Become a sponsor to Endel Dreyer

Hi, I'm Endel 👋. I wrote the first line of Colyseus in November 2015. Since 2022 it's been my full-time job.

Colyseus is not just a Node.js app: it is the authoritative multiplayer framework, the schema-based state serializer, and the client SDKs. The SDKs cover TypeScript, Unity, Godot, Defold, GameMaker, Construct 3, MonoGame, Haxe, Flutter, Native C, and a few more. I write the docs at docs.colyseus.io and build the demos too.

Most of the work is keeping every SDK updated for each server release. That work is invisible until one of them falls behind.

What your sponsorship pays for

Colyseus is MIT licensed and self-hostable, and it will stay that way. There's no paid plan and no gated features. Sponsorship is what pays for my time: SDK parity across engines, the documentation, the demos, and fast answers to issues and bug reports.

Premium demos, for every sponsor

Five complete prototypes, each running the whole stack at once: authoritative server, client prediction, smoothed remotes, and lag compensation.

• Air Hockey 🏒: everything is predicted, including the puck, the hits, and the goals. Three.js, Godot and Unity clients.
• FPS 🔫: a first-person shooter with server-validated hitscan and lag compensation.
• MOBA ⚔️: three lanes on a deterministic shared simulation, with 5v5 bot matches and server-side fog of war.
• Platformer 🍄: a prediction harness with rideable moving platforms, plus stomps and dashes that survive lag.
• Karts 🏎️: hold-to-drift mini-turbos, dead-reckoned rockets, and rewind-based hit checks.

All five are free to play in your browser. The source repositories are private, and every monthly sponsor gets access to all of them, at any tier. The set keeps growing: new prototypes, and more engine ports of the existing ones.

Support

If your company ships on Colyseus, the upper tiers add direct support: priority on bug fixes, email, then a shared channel and calls. Each tier lists exactly what it includes.

Sponsorship is separate from Colyseus Cloud. Cloud is managed hosting and has its own billing. Sponsorship funds the open-source framework itself.

Not ready for a monthly commitment?

You can also make a one-time donation, or show off your support by purchasing merch from the Colyseus Shop 💖 - T-shirts, hoodies, hats, mugs, and stickers, shipped worldwide. Every order funds the project, and you get to look cool while doing it. 😎