Left 4 Dead 2

The sequel to the best-selling and critically-acclaimed co-operative multiplayer smash from Valve, Left 4 Dead 2 takes place at roughly the same time as the original, and leads four new "Survivors" through the southeastern region of the US - from Savannah, Georgia to New Orleans’ French Quarter. The title adds melee combat, new monsters and weapons, the AI Director 2.0 advanced technology, and more to create a much larger game than the original.