Minimum System Requirements
IMPORTANT: Call of Duty®: Modern Warfare® 3 required to play this add-on content.
NOTICE: The following video chipsets are unsupported by Call of Duty: Modern Warfare 3:
NOTICE: This game is not supported on volumes formatted as Mac OS Extended (Case Sensitive)
NOTICE: Internet connection and acceptance of Steam™ Subscriber Agreement required for activation. See www.steampowered.com/agreement for details.