A game were you and your friends play as survivor trying to get out of a zombie apocalypse alive. There are four characters, Bill, Zoe, Francis (the best) and of course Louis the black guy that always dies. There is also a Versus mode which is basically the same thing except your trying to beat the other teams score and the teams take turns playing as zombies and humies.
Bill: Francis shut the fuck up!
Francis: i hate hospitals, doctors, boat lawyers, the army, the woods, log cabins, sewers, boomers, smokers, zombies, your mom...
Gamer: Left 4 dead sucks on xbox.