I recently began casually installing games on my Ubuntu system which I use for work. Apart from sound issues that I have because the drivers currently have issues with my specific hardware, I am surprised how ridiculously easy it was to run games. Steam's Proton compatibility layer sure does the crucial work. But it's usually just as simple as install and play.

Worst I had so far was a graphics glitch which was solved by using Proton GE for that title instead. Okay, and Wayland seems to make it hard for games to set the screen resolution and possibly fullscreen mode. But switching to X11 helps to get around such quirks.