Arkham City was scripted by veteran comic book author Paul Dini, who also scripted Arkham Asylum. It features a main plot and side-missions that develop their own sub-plots. The main storyline revolves around Batman's imprisonment in Arkham City, a sprawling new super-prison five times bigger than the original asylum and enclosing a wide variety of industrial districts, iconic locations and Gotham City landmarks. He must now stop mishaps occurring around this chaotic enclosure, mainly caused by his arch-nemesis the Joker. The game has received universal critical acclaim, making it one of the highest rated video games released in 2011.
Joker: We know, i am in it too hehehe