces an alpha of 1 if a given <see cref="Colour4"/> is fully transparent.
         /// </summary>
         /// <remarks>
         /// This is equivalent to setting colour post-constructor in osu!stable.
         /// </remarks>
-        /// <param name="colour">The <see cref="Color4"/> to disallow zero alpha on.</param>
-        /// <returns>The resultant <see cref="Color4"/>.</returns>
-        public static Color4 DisallowZeroAlpha(Color4 colour)
+        /// <param name="colour">The <see cref="Colour4"/> to disallow zero alpha on.</param>
+        /// <returns>The resultant <see cref="Colour4"/>.</returns>
+        public static Colour4 DisallowZeroAlpha(Colour4 colour)
         {
             if (colour.A == 0)
-                colour.A = 1;
+                colour = new Colour4(colour.R, colour.G, colour.B, 1f);
             return colour;
         }
 
         /// <summary>
-        /// Applies a <see cref="Color4"/> to a <see cref="Drawable"/>, doubling the alpha value into the <see cref="Drawable.Alpha"/> property.
+        /// Applies a <see cref="Colour4"/> to a <see cref="Drawable"/>, doubling the alpha value into the <see cref="Drawable.Alpha"/> property.
         /// </summary>
         /// <remarks>
         /// This is equivalent to setting colour in the constructor in osu!stable.
         /// </remarks>
         /// <param name="drawable">The <see cref="Drawable"/> to apply the colour to.</param>
-        /// <param name="colour">The <see cref="Color4"/> to apply.</param>
+        /// <param name="colour">The <see cref="Colour4"/> to apply.</param>
         /// <returns>The given <paramref name="drawable"/>.</returns>
-        public static T ApplyWithDoubledAlpha<T>(T drawable, Color4 colour)
+        public static T ApplyWithDoubledAlpha<T>(T drawable, Colour4 colour)
             where T : Drawable
         {
             drawable.Alpha = colour.A;
diff --git a/osu.Game/Skinning/LegacyDefaultComboCounter.cs b/osu.Game/Skinning/LegacyDefaultComboCounter.cs
index 7de4aee65635..75f22cda0ee4 100644
--- a/osu.Game/Skinning/LegacyDefaultComboCounter.cs
+++ b/osu.Game/Skinning/LegacyDefaultComboCounter.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyHealthDisplay.cs b/osu.Game/Skinning/LegacyHealthDisplay.cs
index bd59eb342df4..e0b0e9669c2a 100644
--- a/osu.Game/Skinning/LegacyHealthDisplay.cs
+++ b/osu.Game/Skinning/LegacyHealthDisplay.cs
@@ -13,8 +13,7 @@
 using osu.Framework.Utils;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Utils;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
@@ -90,15 +89,15 @@ protected override void HealthChanged(bool increase)
 
         private static Texture getTexture(ISkin skin, string name) => skin?.GetTexture($"scorebar-{name}");
 
-        private static Color4 getFillColour(double hp)
+        private static Colour4 getFillColour(double hp)
         {
             if (hp < 0.2)
-                return LegacyUtils.InterpolateNonLinear(0.2 - hp, Color4.Black, Color4.Red, 0, 0.2);
+                return LegacyUtils.InterpolateNonLinear(0.2 - hp, Colour4.Black, Colour4.Red, 0, 0.2);
 
             if (hp < epic_cutoff)
-                return LegacyUtils.InterpolateNonLinear(0.5 - hp, Color4.White, Color4.Black, 0, 0.5);
+                return LegacyUtils.InterpolateNonLinear(0.5 - hp, Colour4.White, Colour4.Black, 0, 0.5);
 
-            return Color4.White;
+            return Colour4.White;
         }
 
         public partial class LegacyOldStyleMarker : LegacyMarker
diff --git a/osu.Game/Skinning/LegacyJudgementPieceNew.cs b/osu.Game/Skinning/LegacyJudgementPieceNew.cs
index 5ff28726c02a..a71cdc682eb4 100644
--- a/osu.Game/Skinning/LegacyJudgementPieceNew.cs
+++ b/osu.Game/Skinning/LegacyJudgementPieceNew.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyJudgementPieceOld.cs b/osu.Game/Skinning/LegacyJudgementPieceOld.cs
index c8630b54a6ff..8fd0379ca214 100644
--- a/osu.Game/Skinning/LegacyJudgementPieceOld.cs
+++ b/osu.Game/Skinning/LegacyJudgementPieceOld.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyKeyCounterDisplay.cs b/osu.Game/Skinning/LegacyKeyCounterDisplay.cs
index b495cc26b762..f92a41627829 100644
--- a/osu.Game/Skinning/LegacyKeyCounterDisplay.cs
+++ b/osu.Game/Skinning/LegacyKeyCounterDisplay.cs
@@ -8,8 +8,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
@@ -55,7 +54,7 @@ protected override void LoadComplete()
         {
             base.LoadComplete();
 
-            KeyTextColor = source.GetConfig<SkinCustomColourLookup, Color4>(new SkinCustomColourLookup(SkinConfiguration.LegacySetting.InputOverlayText))?.Value ?? Color4.Black;
+            KeyTextColor = source.GetConfig<SkinCustomColourLookup, Colour4>(new SkinCustomColourLookup(SkinConfiguration.LegacySetting.InputOverlayText))?.Value ?? Colour4.Black;
 
             Texture? backgroundTexture = source.GetTexture(@"inputoverlay-background");
 
diff --git a/osu.Game/Skinning/LegacyKiaiFlashingDrawable.cs b/osu.Game/Skinning/LegacyKiaiFlashingDrawable.cs
index 2f79512ed82d..11712721d903 100644
--- a/osu.Game/Skinning/LegacyKiaiFlashingDrawable.cs
+++ b/osu.Game/Skinning/LegacyKiaiFlashingDrawable.cs
@@ -6,13 +6,12 @@
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Graphics.Containers;
-using osuTK.Graphics;
 
 namespace osu.Game.Skinning
 {
     public partial class LegacyKiaiFlashingDrawable : BeatSyncedContainer
     {
-        public Color4 KiaiGlowColour
+        public Colour4 KiaiGlowColour
         {
             get => flashingDrawable.Colour;
             set => flashingDrawable.Colour = value;
diff --git a/osu.Game/Skinning/LegacyManiaSkinConfiguration.cs b/osu.Game/Skinning/LegacyManiaSkinConfiguration.cs
index 1e6fa44e68d1..8475bc93a963 100644
--- a/osu.Game/Skinning/LegacyManiaSkinConfiguration.cs
+++ b/osu.Game/Skinning/LegacyManiaSkinConfiguration.cs
@@ -5,7 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps.Formats;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -25,7 +25,7 @@ public class LegacyManiaSkinConfiguration : IHasCustomColours
 
         public readonly int Keys;
 
-        public Dictionary<string, Color4> CustomColours { get; } = new Dictionary<string, Color4>();
+        public Dictionary<string, Colour4> CustomColours { get; } = new Dictionary<string, Colour4>();
 
         public Dictionary<string, string> ImageLookups = new Dictionary<string, string>();
 
diff --git a/osu.Game/Skinning/LegacyPerformancePointsCounter.cs b/osu.Game/Skinning/LegacyPerformancePointsCounter.cs
index a71ecaabde70..9be6017fff9f 100644
--- a/osu.Game/Skinning/LegacyPerformancePointsCounter.cs
+++ b/osu.Game/Skinning/LegacyPerformancePointsCounter.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyRankDisplay.cs b/osu.Game/Skinning/LegacyRankDisplay.cs
index 64376f0dbdb9..ae2c59dcf05f 100644
--- a/osu.Game/Skinning/LegacyRankDisplay.cs
+++ b/osu.Game/Skinning/LegacyRankDisplay.cs
@@ -12,7 +12,7 @@
 using osu.Game.Overlays.SkinEditor;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacyScoreCounter.cs b/osu.Game/Skinning/LegacyScoreCounter.cs
index a86f12283658..a988fc11b0cb 100644
--- a/osu.Game/Skinning/LegacyScoreCounter.cs
+++ b/osu.Game/Skinning/LegacyScoreCounter.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacySkin.cs b/osu.Game/Skinning/LegacySkin.cs
index 2e769ba1e018..d9094138f2af 100644
--- a/osu.Game/Skinning/LegacySkin.cs
+++ b/osu.Game/Skinning/LegacySkin.cs
@@ -23,8 +23,7 @@
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
@@ -91,7 +90,7 @@ protected override void ParseConfigurationStream(Stream stream)
                             case GlobalSkinColours.ComboColours:
                                 var comboColours = Configuration.ComboColours;
                                 if (comboColours != null)
-                                    return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Color4>>(comboColours));
+                                    return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Colour4>>(comboColours));
 
