diff --git a/Gemfile b/Gemfile
index 63415039..a79efc62 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,10 @@ source 'https://rubygems.org'
 ruby '3.0.2'
 
 gem 'sinatra'
+gem 'puma'
+gem 'thin'
+gem 'falcon'
+gem 'webrick'
 
 group :test do
   gem 'capybara'
diff --git a/app.rb b/app.rb
index 4abb71ec..077b17a2 100644
--- a/app.rb
+++ b/app.rb
@@ -1,8 +1,37 @@
-require 'sinatra/base'
+require "sinatra/base"
+require_relative "./lib/game"
+
 class RockPaperScissors < Sinatra::Base
+  enable :sessions
+
   get '/test' do
     'test page'
   end
 
+  get "/" do
+    erb(:index)
+  end
+
+  post "/welcome" do
+    session[:player_name] = params[:player_name]
+    redirect to("/play")
+  end
+
+  get "/play" do
+    @player_name = session[:player_name]
+    erb(:play)
+  end
+
+  post "/selection" do
+    $game = Game.new(params[:weapon])
+    redirect to("/result")
+  end
+
+  get "/result" do
+    $game.play
+    erb(:result)
+  end
+  
+
   run! if app_file == $0
 end
diff --git a/lib/game.rb b/lib/game.rb
new file mode 100644
index 00000000..dd6052de
--- /dev/null
+++ b/lib/game.rb
@@ -0,0 +1,45 @@
+require_relative "./rock"
+require_relative "./paper"
+require_relative "./scissors"
+
+class Game
+  attr_reader :weapon, :opponent
+
+  def initialize(player_selection)
+    @player_selection = player_selection
+    @weapon = select_weapon
+    @opponent = random_weapon
+  end
+
+  def play
+    @weapon.challenge(@opponent)
+  end
+
+  def result
+    if @weapon.winner == true
+      "You won!"
+    elsif @weapon.loser == true
+      "You lost!"
+    elsif @weapon.draw == true
+      "You drew!"
+    end
+  end
+
+  private
+
+  def select_weapon
+    case @player_selection
+    when "Rock"
+      Rock.new
+    when "Paper"
+      Paper.new
+    when "Scissors"
+      Scissors.new
+    end
+  end
+
+  def random_weapon
+    ["Rock", "Paper", "Scissors"].sample
+  end
+
+end
diff --git a/lib/paper.rb b/lib/paper.rb
new file mode 100644
index 00000000..834261f9
--- /dev/null
+++ b/lib/paper.rb
@@ -0,0 +1,22 @@
+require_relative "./weapon"
+
+class Paper < Weapon
+
+  def name
+    "Paper"
+  end
+
+private
+
+  def generate_result(opponent)
+    case opponent
+    when "Rock"
+      @winner = true
+    when "Paper"
+      @draw = true
+    when "Scissors"
+      @loser = true
+    end
+  end
+
+end
diff --git a/lib/rock.rb b/lib/rock.rb
new file mode 100644
index 00000000..432cf8c9
--- /dev/null
+++ b/lib/rock.rb
@@ -0,0 +1,22 @@
+require_relative "./weapon"
+
+class Rock < Weapon
+
+  def name
+    "Rock"
+  end
+
+private
+
+  def generate_result(opponent)
+    case opponent
+    when "Rock"
+      @draw = true
+    when "Paper"
+      @loser = true
+    when "Scissors"
+      @winner = true
+    end
+  end
+
+end
diff --git a/lib/scissors.rb b/lib/scissors.rb
new file mode 100644
index 00000000..3313ab90
--- /dev/null
+++ b/lib/scissors.rb
@@ -0,0 +1,22 @@
+require_relative "./weapon"
+
+class Scissors < Weapon
+
+  def name
+    "Scissors"
+  end
+
+private
+
+  def generate_result(opponent)
+    case opponent
+    when "Rock"
+      @loser = true
+    when "Paper"
+      @winner = true
+    when "Scissors"
+      @draw = true
+    end
+  end
+
+end
diff --git a/lib/weapon.rb b/lib/weapon.rb
new file mode 100644
index 00000000..f9330cc0
--- /dev/null
+++ b/lib/weapon.rb
@@ -0,0 +1,14 @@
+class Weapon
+  attr_reader :winner, :loser, :draw
+
+  def initialize
+    @winner = false
+    @loser = false
+    @draw = false
+  end
+
+  def challenge(opponent)
+    generate_result(opponent)
+  end
+
+end
diff --git a/spec/features/enter_name_spec.rb b/spec/features/enter_name_spec.rb
new file mode 100644
index 00000000..ef8e78c8
--- /dev/null
+++ b/spec/features/enter_name_spec.rb
@@ -0,0 +1,6 @@
+feature "Enter name" do
+  scenario "Player can enter and see their name" do
+    sign_in_and_play
+    expect(page).to have_content("Welcome, Ian!")
