The secret room in Batman: Arkham Asylum

GameInformer: "Many players spent hours cleaning every nook and cranny of Arkham Asylum in the past year. However, there is one area that players did not even know about ... This is the Warden Quincy Sharp secret room, which contains blueprints and concept art for Arkham City. Below is a video that shows how it is possible to find a secret room.

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