                                 break;
 
@@ -314,14 +313,14 @@ protected override void ParseConfigurationStream(Stream stream)
         /// <param name="source">The source to retrieve the combo colours from.</param>
         /// <param name="colourIndex">The preferred index for retrieving the combo colour with.</param>
         /// <param name="combo">Information on the combo whose using the returned colour.</param>
-        protected virtual IBindable<Color4>? GetComboColour(IHasComboColours source, int colourIndex, IHasComboInformation combo)
+        protected virtual IBindable<Colour4>? GetComboColour(IHasComboColours source, int colourIndex, IHasComboInformation combo)
         {
             var colour = source.ComboColours?[colourIndex % source.ComboColours.Count];
-            return colour.HasValue ? new Bindable<Color4>(colour.Value) : null;
+            return colour.HasValue ? new Bindable<Colour4>(colour.Value) : null;
         }
 
-        private IBindable<Color4>? getCustomColour(IHasCustomColours source, string lookup)
-            => source.CustomColours.TryGetValue(lookup, out var col) ? new Bindable<Color4>(col) : null;
+        private IBindable<Colour4>? getCustomColour(IHasCustomColours source, string lookup)
+            => source.CustomColours.TryGetValue(lookup, out var col) ? new Bindable<Colour4>(col) : null;
 
         private IBindable<string>? getManiaImage(LegacyManiaSkinConfiguration source, string lookup)
             => source.ImageLookups.TryGetValue(lookup, out string? image) ? new Bindable<string>(image) : null;
diff --git a/osu.Game/Skinning/LegacySkinExtensions.cs b/osu.Game/Skinning/LegacySkinExtensions.cs
index 178a27319534..2f54023a6df1 100644
--- a/osu.Game/Skinning/LegacySkinExtensions.cs
+++ b/osu.Game/Skinning/LegacySkinExtensions.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
-using osuTK;
+using System.Numerics;
 using static osu.Game.Skinning.SkinConfiguration;
 
 namespace osu.Game.Skinning
diff --git a/osu.Game/Skinning/LegacySongProgress.cs b/osu.Game/Skinning/LegacySongProgress.cs
index 9af82c4992da..24ac5be673ae 100644
--- a/osu.Game/Skinning/LegacySongProgress.cs
+++ b/osu.Game/Skinning/LegacySongProgress.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/LegacySpriteText.cs b/osu.Game/Skinning/LegacySpriteText.cs
index e307577c2f10..c51a008d3e40 100644
--- a/osu.Game/Skinning/LegacySpriteText.cs
+++ b/osu.Game/Skinning/LegacySpriteText.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Text;
 using osu.Game.Graphics.Sprites;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/RetroSkin.cs b/osu.Game/Skinning/RetroSkin.cs
index 20214dfb6720..7507c2b0c54b 100644
--- a/osu.Game/Skinning/RetroSkin.cs
+++ b/osu.Game/Skinning/RetroSkin.cs
@@ -7,7 +7,7 @@
 using osu.Framework.IO.Stores;
 using osu.Game.Extensions;
 using osu.Game.IO;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -49,10 +49,10 @@ public RetroSkin(SkinInfo skin, IStorageResourceProvider resources)
 
             Configuration.CustomComboColours =
             [
-                new Color4(255, 150, 0, 255),
-                new Color4(5, 240, 5, 255),
-                new Color4(5, 5, 240, 255),
-                new Color4(240, 5, 5, 255)
+                new Colour4(255, 150, 0, 255),
+                new Colour4(5, 240, 5, 255),
+                new Colour4(5, 5, 240, 255),
+                new Colour4(240, 5, 5, 255)
             ];
 
             Configuration.ConfigDictionary[@"HitCircleOverlap"] = "3";
diff --git a/osu.Game/Skinning/SerialisedDrawableInfo.cs b/osu.Game/Skinning/SerialisedDrawableInfo.cs
index b4be5745d1ea..f3635f841aba 100644
--- a/osu.Game/Skinning/SerialisedDrawableInfo.cs
+++ b/osu.Game/Skinning/SerialisedDrawableInfo.cs
@@ -12,7 +12,7 @@
 using osu.Game.Configuration;
 using osu.Game.Extensions;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/SkinConfiguration.cs b/osu.Game/Skinning/SkinConfiguration.cs
index a657a667eb8a..c02d2614695e 100644
--- a/osu.Game/Skinning/SkinConfiguration.cs
+++ b/osu.Game/Skinning/SkinConfiguration.cs
@@ -3,7 +3,7 @@
 
 using System.Collections.Generic;
 using osu.Game.Beatmaps.Formats;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Skinning
 {
@@ -41,17 +41,17 @@ public enum LegacySetting
             InputOverlayText,
         }
 
-        public static List<Color4> DefaultComboColours { get; } = new List<Color4>
+        public static List<Colour4> DefaultComboColours { get; } = new List<Colour4>
         {
-            new Color4(255, 192, 0, 255),
-            new Color4(0, 202, 0, 255),
-            new Color4(18, 124, 255, 255),
-            new Color4(242, 24, 57, 255),
+            new Colour4(255, 192, 0, 255),
+            new Colour4(0, 202, 0, 255),
+            new Colour4(18, 124, 255, 255),
+            new Colour4(242, 24, 57, 255),
         };
 
-        public List<Color4> CustomComboColours { get; set; } = new List<Color4>();
+        public List<Colour4> CustomComboColours { get; set; } = new List<Colour4>();
 
-        public IReadOnlyList<Color4>? ComboColours
+        public IReadOnlyList<Colour4>? ComboColours
         {
             get
             {
@@ -65,7 +65,7 @@ public IReadOnlyList<Color4>? ComboColours
             }
         }
 
-        public Dictionary<string, Color4> CustomColours { get; } = new Dictionary<string, Color4>();
+        public Dictionary<string, Colour4> CustomColours { get; } = new Dictionary<string, Colour4>();
 
