The PlayStation 3 and Xbox 360 versions of Call of Duty: Black Ops III were developed by Beenox and Mercenary Technology while the PlayStation 4 Xbox One PC versions of the game were developed by Treyarch. Due to the last generation consoles' inferior hardware significant changes had to be made.These changes include:- The campaign is not available.- Nightmares mode is not available.- Ground War is not available.- The Season Pass is not available- Only the bonus Zombies map The Giant and the Awakening DLC pack are available to download- Reduced graphics quality and performance