FlatOut 1, 2 and Ultimate Carnage all get Workshop support, Deck verification in new updates
I like my car combat to be focused on collisions not guns, and for the vehicular argy-bargy to be an additional layer of excitement and strategy upon a racing core. FlatOut, then. A series of bumper car racing which managed to impress with its crumple zones long before the era of Wreckfest or BeamNG.
Now FlatOut, FlatOut 2 and FlatOut: Ultimate Carnage have all received an update on Steam to add Workshop support, Steam Deck verified status, improved performance, and in the case of FlatOut 2, re-enabled online multiplayer.