Yes, Ctrl Alt Ego is PLAYABLE on Steam Deck

Ctrl Alt Ego

Innovative immersive sim with emphasis on problem-solving and creativity. Prey 2017 meets Portal, but with its own systems and mechanics. One of the best games of 2022 according to various credible sources (see store page) and one of the top puzzle games on PC according to RPS. Try the demo!

While we're still waiting for Valve to get round to officially testing it, please be assured: [b]Ctrl Alt Ego is very much playable on Steam Deck![/b] With any luck it will eventually be considered VERIFIED too.