These "behind the scenes" videos are becoming pretty popular among video game marketing types, probably because sites like ours tend to post them with regularity. But, that is a discussion for another day. Check out the below developer video for Batman: Arkham Ayslum. From the looks of it, Rocksteady were big fans of BioShock and tried to apply some of the same ideas regarding location and atmosphere found in Rapture and apply it to the Batman universe.
Batman: Arkham Asylum is scheduled to be released on August 25, 2009 for the PC, Xbox 360 and PC.