The Most Violent Video Games Ever Made
PCWorld:

"By Friday the 13th this past week, two of the goriest games to date arrived on store shelves: MadWorld and Resident Evil 5. An omen? No, it's a bloody obvious sign that some video games are made for adults. There's a reason why the game industry has a self-regulated ratings system. Would you strap in your tween to watch Saw? Maybe traumatize a toddler by reading it to sleep with Stephen King's "It?" Exactly. So don't go buying an "M-rated" game for the kids."