I can’t think of a game right now that I would want to play so much that I would be willing to install Windows.
Oh, I actually can. Gnomoria. Which is like 10 years old, unfinished (pretty much playable, though) but AWESOME indie , dwar-fortress-inspired colony sim, does technically have Linux build, but the Linux build has a horrible bug where it corrupts your save after getting to a certain advanced point in the game. For that one, my dear beloved Gnomoria, I actually ended up installing Windows 10 in a KVM a year or so ago :-D.