Eidos has announced that Prey in the Darkness, the second free downloadable map pack for Batman: Arkham Asylum, will be available beginning September 24 on PlayStation Network and Xbox LIVE Marketplace.

The DLC features:

Heart of Darkness FreeFlow Combat map: Players will battle a mob of relentless and maniacal enemies at the Arkham Pumping Station. Even the most seasoned Batman: Arkham Asylum player will enjoy stepping into the boots of Batman to take down increasingly difficult waves of insane inmates.

Hothouse Prey Invisible Predator map: Players will have to rely on their Predator instincts to silently and effectively take down enemies at the Abandoned Glasshouse.

Batman: Arkham Asylum is available now for Xbox 360, PS3 and PC.