DarkZero writes: "Zombies are usually relegated to one role in video games: The bad guys. Hardly surprising, they're not the friendliest of characters. But when the world is being invaded by alien brains, who better to save the day than the brain hungry living dead? It's not any old zombies that are saving the world though; this lot are a bunch of high school drop outs who've dropped out in the most terminal way possible. So the future of the earth rests in the hand of a bunch of decomposing school kids, that's encouraging..."