The SG-1000 marked Sega’s first steps into the market of home video game consoles in 1983. SG-1000 stood for Sega Game 1000 and it was a cartridge based system that was initially released in Japan. This console was not very successful however it became the basis of Sega’s next and more successful console launch,the Sega Master System.


The SG-1000 was initially launched in Japan and coincidentally it was released on the exact same day as Nintendo’s Famicom. This console was not overly successful although it sold moderately well in Asia until 1985. This console was never released in the United States however it was available in Australia, France, Italy, Spain, and South Africa. This system fell victim to clone consoles such as the Othello Multivision which released its own set of games and due to similarities with the ColecoVision Telegames produced a clone console in the U.S. which was capable of playing SG-1000 games as well as ColecoVision games.

SG-1000 II:

In 1984 Sega released an updated version of the console under the name SG-1000 II which was basically the same as the previous release however it included a new case and the port to include a SK-1100 keyboard was moved to the back of the console. This version of the console would not sell much better than the previous release and both would be outsold by the SC-3000 although SC-3000 hardware and software were mostly compatible with this console release.


The SC-3000 was the computer equivalent to the previous SG-1000 II release and was sold as a computer for beginners. This console was compatible with all previous software and hardware and in addition was capable of running computer applications which led to higher sales. Users were also able to develop their own programs and games on this console and several accessories including a speech synthesis unit, a light pen and others were developed for the console.

Sega Mark III:

This was the final version of the SG-1000 which would be produced and it would undergo a redesign which made it into the much more popular Sega Master System. This console had advanced graphics and greatly increased RAM capabilities.


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