Comment by cheald

We've been there since the release of the Steam deck. Really, the only things I can't run on my Linux machine are the games that intentionally break the game with anticheat mechanisms. And it's not all anticheat - there are plenty of titles with anticheat that run just fine.

Check whatever you want to play at https://www.protondb.com/ - chances are, if it isn't intentionally borked with anticheat, it runs just fine. Looking at the top 300 games by Steam player count, 17 don't work, and probably 5 of those are utilities (like Crosshair X and Lossless Scaling).