Not only is it competitive, it's actually superior in many instances. https://arstechnica.com/gaming/2025/06/games-run-faster-on-steamos-than-windows-11-ars-te

Not only is it competitive, it's actually superior in many instances. https://arstechnica.com/gaming/2025/06/games-run-faster-on-steamos-than-windows-11-ars-testing-finds/ https://arstechnica.com/gaming/2025/06/games-run-faster-on-s... Basically the only games that don't work are those which include anticheat which intentionally borks Linux. Check https://www.protondb.com/ https://www.protondb.com/ for any game you're interested in to see if it'll run or not.