[Fathom Zero]

I grant full disclosure and say that I've not modded Shadow of Chernobyl. I loved it a lot, though.

But Call of Pripyat just blows away every PC game in years for me. The sound design, the weather effects, all of it. Everything is immersive. I started playing it in my apartment's living room on my big-ass TV with my surround sound stereo system hooked up and it blew my mind. Blew everyone else's mind, too, because after a while, I was attracting a crowd. Seriously, I can't laud Pripyat enough.