Batman: Arkham Knight walkthrough and guide | Eurogamer.net
Batman: Arkham Asylum System Requirements | System Requirements
Who is this? I can't scan him for a riddle and he's the only inmate. I can't interact with him (Arkham Asylum) : r/BatmanArkham
Batman: Arkham Asylum (Part 21) - Difficult Scan of Question Mark - YouTube
In one of the secret riddler rooms (that you find with the batmobile scanner) inside the ace chemicals bridge, the doors are identical to the intensive treatment doors from asylum : r/BatmanArkham
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Batman: Arkham Asylum (Video Game 2009) - Company credits - IMDb
Batman: Arkham Asylum Walkthrough Saving Commisoner Gordon