Probably Stolen Steam Deck compatibility is rated Playable, not Verified, and the store page lists no controller support — the app's feature flags include a mouse-only option and no controller flag at all. With mouse and keyboard it plays fine on the Deck.
Probably Stolen Steam Deck: What Works Out Of The Box
- Mouse and keyboard work. That is the whole story: the shop counter is a mouse game.
- There is no official Deck layout. Players make their own custom layouts for the trackpads, and the developer has said the game is comfortably playable after community members rebind the controls.
- The trackpads work as a mouse analog and the touchscreen works, but players report the trackpad UX is poor compared to a mouse.
- Native controller support is an open request. The developer said they would look into it after the release rush.
Other platform facts: Windows only, with no macOS or Linux build. The store page lists Steam Cloud, Steam Achievements, adjustable text size and custom volume controls.
If the frame rate is the reason you are still on the handheld, the low FPS fix applies on the Deck exactly as it does on a desktop.
Trackpad Layouts And Known Lockups
Some Deck players hit lockups that need Alt+F4 in the full game, while the demo had none. If the game freezes, Alt+F4 is the way out and the layout you were using is usually the thing to change.
Because the build is Windows-only and the workshop mods are ordinary Steam Workshop items, install them from the same in-game Mods panel you would use on a desktop — the mods page lists what is available and how the loader works.