Beautiful. Smart. Deadly. Return to the time before the beginning. Shape the future. Perfect Dark Zero. Joanna Dark returns in the Xbox 360-exclusive ""Perfect Dark Zero,"" the prequel to the international award-winning and multimillion-selling first-person shooter ""Perfect Dark"" from famed game developer Rare Ltd. A secret war has begun between shadowy corporations bent on world domination. Joanna Dark and her father, Jack, are caught up in the fight for the planet's future. A routine bounty hunting mission rips open a global conspiracy that will change Joanna's destiny — forever.