- Create the directory
/home/deck/Games/ea/pfx. This will be the Proton prefix and will make it easier to get to when things invariably go wrong at some point in the future. - Download the EA app
- Add non-Steam game and find the exe
- Edit the app's settings in Steam
- Rename the app to "EA App" for cleanliness
- Nuke the contents of "Start In"
- Set the launch options to
STEAM_COMPAT_DATA_PATH="/home/deck/Games/ea/pfx" %command%. Feel free to add other options likeRADV_PERFTEST=gpl. - Flip over to Compatibility and force a version of Proton known to work. 8.0-2 was used when writing this, but I will forget to keep this up to date, you should do some research.