Master System

The Master System is an 8-bit home video game console manufactured and developed by Sega. It was originally a remodeled export version of the Sega Mark III, the third iteration of the SG-1000 series of consoles, released in Japan on October 20, 1985. The Master System was launched in North America in September 1986, followed by Europe in August 1987, South Korea in April 1989, and Brazil in September 1989. A Japanese version was launched on October 23, 1987, with additions including a built-in FM audio chip, a rapid-fire switch, and a dedicated port for the 3D glasses. The Master System II, a cheaper model, was released in 1990 in North America, Australasia, and Europe.

The original Master System models use both cartridges and a credit card-sized format, Sega Cards. Accessories include a light gun and 3D glasses that work with specially designed games. The later Master System II redesign removed the card slot, turning it into a strictly cartridge-only system, and is incompatible with the 3D glasses.