One iconic Batman location missing from Gotham City Impostors has been rectified, with a free update that provides the "Arkham Asylum" map. Monolith is probably aware that this isn't the first time we've visited the famous nut-house, but its take on the subject matter is a bit brighter and more whimsical.

The update is available now on PlayStation 3 and Xbox 360, and the PC version is said to be coming shortly. A brief flyover of the map in the teaser video shows a nice view of Arkham Asylum in the daytime, which looks only slightly less creepy than the night scenes of Rocksteady's game.

The map update doesn't include any new items itself, but Monolith has also released a "Steamy Punk Pack" with new costume elements, a jet pack, lightning rod, new Fun Facts and other additions. Like the Rodeo Pirate Pack, it costs $5.