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Steam has now officially stopped supporting Windows 7, Windows 8, and Windows 8.1.
(www.theverge.com)
This is a most excellent place for technology news and articles.
I play exclusively on Linux. Almost every game I tried worked flawlessly. The very few that didn't, crashed on startup or a few minutes after. If you don't play AAA online games with anticheat then you should be good. As a rule of thumb, if it works on the Deck then it will work on any Linux distro.
Hell yeah! I've only experienced a few crashes on SD, and so far only on 2 emulated games that I'm okay with just not playing. I love that Valve started really investing in Linux support to make it possible for idiots like me to have somewhere to turn when Microsoft phones it in.