2. Resident Evil (series)
Instead of opting for Capcom's slightly campier Dead Rising, we went with a classic series that's been around a little longer. This past week, Resident Evil 5 hit store shelves. But the zombified series has been lurking in dark corners since the days of the original PlayStation. In that time, it's gone from the equivalent of a scary B-movie to a scary action flick. (The newest installment is far better when a second player has your back. The A.I. renders your teammate a shade smarter than the zombies you're killing.) But at it's core, the series has always been about freaky undead things wanting to do freaky things to you.
Gore factor: Five pints of blood. Well, what did you expect? It's a game about all sorts of undeady weirdness. Whether it's decaying dogs chasing you, ginormous tentacled creatures trying to rip you apart, or chainsaw-wielding maniacs with an axe to grind — the series has thrown it all at the players.