lvra.gitlab.io/content/docs/steamvr/mod-managers.md

weight	title
200	Using Mod Managers

Using Third-Party Mod Managers with Steam Games

This is a guide on how to install and integrate mod managers (like Vortex, MO2, etc.) for games running in Proton. Most of this stuff will break if you use Flatpak for any of the involved programs.

1. Setup Protontricks & Steam Metadata Editor
2. Install your steam game & launch it once
3. Download your mod manager installer (Vortex, MO2 etc.)
4. Run the installer with Protontricks Launcher, select your game when prompted
5. Finish the installer, note the install path
6. Symlink mod manager's installation path inside prefix into the game's install path. For example:

ln -s "/home/faith/.local/share/Steam/steamapps/compatdata/611670/pfx/drive_c/Program Files/Black Tree Gaming Ltd/Vo
rtex/" "/home/faith/.local/share/Steam/steamapps/common/SkyrimVR/Vortex"

7. Close Steam! Then open Steam Metadata Editor
8. Find your game in the list, then click "Edit launch menu"
9. Click "Add New Entry"
10. In Description enter the display name (e.g. "Vortex Mod Manager")
11. Click on the "..." button in Executable field
12. File picker will appear which should be inside game's install directory. If it's not, try again or restart your computer or perform some ritual because it sometimes doesn't work properly.
13. Choose the mod manager executable (e.g. Vortex -> Vortex.exe)
14. Make sure a relative path appears in the Executable field! It won't work otherwise. (e.g. ("Vortex/Vortex.exe"))
15. Working directory should fill-in automatically
16. Close the modal window
17. Click "Save" button
18. Enjoy

You have to install mod manager for each game seperately.