My Steam library basically only consists of Witcher 3 and Spiritfarer. I also was gifted a Humble Bundle game for Batman Arkham Knight.
I’m debating on getting Elden Ring and Cyberpunk (both without DLC).
Marvel’s Spider-Man and FF7 Interograde also look like a good value right now for 40 bucks total.
Games I have particularly enjoyed on the deck (that I haven’t seen others recommend already) and are relatively cheap: Outer Wilds (not outer worlds), Hardspace Shipbreaker, Enter the Gungeon