An open-source isometric AI office simulator you can play right in your browser.
Build your startup from a tiny studio to a tech empire. No install, no sign-up, no paywall.
Play Now · Discord · GitHub · Report Bug
Business Tycoon is a free, browser-based tycoon game where you run an AI startup. You start with a small office and a dream — hire AI agents, assign them to projects, research new tech, manage your finances, and grow your company level by level.
Everything runs client-side. No server, no database, no accounts. Just open the link and play.
- Build your office — Place rooms, corridors, and furniture in an isometric office builder. Expand as you grow.
- Hire AI agents — Each agent has unique skills, a personality, and mood that affects their work. Keep them happy.
- Take on projects — Accept client projects that match your team's skills. Deliver on time to build your reputation.
- Research & unlock — Progress through a tech tree to unlock new room types, better equipment, and company perks.
- Manage your economy — Track MRR, handle cash flow, take loans, and navigate market events like booms and crashes.
- Random events — VC offers, office disasters, market shifts — adapt your strategy on the fly.
- AI CEO advisor — Get strategic advice from an AI-powered advisor (optional, uses external API).
- Installable PWA — Works offline after first load. Install it on your phone or desktop.
tycoon.teamday.ai — click and play, nothing to install.
Clone the repo and serve the files with any static HTTP server:
git clone https://github.com/TeamDay-AI/business-tycoon.git
cd business-tycoon
# Pick one:
python3 -m http.server 8000
# or
npx serve .Open http://localhost:8000 and you're in.
No build step. No bundler. No dependencies. It's vanilla JavaScript with ES modules loaded directly by the browser.
business-tycoon/
├── index.html # Entry point — everything starts here
├── sw.js # Service worker (offline/PWA support)
├── manifest.json # PWA manifest
├── src/
│ ├── main.js # Bootstrap & game loop
│ ├── game.js # Global game state (the G singleton)
│ ├── engine.js # Canvas, camera, input handling
│ ├── config.js # All game balance, catalogs, and constants
│ ├── simulation.js # Per-tick simulation (daily/weekly cycles)
│ ├── economy.js # Revenue, costs, valuation, client pipeline
│ ├── progression.js # Levels, tech tree, company stages
│ ├── events.js # Random events (VC offers, disasters, etc.)
│ ├── agent.js # AI agent behavior, skills, mood, pathfinding
│ ├── visitor.js # Office visitor NPCs
│ ├── project.js # Project creation & management
│ ├── recruitment.js # Hiring system & candidate generation
│ ├── map.js # Room placement, corridors, doors
│ ├── floorplan.js # Office layouts & expansion zones
│ ├── build-mode.js # Construction UI (drag-to-build)
│ ├── rotation.js # Furniture/room rotation
│ ├── pathfinding.js # A* grid pathfinding
│ ├── audio.js # Background music
│ ├── sfx.js # Procedural sound effects (Web Audio API)
│ ├── ai-ceo.js # AI CEO advisor (external API)
│ ├── renderer/ # Isometric rendering layers
│ │ ├── index.js # Render orchestrator & depth sorting
│ │ ├── floor.js # Floor tiles
│ │ ├── walls.js # Wall rendering
│ │ ├── furniture.js # Office furniture
│ │ ├── agents.js # Agent sprites
│ │ ├── effects.js # Visual effects
│ │ ├── minimap.js # Minimap overlay
│ │ └── primitives.js # Shared isometric drawing helpers
│ └── ui/ # UI panels & overlays
│ ├── panels.js # Main panels (agent details, projects, company)
│ ├── build-panel.js # Construction mode panel
│ ├── equipment-panel.js
│ ├── hud-popover.js # HUD tooltips
│ ├── speed.js # Game speed controls
│ ├── toast.js # Notification toasts
│ ├── intro.js # Onboarding & level intros
│ ├── cashflow-graph.js
│ ├── floating-chart.js
│ ├── analytics-panel.js
│ ├── strategy-panel.js
│ └── loan.js # Loan/debt management
├── assets/
│ ├── *.mp3 # Background music tracks
│ └── team/ # Agent avatar images (.webp)
└── og-image.jpg # Social sharing image
We'd love your help! Business Tycoon is fully open source under the MIT license. Join the Discord community to chat with other contributors.
- Report bugs — Open an issue with steps to reproduce
- Suggest features — Have an idea? Open an issue and describe what you'd like to see
- Submit a PR — Fork the repo, make your changes, and open a pull request
- Improve game balance — Tweak numbers in
src/config.jsand share what feels better - Add content — New events, room types, furniture, agent personalities, tech tree nodes
- Fix typos & polish — Every little improvement counts
- Fork the repository
- Clone your fork locally
- Create a branch for your change (
git checkout -b my-feature) - Make your changes — no build step needed, just edit and refresh
- Test by running a local server and playing the game
- Commit and push to your fork
- Open a pull request against
main
Since there's no build step or test suite, just make sure the game loads and runs without console errors.
- Add new random events in
src/events.js - Create new office furniture definitions in
src/config.js - Improve agent pathfinding in
src/pathfinding.js - Add keyboard shortcuts for common actions
- Improve mobile/touch support
- Add new background music tracks
- Localization / i18n support
| What | How |
|---|---|
| Language | Vanilla JavaScript (ES modules) |
| Rendering | HTML5 Canvas 2D, isometric projection |
| Audio | Web Audio API (procedural SFX) + MP3 (music) |
| UI | Mix of canvas-drawn elements + DOM overlays |
| Offline | Service Worker + PWA manifest |
| Build | None. Zero dependencies. |
| Hosting | Any static file server |
MIT — do whatever you want with it. Fork it, mod it, learn from it, ship it.
- Discord — chat, share ideas, get help
- GitHub Issues — bugs & feature requests
- TeamDay.ai — the team behind the game