Left 4 Dead 2

It's Post-Apocalypse. Zombies and mutant creatures run rampant through the streets of Louisiana. What do you do?
Grab three of your buddies and shoot/hack your way to freedom through five good length campaigns, four different game modes, and an A.I. "Director" that changes the pace(monster spawns,weapons and items, etc..), you will be playing Left 4 Dead 2 long after the evacuation choppers have left. My favorite game mode is Versus where you can also played as specialized Infected characters and try to off the survivors before they make it to the safe house. A Definite BUY for FPS and zombie fans.