If you're playing on Steam Deck, changing your layout is neccesary. The default one is good enough but most buttons pause the game if you press them by accident. Other than that, the game works flawlessly; I strongly recommend to enable FSR to 5 on quick settings, since otherwise the old, tiny res of the game makes it a really blurry mess, and FSR fixes that just fine. Finally, if you don't like the 4:3 res you can switch the scale from Auto to Adjust; might look a lil' weird at first when you enable it but you eventually get used to it and using the entire screen is way better than having those black holes. Tried with both ProtonGE and Proton 5.0-10 as the other submission suggested, and I didn't noticed any difference between the two. It's up to you to decide which one you use.