first of all i know this guy pretty well and he is not a sick or crazy at all, its funny that you all freak out about this but i do remember games where you kill hundreds of people at an air port or have sex with a hooker then kill them, and they sell really well.
about the game , fun and originality play in to this well, i hate the fact i enjoy it so much, especially because the fact i told myself i would stop punching animals.