I mostly play GOG games as I am against DRM.
I don’t have a gaming desktop, I play on my regular Fedora Workstation with Intel Graphics and there are many good quality games which fit the spec and can be played natively or via Wine.
The recent discovery for me is Rimworld, but there are also games like Banished or Torchlight, which I replay from time to time to relax. Or Firewatch and “The Witness” which are quite unique and amazing.
Even Shenzhen I/O sometimes, where you play as employee of the micro controller company 