This is Chuck Rice, owner of Vigilance Press.
We've been around since 2001 and have done products for d20, 4C, True20, OSRIC, ICONS, and coming soon, Mutant Future!
As someone who did a fair amount of work for RPGObjects, including Darwin's World, I am decidedly pro-apocalypse and I am also a huge fan of classic Gamma World.
Put those together and me doing something for Mutant Future at some point was all but inevitable.
I've started a thread about Nuclear Sunset, the MF setting we'll be releasing in regional sourcebooks, in the MF forums, so if you like the idea of a big post-apocalyptic setting, I encourage you to go there and check out the information we'll be releasing in the days to come.