Elden Ring Seamless Co-op

Elden Ring Seamless Co-op (ERSC) adds cooperative multiplayer to Elden Ring such that a group of friends can play the game together from start to finish.

Linux setup

ERSC works on Linux without issue.

1. Download the latest release.

2. Unzip the archive to ~/.local/share/Steam/steamapps/common/ELDEN RING/Game/. Paths ELDEN RING/Game/{ersc_launcher.exe,SeamlessCoop} should have been created.

3. Edit ELDEN RING/Game/SeamlessCoop/ersc_settings.ini.

4. In Steam, use "add a non-Steam game" to bring in ELDEN RING/Game/ersc_launcher.exe, and configure it to launch with Proton.