Maybe you just need a real old relic PC for gaming!
I have one. It's an Am5x86-133 on a VLB/ISA motherboard so it can run some of the old DOS games that aren't happy with PCI controllers (Bio Menace, I'm looking at yooooooou). I really don't want to have two of them sitting around since they're essentially utility machines with no demonstration value other than the software they can run, and I'd rather not install Windows 95 *and* 98 *and* DOS 6 also on it. OrangePC lets me keep lots of disk images for OS combinations in a single computer.
There was a Mac version of DFII. Works pretty well on my Pismo.
Since when? I have Dark Forces for Mac, which runs like a bat out of hell even on the G3 (and behaves very nicely in Classic on the G5), but DF2 was Windows-only. I would love to be proven wrong.