More than a dozen Batman-related domain names have been registered by Warner. Among them could be the title of Rocksteady's Arkham Asylum sequel.
Subtitles include Arkham City, Siege of Gotham, Grand Delusion, State of Villainy and Broken Ground, according to Superannuation.
And there are other names that appear to be destined for viral marketing efforts. These are Close Arkham City, People for Gotham, Stop Mayor Sharp, War in Gotham City and Where's Bruce Wayne.
Rocksteady hasn't yet lifted the lid on Batman: Arkham Asylum 2. So far we've seen a trailer starring The Joker and Harley Quinn, but little else. Batman actor Kevin Conroy has said the sequel will be "really, really dark".