Note: This is taken from a README.txt included with the mod. The article may not be frequently updated. Always check the README.txt for the newest version of this text.

ELDEN RING Reforged Compatibility: Linux / Steam Deck

While imperfect, people have successfully gotten Reforged to work on Linux (such as Steam Deck).

You will most likely not be able to use the Launcher EXE in Linux, and you'll have to set up
your own copy of Mod Engine 2.

We cannot provide detailed instructions, but point you in the right direction:

1) There is a Proton-enabled Mod Engine 2 fork: https://github.com/Cloudef/ModEngine2/releases/
You'll have to use it instead of the bundled ME2 install. The releases contain more instructions & information.

2) The "Setup UI Images" tool Gideon.exe is poorly compatible with Linux, however it, too, can be made to work.

2a) Windows method: Simply perform the Setup UI Images step on Windows, and copy the completed files over from "mod/menu/hi".

2b) Linux method:
Instructions taken from the ERR Discord, courtesy of @gribbidigoo:

1. Set up Bottles on a flatpak or whathaveyou, and then enable "Steam Proton Prefixes" in Preferences.
2. Then, you should see ELDEN RING in the list under Steam Proton.
3. Then, click the Command Line button to open cmd in your Elden Ring's wine prefix.
4. Next, run this command in the cmd:

start "" "path/to/Gideon.exe" --user --project "ELDENRINGReforged"

Replace path/to/gideon.exe with the path to Reforged's included gideon.exe
5. Since this command is being executed in a wine prefix, you'll need to point it to the files
as they are in the Linux file system. For example, here's where mine is:

Z:\run\media\constance\funnyLemons\SteamLibrary\steamapps\common\ELDEN RING\Game\mods\reforged\menu\deploy\Gideon.exe

3) Finally, take the files from the "compatibility\linux" folder and overwrite the files in the "mod" folder with them.

Known issues:

- There will be some issues with missing textures for custom assets (such as in the Gilded Cave of Knowledge). These seem to be an issue with ModEngine 2, not Reforged.
- Things that change animation speed, such as Perfect Attacks or Placidusax's Roar, will not work.