This game is completely borked on the Steam Deck. It doesn't even run correctly under Windows on the Deck -- it detects the screen resolution wrong and gets the game stuck in Portrait mode (800x1280). I've tried manually setting the resolution in the config file; I've also tried using DXVK. Nothing seems to work.

Unless Camel 101 wants to put some more work into this 7 year old game, the chances of it working on the Steam Deck seem to be pretty slim. It's a shame too, because it's a nice little survival horror game.