This may seem like a crazy mix up but the team at NetherRealm Studios has taken care in bringing the style of Arkham City over to mobile devices. Ed Boon, Creative Director on the project said the following about the release.
We here at NetherRealm Studios are huge fans of Batman: Arkham City, and we were very excited to develop Batman: Arkham City Lockdown to extend the franchise experience to iPad, iPhone and iPod touch. The app delivers a different take on Batman gameplay in which players must combat against some of the fan favorite villains in Arkham City.
There is even a debut trailer for you to check out.
The game shows you taking on some of the bandits and villains in Arkham City. There is also the gadgets and Waynetech to upgrade and use to your advantage. All the regular cast you expect to find have made appearances, Joker and Two-face, as well as some others such as Deathstroke.