At the moment I'm waiting for Fallen Earth, a post apocalyptic MMO. Beta is yet to be announced though, but from what the small community waiting for it can gather, it might fit your description of what you want.
I've had a few friends I tried to turn on to Fallen Earth, but a few of them said it looks like "teen angst". What I hope, though, is that it isn't all noserings and emo clothes. :-P I just want some variety, and that's what was promised (I think...)