

In early 2020, in-development builds of Ghost's Xbox version leaked online, showcasing the game's development around 2003-2004.A playable build of StarCraft: Ghost, Blizzard's stealth action-shooter for the PS2, GameCube, and Xbox, has apparently leaked 15 years after its cancelation. In the interview, Morhaime stated that Ghost was cancelled to maintain Blizzard's standard of quality. In 2014, Michael Morhaime (CEO of Blizzard at the time) officially announced the game's cancellation during a Polygon interview about Titan, another cancelled Blizzard title. Nova and Horace Warfield, two characters intended to star in Ghost would later make appearances in Starcraft II: Wings of Liberty. Many at the time drew comparisons to the cancellation of Warcraft Adventures: Lord of the Clans, due to Blizzard announcing the game's cancellation but releasing its storyline as "Warcraft: Lord of the Clans", a standalone novel. Interestingly, following the announcement, Blizzard released "Starcraft: Ghost - Nova", a novel following Ghost's intended protagonist. This led the game to become one of the longest-running vapourware titles in gaming history, with many considering the game to be cancelled. In 2006, Blizzard stated that StarCraft: Ghost was officially "on hold". Following Swingin' Ape's acquisition, Ghost's GameCube port was cancelled. Following Nihilistic's departure from the project, development was handed to Swingin' Ape Studios, who would be bought by Blizzard a year later.

However, the game saw numerous delays until Nihilistic Software, who had been brought in specifically for work on Ghost, discontinued working on the project in 2004. Following the success of Starcraft, Blizzard Entertainment began production on StarCraft: Ghost, a spin-off which would have followed a third-person stealth-shooter approach in the vein of the then-popular Metal Gear Solid and Splinter Cell franchises, starring a ghost operative named Nova.
