Eidos have announced that the upcoming free Prey in the Darkness map pack for the recently released Batman: Arkham Asylum will be hitting both Xbox Live and the PlayStation Network tomorrow.
The new free map pack includes two addition Challenge Maps;
Heart of Darkness - FreeFlow Combat map: Players will battle waves of relentless and maniacal enemies at the Arkham Pumping Station.
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.
