CodeWeavers blog about their Linux / Steam Deck work on Proton with PooShooter
PooShooter: Toilet Invaders, yes it's a real game and we all had a bit of a chuckle when we saw Valve noted it fixed in a Proton changelog recently. CodeWeavers, Valve's partner on Proton development, have a blog post up talking about why it was interesting to solve.
How to setup OpenMW for modern Morrowind on Linux / SteamOS and Steam Deck
How to install Hollow Knight: Silksong mods on Linux, SteamOS and Steam Deck