         public readonly Dictionary<string, string> ConfigDictionary = new Dictionary<string, string>();
     }
diff --git a/osu.Game/Skinning/SkinnableDrawable.cs b/osu.Game/Skinning/SkinnableDrawable.cs
index 255aba94ae22..0625d2ed5c27 100644
--- a/osu.Game/Skinning/SkinnableDrawable.cs
+++ b/osu.Game/Skinning/SkinnableDrawable.cs
@@ -5,7 +5,7 @@
 using osu.Framework.Caching;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Animations;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/SkinnableSprite.cs b/osu.Game/Skinning/SkinnableSprite.cs
index 25bc32eaf226..ead7d07f9939 100644
--- a/osu.Game/Skinning/SkinnableSprite.cs
+++ b/osu.Game/Skinning/SkinnableSprite.cs
@@ -15,7 +15,7 @@
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Overlays.Settings;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
diff --git a/osu.Game/Skinning/Triangles/TrianglesPerformancePointsCounter.cs b/osu.Game/Skinning/Triangles/TrianglesPerformancePointsCounter.cs
index d6753a81ba9a..73ada8916174 100644
--- a/osu.Game/Skinning/Triangles/TrianglesPerformancePointsCounter.cs
+++ b/osu.Game/Skinning/Triangles/TrianglesPerformancePointsCounter.cs
@@ -10,7 +10,7 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning.Triangles
 {
diff --git a/osu.Game/Skinning/Triangles/TrianglesUnstableRateCounter.cs b/osu.Game/Skinning/Triangles/TrianglesUnstableRateCounter.cs
index 7c6046914dc8..b1a394a2005e 100644
--- a/osu.Game/Skinning/Triangles/TrianglesUnstableRateCounter.cs
+++ b/osu.Game/Skinning/Triangles/TrianglesUnstableRateCounter.cs
@@ -9,7 +9,7 @@
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Screens.Play.HUD;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Skinning.Triangles
 {
diff --git a/osu.Game/Skinning/TrianglesSkin.cs b/osu.Game/Skinning/TrianglesSkin.cs
index 8e899675c802..9077ce03496c 100644
--- a/osu.Game/Skinning/TrianglesSkin.cs
+++ b/osu.Game/Skinning/TrianglesSkin.cs
@@ -16,8 +16,7 @@
 using osu.Game.Screens.Play.HUD;
 using osu.Game.Screens.Play.HUD.HitErrorMeters;
 using osu.Game.Skinning.Triangles;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Skinning
 {
@@ -220,7 +219,7 @@ public TrianglesSkin(SkinInfo skin, IStorageResourceProvider resources)
                         case GlobalSkinColours.ComboColours:
                         {
                             LogLookupDebug(this, lookup, LookupDebugType.Hit);
-                            return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Color4>?>(Configuration.ComboColours));
+                            return SkinUtils.As<TValue>(new Bindable<IReadOnlyList<Colour4>?>(Configuration.ComboColours));
                         }
                     }
 
@@ -228,14 +227,14 @@ public TrianglesSkin(SkinInfo skin, IStorageResourceProvider resources)
 
                 case SkinComboColourLookup comboColour:
                     LogLookupDebug(this, lookup, LookupDebugType.Hit);
-                    return SkinUtils.As<TValue>(new Bindable<Color4>(getComboColour(Configuration, comboColour.ColourIndex)));
+                    return SkinUtils.As<TValue>(new Bindable<Colour4>(getComboColour(Configuration, comboColour.ColourIndex)));
             }
 
             LogLookupDebug(this, lookup, LookupDebugType.Miss);
             return null;
         }
 
-        private static Color4 getComboColour(IHasComboColours source, int colourIndex)
+        private static Colour4 getComboColour(IHasComboColours source, int colourIndex)
             => source.ComboColours![colourIndex % source.ComboColours.Count];
     }
 }
diff --git a/osu.Game/Storyboards/Commands/StoryboardColourCommand.cs b/osu.Game/Storyboards/Commands/StoryboardColourCommand.cs
index da8a20647cfa..850a8056dc8b 100644
--- a/osu.Game/Storyboards/Commands/StoryboardColourCommand.cs
+++ b/osu.Game/Storyboards/Commands/StoryboardColourCommand.cs
@@ -3,13 +3,12 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Transforms;
-using osuTK.Graphics;
 
 namespace osu.Game.Storyboards.Commands
 {
-    public class StoryboardColourCommand : StoryboardCommand<Color4>
+    public class StoryboardColourCommand : StoryboardCommand<Colour4>
     {
-        public StoryboardColourCommand(Easing easing, double startTime, double endTime, Color4 startValue, Color4 endValue)
+        public StoryboardColourCommand(Easing easing, double startTime, double endTime, Colour4 startValue, Colour4 endValue)
             : base(easing, startTime, endTime, startValue, endValue)
         {
         }
diff --git a/osu.Game/Storyboards/Commands/StoryboardCommandGroup.cs b/osu.Game/Storyboards/Commands/StoryboardCommandGroup.cs
index 092523141218..7886f660ed1c 100644
--- a/osu.Game/Storyboards/Commands/StoryboardCommandGroup.cs
+++ b/osu.Game/Storyboards/Commands/StoryboardCommandGroup.cs
@@ -6,8 +6,7 @@
 using Newtonsoft.Json;
 using osu.Framework.Graphics;
 using osu.Framework.Lists;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Commands
 {
@@ -33,9 +32,9 @@ public class StoryboardCommandGroup
 
         public IReadOnlyList<StoryboardCommand<float>> Rotation => rotation;
 
-        private readonly SortedList<StoryboardCommand<Color4>> colour = new SortedList<StoryboardCommand<Color4>>();
+        private readonly SortedList<StoryboardCommand<Colour4>> colour = new SortedList<StoryboardCommand<Colour4>>();
 
-        public IReadOnlyList<StoryboardCommand<Color4>> Colour => colour;
+        public IReadOnlyList<StoryboardCommand<Colour4>> Colour => colour;
 
         private readonly SortedList<StoryboardCommand<float>> alpha = new SortedList<StoryboardCommand<float>>();
 
@@ -95,7 +94,7 @@ public void AddVectorScale(Easing easing, double startTime, double endTime, Vect
         public void AddRotation(Easing easing, double startTime, double endTime, float startValue, float endValue)
             => AddCommand(rotation, new StoryboardRotationCommand(easing, startTime, endTime, startValue, endValue));
 
-        public void AddColour(Easing easing, double startTime, double endTime, Color4 startValue, Color4 endValue)
+        public void AddColour(Easing easing, double startTime, double endTime, Colour4 startValue, Colour4 endValue)
             => AddCommand(colour, new StoryboardColourCommand(easing, startTime, endTime, startValue, endValue));
 
         public void AddAlpha(Easing easing, double startTime, double endTime, float startValue, float endValue)
diff --git a/osu.Game/Storyboards/Commands/StoryboardScaleCommand.cs b/osu.Game/Storyboards/Commands/StoryboardScaleCommand.cs
index 832533af5ebd..761f2c34b7c2 100644
--- a/osu.Game/Storyboards/Commands/StoryboardScaleCommand.cs
+++ b/osu.Game/Storyboards/Commands/StoryboardScaleCommand.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Transforms;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Commands
 {
diff --git a/osu.Game/Storyboards/Commands/StoryboardVectorScaleCommand.cs b/osu.Game/Storyboards/Commands/StoryboardVectorScaleCommand.cs
index 06983a159066..ad48b3e6c0ce 100644
--- a/osu.Game/Storyboards/Commands/StoryboardVectorScaleCommand.cs
+++ b/osu.Game/Storyboards/Commands/StoryboardVectorScaleCommand.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Transforms;
 using osu.Game.Storyboards.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Commands
 {
diff --git a/osu.Game/Storyboards/Drawables/DrawableStoryboard.cs b/osu.Game/Storyboards/Drawables/DrawableStoryboard.cs
index 1cfc7b2a180e..59d7157e24ae 100644
--- a/osu.Game/Storyboards/Drawables/DrawableStoryboard.cs
+++ b/osu.Game/Storyboards/Drawables/DrawableStoryboard.cs
@@ -17,7 +17,7 @@
 using osu.Game.IO.Stores;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Play;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
diff --git a/osu.Game/Storyboards/Drawables/DrawableStoryboardAnimation.cs b/osu.Game/Storyboards/Drawables/DrawableStoryboardAnimation.cs
index e45b1d272a9f..78b7a2ce1a42 100644
--- a/osu.Game/Storyboards/Drawables/DrawableStoryboardAnimation.cs
+++ b/osu.Game/Storyboards/Drawables/DrawableStoryboardAnimation.cs
@@ -12,7 +12,7 @@
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
@@ -66,7 +66,9 @@ public Vector2 VectorScale
         public override bool RemoveWhenNotAlive => false;
 
