In the game's main storyline, Batman is incarcerated in Arkham City, a super-prison enclosing the decaying urban slums of fictional Gotham City.
Written by veteran Batman writer Paul Dini with Paul Crocker and Sefton Hill, Arkham City was inspired by the long-running comic book mythos. Based on the DC Comics superhero Batman, it is the sequel to the 2009 video game Batman: Arkham Asylum and the second installment in the Batman: Arkham series. Batman: Arkham City is a 2011 action-adventure game developed by Rocksteady Studios and published by Warner Bros.