@gamingonlinux I actually decided to install a bunch of the smallest install and untouched Steam games I own to see how they play on my Deck.

Thus far tried:
Street Fighter 2 (Via Capcom Arcade Stadium)
Epic Battle Fantasy 4
Spy Chameleon
Tricky Towers
Space Invaders Extreme
Geometry Wars 3

Space Invaders Extreme and Geometry Wars 3 were a ton of fun in particular.

Otherwise on my desktop machine I've been playing Battlefield 2042 and AC Origins.