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EOS Online Subsystem

Redpoint Games - Sep 12, 2020

Use Epic Online Services in your Unreal Engine game! This plugin provides an online subsystem for Epic Online Services.

  • Supported Platforms
  • Supported Engine Versions
    4.25 - 4.27
  • 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, avatars, friends, sessions, parties, Voice Chat, presence, stats, achievements, leaderboards, Player Data Storage, Title Storage, peer-to-peer networking, Anti-Cheat and network authentication, this plugin has what you need to build games on top of EOS.

It supports neat features, like showing a unified friends list of friends from both the native platform and Epic. It 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.

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're a developer earning less than $30k USD/yr, a Free Edition is available. Check the website to see if the Free Edition is right for you.

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.

Important: If you are upgrading from an earlier version to 2021.07.06 or later, you must read and follow the upgrade guide!


  • Authentication with support for Steam, Discord,, GOG Galaxy, Epic Games Store, Oculus Rift & Quest, Apple on iOS, Google on Android and all console platforms!
  • Avatars on Steam, Discord, and Oculus
  • Friends
  • Sessions
  • Parties and invites
  • Voice Chat
  • Presence
  • User info
  • Stats, achievements, leaderboards
  • Player Data Storage (UserCloud) and Title Storage (TitleFile)
  • Peer-to-peer networking
  • Support for listen and dedicated servers
  • Full support for Anti-Cheat and network authentication
  • Full play-in-editor support
  • Unified friends lists across platforms
  • Seamless cross-platform party invites - players can join your EOS party from Steam, etc.
  • Free edition for developers earning less than $30k USD/yr
  • Blueprint support via Online Subsystem Blueprints (additional purchase)

Technical Details

Supported Development Platforms: Windows, macOS

Supported Target Build Platforms:

  • Marketplace binaries: Windows, macOS, Linux, iOS, Android (including Oculus Quest)
  • Source code via License Manager: Xbox One, Xbox Series X/S, Nintendo Switch™, PlayStation®4 , PlayStation®5

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.

Refund Policy: View on our website

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