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Colyseus

colyseus.io

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What it is

Colyseus is an open-source Node.js framework for building real-time multiplayer games, with built-in matchmaking and state synchronization. Its authoritative server design has clients send inputs while the server decides game outcomes. Developers define game state on the server, and Colyseus synchronizes it to clients without manual serialization. The framework creates rooms and matches players automatically; rooms can be distributed across processes or machines. The site says this can scale from 10 to 10,000+ concurrent users. SDKs or integrations are listed for JavaScript, Unity, Godot, GameMaker, Defold, Haxe, C, and Construct 3. The MIT-licensed framework is free for commercial games and can be self-hosted as a standard Node.js application on cloud services or bare metal. Colyseus Cloud provides deployment, scaling, and monitoring across 32 global locations. Its Cloud plan starts at $15/mo and includes email support, while the free Open Source plan includes community support. Cloud has no free tier or automatic scaling; heavier workloads require upgrading deployment resources through the dashboard.

Spec sheet

What it does
Colyseus is an open-source Node.js framework for authoritative multiplayer game servers with real-time synchronization and matchmaking.Read 14 Oct 2026 · docs.colyseus.io
Support
The Open Source plan includes community support, while Colyseus Cloud includes support by email.Read 29 Sep 2026 · colyseus.io
License
The repository is released under the MIT license, permitting commercial use, modification and redistribution with notices retained.Read 14 Oct 2026 · github.com
Founded
LinkedIn lists 2016 as the founding year.Read 14 Oct 2026 · linkedin.com
Authentication and admin
The official documentation describes authentication, database services and an admin panel as included parts of the stack.Read 14 Oct 2026 · docs.colyseus.io
Authentication integration
The official authentication module supports email and password, anonymous authentication, password reset, and OAuth 2.0 providers.Read 29 Sep 2026 · docs.colyseus.io
Authoritative servers
Colyseus uses an authoritative server architecture in which clients send inputs and the server decides what happens.Read 29 Sep 2026 · colyseus.io
Cloud availability limit
The Cloud hosting page says there is no free tier at this moment.Read 29 Sep 2026 · colyseus.io
Cloud hosting
Colyseus Cloud provides managed deployment, scaling and monitoring without requiring operators to manage servers.Read 14 Oct 2026 · colyseus.io
Cloud locations
Colyseus Cloud provides deployment, scaling, and monitoring across 32 global locations.Read 29 Sep 2026 · colyseus.io
Cloud reliability
The Cloud hosting page advertises a 99.9% uptime SLA, monitoring and alerts, and zero-downtime rolling deployments.Read 29 Sep 2026 · colyseus.io
Cloud scaling limit
The Cloud hosting page says auto-scaling is not currently offered, and heavier workloads require upgrading deployment resources through the dashboard.Read 29 Sep 2026 · colyseus.io
Company headquarters
LinkedIn lists the headquarters as Sapiranga, Brazil.Read 14 Oct 2026 · linkedin.com
Company size
LinkedIn lists Colyseus Multiplayer Framework as a self-owned company with one employee.Read 14 Oct 2026 · linkedin.com
Documentation depth
Documentation includes getting-started guides for many engines, API references, deployment and scalability sections, recipes, FAQs and migration guides.Read 14 Oct 2026 · docs.colyseus.io
Engine integrations
Official clients are listed for TypeScript, React, Unity, MonoGame, Godot, Defold, Construct 3, GameMaker, Cocos Creator, Haxe, Flutter, Swift, C, Discord Activity and WeChat.Read 14 Oct 2026 · docs.colyseus.io
Hosting options
Colyseus is a standard Node.js application that can be deployed on AWS, Google Cloud, DigitalOcean, Fly.io, Railway, or bare metal.Read 29 Sep 2026 · colyseus.io
Independent repository activity
Hysen Labs records the project as mainly TypeScript, MIT licensed and actively maintained from recent GitHub commits.Read 14 Oct 2026 · hysenlabs.com
Independent score
FAUN.dev gives Colyseus an editorial score of 73 out of 100, with portability and pricing scoring highest and netcode quality lowest.Read 14 Oct 2026 · faun.dev
Installation
The recommended server scaffold is npm create colyseus-app@latest followed by npm start.Read 14 Oct 2026 · docs.colyseus.io
Limit: missing built-ins
An independent architecture review reports that persistence, leaderboards, friends and other live-ops features historically required separate systems.Read 14 Oct 2026 · andersbouwer.wordpress.com
Limit: Node.js dependency
The Hysen Labs review says Colyseus is unsuitable when the server backend cannot run Node.js.Read 14 Oct 2026 · hysenlabs.com
Limit: operations burden
The Hysen Labs review notes that self-hosters must provision and monitor infrastructure such as Redis and load balancers.Read 14 Oct 2026 · hysenlabs.com
