Before yesterday, CentralDark was just a teaser site. In order to promote its upcoming game, though, Atari has recently added some rather disturbing stories about Central Park to the game's official website. The site is scheduled to be updated with articles every two weeks until the game's release in May.
Also, on a personal note: This blogger grew up relatively close to Central Park, and it's a pretty nice place. Hear that, potential visitors? Don't let this marketing scare you. (This post was paid for by the New York Department of Tourism.*)