EOS Online Subsystem

Redpoint Games - Sep 12, 2020

This plugin provides an Unreal Engine online subsystem for Epic Online Services.

  • Supported Platforms
  • Supported Engine Versions
  • Download Type
    Engine Plugin
    This product contains a code plugin, complete with pre-built binaries and all its source code that integrates with Unreal Engine, which can be installed to an engine version of your choice then enabled on a per-project basis.

Use Epic Online Services in Unreal Engine! With support for authentication, friends, sessions, parties, presence and peer-to-peer networking, this plugin has what you need to build games on top of EOS.

Plus it supports neat features, like showing a unified friends list of friends from both the native platform and Epic. It also allows you to seamlessly invite friends to parties from other platforms like Steam, and it fully supports play-in-editor so you don't need to set up multiple machines to do your testing on.

Not only that but authentication is handled for you. You don't need to deal with account linking or creation, and you don't need to build user interfaces to support the Epic Online Services login flow. Just call AutoLogin and you're done.

If you need blueprint support, check out Online Subsystem Blueprints. EOS Online Subsystem only provides C++ support by default, so if you need blueprint support, you will need to buy OSB as an additional purchase.

Purchasing the EOS Online Subsystem plugin entitles you to source code access and support. Upload your receipt to the License Manager to access support and source code.

Technical Details


  • Authentication (EOS Connect & EOS Auth)
  • Friends
  • Sessions
  • Parties and invites
  • Presence
  • Peer-to-peer networking
  • Support for listen and dedicated servers
  • Full play-in-editor support
  • Unified friends lists across platforms - see Epic, Steam, Discord, etc friends all in one list!
  • Seamless cross-platform party invites - players can join your EOS party from Steam, etc.
  • Free edition for developers earning less than $30k USD/yr (coming soon)
  • Blueprint support via Online Subsystem Blueprints (additional purchase)

Supported Development Platforms: Windows, macOS

Supported Target Build Platforms:

  • Marketplace binaries: Windows, macOS, iOS (Linux coming soon)
  • Source code via License Manager: Android, Nintendo Switch

Documentation: Website

Example Project: Website

Product Support: To access support, upload your receipt to the License Manager. You will then be able to access support on Discord.