Left 4 Dead - Xbox 360 (Game Only)
In Left 4 Dead, four humans, Francis, Zoey, Bill, and Louis, had the bad luck to land in the middle of a zombie invested zone, are now trying to get to the evacuation point, and survive the apocalyptic pandemic. The game contains several scenarios which are all divided into several chapters with the goal to reach the save room and hundreds of zombies in-between.
While the campaigns can be played either with AI controlled teammates or with other human players in co-op, the multiplayer also features an additional game mode called "Versus". The basic premise remains the same with four players needing to get safely to the save room but at the same time four other players are randomly assigned the roles of one of the special zombies with the obvious goal to help the normal, AI-controlled infected to get rid of the survivors. The zombie players have the advantage that they can spawn almost anywhere on the map if it's out of sight the survivors and see them through walls if they make a noise but are otherwise, except for the tank, easy to take down if noticed early.