Planet codenames

From Sega Retro

After successfully launching the Sega Mega Drive, Sega commissioned several projects under different codenames of the planets in the Solar System. These are listed below.

Codename Equivalent
Sega Mercury Sega Game Gear
Sega Venus Sega Nomad
Sega Earth Unused
Sega Mars Sega 32X
Sega Jupiter Cart-based 32-bit system; abandoned in planning stages in favor of a disc-based system that became known as...
Sega Saturn Final name.
Sega Uranus Unknown, possibly unused
Sega Neptune 32X/Mega Drive combo unit
Sega Pluto Sega Saturn prototype unit featuring a different shell with a NetLink Internet Modem accessory built in. Only two produced. Uses US BIOS.

Furthermore, hardware released around the time the Saturn was had codenames based on Saturn's moons:

Codename Equivalent
Titan Sega Titan Video
Janus Sega Picture Magic

It is unknown whether the Sega CD, Sega Mega Jet, Sega Pico, arcade hardware, or any other Mega Drive/Saturn-related hardware had codenames.

By the time the Sega Dreamcast was planned, Sega had moved on to a new scheme.

Sega Home Video Game Systems
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11
SG-1000 SG-1000 II Mega Drive Mega Drive II
SC-3000 Mega-CD Mega-CD II Genesis 3
Sega Mark III 32X Dreamcast
Master System Master System II
AI Computer Game Gear
Pico Beena