I was reading a psm magazine when i came across an article on the new Dark Sector. The idea behind the mutant humans was originally in space right, half the population dieing and the other turning into monsters? This sounds an awful lot like the one season tv series of Firefly, where Reavers are the mutated beings as a result of releasing gases into the air of their planet. This killed half the population and turned the other half crazy and well.. mutated. The Reavers are seen many times by the heroes of firefly in SPACE. It definetly sounds like they stole the idea.

There are quite a few game based on mutants or people mutating. It's never been really original