Colyseus on Ubuntu 24.04 LTS

Overview

Colyseus is an open source framework for building the server half of a realtime multiplayer game. You define rooms that hold a match, a lobby or a session, declare the room state as a schema, and Colyseus replicates that state to every connected client over WebSocket, sending only the parts that changed. It also provides matchmaking, a server side simulation loop for advancing the world on a tick, message handlers for the actions clients request, and an admin monitor panel for watching live rooms, connected clients and the state a room is holding.

The model is authoritative: clients send messages and only the server mutates state, so a modified client cannot rewrite the game world. It suits realtime and turn based multiplayer games, shared collaborative sessions, live auctions and quizzes, and any application where many connected users need to agree on one server owned view of the world. Client SDKs are available for the browser, Unity, Unreal, Godot, Defold, Haxe and Cocos.

Common uses

• Run the authoritative server for a realtime or turn based multiplayer game, with matchmaking and server owned state
• Build shared live sessions such as collaborative tools, quizzes or auctions where every client sees one agreed view
• Own your realtime game backend inside your own cloud account, writing your own room logic in TypeScript

See it running

Real screenshots taken while testing this image against its deployment guide.