Palworld is enjoying a nice resurgence after the release of the Feybreak major update with a huge increase in players. Going from around a regular 45,000 players online to around 200,000 concurrent players. However, Valve have dropped the rating the Steam Deck Unsupported.
Play a new game for a few hours on deck, and there will be a little unobtrusive prompt box asking if you agree it’s “great on deck” near the play button.