Best Steam Deck Games You Can't Play on Console – PC Exclusives and More – TouchArcade
For a lot of people, the Steam Deck lets you carry your Steam library with you everywhere thanks to native releases, Proton letting you play Windows games on it, and also emulation. There's a big group of people who only play on console, so the Steam Deck is the most convenient way to access games that aren't on console with some that likely will not ever come to console.
Source: toucharcade.com