Honestly I have really fallen in love with using normal programs fullscreened through steams gaming mode. It feels like a natural evolution of a window manager like i3, so much new stuff to learn and the exciting thing is this is all new for everybody!

Also in the realm of space games, Overload is a BLAST on the deck, especially in short bursts.

store.steampowered.com/app/448850/Overload/