Seems a tenner cheaper than anywhere else..
Take control of the Dynamic Duo, Batman and Robin, as you build, drive, swing, and fight your way through Gotham City capturing escaped villains and putting them back in Arkham Asylum where they belong. Battle against legendary villains including The Joker, The Penguin, Catwoman and more to keep the streets of Gotham clean. Then, for the first time, jump into the story from the other side and play as Batman's foes. Enjoy the power you wield as you spread chaos throughout the city.