ColyseusMP

ColyseusMP integrates Unreal with the popular Colyseus multiplayer framework. Create or join rooms, receive authoritative state sync and exchange schema-typed messages with your Node.js game server.

ColyseusMP speaks the Colyseus protocol natively: create or join rooms through the matchmaker, receive authoritative schema-encoded state patches, and exchange typed messages with your Node.js room handlers. The C++ SDK maps Colyseus concepts directly, and Blueprint utility nodes cover endpoint building and room-name validation for quick wiring.

Colyseus is one of the most popular open multiplayer frameworks, and this client brings its authoritative room model to Unreal: turn-based and casual multiplayer, card and board games, social hubs, and fast prototypes where you want server-authoritative state without building your own netcode backend.

ColyseusMP is part of the Alpha XP networking collection for Unreal Engine 4.27-5.0+. Every feature is exposed to both Blueprints and C++, ships with styled HTML documentation, and follows one consistent API style across the whole collection. The plugin is compiled and verified against a clean UE 4.27 project, comes with a utility node pack (hashing, GUIDs, timestamps, tokens, validation), and is maintained under the Alpha XP brand with documentation hosted online.

Key Features:

• Colyseus client SDK for Unreal
• Room create/join/leave with matchmaking
• Schema-based state synchronization
• Typed message exchange
• Blueprint utility nodes for endpoints and room names
• Utility node pack: CRC32/MD5/SHA-1 hashing, GUIDs, timestamps, random tokens and hostname validation

Full documentation: https://demo.alphaxp.net/FabStore/Network/ColyseusMP/
Support: https://alphaxp.net/

Technical details:

Code Modules:

- ColyseusMP (Runtime)

Number of Blueprints: 0
Number of C++ Classes: 3
Network Replicated: No

Supported Development Platforms:

• Windows: Yes
• Mac: Yes

Supported Target Build Platforms: Win64, Mac, Linux

Important/Additional Notes: Built for Unreal Engine 4.27-5.0+. Developed and maintained by Alpha XP.