Human Tetris Facebook Game Lets You Throw Friends Off Buildings [VIDEO]

Human Tetris anyone? Eastpak, the backpack company, has built a Facebook campaign around the concept -- with a violent twist.

Eastpak isn't the first to envision Human Tetris. But the company's vision is unusual in that it involves people flinging themselves off a building and onto concrete. The brand's Facebook game Spak, which you only get to see if you "Like" the page, lets you play a with your Facebook friends' faces superimposed over the falling bodies.