Multiplayer sessions plugin with menu

Plugin for handling multiplayer Unreal Engine 5 Project sessions across the Internet. Available options:

• LAN
• Steam

Getting started

To use the plugin in your project:

1. Move the MultiplayerSessions folder to the Plugins folder in the root folder of your project.
2. Enable the Online Subsystem Steam plugin for the project: in UE editor: Edit → Plugins:
3. Add settings to the config files in the Config folder:
   • Steam settings in DefaultEngine.ini:

   [/Script/Engine.GameEngine]
   +NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="OnlineSubsystemSteam.SteamNetDriver",DriverClassNameFallback="OnlineSubsystemUtils.IpNetDriver")
   
   [OnlineSubsystem]
   DefaultPlatformService=Steam
   
   [OnlineSubsystemSteam]
   bEnabled=true
   SteamDevAppId=480
   bInitServerOnClient=true
   
   [/Script/OnlineSubsystemSteam.SteamNetDriver]
   NetConnectionClassName="OnlineSubsystemSteam.SteamNetConnection"
   

   • Game session settings in DefaultGame.ini:

   [/Script/Engine.GameSession]
   MaxPlayers=100
   

4. Regenerate project files: RMB on the .uproject → Generate Visual Studio project files.
5. [Optional] You can use the menu widget of the plugin to host/join sessions through the UI in the following way (e.g. Level Blueprint):