Fast, Simple, Customizable Multiplayer Framework
An open-source multiplayer solution that empowers game devs to Get To Fun Faster™. Built on Node.js

Synchronized
Automatic synchronization of server game states to all clients. Configurable messaging system to provide enhanced logic, such as game object-specific remote function calls & private messages.

Flexible
Support any game type and can be configured to fit your needs from a battle royale shooter to a desktop space MMORPG. Client SDKs to support multi-platform development including web, mobile, desktop, and console.

Authoritative
Rapid development with an authoritative implementation from the start. Easily build your games with server-side game loop/logic to provide fun mechanics and avoid client based hacks.

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Follow Colyseus on Github to view Source Code
Getting Started with Colyseus
Write your game server in TypeScript/JavaScript. Integrate into your game using one of our client SDK's. (See presentation overview, and more examples)
Building worlds with Colyseus
Colyseus flexible framework and batteries included examples will GET you from concept TO FUN FASTER than any other multiplayer solution. Colyseus server code is BATTLE-TESTED and is ready out-of-the-box to host your multiplayer game or social experience. See Colyseus in action below on these top games.

Newsletter
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The fastest solution to get up and running with Colyseus. Focus on your game and leave dev ops, monitoring, and scaling to us.
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FREE Indie/Dev hosting
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Fully customizable server-side logic
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Optimized server configuration
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Multiregional load balancing
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Auto-scaling & burst support on all plans
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Simple setup to GET TO FUN FASTER™