Sega

Sega is a multinational video game software and hardware development company, that is headquartered in  Ōta, Tokyo, Japan. The company had success with both arcades and home consoles, but on, officially left the consumer console business and began concentrating on software development for multiple third-party platforms.

Consoles

 * Sega SG-1000: Available in limited markets
 * Sega SG-1000 II: Updated version of the SG-1000, includes a keyboard
 * Sega Mark III: Available in limited markets(Japan/Australia/New Zealand)
 * Sega SC-3000: A computer version of the SG-1000
 * Sega SC-3000H: An updated version with more RAM and keyboard (the original keyboard was of the low-end membrane type).
 * Sega Master System: Essentially the same as the Mark III only with a different name and a few minor adjustments
 * Sega Master System II: An update to the Master System with a new smaller redesigned frame, as well as inbuilt game "Alex the Kidd in Miracle World.
 * Sega Mega Drive: Known as the Sega Genesis in North America due to another company owning the Mega Drive trademark in that region.
 * Sega Mega-CD: Known simply as the Sega CD for the North American market, it allowed CD based games as well as Audio CDs to be played on the Mega Drive.
 * Sega 32X: Hardware update to the Mega Drive allowing 32-bit based games to be played
 * Sega Multi-Mega: a portable CD player with the functionalities of a Sega Mega Drive and Sega Mega CD. Following the Mega ... brands, its name was Multi-Mega in most of the world and Genesis CDX in North America.
 * Sega TeraDrive: A 16-bit PC with an integrated Mega Drive. Came with a Software Development Kit to allow creation of Mega Drive games. The system was only released in Japan.
 * Sega Neptune: A Sega Mega Drive/32X hybrid. It never passed the prototype stage. Only two empty cases are known to exist.
 * Sega Saturn: Sega's other 32-bit console released before the 32X in Japan, but after the 32X in North America and Europe.
 * Sega Dreamcast: First 128-bit (sixth generation) console, also Sega's last console.
 * Sega Pico: an educational gaming system.
 * Sega Advanced Pico Beena: Successor of the Sega Pico
 * Amstrad Mega PC: Although not actually produced by Sega themselves, the Mega PC is Amstrad's version of the TeraDrive for European and Australian markets, thus includes electronics for Sega's Mega Drive console built-in.

Handhelds

 * Game Gear: Sega’s 8-bit handheld
 * Sega Mega Jet: A Mega Drive unit, originally only available on Japan Airlines flights
 * Sega Nomad: Sega Mega Drive in a portable unit
 * Sega VMU: Memory Card for Dreamcast, also able to download games
 * Sega Vision