SpawnForge
SpawnForge is an open-source, AI-native 2D/3D game engine that runs entirely in the browser. It combines a Bevy-based Rust/WebAssembly rendering engine with a React visual editor and 350 MCP commands, enabling game creation through natural language, visual scripting, or manual editing. Games are built, tested, and published without leaving the browser — no install, no compile step, no deployment pipeline.
Status
Why SpawnForge
- Browser-native — No download, no IDE setup. Open a URL and start building 2D or 3D games.
- AI-first — 25+ AI modules and 350 MCP commands let LLMs and agents drive the full editor. Describe a scene in plain text and watch it materialize.
- Real engine — Bevy ECS compiled to WebAssembly, WebGPU rendering (WebGL2 fallback), Rapier physics, spatial audio, GPU particles, skeletal animation. Not a toy.
- One command interface — The visual editor, AI chat, and external MCP agents all call the same
handle_command() JSON API. There is no separate "AI mode."
- Publish instantly — One-click publish to a shareable URL. Export as a standalone ZIP with PWA support.
Key Statistics
| Metric | Value |
|---|
| MCP commands | 350 across 41 categories |
| Visual scripting nodes | 73 across 10 categories |
| Material presets | 56 across 9 categories |
| AI modules | 25+ (chat, generation, asset creation) |
| Game components | 12 drag-and-drop behaviors |
| Test suite | 14,200+ tests |
| Rendering | WebGPU primary, WebGL2 fallback |
| Engine | Bevy 0.18, Rust/WASM |
An open-source, AI-native 2D/3D game engine for the browser. Every capability — scene creation, materials, physics, scripting, audio, particles, tilemaps, animation, export — is exposed as a JSON command, making the entire editor fully controllable by LLMs and autonomous agents via the Model Context Protocol. Build games by conversation, by code, or by hand.
Powered by WebGPU (with WebGL2 fallback), Rust compiled to WebAssembly, and a React-based visual editor.
Project Sites
| Site | URL | Description |
|---|
| Editor | spawnforge.localhost:1355 (dev) | Main SpawnForge editor and platform |
| MCP & API Docs | docs.spawnforge.ai | Public MCP command reference and API documentation |
| Design System | design.spawnforge.ai | Storybook component library and design tokens |
Features