Through Steam and Proton, I’m able to play most of the games I’m interested in: Mass Effect, Last of Us, Jedi Fallen Order & Survivor. Steam Deck is built on Linux too.

I know Steam (Valve) have metrics on it that probably give a good idea of how Linux fares in the PC market for gaming. Probably not entirely accurate but maybe accurate enough. I know it’s the best I’ve ever seen though.

With Proton most games run with no issues and just as fast as on Windows. Those that don’t are because of anticheat, weird launchers or invasive DRM. I still have a Windows partition for those games and Windows only tools but haven’t used it in months.

Currently playing Pokémon Luminescent Platinum on Linux.

I use it for work, my personal desktop, and naturally my Steam Deck. It’s far from being the majority but it is becoming increasingly common thanks to Valve.