New mutations are out. Ex. like United we stand (all survivors at once ), Pitch Black coop (for RE and SH fans), Classic SD (what you say about 2 smokers, 2 boomers and 4 hunters at once) and dream of newbie players, Tank Training ( play how much you want as tank in versus mode and you dont need even enemy players) . and its only few of 100 others games. Its f@%@!ing zombie apocalypse: bring friends, even more than have...