Fast, Simple, Customizable Multiplayer Framework

An open-source multiplayer solution that empowers game devs to Get To Fun Faster™. Built on Node.js

Looking for a fully managed solution for your Colyseus game server? Check our Colyseus Arena to leave hosting, infrastructure, and scaling to us.

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.

Join The Community

Get support. share games, and exchange ideas with our growing dev community. Check out our Forums and join us on Discord,

Github

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.

Raft Wars

Raft Wars Multiplayer is live! You'll be battling against people online. Some of the coolest features: build your own raft and take it to battle, lots of weapons, ammo and upgrades. Wind will affect your shots. And of course all the heroes from the original games, plus many more!
The game is playable in browser on Poki.com

SchoolBreak.io

Play quick 5 minute rounds with 6-10 players online as you try to make the greatest mess ever seen - but keep an eye out for teachers... and don't forget to frame Timothy for it - you don't want to end up stuck in detention.

Knight's Edge

Choose your weapon and take to the field in Knight’s Edge! Slay the monsters with your team, racing to see who will come out on top. Knight’s Edge is available in select countries on iOS and Android.

Teamflow

Teamflow is a virtual office for your team to hang out in. Bring back the presence of being in the office, the energy of working in the same room, the spontaneity of hallway conversations — the joy of feeling like a team.

NBA House Digital

NBA House Digital is an immersive social chat room experience where users can interact with each other, play mini games with chances to win incredible prizes, and get access to exclusive NBA content. All while watching the NBA Finals 2021 games live!

Decentraland

Decentraland is a 3D virtual world owned by the users! Colyseus is frequently utilized by the users to create unique multiplayer experiences within Decentraland!

MiniPool.io

MiniPool.io is a multiplayer billiards game with very realistic physics. Have fun playing this bar classic brought to your phone by Miniplay.com and become a true legend! Choose your avatar and customize both the stick and the table before you start playing against your friends.

Gunfight.io

Gunfight.io is an intense multiplayer game with pixel graphics. In the game, you and your team must eliminate the other team in a gunfight. Join either as a counter-terrorist or as a terrorist. The first team to accumulate 25 kills wins the battle. Crouch behind an object to protect yourself from the enemy's fire. To shoot, you need to enter scope mode; this mode has very limited visibility and you will have to stand up (which means your body is exposed and vulnerable to an attack). In certain maps, you can pick up a rocket and use it to deal high damage. Back up other team members to ensure victory. Good luck!

CSC

Get ready to embark on an adventure through the cosmos! CSC is a casual space MMO with fast-paced combat, a robust player economy, and an uncapped crafting system.

Players can discover & travel to different star systems, mine stellar bodies for resources, craft items and ships to sell, battle pirates and other players while commanding their very own starship! CSC's upcoming battle arena is built on Colyseus. CSC MMO is in the process of being fully migrated to use Colyseus Arena.

Super Battle Legends