

This is reportedly due to their anti-cheat systems. Games which Microsoft lists as "Playable" include Sea of Thieves, Forza Horizon 4 and 5, Quantum Break, State of Decay Year One Survival Edition and Fallout 4, while Halo Master Chief Collection and the recently-released Halo Infinite, plus Gears 5 and the old Microsoft Flight Simulator X are not supported. Bethesda-published games such as Deathloop, The Evil Within, Fallout Shelter, and Prey also make the cut. "Verified" Xbox games include Double Fine's Psychonauts 2, Ninja Theory's Hellbade: Senua's Sacrifice, Battletoads and Max: The Curse of Brotherhood. This is in addition to the "verified" Xbox studio games currently available to play on Steam Deck. Alternatively, you can use STEAM+X to bring up the touch keyboard along with the touch display or trackpads". As for what you'll need? Microsoft says "we recommended you have a mouse and keyboard connected to your Steam Deck for setup.
