Web Browser Game Development
Framework selection and browser-specific principles.
1. Framework Selection
Decision Tree
What type of game?
│
├── 2D Game
│ ├── Full game engine features? → Phaser
│ └── Raw rendering power? → PixiJS
│
├── 3D Game
│ ├── Full engine (physics, XR)? → Babylon.js
│ └── Rendering focused? → Three.js
│
└── Hybrid / Canvas
└── Custom → Raw Canvas/WebGL
Comparison (2025)
| Framework |
Type |
Best For |
| Phaser 4 |
2D |
Full game features |
| PixiJS 8 |
2D |
Rendering, UI |
| Three.js |
3D |
Visualizations, lightweight |
| Babylon.js 7 |
3D |
Full engine, XR |
2. WebGPU Adoption
Browser Support (2025)
| Browser |
Support |
| Chrome |
✅ Since v113 |
| Edge |
✅ Since v113 |
| Firefox |
✅ Since v131 |
| Safari |
✅ Since 18.0 |
| Total |
~73% global |
Decision
-
New projects: Use WebGPU with WebGL fallback
-
Legacy support: Start with WebGL
-
Feature detection: Check
navigator.gpu
3. Performance Principles
Browser Constraints
| Constraint |
Strategy |
| No local file access |
Asset bundling, CDN |
| Tab throttling |
Pause when hidden |
| Mobile data limits |
Compress assets |
| Audio autoplay |
Require user interaction |
Optimization Priority
-
Asset compression - KTX2, Draco, WebP
-
Lazy loading - Load on demand
-
Object pooling - Avoid GC
-
Draw call batching - Reduce state changes
-
Web Workers - Offload heavy computation
4. Asset Strategy
Compression Formats
| Type |
Format |
| Textures |
KTX2 + Basis Universal |
| Audio |
WebM/Opus (fallback: MP3) |
| 3D Models |
glTF + Draco/Meshopt |
Loading Strategy
| Phase |
Load |
| Startup |
Core assets, <2MB |
| Gameplay |
Stream on demand |
| Background |
Prefetch next level |
5. PWA for Games
Benefits
- Offline play
- Install to home screen
- Full screen mode
- Push notifications
Requirements
- Service worker for caching
- Web app manifest
- HTTPS
6. Audio Handling
Browser Requirements
- Audio context requires user interaction
- Create AudioContext on first click/tap
- Resume context if suspended
Best Practices
- Use Web Audio API
- Pool audio sources
- Preload common sounds
- Compress with WebM/Opus
7. Anti-Patterns
| ❌ Don't |
✅ Do |
| Load all assets upfront |
Progressive loading |
| Ignore tab visibility |
Pause when hidden |
| Block on audio load |
Lazy load audio |
| Skip compression |
Compress everything |
| Assume fast connection |
Handle slow networks |
Remember: Browser is the most accessible platform. Respect its constraints.
When to Use
This skill is applicable to execute the workflow or actions described in the overview.
Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