         protected override Vector2 DrawScale
-            => new Vector2(FlipH ? -base.DrawScale.X : base.DrawScale.X, FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale;
+            => new Vector2(
+                (FlipH ? -base.DrawScale.X : base.DrawScale.X) * VectorScale.X,
+                (FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale.Y);
 
         public override Anchor Origin => StoryboardExtensions.AdjustOrigin(base.Origin, VectorScale, FlipH, FlipV);
 
diff --git a/osu.Game/Storyboards/Drawables/DrawableStoryboardLayer.cs b/osu.Game/Storyboards/Drawables/DrawableStoryboardLayer.cs
index 40842fe7ed36..a6273814cb40 100644
--- a/osu.Game/Storyboards/Drawables/DrawableStoryboardLayer.cs
+++ b/osu.Game/Storyboards/Drawables/DrawableStoryboardLayer.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
diff --git a/osu.Game/Storyboards/Drawables/DrawableStoryboardSprite.cs b/osu.Game/Storyboards/Drawables/DrawableStoryboardSprite.cs
index a9b031bef3d7..f47da82c21ce 100644
--- a/osu.Game/Storyboards/Drawables/DrawableStoryboardSprite.cs
+++ b/osu.Game/Storyboards/Drawables/DrawableStoryboardSprite.cs
@@ -9,7 +9,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Utils;
 using osu.Game.Skinning;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
@@ -62,8 +62,10 @@ public Vector2 VectorScale
 
         public override bool RemoveWhenNotAlive => false;
 
-        protected override Vector2 DrawScale
-            => new Vector2(FlipH ? -base.DrawScale.X : base.DrawScale.X, FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale;
+        protected override System.Numerics.Vector2 DrawScale
+            => new System.Numerics.Vector2(
+                (FlipH ? -base.DrawScale.X : base.DrawScale.X) * VectorScale.X,
+                (FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale.Y);
 
         public override Anchor Origin => StoryboardExtensions.AdjustOrigin(base.Origin, VectorScale, FlipH, FlipV);
 
@@ -118,13 +120,13 @@ private void load(Storyboard storyboard)
 
         private void skinSourceChanged()
         {
-            // Prefer the storyboard's LargeTextureStore (backed by the beatmap folder) so that large
-            // storyboard backgrounds (e.g. 2732×1572) are never routed through the skin's regular
-            // atlased TextureStore, which would exceed the 2048×2048 atlas limit and cause atlas
-            // overflow stalls on Android Vulkan. Only fall back to the skin when the beatmap folder
-            // doesn't contain the asset (e.g. a standard skin element like "hit300").
-            Texture = textureStore.Get(Sprite.Path, WrapMode.ClampToEdge, WrapMode.ClampToEdge) ??
-                      skin.GetTexture(Sprite.Path, WrapMode.ClampToEdge, WrapMode.ClampToEdge);
+            // Prefer the skin for standard skin elements (e.g. "hit300", "hitcircleoverlay").
+            // Fall back to the storyboard's LargeTextureStore (backed by the beatmap folder) for
+            // storyboard-specific assets such as large backgrounds (e.g. 2732×1572). Those are never
+            // found in the skin, so they correctly bypass the skin's atlased TextureStore and avoid
+            // atlas-overflow stalls on Android Vulkan.
+            Texture = skin.GetTexture(Sprite.Path, WrapMode.ClampToEdge, WrapMode.ClampToEdge) ??
+                      textureStore.Get(Sprite.Path, WrapMode.ClampToEdge, WrapMode.ClampToEdge);
 
             // Setting texture will only update the size if it's zero.
             // So let's force an explicit update.
diff --git a/osu.Game/Storyboards/Drawables/DrawableStoryboardVideo.cs b/osu.Game/Storyboards/Drawables/DrawableStoryboardVideo.cs
index 4446e922c4c3..1550d2a6a2da 100644
--- a/osu.Game/Storyboards/Drawables/DrawableStoryboardVideo.cs
+++ b/osu.Game/Storyboards/Drawables/DrawableStoryboardVideo.cs
@@ -10,7 +10,7 @@
 using osu.Framework.Graphics.Textures;
 using osu.Framework.Graphics.Video;
 using osu.Framework.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
@@ -121,8 +121,10 @@ public Vector2 VectorScale
                 }
             }
 
-            protected override Vector2 DrawScale
-                => new Vector2(FlipH ? -base.DrawScale.X : base.DrawScale.X, FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale;
+            protected override System.Numerics.Vector2 DrawScale
+                => new System.Numerics.Vector2(
+                    (FlipH ? -base.DrawScale.X : base.DrawScale.X) * VectorScale.X,
+                    (FlipV ? -base.DrawScale.Y : base.DrawScale.Y) * VectorScale.Y);
 
             public override Anchor Origin => StoryboardExtensions.AdjustOrigin(base.Origin, VectorScale, FlipH, FlipV);
 
diff --git a/osu.Game/Storyboards/Drawables/IVectorScalable.cs b/osu.Game/Storyboards/Drawables/IVectorScalable.cs
index ce6047c8f6ef..b02358b6db35 100644
--- a/osu.Game/Storyboards/Drawables/IVectorScalable.cs
+++ b/osu.Game/Storyboards/Drawables/IVectorScalable.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards.Drawables
 {
diff --git a/osu.Game/Storyboards/StoryboardAnimation.cs b/osu.Game/Storyboards/StoryboardAnimation.cs
index 11a1651ba9a7..fdb3c81c4305 100644
--- a/osu.Game/Storyboards/StoryboardAnimation.cs
+++ b/osu.Game/Storyboards/StoryboardAnimation.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Game.Storyboards.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards
 {
diff --git a/osu.Game/Storyboards/StoryboardExtensions.cs b/osu.Game/Storyboards/StoryboardExtensions.cs
index 110af73ccaed..91fc418d4d85 100644
--- a/osu.Game/Storyboards/StoryboardExtensions.cs
+++ b/osu.Game/Storyboards/StoryboardExtensions.cs
@@ -2,7 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards
 {
diff --git a/osu.Game/Storyboards/StoryboardSprite.cs b/osu.Game/Storyboards/StoryboardSprite.cs
index 3765e2f33119..9d0f018c0892 100644
--- a/osu.Game/Storyboards/StoryboardSprite.cs
+++ b/osu.Game/Storyboards/StoryboardSprite.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Storyboards.Commands;
 using osu.Game.Storyboards.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards
 {
diff --git a/osu.Game/Storyboards/StoryboardVideo.cs b/osu.Game/Storyboards/StoryboardVideo.cs
index 5a9eb533c695..2c00b68dee3c 100644
--- a/osu.Game/Storyboards/StoryboardVideo.cs
+++ b/osu.Game/Storyboards/StoryboardVideo.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Game.Storyboards.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards
 {
diff --git a/osu.Game/Storyboards/StoryboardVideoLayer.cs b/osu.Game/Storyboards/StoryboardVideoLayer.cs
index f78060402963..68dd4dc53811 100644
--- a/osu.Game/Storyboards/StoryboardVideoLayer.cs
+++ b/osu.Game/Storyboards/StoryboardVideoLayer.cs
@@ -3,7 +3,7 @@
 
 using osu.Framework.Graphics;
 using osu.Game.Storyboards.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Storyboards
 {
diff --git a/osu.Game/Tests/Beatmaps/LegacyBeatmapSkinColourTest.cs b/osu.Game/Tests/Beatmaps/LegacyBeatmapSkinColourTest.cs
index 2488aeccedff..01fea1aef252 100644
--- a/osu.Game/Tests/Beatmaps/LegacyBeatmapSkinColourTest.cs
+++ b/osu.Game/Tests/Beatmaps/LegacyBeatmapSkinColourTest.cs
@@ -13,7 +13,7 @@
 using osu.Game.Beatmaps;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Tests.Beatmaps
 {
@@ -77,10 +77,10 @@ protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnl
                 return dependencies;
             }
 
