Rocksteady has released the demo for Batman: Arkham Asylum.You should be able to grab the demo on PS3, Xbox 360, and PC now,.We’re told that the 2gb PC demo includes the mentioned yesterday, but we’ve so far been unable to confirm this. The console versions, naturally, should be a bit smaller.So, have you played the demo now? Is it good? Are you interested? Then tell us so in the comments below, and have a look at to ramp up your excitement levels.