Batman – Arkham City: Game reference in Arkham Asylum
When you are at the Warden’s Office, go to the area where the Warden’s portrait is hung on the wall. This is on a far wall. Make a sharp left immediately after you enter the doorway and approach this wooden wall. You can blast this with your explosive gel. It will probably take a bit of trial and error but a panel can be blasted away. Beyond this panel is a room. There is a blueprint hanging on the wall. The blueprint reveals plans for the expansion of Arkham Asylum into Gotham City. This is your easter egg – it shows the setting for the sequel, Batman – Arkham City.

Batman - Arkham City : The Joker (Credit: youtube)






