Warner Bros. Home Entertainment Group announces the acquisition of a majority stake in Batman: Arkham Asylum developer Rocksteady Studios. "With the successful release of Batman: Arkham Asylum, a franchise that is a key focus for Warner Bros., Rocksteady has proven that they have the expertise to create hit games with mass appeal," said Martin Tremblay, president, Warner Bros. Interactive Entertainment. "We are currently working with Rocksteady on the sequel to Batman: Arkham Asylum and look forward to bringing the continuation of the franchise to fans worldwide."