Limit: pre-1.0 changes
The Hysen Labs review warns that pre-1.0 minor releases can include breaking changes and require coordinated SDK upgrades.Read 14 Oct 2026 · hysenlabs.com
Maker identity
The repository copyright and LinkedIn employee listing identify Endel Dreyer as the maker associated with Colyseus.Read 14 Oct 2026 · github.com
Matchmaking and scale
The framework provides automatic room creation and player matching, and its site says it can scale from 10 to 10,000+ concurrent users by distributing rooms across processes or machines.Read 29 Sep 2026 · colyseus.io
Open issue: feature gaps
Open issues include requests for Game Center authentication, Unity Asset Store publication, richer LobbyRoom filtering and room-to-room travel.Read 14 Oct 2026 · github.com
Open issue: patch bug
The public issue tracker lists an October 2026 bug report that a queued state patch can be overwritten by the next patch.Read 14 Oct 2026 · github.com
Open issue: security report
The issue tracker lists an October 2026 request for a private channel to report a denial-of-service issue in the 0.18 series.Read 14 Oct 2026 · github.com
Open-source license
Colyseus describes the framework as MIT licensed and free for commercial games.Read 29 Sep 2026 · colyseus.io
Praise: ease of use
An independent Hysen Labs review says Node.js teams can quickly understand room code and avoid writing their own delta encoder.Read 14 Oct 2026 · hysenlabs.com
Praise: portability
The Hysen Labs review highlights support for multiple client engines while keeping a Node.js server backend.Read 14 Oct 2026 · hysenlabs.com
Prediction netcode
Version 0.18 adds client prediction, rollback, interpolation and lag compensation.Read 14 Oct 2026 · docs.colyseus.io
Public API
The documentation exposes Room, Client, matchmaking, state synchronization, message and prediction APIs.Read 14 Oct 2026 · docs.colyseus.io
Release 0.18
On August 20, 2026, Colyseus announced 0.18 with prediction, lag compensation, request-response messaging, Schema 5.0, database persistence and an admin package.Read 14 Oct 2026 · colyseus.io
Rooms and matchmaking
Room definitions create multiple match instances with visibility controls, lobbies and ranked queues.Read 14 Oct 2026 · docs.colyseus.io
Scaling
The project describes scaling from about 10 to more than 10,000 concurrent users using vertical or horizontal scaling with Redis and load balancers.Read 14 Oct 2026 · github.com
SDK package example
The JavaScript client is installed with @colyseus/sdk and the React bindings with @colyseus/react.Read 14 Oct 2026 · github.com
SDKs and engines
The site lists SDKs or integrations for JavaScript, Unity, Godot, GameMaker, Defold, Haxe, C, and Construct 3.Read 29 Sep 2026 · colyseus.io
Self-hosting
Colyseus runs as a standard Node.js application and can be deployed on cloud providers or bare metal.Read 14 Oct 2026 · colyseus.io
State sync
Developers define game state on the server, and Colyseus synchronizes it to clients automatically without manual serialization.Read 29 Sep 2026 · colyseus.io
State synchronization
Server state is sent to clients as automatic binary delta patches.Read 14 Oct 2026 · docs.colyseus.io
Support model
The free plan offers community support, while Cloud includes support by email.Read 14 Oct 2026 · colyseus.io
System requirements
Getting started requires an LTS Node.js release or Bun, Git and a code editor.Read 14 Oct 2026 · docs.colyseus.io
Type safety
The framework can share typed messages, join options and state definitions between server and SDK.Read 14 Oct 2026 · docs.colyseus.io

Plans and prices

Open Source Free Self-hosted · community support · no restrictions Read 14 Oct 2026 · colyseus.io
Colyseus Cloud $15 a month starting at $15/mo Managed servers · SSL certificates · no CCU/DAU/MAU limits · unlimited bandwidth · email support Read 14 Oct 2026 · colyseus.io

Every Colyseus plan and price →

Strong points and limits

Strong points

  • MIT-licensed framework is free for commercial games.
  • Automatic room creation and player matching.
  • SDKs and integrations span several game engines and languages.
  • Self-hosting works on cloud platforms or bare metal.
  • Cloud plan starts at $15/mo.

Limits

  • Colyseus Cloud has no free tier.
  • Cloud auto-scaling is not currently offered.
  • Heavier workloads require manual resource upgrades through the dashboard.
  • Open Source plan support is community-based.

Who it suits

Colyseus suits developers building real-time multiplayer games who need server-authoritative game logic, matchmaking, and state synchronization. It offers both self-hosted deployment and a managed Cloud option.

Verdict

Colyseus offers a free, self-hostable framework and a managed Cloud option for multiplayer game infrastructure. Cloud users should account for the lack of a free tier and automatic scaling.

Where Specifiction places it

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