Borderlands 3 on Linux (Steam Deck)
Borderlands 3 may not be the best Borderlands game ever made, but it's still fun to play. Especially in co-op mode.
This one is a bit heavy for Steam Deck, so I suggest lowering the settings to Low. It's also advisable to change the DirectX version to 11, as using DirectX 12 provokes some crashes and other stability issues. Both on the Steam Deck and on the Linux desktop.