-            public IReadOnlyList<Color4> UsableComboColours =>
+            public IReadOnlyList<Colour4> UsableComboColours =>
                 GameplayClockContainer.ChildrenOfType<BeatmapSkinProvidingContainer>()
                                       .First()
-                                      .GetConfig<GlobalSkinColours, IReadOnlyList<Color4>>(GlobalSkinColours.ComboColours)?.Value;
+                                      .GetConfig<GlobalSkinColours, IReadOnlyList<Colour4>>(GlobalSkinColours.ComboColours)?.Value;
         }
 
         protected class CustomSkinWorkingBeatmap : ClockBackedTestWorkingBeatmap
@@ -98,19 +98,19 @@ public CustomSkinWorkingBeatmap(IBeatmap beatmap, AudioManager audio, bool hasCo
 
         protected class TestBeatmapSkin : LegacyBeatmapSkin
         {
-            public static Color4[] Colours { get; } =
+            public static Colour4[] Colours { get; } =
             {
-                new Color4(50, 100, 150, 255),
-                new Color4(40, 80, 120, 255),
-                new Color4(25, 50, 75, 255),
-                new Color4(10, 20, 30, 255),
+                new Colour4(50, 100, 150, 255),
+                new Colour4(40, 80, 120, 255),
+                new Colour4(25, 50, 75, 255),
+                new Colour4(10, 20, 30, 255),
             };
 
-            public static readonly Color4 HYPER_DASH_COLOUR = Color4.DarkBlue;
+            public static readonly Colour4 HYPER_DASH_COLOUR = Colour4.DarkBlue;
 
-            public static readonly Color4 HYPER_DASH_AFTER_IMAGE_COLOUR = Color4.DarkCyan;
+            public static readonly Colour4 HYPER_DASH_AFTER_IMAGE_COLOUR = Colour4.DarkCyan;
 
-            public static readonly Color4 HYPER_DASH_FRUIT_COLOUR = Color4.DarkGoldenrod;
+            public static readonly Colour4 HYPER_DASH_FRUIT_COLOUR = Colour4.DarkGoldenrod;
 
             public TestBeatmapSkin(BeatmapInfo beatmapInfo, bool hasColours)
                 : base(beatmapInfo, null)
@@ -127,19 +127,19 @@ public TestBeatmapSkin(BeatmapInfo beatmapInfo, bool hasColours)
 
         protected class TestSkin : LegacySkin, ISkinSource
         {
-            public static Color4[] Colours { get; } =
+            public static Colour4[] Colours { get; } =
             {
-                new Color4(150, 100, 50, 255),
-                new Color4(20, 20, 20, 255),
-                new Color4(75, 50, 25, 255),
-                new Color4(80, 80, 80, 255),
+                new Colour4(150, 100, 50, 255),
+                new Colour4(20, 20, 20, 255),
+                new Colour4(75, 50, 25, 255),
+                new Colour4(80, 80, 80, 255),
             };
 
-            public static readonly Color4 HYPER_DASH_COLOUR = Color4.LightBlue;
+            public static readonly Colour4 HYPER_DASH_COLOUR = Colour4.LightBlue;
 
-            public static readonly Color4 HYPER_DASH_AFTER_IMAGE_COLOUR = Color4.LightCoral;
+            public static readonly Colour4 HYPER_DASH_AFTER_IMAGE_COLOUR = Colour4.LightCoral;
 
-            public static readonly Color4 HYPER_DASH_FRUIT_COLOUR = Color4.LightCyan;
+            public static readonly Colour4 HYPER_DASH_FRUIT_COLOUR = Colour4.LightCyan;
 
             public TestSkin(bool hasCustomColours)
                 : base(new SkinInfo(), null, null)
diff --git a/osu.Game/Tests/Visual/EditorSavingTestScene.cs b/osu.Game/Tests/Visual/EditorSavingTestScene.cs
index 28bcf05dd07e..b1f0b72c35f0 100644
--- a/osu.Game/Tests/Visual/EditorSavingTestScene.cs
+++ b/osu.Game/Tests/Visual/EditorSavingTestScene.cs
@@ -14,7 +14,6 @@
 using osu.Game.Screens.Edit.Setup;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Select;
-using osuTK.Input;
 
 namespace osu.Game.Tests.Visual
 {
diff --git a/osu.Game/Tests/Visual/Gameplay/ScoringTestScene.cs b/osu.Game/Tests/Visual/Gameplay/ScoringTestScene.cs
index 21d0b8e7a8d1..50df363140bc 100644
--- a/osu.Game/Tests/Visual/Gameplay/ScoringTestScene.cs
+++ b/osu.Game/Tests/Visual/Gameplay/ScoringTestScene.cs
@@ -5,7 +5,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -26,9 +25,8 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring.Legacy;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -267,7 +265,7 @@ private void rescalePlots()
             }
         }
 
-        private void runForProcessor(string name, Color4 colour, ScoringMode scoringMode, BindableBool visibility)
+        private void runForProcessor(string name, Colour4 colour, ScoringMode scoringMode, BindableBool visibility)
         {
             int maxCombo = sliderMaxCombo.Current.Value;
             var beatmap = CreateBeatmap(maxCombo);
@@ -320,7 +318,7 @@ private void runForAlgorithm(ScoringAlgorithmInfo algorithmInfo)
         private class ScoringAlgorithmInfo
         {
             public string Name { get; init; } = null!;
-            public Color4 Colour { get; init; }
+            public Colour4 Colour { get; init; }
             public IScoringAlgorithm Algorithm { get; init; } = null!;
             public BindableBool Visible { get; init; } = null!;
         }
@@ -396,7 +394,7 @@ public GraphContainer(bool supportsNonPerfectJudgements)
                         },
                         hoverLine = new Box
                         {
-                            Colour = Color4.Yellow,
+                            Colour = Colour4.Yellow,
                             RelativeSizeAxes = Axes.Y,
                             Origin = Anchor.TopCentre,
                             Alpha = 0,
@@ -463,7 +461,7 @@ private void updateMissLocations()
                 {
                     missLines.Add(new Box
                     {
-                        Colour = Color4.Red,
+                        Colour = Colour4.Red,
                         Origin = Anchor.TopCentre,
                         Width = 1,
                         RelativeSizeAxes = Axes.Y,
@@ -476,7 +474,7 @@ private void updateMissLocations()
                 {
                     missLines.Add(new Box
                     {
-                        Colour = Color4.Orange,
+                        Colour = Colour4.Orange,
                         Origin = Anchor.TopCentre,
                         Width = 1,
                         RelativeSizeAxes = Axes.Y,
@@ -545,7 +543,7 @@ public GraphTooltip(GraphContainer graphContainer)
                         },
                         textFlow = new OsuTextFlowContainer
                         {
-                            Colour = Color4.White,
+                            Colour = Colour4.White,
                             AutoSizeAxes = Axes.Both,
                             Padding = new MarginPadding(10),
                         }
@@ -577,13 +575,13 @@ public void SetContent(IEnumerable<LineGraph> content)
                     }
                 }
 
-                public void Move(Vector2 pos) => this.MoveTo(pos);
+                public void Move(System.Numerics.Vector2 pos) => this.MoveTo(pos);
             }
         }
 
         private partial class LegendEntry : OsuClickableContainer, IHasAccentColour
         {
-            public Color4 AccentColour { get; set; }
+            public Colour4 AccentColour { get; set; }
 
             public BindableBool Visible { get; } = new BindableBool(true);
 
diff --git a/osu.Game/Tests/Visual/Multiplayer/TestMultiplayerClient.cs b/osu.Game/Tests/Visual/Multiplayer/TestMultiplayerClient.cs
index a4147b3d3e8d..17a00b04dde6 100644
--- a/osu.Game/Tests/Visual/Multiplayer/TestMultiplayerClient.cs
+++ b/osu.Game/Tests/Visual/Multiplayer/TestMultiplayerClient.cs
@@ -734,6 +734,11 @@ private async Task addItem(MultiplayerPlaylistItem item)
 
             item.ID = ++lastPlaylistItemId;
 
