Hollow Knight and both Ori games if you like platformers and Metroidvanias. I recently ended Blasphemous and had a blast with it.
I agree that the Deck is meant for 2D platformers. That’s why I’m holding off on buying many titles till I can get my hands on a Steam Deck.
Glad to see Ori getting much needed love due to the OLED. It’s a great game nonetheless.