+  end
+end
diff --git a/spec/features/weapon_selection_spec.rb b/spec/features/weapon_selection_spec.rb
new file mode 100644
index 00000000..ccc03d06
--- /dev/null
+++ b/spec/features/weapon_selection_spec.rb
@@ -0,0 +1,8 @@
+feature "Weapon selection" do
+  scenario "Player can select a weapon" do
+    sign_in_and_play
+    choose("Paper")
+    click_on("Submit")
+    expect(page).to have_content("You chose Paper")
+  end
+end
diff --git a/spec/features/web_helpers.rb b/spec/features/web_helpers.rb
new file mode 100644
index 00000000..b20cdb43
--- /dev/null
+++ b/spec/features/web_helpers.rb
@@ -0,0 +1,5 @@
+def sign_in_and_play
+  visit "/"
+  fill_in(:player_name, with: "Ian")
+  click_button("Submit")
+end
diff --git a/spec/game_spec.rb b/spec/game_spec.rb
new file mode 100644
index 00000000..d09ef964
--- /dev/null
+++ b/spec/game_spec.rb
@@ -0,0 +1,20 @@
+require "game"
+
+describe Game do
+  subject(:game) { Game.new("Rock") }
+  let(:weapon) { double(:weapon, winner: false, loser: false, draw: false) }
+
+  describe "#weapon" do
+    it "returns the user's chosen weapon" do
+      expect(game.weapon).to be_an_instance_of(Rock)
+    end
+  end
+
+  describe "#opponent" do
+    it "returns the opponent's weapon" do
+      weapons = ["Rock", "Paper", "Scissors"]
+      expect(weapons).to include(game.opponent)
+    end
+  end
+
+end
diff --git a/spec/paper_spec.rb b/spec/paper_spec.rb
new file mode 100644
index 00000000..adff179d
--- /dev/null
+++ b/spec/paper_spec.rb
@@ -0,0 +1,23 @@
+require "paper"
+
+describe Paper do
+  subject(:paper) { Paper.new }
+
+  describe "#name" do
+    it "returns the weapon name" do
+      expect(paper.name).to eq("Paper")
+    end
+  end
+
+  describe "#challenge" do
+    it "accepts an opponent and generates a result" do
+      paper.challenge("Rock")
+      expect(paper.winner).to eq(true)
+      paper.challenge("Paper")
+      expect(paper.draw).to eq(true)
+      paper.challenge("Scissors")
+      expect(paper.loser).to eq(true)
+    end
+  end
+
+end
\ No newline at end of file
diff --git a/spec/rock_spec.rb b/spec/rock_spec.rb
new file mode 100644
index 00000000..cce768a0
--- /dev/null
+++ b/spec/rock_spec.rb
@@ -0,0 +1,22 @@
+require "rock"
+
+describe Rock do
+  subject(:rock) { Rock.new }
+
+  describe "#name" do
+    it "returns the weapon name" do
+      expect(rock.name).to eq("Rock")
+    end
+  end
+
+  describe "#challenge" do
+    it "accepts an opponent and generates a result" do
+      rock.challenge("Rock")
+      expect(rock.draw).to eq(true)
+      rock.challenge("Paper")
+      expect(rock.loser).to eq(true)
+      rock.challenge("Scissors")
+      expect(rock.winner).to eq(true)
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/scissors_spec.rb b/spec/scissors_spec.rb
new file mode 100644
index 00000000..4c6d933c
--- /dev/null
+++ b/spec/scissors_spec.rb
