Who wants an easter egg for Batman: Arkham Asylum?
To find the easter egg, you enter Arkham mansion and go to the warden's office. Turn right to the room with the stairsteps. Go spray 3 bursts of explosive gel on the left wall by the stairsteps. Exploding the gel will reveal a secret room. This room is not visible during detecive mode. On a board in the far right corner of the wall is blueprints and photos of Arkham city. On the prints, it says "Approved". This shows Rocksteady was already planning a sequel to Arkham Asylum. This sequel is Arkham City.
Asked about 1 year ago in Cheats & Codes