Colyseus Multiplayer

Philosophy

• Treat every client as untrusted: the server decides, the client only asks.
• Validate before you mutate: parse the payload, check ownership and rules, then change state.
• Plan for dropped connections as the normal case, not the exception.
• Keep synchronised state in Schema and keep matchmaking metadata honest about the room.

When to Use

• Building server-authoritative multiplayer game backends with Colyseus 0.17+.
• Defining rooms, Schema state and lifecycle hooks (onCreate, onJoin, onLeave, onDrop).
• Writing message handlers that must validate client payloads and resist cheating.
• Configuring matchmaking metadata, authentication or reconnection policy.

When Not to Use