There's currently somewhere around 92,000 games on Steam and so it's going to take a long time for Valve to check them all on Steam Deck but here's some recent picks.
It’s explicitly marked as unsupported. I wonder why though. Maybe I’ll check it out but I’d rather not gamble on each purchase. Something like oneshot doesn’t work on Linux. Their native build is broken and the proton version has some sort of mouse mapping bug last I checked. https://www.protondb.com/app/420530
So if it’s not at least playable according to steam deck rating, I won’t gamble.
Max Payne works with a platinium rating, see in winehq: https://appdb.winehq.org/objectManager.php?sClass=application&iId=661 and also in protondb: https://www.protondb.com/app/12140?device=any
Just because a game hasn’t been verified by Steam does not mean it doesn’t work.
It’s explicitly marked as unsupported. I wonder why though. Maybe I’ll check it out but I’d rather not gamble on each purchase. Something like oneshot doesn’t work on Linux. Their native build is broken and the proton version has some sort of mouse mapping bug last I checked. https://www.protondb.com/app/420530
So if it’s not at least playable according to steam deck rating, I won’t gamble.