The only games in my library at all that don't work on linux are indie games from the early 2000s, and I'm comfortable blaming the games themselves in this case.
I also don't play any games that require a rootkit, so..
good move, thats why i treat my windows install as a dumb game box, they can steal whatever data they want from that i dont care. i do my real work on linux, as far away from windows as i can possibly get.
Same way I treat my windows machine, but also the reason I wont be swapping it to linux any time soon. I use different operating systems for different purposes for a reason. It's great for fompartmentalization.
When I am in front of windows, I know I can permit myself to relax, breath easy and let off some steam. When I am not, I know I am there to learn/earn a living/produce something etc. Most probably do not need this, but my brain does, or I would never switch off.
What works for me is having different Activities/Workspaces in KDE - they have different wallpapers, pinned programs in the taskbar, the programs themselves launch only in a specific Activity. I hear others also use completely different user accounts.
I also don't play any games that require a rootkit, so..