@@ -0,0 +1,23 @@
+require "scissors"
+
+describe Scissors do
+  subject(:scissors) { Scissors.new }
+
+  describe "#name" do
+    it "returns the weapon name" do
+      expect(scissors.name).to eq("Scissors")
+    end
+  end
+
+  describe "#challenge" do
+    it "accepts an opponent and generates a result" do
+      scissors.challenge("Rock")
+      expect(scissors.loser).to eq(true)
+      scissors.challenge("Paper")
+      expect(scissors.winner).to eq(true)
+      scissors.challenge("Scissors")
+      expect(scissors.draw).to eq(true)
+    end
+  end
+
+end
\ No newline at end of file
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 2177ec6a..7cf1241f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,7 @@
 require 'capybara/rspec'
 require 'simplecov'
 require 'simplecov-console'
+require_relative "./features/web_helpers"
 
 SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new([
   SimpleCov::Formatter::Console,
diff --git a/spec/weapon_spec.rb b/spec/weapon_spec.rb
new file mode 100644
index 00000000..ba1c166c
--- /dev/null
+++ b/spec/weapon_spec.rb
@@ -0,0 +1,23 @@
+require "weapon"
+
+describe Weapon do
+  subject(:weapon) { Weapon.new }
+
+  describe "#winner" do
+    it "is initialized as false" do
+      expect(weapon.winner).to eq(false)
+    end
+  end
+
+  describe "#loser" do
+    it "is initialized as false" do
+      expect(weapon.loser).to eq(false)
+    end
+  end
+
+  describe "#draw" do
+    it "is initialized as false" do
+      expect(weapon.draw).to eq(false)
+    end
+  end
+end
diff --git a/views/index.erb b/views/index.erb
new file mode 100644
index 00000000..93d69915
--- /dev/null
+++ b/views/index.erb
@@ -0,0 +1,9 @@
+<h1>Rock, Paper, Scissors</h1>
+<h2>Sign in to play</h2>
+<form action="/welcome" method=post>
+  <label for="player_name">
+    Your name:
+    <input type=text name="player_name">
+  </label>
+  <input type=submit value="Submit">
+</form>
\ No newline at end of file
diff --git a/views/play.erb b/views/play.erb
new file mode 100644
index 00000000..d7e41373
--- /dev/null
+++ b/views/play.erb
@@ -0,0 +1,11 @@
+<h1>Welcome, <%= @player_name %>!</h1>
+<form action="/selection" method=post>
+  <p>Choose your weapon:</p>
+  <input type=radio id="rock" name="weapon" value="Rock">
+  <label for="rock">Rock</label><br>
+  <input type=radio id="paper" name="weapon" value="Paper">
+  <label for="paper">Paper</label><br>
+  <input type=radio id="scissors" name="weapon" value="Scissors">
+  <label for="scissors">Scissors</label><br><br>
+  <input type=submit value="Submit">
+</form>
diff --git a/views/result.erb b/views/result.erb
new file mode 100644
index 00000000..86eca50c
--- /dev/null
+++ b/views/result.erb
@@ -0,0 +1,3 @@
+You chose <%= $game.weapon.name %>.
+The computer chose <%= $game.opponent %>.
+<%= $game.result %>
\ No newline at end of file