> (That's the case for Android at least; I'm not sure about the Steam Deck.) AFAIK, the Steam Deck is a traditional Linux desktop (KDE), which automatically ru

> (That's the case for Android at least; I'm not sure about the Steam Deck.) AFAIK, the Steam Deck is a traditional Linux desktop (KDE), which automatically runs the Steam launcher (in full-screen Big Picture mode) by default (but you can easily exit it and go back to the normal desktop if you want).