Batman: Arkham City Lockdown, Arkham Wiki

Batman: Arkham City Lockdown is a fighting video game developed by NetherRealm Studios and published by Warner Bros. Interactive Entertainment for iOS which was released on December 7, 2011. Taking place before Batman: Arkham City, the game sees players using touchscreen controls to fight enemies one-on-one, including villains such as Two-Face, Solomon Grundy, Joker, and Deathstroke. Defeating enemies earns points that can be used to upgrade Batman's stats or unlock gadgets or costumes. The game

The Joker, Arkham Wiki

Batman: Arkham City Lockdown - Biographies

Playable Characters, Arkham Wiki

Batman: Arkham City Lockdown App - Free Update Available - Batman

Batman: Arkham City Lockdown (Video Game 2011) - IMDb

Azrael, Arkham Wiki

Batman: Arkham City Lockdown, DC Database

GCPD Building, Arkham Wiki

Batman: Arkham Origins (mobile) - Wikipedia

Red Hood, Arkham Wiki

Batman: Arkham City Lockdown - Gamereactor UK

Arkham City (Location) - Giant Bomb

Deathstroke, Arkham Wiki

Batman, Arkham Wiki

Batman, Arkham Wiki