UETOPIA Online Subsystem

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OSS features: Identity, Sessions, Matchmaker, Recent players, Friends, Party, and Chat

  • Supported Target Platforms
  • Supported Engine Versions


Connect your game with the UETOPIA back end.

Stay Current

Download the latest version (with fixes) at Github

Quick Start

ProMMO Game Template project


Details and more in-depth information

RPG games with persistent worlds

Video Demo

Example game code

Video setup how to

Text setup how to

eSports games with match based play

Video Demo

Example game code

Video setup how to

Text setup how to

Technical Details

Please download github the latest release from github, which fixes some issues that users have been reporting.


  •  Identity
  •  Sessions
  •  Matchmaker
  • Recent Players
  • Friends
  • Party
  • Chat

Code Modules:

  •  OnlineSubsystemUEtopia: Runtime
  •  SIOJson: Runtime

Number of Blueprints: 0

Number of C++ Classes: 17

Network Replicated: Yes

Supported Development Platforms: Win64

Supported Target Build Platforms: (Client: Win64) (Server: Win64, Linux)

Documentation: https://github.com/uetopia/uetopia-online-subsystem

Example Project: https://github.com/uetopia/ProMMO

Important/Additional Notes: For best results, use the OSS enhanced branch and patched engine from github (enables some delegates and functionality not supported by the stock Online Subsystem)



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