Ghostbusters (World) (v1.1) is a slightly later version of the Sega Genesis Ghostbusters game, likely an update or revision of the original 'World' release. Details are scarce regarding the exact changes introduced in version 1.1, but they might involve bug fixes, balance adjustments, or minor gameplay tweaks. The development would still stem from an officially licensed company, adding to the 'World' version.

Ghostbusters (World) (v1.1)

Ghostbusters - Special Edition v1.2a (Ectoplasm)