Eidos Interactive and Warner Bros. Entertainment today revealed that an 'Insane Night' map pack for their highly acclaimed and recently released comic book hero title Batman: Arkham Asylum is scheduled to arrive beginning this week, free of charge. The pack features two challenge maps title Totally Insane and Nocturnal Hunter.

In the 'Totally Insane’ FreeFlow Combat map, players will be tested to their fullest as scores of escaped lunatics bear down upon BATMAN as they make their escape through the asylum’s secure records facility. These fast-moving foes will challenge all but the most practiced players, with quick reactions and expert timing needed to fend off wave upon wave of insane inmates, bent on taking down the DARK KNIGHT. In the 'Nocturnal Hunter’ Invisible Predator map, players take on a wholly different approach, practicing their predatory skills to remain in the shadows, utilizing the Arkham watchtowers and Batman’s arsenal of gadgets to gain the upper hand on The Joker’s army of goons patrolling below.