Batman: Arkham Asylum will receive its first map pack on September 17th,  called the Insane Night Map Pack. The first map is called the Totally Insane FreeFlow map, and has Batman taking on hordes of inmates as he tries to escape from the Asylum’s records room. The second one is called the Nocturnal Hunter Invisible Predator Map, and utilizes the watchtowers(which implies that its set outside) and Batman’s gadgets, as he tries to pick off the Joker’s henchmen without being spotted.

The map pack will be out on Thursday, and has previously been announced as free.