Eidos is planning on giving guest tours of the dark halls of Arkham as the demo for the long-awaited Batman: Arkham Asylum has been announced today. To be released this Friday, August 7, the demo begins with the Dark Knight and Gordon delivering The Joker back to Arkham. Of course, shortly after all hell breaks loose and Batty will have his hands and legs full as he uses the free flow combat system (check the vid above to see it in action) to beat up the inmates and make the player feel completely badass (superbadass?) in the process.

The demo will hit all PC, Xbox 360 and PlayStation 3, and will be followed by the full game on August 25th in North America and the 28th for Europe.