Collection: Sega Master System
The Sega Master System (know as Mark III in Japan) was Sega's step into the gaming world, in 1986. Sega also released the 'Sega Master System II' in 1991, to serve as a 'budget console' to those who could not afford a Mega Drive/Sega Genesis, which was initially released 2 years before, in 1989.
Before the Master System, there was Sega SG-1000, SC-3000, and Sega Mark III. Unfortunately none of them are a commercial success.