+            // Assign a PlaylistOrder that is beyond all existing non-expired items so that
+            // updatePlaylistOrder does not need to re-order items added earlier.
+            int maxOrder = ServerRoom.Playlist.Where(i => !i.Expired).Select(i => (int)i.PlaylistOrder).DefaultIfEmpty(-1).Max();
+            item.PlaylistOrder = (ushort)(maxOrder + 1);
+
             ServerRoom.Playlist.Add(item);
             ServerAPIRoom.Playlist = ServerAPIRoom.Playlist.Append(new PlaylistItem(item)).ToArray();
             await ((IMultiplayerClient)this).PlaylistItemAdded(clone(item)).ConfigureAwait(false);
diff --git a/osu.Game/Tests/Visual/OnlinePlay/TestRoomRequestsHandler.cs b/osu.Game/Tests/Visual/OnlinePlay/TestRoomRequestsHandler.cs
index 8bbc426c5d2f..3894d17627e3 100644
--- a/osu.Game/Tests/Visual/OnlinePlay/TestRoomRequestsHandler.cs
+++ b/osu.Game/Tests/Visual/OnlinePlay/TestRoomRequestsHandler.cs
@@ -11,7 +11,6 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets;
 using osu.Game.Tests.Beatmaps;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Tests.Visual.OnlinePlay
 {
diff --git a/osu.Game/Tests/Visual/OsuGameTestScene.cs b/osu.Game/Tests/Visual/OsuGameTestScene.cs
index f0e8a4da4dab..70fc5663cd5d 100644
--- a/osu.Game/Tests/Visual/OsuGameTestScene.cs
+++ b/osu.Game/Tests/Visual/OsuGameTestScene.cs
@@ -28,7 +28,6 @@
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
 using osu.Game.Screens.Play;
-using osuTK.Graphics;
 using IntroSequence = osu.Game.Configuration.IntroSequence;
 
 namespace osu.Game.Tests.Visual
@@ -52,7 +51,7 @@ private void load()
             Child = new Box
             {
                 RelativeSizeAxes = Axes.Both,
-                Colour = Color4.Black,
+                Colour = Colour4.Black,
             };
         }
 
diff --git a/osu.Game/Tests/Visual/OsuManualInputManagerTestScene.cs b/osu.Game/Tests/Visual/OsuManualInputManagerTestScene.cs
index f8a1cb86a083..8bda28dcbead 100644
--- a/osu.Game/Tests/Visual/OsuManualInputManagerTestScene.cs
+++ b/osu.Game/Tests/Visual/OsuManualInputManagerTestScene.cs
@@ -13,9 +13,8 @@
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
-using osuTK;
-using osuTK.Graphics;
-using osuTK.Input;
+using System.Numerics;
+using osu.Framework.Input;
 
 namespace osu.Game.Tests.Visual
 {
@@ -84,7 +83,7 @@ protected OsuManualInputManagerTestScene()
                     {
                         new Box
                         {
-                            Colour = Color4.Black,
+                            Colour = Colour4.Black,
                             RelativeSizeAxes = Axes.Both,
                             Alpha = 0.4f,
                         },
diff --git a/osu.Game/Tests/Visual/ScreenTestScene.cs b/osu.Game/Tests/Visual/ScreenTestScene.cs
index 3d106bc5b7a6..4da45565c46e 100644
--- a/osu.Game/Tests/Visual/ScreenTestScene.cs
+++ b/osu.Game/Tests/Visual/ScreenTestScene.cs
@@ -10,7 +10,9 @@
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Logging;
 using osu.Framework.Testing;
+using osu.Game.Configuration;
 using osu.Game.Graphics;
+using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
 using osu.Game.Screens;
 using osu.Game.Screens.Footer;
@@ -40,40 +42,52 @@ protected ScreenTestScene()
             ScreenStackFooter screenStackFooter;
             ScreenFooter.BackReceptor backReceptor;
 
-            base.Content.AddRange(new Drawable[]
+            base.Content.Add(new ScalingContainer(ScalingMode.Everything)
             {
-                backReceptor = new ScreenFooter.BackReceptor(),
-                new PopoverContainer
+                Children = new Drawable[]
                 {
-                    RelativeSizeAxes = Axes.Both,
-                    Children = new Drawable[]
+                    backReceptor = new ScreenFooter.BackReceptor(),
+                    new PopoverContainer
                     {
-                        Stack = new OsuScreenStack
+                        RelativeSizeAxes = Axes.Both,
+                        Children = new Drawable[]
                         {
-                            Name = nameof(ScreenTestScene),
-                            RelativeSizeAxes = Axes.Both
-                        },
-                        // TODO: is this ever used? it probably shouldn't be.
-                        content = new Container { RelativeSizeAxes = Axes.Both },
-                        overlayContent = new Container
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Child = DialogOverlay = new DialogOverlay()
-                        },
-                        screenStackFooter = new ScreenStackFooter(Stack, backReceptor)
-                        {
-                            BackButtonPressed = BackButtonPressed,
+                            Stack = new OsuScreenStack
+                            {
+                                Name = nameof(ScreenTestScene),
+                                RelativeSizeAxes = Axes.Both
+                            },
+                            // TODO: is this ever used? it probably shouldn't be.
+                            content = new Container { RelativeSizeAxes = Axes.Both },
+                            overlayContent = new Container
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Child = DialogOverlay = new DialogOverlay()
+                            },
+                            screenStackFooter = new ScreenStackFooter(Stack, backReceptor)
+                            {
+                                BackButtonPressed = BackButtonPressed,
+                            }
                         }
                     }
-                },
+                }
             });
 
             ScreenFooter = screenStackFooter.Footer;
-
             Stack.ScreenPushed += (_, newScreen) => Logger.Log($"{nameof(ScreenTestScene)} screen changed → {newScreen}");
             Stack.ScreenExited += (_, newScreen) => Logger.Log($"{nameof(ScreenTestScene)} screen changed ← {newScreen}");
         }
 
+        [Resolved]
+        private OsuConfigManager config { get; set; } = null!;
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            AddSliderStep("ui scale", 0.8f, 1.6f, 1f, scale => config.SetValue(OsuSetting.UIScale, scale));
+        }
+
         protected virtual void BackButtonPressed() => Stack.Exit();
 
         protected void LoadScreen(OsuScreen screen) => Stack.Push(screen);
diff --git a/osu.Game/Tests/Visual/SkinnableTestScene.cs b/osu.Game/Tests/Visual/SkinnableTestScene.cs
index b0bfeb0719e4..8628996b8518 100644
--- a/osu.Game/Tests/Visual/SkinnableTestScene.cs
+++ b/osu.Game/Tests/Visual/SkinnableTestScene.cs
@@ -22,8 +22,7 @@
 using osu.Game.IO;
 using osu.Game.Rulesets;
 using osu.Game.Skinning;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Tests.Visual
 {
@@ -90,7 +89,7 @@ private Drawable createProvider(Skin skin, Func<ISkin, Drawable> creationFunctio
             var children = new Container
             {
                 RelativeSizeAxes = Axes.Both,
-                BorderColour = Color4.White,
+                BorderColour = Colour4.White,
                 BorderThickness = 3,
                 Masking = true,
 
