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EOS Online Subsystem

Redpoint Games - Code Plugins - 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, 5.0 - 5.4
  • 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.

Looking for team matchmaking with any layout (4v4, 1v2v3, etc.) and no matchmaking servers required? Take a look at our new Matchmaking plugin!

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.


  • 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, including cross-platform friends without requiring Epic Games accounts - and you can send friend invites to any other EOS user!
  • Sessions
  • Parties and invites
  • Voice Chat
  • Presence
  • User info
  • External UI
  • 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, Quest
  • Source code via License Manager: Xbox One & Series X/S, Nintendo Switch™, PlayStation®4 , PlayStation®5

Supported Unreal Engine Versions: Last 3 stable Unreal Engine releases*

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

* The versions listed at the top of this page refer to the engines that plugin binaries are available for. However, the Marketplace does not allow us to ship updates for engines older than the last 3 releases, so we do not support engines older than this through Standard Support.

Nintendo Switch is a trademark of Nintendo. "PlayStation" is a registered trademark or trademark of Sony Interactive Entertainment Inc.