Bystander, [Steam] a game about making sure people follow the law that seems a little like Papers, Please has added Linux support.
Note: The game is currently in Early Access.
About the game:
Bystander is an opportunity to become an agent for tracking the network during totalitarianism.
Your task is to search among other people's correspondence on the network those that contradict the current laws, copies of which you will receive by fax.
Follow the new laws, look for the hidden meaning in each phrase and, of course, report violations!
The update that added Linux support was announced on December 6th on Steam, where the developer jokingly called it "Lunix". It looks interesting, but I hope it does enough to not end up just being a clone of Papers, Please.
It seems it's still quite early on for this one, so I will take a look at it properly once it's further developed, just here to keep you updated on games adding Linux support this time around.