@@ -182,7 +181,7 @@ private partial class OutlineBox : CompositeDrawable
         {
             public OutlineBox()
             {
-                BorderColour = Color4.IndianRed;
+                BorderColour = Colour4.IndianRed;
                 BorderThickness = 5;
                 Masking = true;
                 RelativeSizeAxes = Axes.Both;
@@ -191,7 +190,7 @@ public OutlineBox()
                 {
                     RelativeSizeAxes = Axes.Both,
                     Alpha = 0,
-                    Colour = Color4.Brown,
+                    Colour = Colour4.Brown,
                     AlwaysPresent = true
                 };
             }
diff --git a/osu.Game/Updater/UpdateManager.cs b/osu.Game/Updater/UpdateManager.cs
index c74adc7ee238..8b5932dd950b 100644
--- a/osu.Game/Updater/UpdateManager.cs
+++ b/osu.Game/Updater/UpdateManager.cs
@@ -19,7 +19,7 @@
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
 using osu.Game.Utils;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Updater
 {
diff --git a/osu.Game/Users/Drawables/ClickableAvatar.cs b/osu.Game/Users/Drawables/ClickableAvatar.cs
index 26622a1f30de..5cb3f9e01c6d 100644
--- a/osu.Game/Users/Drawables/ClickableAvatar.cs
+++ b/osu.Game/Users/Drawables/ClickableAvatar.cs
@@ -12,7 +12,6 @@
 using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
 
 namespace osu.Game.Users.Drawables
 {
@@ -66,6 +65,8 @@ protected override bool OnClick(ClickEvent e)
 
         public partial class UserCardTooltip : VisibilityContainer, ITooltip<APIUser?>
         {
+            private APIUser? user;
+
             public UserCardTooltip()
             {
                 AutoSizeAxes = Axes.Both;
@@ -74,9 +75,7 @@ public UserCardTooltip()
             protected override void PopIn() => this.FadeIn(150, Easing.OutQuint);
             protected override void PopOut() => this.Delay(150).FadeOut(500, Easing.OutQuint);
 
-            public void Move(Vector2 pos) => Position = pos;
-
-            private APIUser? user;
+            public void Move(System.Numerics.Vector2 pos) => Position = pos;
 
             public void SetContent(APIUser? content)
             {
@@ -117,7 +116,7 @@ public NoCardTooltip()
             protected override void PopIn() => tooltip.Show();
             protected override void PopOut() => tooltip.Hide();
 
-            public void Move(Vector2 pos) => Position = pos;
+            public void Move(System.Numerics.Vector2 pos) => Position = pos;
 
             public void SetContent(APIUser? content)
             {
diff --git a/osu.Game/Users/Drawables/StatusIcon.cs b/osu.Game/Users/Drawables/StatusIcon.cs
index 18d06a48f841..cdd7061a83ec 100644
--- a/osu.Game/Users/Drawables/StatusIcon.cs
+++ b/osu.Game/Users/Drawables/StatusIcon.cs
@@ -4,7 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Users.Drawables
 {
diff --git a/osu.Game/Users/UserActivity.cs b/osu.Game/Users/UserActivity.cs
index d9aa772f661f..b31ad1a2b220 100644
--- a/osu.Game/Users/UserActivity.cs
+++ b/osu.Game/Users/UserActivity.cs
@@ -10,7 +10,7 @@
 using osu.Game.Online.Rooms;
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Users
 {
@@ -42,7 +42,7 @@ public abstract class UserActivity
         public abstract string GetStatus(bool hideIdentifiableInformation = false);
         public virtual string? GetDetails(bool hideIdentifiableInformation = false) => null;
 
-        public virtual Color4 GetAppropriateColour(OsuColour colours) => colours.GreenDarker;
+        public virtual Colour4 GetAppropriateColour(OsuColour colours) => colours.GreenDarker;
 
         /// <summary>
         /// Returns the ID of the beatmap involved in this activity, if applicable and/or available.
@@ -190,7 +190,7 @@ public ModdingBeatmap(IBeatmapInfo info)
             public ModdingBeatmap() { }
 
             public override string GetStatus(bool hideIdentifiableInformation = false) => "Modding a beatmap";
-            public override Color4 GetAppropriateColour(OsuColour colours) => colours.PurpleDark;
+            public override Colour4 GetAppropriateColour(OsuColour colours) => colours.PurpleDark;
         }
 
         [MessagePackObject]
diff --git a/osu.Game/Users/UserBrickPanel.cs b/osu.Game/Users/UserBrickPanel.cs
index fff1307e0a95..2cf847800d08 100644
--- a/osu.Game/Users/UserBrickPanel.cs
+++ b/osu.Game/Users/UserBrickPanel.cs
@@ -7,7 +7,7 @@
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK;
+using Vector2 = System.Numerics.Vector2;
 
 namespace osu.Game.Users
 {
diff --git a/osu.Game/Users/UserCoverBackground.cs b/osu.Game/Users/UserCoverBackground.cs
index 4d248d450b81..445ed8b550a3 100644
--- a/osu.Game/Users/UserCoverBackground.cs
+++ b/osu.Game/Users/UserCoverBackground.cs
@@ -3,7 +3,6 @@
 
 using System;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -11,7 +10,6 @@
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Online.API.Requests.Responses;
-using osuTK.Graphics;
 
 namespace osu.Game.Users
 {
@@ -58,7 +56,7 @@ private void load(LargeTextureStore textures)
                     InternalChild = new Box
                     {
                         RelativeSizeAxes = Axes.Both,
-                        Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0.1f), Color4.Black.Opacity(0.75f))
+                        Colour = ColourInfo.GradientVertical(Colour4.Black.Opacity(0.1f), Colour4.Black.Opacity(0.75f))
                     };
                 }
                 else
diff --git a/osu.Game/Users/UserGridPanel.cs b/osu.Game/Users/UserGridPanel.cs
index a2a03f4f26f4..8d6d997def87 100644
--- a/osu.Game/Users/UserGridPanel.cs
+++ b/osu.Game/Users/UserGridPanel.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Users
 {
diff --git a/osu.Game/Users/UserListPanel.cs b/osu.Game/Users/UserListPanel.cs
index 51a1b42d5e38..cb7901f6ecd2 100644
--- a/osu.Game/Users/UserListPanel.cs
+++ b/osu.Game/Users/UserListPanel.cs
@@ -3,14 +3,12 @@
 
 using System.Diagnostics;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays.Profile.Header.Components;
-using osuTK;
-using osuTK.Graphics;
+using System.Numerics;
 
 namespace osu.Game.Users
 {
@@ -32,7 +30,7 @@ private void load()
             Background.Width = 0.5f;
             Background.Origin = Anchor.CentreRight;
             Background.Anchor = Anchor.CentreRight;
-            Background.Colour = ColourInfo.GradientHorizontal(Color4.White.Opacity(1), Color4.White.Opacity(0.3f));
+            Background.Colour = ColourInfo.GradientHorizontal(Colour4.White.Opacity(1), Colour4.White.Opacity(0.3f));
         }
 
         protected override Drawable CreateLayout()
diff --git a/osu.Game/Users/UserPanel.cs b/osu.Game/Users/UserPanel.cs
index 81f38b27ef41..ce03ebc66f91 100644
--- a/osu.Game/Users/UserPanel.cs
+++ b/osu.Game/Users/UserPanel.cs
@@ -29,7 +29,7 @@
 using osu.Game.Screens.OnlinePlay.Matchmaking.Queue;
 using osu.Game.Screens.Play;
 using osu.Game.Users.Drawables;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Users
 {
diff --git a/osu.Game/Users/UserRankPanel.cs b/osu.Game/Users/UserRankPanel.cs
index 75018732faf0..73ea08da9074 100644
--- a/osu.Game/Users/UserRankPanel.cs
+++ b/osu.Game/Users/UserRankPanel.cs
@@ -14,7 +14,7 @@
 using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Users
 {
diff --git a/osu.Game/Users/UserStatus.cs b/osu.Game/Users/UserStatus.cs
index 8da3f03e38c9..d520dfd39b4c 100644
--- a/osu.Game/Users/UserStatus.cs
+++ b/osu.Game/Users/UserStatus.cs
@@ -6,7 +6,7 @@
 using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Resources.Localisation.Web;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Users
 {
@@ -24,12 +24,12 @@ public enum UserStatus
 
