SOOOO Stupid,its penguin with gun killing penguins with no guns and penguins join teams with humans to kill 1 penguin.It should be penguins vs humans but... u got pengiun vs penguins+humans
L4D is too easy i beat it online i beat it not online i beat it with real players as zombies but... its a INCREDIBLE game i would pay that dude myself for making that game