Batman: Arkham Asylum
Platform: Mac OS X Windows PS3 Xbox 360 Genre: Action Adventure Beat-Em-Up Developers: Rocksteady Studios Feral Interactive Publishers: Eidos Interactive Warner Bros. Interactive Entertainment Square Enix Feral Interactive Released:

The Joker attacks Gotham City's Mayor's office but is foiled by Batman, who escorts him to Arkham Asylum. Due to a recent fire at Gotham City's Blackgate Prison, many members of the Joker's gang have been temporarily relocated to Arkham. As Batman accompanies the guards taking the Joker inside, the asylum's security is overridden by Harley Quinn, allowing the Joker to escape and take control of the facility.