     public static class UserStatusExtensions
     {
-        public static Color4 GetAppropriateColour(this UserStatus userStatus, OsuColour colours)
+        public static Colour4 GetAppropriateColour(this UserStatus userStatus, OsuColour colours)
         {
             switch (userStatus)
             {
                 case UserStatus.Offline:
-                    return Color4.Black;
+                    return Colour4.Black;
 
                 case UserStatus.DoNotDisturb:
                     return colours.RedDark;
diff --git a/osu.Game/Utils/ColourUtils.cs b/osu.Game/Utils/ColourUtils.cs
index 515963971d6f..2319633f7164 100644
--- a/osu.Game/Utils/ColourUtils.cs
+++ b/osu.Game/Utils/ColourUtils.cs
@@ -3,7 +3,7 @@
 
 using System.Collections.Generic;
 using osu.Framework.Utils;
-using osuTK.Graphics;
+using osu.Framework.Graphics;
 
 namespace osu.Game.Utils
 {
@@ -14,8 +14,8 @@ public static class ColourUtils
         /// </summary>
         /// <param name="gradient">The gradient, defining the colour stops and their positions (in [0-1] range) in the gradient.</param>
         /// <param name="point">The point to sample the colour at.</param>
-        /// <returns>A <see cref="Color4"/> sampled from the linear gradient.</returns>
-        public static Color4 SampleFromLinearGradient(IReadOnlyList<(float position, Color4 colour)> gradient, float point)
+        /// <returns>A <see cref="Colour4"/> sampled from the linear gradient.</returns>
+        public static Colour4 SampleFromLinearGradient(IReadOnlyList<(float position, Colour4 colour)> gradient, float point)
         {
             if (point < gradient[0].position)
                 return gradient[0].colour;
diff --git a/osu.Game/Utils/GeometryUtils.cs b/osu.Game/Utils/GeometryUtils.cs
index 185b1cc4f1d1..ce5021423011 100644
--- a/osu.Game/Utils/GeometryUtils.cs
+++ b/osu.Game/Utils/GeometryUtils.cs
@@ -8,7 +8,7 @@
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Objects.Types;
-using osuTK;
+using System.Numerics;
 
 namespace osu.Game.Utils
 {
@@ -131,8 +131,8 @@ public static Quad GetSurroundingQuad(IEnumerable<Vector2> points)
             // Go through all hitobjects to make sure they would remain in the bounds of the editor after movement, before any movement is attempted
             foreach (var p in points)
             {
-                minPosition = Vector2.ComponentMin(minPosition, p);
-                maxPosition = Vector2.ComponentMax(maxPosition, p);
+                minPosition = Vector2.Min(minPosition, p);
+                maxPosition = Vector2.Max(maxPosition, p);
             }
 
             Vector2 size = maxPosition - minPosition;
@@ -248,9 +248,9 @@ private static (Vector2, float) circleFrom(Vector2 a, Vector2 b, Vector2 c)
 
             // See: https://en.wikipedia.org/wiki/Circumcircle#Cartesian_coordinates
             float d = 2 * (a.X * (b - c).Y + b.X * (c - a).Y + c.X * (a - b).Y);
-            float aSq = a.LengthSquared;
-            float bSq = b.LengthSquared;
-            float cSq = c.LengthSquared;
+            float aSq = a.LengthSquared();
+            float bSq = b.LengthSquared();
+            float cSq = c.LengthSquared();
 
             var centre = new Vector2(
                 aSq * (b - c).Y + bSq * (c - a).Y + cSq * (a - b).Y,
diff --git a/osu.Game/Utils/LegacyUtils.cs b/osu.Game/Utils/LegacyUtils.cs
index 64306adf50fc..be65837cce45 100644
--- a/osu.Game/Utils/LegacyUtils.cs
+++ b/osu.Game/Utils/LegacyUtils.cs
@@ -4,40 +4,14 @@
 using System;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Transforms;
-using osuTK.Graphics;
 
 namespace osu.Game.Utils
 {
     public static class LegacyUtils
     {
-        public static Color4 InterpolateNonLinear(double time, Color4 startColour, Color4 endColour, double startTime, double endTime, Easing easing = Easing.None)
-            => InterpolateNonLinear(time, startColour, endColour, startTime, endTime, new DefaultEasingFunction(easing));
-
         public static Colour4 InterpolateNonLinear(double time, Colour4 startColour, Colour4 endColour, double startTime, double endTime, Easing easing = Easing.None)
             => InterpolateNonLinear(time, startColour, endColour, startTime, endTime, new DefaultEasingFunction(easing));
 
-        /// <summary>
-        /// Interpolates between two sRGB <see cref="Color4"/>s directly in sRGB space.
-        /// </summary>
-        public static Color4 InterpolateNonLinear<TEasing>(double time, Color4 startColour, Color4 endColour, double startTime, double endTime, TEasing easing) where TEasing : IEasingFunction
-        {
-            if (startColour == endColour)
-                return startColour;
-
-            double current = time - startTime;
-            double duration = endTime - startTime;
-
-            if (duration == 0 || current == 0)
-                return startColour;
-
-            float t = Math.Max(0, Math.Min(1, (float)easing.ApplyEasing(current / duration)));
-
-            return new Color4(
-                startColour.R + t * (endColour.R - startColour.R),
-                startColour.G + t * (endColour.G - startColour.G),
-                startColour.B + t * (endColour.B - startColour.B),
-                startColour.A + t * (endColour.A - startColour.A));
-        }
 
         /// <summary>
         /// Interpolates between two sRGB <see cref="Colour4"/>s directly in sRGB space.
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index 62e6b980431f..349b0fa86ef4 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup Label="Project">
     <TargetFramework>net10.0</TargetFramework>
     <OutputType>Library</OutputType>
@@ -38,10 +38,10 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Realm" Version="20.1.0" />
-    <PackageReference Include="ppy.osu.Framework" Version="2026.511.1" />
+    <PackageReference Include="ppy.osu.Framework" Version="2026.517.1" />
     <!--
       Explicitly pin `ppy.Veldrid.SPIRV` to the winnerspiros fork build that
-      `ppy.osu.Framework 2026.511.1` was compiled against. This version is the only
+      `ppy.osu.Framework 2026.517.1` was compiled against. This version is the only
       one whose `runtimes/android-arm64/native/libveldrid-spirv.so` is aligned to 16 KB
       pages (required by Android 16+). It lives only as a release asset on
       <https://github.com/winnerspiros/veldrid-spirv/releases/tag/1.0> and is vendored
diff --git a/osu.iOS.props b/osu.iOS.props
index 096c0be80e6d..0daf92271a71 100644
--- a/osu.iOS.props
+++ b/osu.iOS.props
@@ -1,4 +1,4 @@
-<Project>
+<Project>
   <PropertyGroup>
     <CodesignKey>iPhone Developer</CodesignKey>
     <NullabilityInfoContextSupport>true</NullabilityInfoContextSupport>
@@ -33,6 +33,6 @@
     <SuppressTrimAnalysisWarnings>true</SuppressTrimAnalysisWarnings>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.iOS" Version="2026.511.1" />
+    <PackageReference Include="ppy.osu.Framework.iOS" Version="2026.517.1" />
   </ItemGroup>
 </Project>
diff --git a/osu.iOS/OsuGameIOS.cs b/osu.iOS/OsuGameIOS.cs
index e240ea63202a..665859053c0d 100644
--- a/osu.iOS/OsuGameIOS.cs
+++ b/osu.iOS/OsuGameIOS.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Numerics;
 using Foundation;
 using Microsoft.Maui.Devices;
 using osu.Framework.Graphics;
@@ -11,7 +12,6 @@
 using osu.Game.Screens;
 using osu.Game.Updater;
 using osu.Game.Utils;
-using osuTK;
 using UIKit;
 
 namespace osu.iOS