Blizzard has never issued DMCA takedowns for Ghost prototypes, likely because the project is canceled and no commercial value remains. However, distributing or downloading unfinished intellectual property is technically illegal in many jurisdictions. Emulation communities typically operate on preservation grounds.
The term "ISO" refers to a disc image file of the game. In early 2020, an early, unpolished build of the game—intended for the original Xbox—was uploaded to various file-sharing sites. starcraft ghost iso hot
The game is buggy. To make it run smoothly: Blizzard has never issued DMCA takedowns for Ghost