S.T.A.L.K.E.R. 2: HoC v.1
I love Fallout. I love post-apocalypse anything. I love alternate reality / universes.
I was culturally aware of the originals, but never played them; didn't have a PC at the time that could either.
Free on Gamepass? Hell, yeah I'll install it!
Also, remember I suck at gaming now due to my vision. If you're wondering 'wtf is he doing', it's likely that.
Enjoy!