What is the Godot equivalent to Unity's Mirror + Steamworks + Fizzy, or Unreal's AdvancedSessionsPlugin for co-op over Steam?

Godot Version

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Question

Hello everyone,
I’m exploring the possibility of developing a networked game using Steam Relay/Lobbies and PvP for up to 4 players.

I’ve done some tests with Unity’s Mirror + Fizzy transport and Unreal’s AdvancedSessionsPlugin — both are battle-tested and work fine.

I’d really like to use Godot for this game, but I haven’t found any well-supported solutions or example games that implement this setup.

So my questions are, based on your experience:

  • Has anyone done this successfully in Godot?
  • How mature is the networking and Steam integration in Godot for this kind of use case?

Thanks a lot.

GodotSteam seems pretty mature, including peer to peer orchestrating