Warner Bros og Square Enix er kommet med en mindre opdatering til PC spillet Batman: Arkham City. Spillet benytter den populære Unreal Engine 3, og blev frigivet den 21. oktober 2011 i Danmark.

• Occurences of Save File Corruption
• Achievement re-locking issues
• Crossfire/SLI Issues
  - Graphical flickering
  - FPS improvements when running crossfire
• Instances of 32 bit memory problems
• Improvements to performance in cut scenes and death taunts
• Error messages removed when patching the game and improved patching process