Palworld is a new release on Steam in Early Access from Pocketpair. A fusion of Pokémon with monster catching, farming, building and much more. It is Steam Deck Playable and does work on Desktop Linux too.
That pal in the thumbnail looks like someone on the Palworld team took a fan edit of an Egyptian themed lucario and specifically designed that pal to look just like it.
Can confirm, ran fine on my desktop machine without needing to tinker (caveat: I changed the "compatibility layer" to use proton-ge before attempting to launch it of my own initiative).
I realize this is the linux gaming sub, but it's worth mentioning that this is on Gamepass too (I still use Gamepass on Xbox even though I don't game on Windows anymore).