Yes, Linux is my only gaming OS these days.
I actually have 6 PCs setup in a LAN all with Mint 19.3
My daughters each have a desktop with Mint and my media center connected to the TV has Mint.
I test a lot of games in Linux on a regular basis... check out our posts and guides:
Guides: http://www.gamersonlinux.com/forum/forums/guides.20/