Game development has traditionally required downloading large IDEs, learning complex programming languages, and wrestling with build pipelines. SpawnForge takes a different approach: everything happens in your browser.

What is SpawnForge?

SpawnForge is an AI-native 2D/3D game engine built for the browser. It combines a Bevy-based Rust/WebAssembly rendering engine with a React visual editor and 351 MCP (Model Context Protocol) commands. You can create games through natural language descriptions, visual scripting, or traditional code.

Browser-Native Architecture

Under the hood, SpawnForge uses WebGPU for primary rendering with automatic WebGL2 fallback for older browsers. The engine is written in Rust and compiled to WebAssembly, giving near-native performance without plugins or downloads. The editor shell is built with Next.js and React, providing a modern, responsive interface.

This architecture means there is zero setup friction. Open a URL, start creating. Your first entity can exist in under 30 seconds.

AI-First Design

SpawnForge was built with AI integration from day one, not bolted on afterward. Every engine operation is a JSON command through a single handle_command() entry point. This means the visual editor and AI agents use the exact same API — there is no separate “AI mode.”

The built-in chat panel lets you describe what you want in plain language. The AI executes compound actions — spawning entities, configuring materials, writing scripts — iterating across multiple turns until the scene matches your description. 25+ AI modules handle everything from scene generation to asset creation.

351 MCP Commands

The Model Context Protocol (MCP) server exposes 351 commands across 41 categories. Any MCP-compatible agent or LLM can create scenes, configure physics, write game scripts, and export finished games — all without touching the UI.

Categories span the full engine: transforms, materials, physics, audio, animation, particles, tilemaps, scripting, game components, and more. The commands are documented at docs.spawnforge.ai/mcp.

Visual Scripting

For creators who prefer a visual approach, SpawnForge includes a React Flow-based node graph editor with 73 node types across 10 categories. Non-programmers create game logic by connecting visual blocks, which compile to TypeScript. The visual scripting system covers variables, conditions, loops, events, physics interactions, and more.

Full Engine Capabilities

SpawnForge is not a toy or a prototyping tool. The engine includes:

PBR materials with 56 presets across 9 categories
2D and 3D physics powered by Rapier
Spatial audio with bus mixing, reverb zones, and adaptive music
GPU particle effects with 9 presets
Skeletal animation, keyframe animation, and glTF import
CSG boolean operations and procedural terrain
Tilemap editor for 2D games
TypeScript scripting sandbox with 14+ API namespaces

Publish Instantly

One click publishes your game to a shareable URL on spawnforge.ai. Players load and play directly in the browser. You can also export as a standalone ZIP with PWA support for platforms like itch.io.

Getting Started

SpawnForge offers a free tier with no credit card required. Sign up, open the editor, and start building. The Starter bundle system provides 11 pre-configured game skeletons (Platformer, Shooter, Runner, Puzzle, and more) to get you building in seconds.