Mega Drive · USA
A combined Sega Genesis/Mega Drive and 32X prototype console intended to integrate the two add-ons into a single unit. It was shown in prototype form but never commercially released. The Neptune is best known from a small number of surviving prototype units and promotional material.
Hardware
Accepts Genesis region cartridges
Accessories
No peripherals recorded.
Packaging
The known prototype version, typically seen in black plastic and associated with development and trade-show demonstrations.