An open source game engine and platform for creating, sharing, and competing on custom maps.
High-performance C++ engine built on Vulkan, flecs ECS, and Jolt physics. Runs maps natively on desktop.
Collaborative 3D map editor in the browser. Build maps together in real-time with Three.js and Yjs.
Create and join tournaments on community maps. Matchmaking, leaderboards, and competitive play built in.
Engine, editor, API, and desktop app are all open source. Fork, contribute, or build on top of the platform.
The ctx.gg platform connects a native game engine, browser-based editor, and backend API.
Tauri desktop client
Browser-based 3D editor
Hono + PostgreSQL
Vulkan · flecs ECS · Jolt
Maps, users, tournaments
Jump into the docs, explore the source, or start building maps in the editor.