The REAL fallout 3? You mean I've been playing a FAKE game? Bethesda, YOU IMPOSTORS!
Seriously though, quit whining about that. Fallout 3 (The apparently fake, but actually released Fallout 3, I mean.) was a great game. I don't see why everyone thinks it's some evil doppelganger.
As for my choice, Anachronox Prime. I'm honestly surprised no one has mentioned it yet. It didn't sell very well, but the original Anachronox is, in my opinion, the best game in terms of gameplay and story ever made. Silent Hill 2 can suck it, in my opinion, Anachronox FTW.