Same here. The closest thing I have found is Townsmen VR https://store.steampowered.com/app/749960/Townsmen_VR/

I had read they have confirmed the game will be coming to steam deck shortly after, so I assume this will be working on Linux day one. I play on Linux and enjoy Warhammer so will be purchasing this game with that assumption.

Edit to include a link to the article I had read: https://www.gamingonlinux.com/2024/08/warhammer-40000-space-marine-2-will-get-steam-deck-support/

“We Happy Few” https://store.steampowered.com/app/320240/We_Happy_Few/