Batman Arkham City is the best super hero game ever made. Period. So it's no surprise it's getting a Game Of The Year Edition released with all previous DLC included in the package. It will also feature a brand new playable chapter titled Harley Quinn's Revenge. It's expected to be about two hours of game play and you can play as Batman or Robin in the DLC. Yes, the new chapter will be available on PSN and XBL for download on May 29th for those who already owned Arkham City previously.