


If it's crashing on start and you are using different language than English, just go to properties of the game, change language to English, let it download and launch the game. Then from the main menu close the game and change language back to your desired language. For me this happends only with Steam version on the Steam Deck.

I preferred classic over definitive edition cause of better performance when testing 2 years ago

Crash once during chapter 2
Great story and good performance on deck
Amazing gameplay, looks really good on the Steam Deck. Listed as unsupported, but works without any tweaks. Just download and play, no crashes at all. Sometimes gamepad icons are not correctly shown ingame, but you can look up the controls and/or change them and it shouldn't give any hassle playing.
Settings all on high, PhysX off. Buttery smooth solid 60fps didn't encounter any fps drop. Cutscenes are capped at 30fps.
If you have Mafia II (classic) in your library, play it on the Steam Deck. Amazing game, looks good, feels good. Should be Steam Deck verified.
Medium settings
Runs great at stable 60fps