The game was later ported to the Spectrum, Amstrad CPC, MSX, and Atari 2600. The last week of development was spent on the opening screen which plays the Ghostbusters theme song. While pleased with the game, Crane later stated that he regretted not being able to include a better victory screen. Activision obtained the license early in the film's production, and most of the game was finished by the time Crane watched the film. He based it in part on an incomplete game called Car Wars featuring armed automobiles in a city this led, for example, to the 'ghost vacuum' on the Ecto-1, something not present in the film. Most versions of the game have a similar basic format to the initial Commodore 64 and Atari 800 game, which Crane wrote in six weeks. Ghostbusters (Activision) on the Commodore 64 ( 1984). 16 Ghostbusters: Slime City (2016), mobile.11 Ghostbusters: Paranormal Blast (2012).10 Ghostbusters: Sanctum of Slime (2011).6.6 Extreme Ghostbusters: The Ultimate Invasion.6.4 Extreme Ghostbusters (pachinko machine).6.3 Extreme Ghostbusters Creativity Center.6.2 Extreme Ghostbusters: Zap the Ghosts!.5 The Real Ghostbusters (1993), Game Boy.4 Ghostbusters (1990), Mega Drive/Genesis.
