Warner Bros. has Batman Arkham City Lockdown (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for 99-cents (5.99 – 5 instant savings) for a limited time.

The inmates have escaped and Batman has his hands full defeating an army of henchmen and some of his most iconic villains. Scour the rooftops and the seedy underbelly of Gotham City through a series of one-on-one battles with the Joker, Two-Face and more, as well as the Batman: Arkham City Lockdown exclusive – Deathstroke. Choose from several Batman skins and power-ups as you punch, kick and combo your way to cleaning up Gotham City.