I have not played Enter the Gungeon on Fedora but it was given for free on the PS4. I highly recommend that game. Unfortunately it appears Exit the Gungeon does not have Linux support yet.
I’ve enjoyed several of the other Devolver Digital games as well. I have Disc Room and Pikuniku. I also tried the demo of Carrion. They are all made by different developers but Devolver Digital seems pretty good at picking games to publish.