Colyseus
Open-source multiplayer framework for Node.js with matchmaking and state sync
About
Colyseus is an open-source framework for real-time multiplayer on Node.js. It has authoritative game servers, built-in matchmaking, state sync, and SDKs for Unity, Defold, Construct, Haxe, JavaScript, and React. A cloud service hosts the servers. It uses the MIT license.
Install
npm install @colyseus/sdkFor an agent
Use it for multiplayer games or shared live experiences. It has no role in interface design itself.
Why it is here. It is a mature open-source multiplayer server.
Install command, framework, licence and component list.
Notable for
- Matchmaking
- State sync
- Many client SDKs
Provenance
Verified 2026-10-09. HTTP 200. https://colyseus.io/ (HTTP 200, page fetched 2026-10-09), https://github.com/colyseus/colyseus (GitHub API, 7351 stars), depo.zip listing https://www.depo.zip/tools/j570jaapf3tqzqq0pzaw6cayqd81p58p
