spawnforge

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