Platform archive · Sega
Sega Master System
The SG-1000 Mark III arrived in Japan in 1985. Sega redesigned and rebranded the hardware for its 1986 North American launch, then supported multiple international revisions and long-running licensed production.
Hardware launch era1985
Physical games322
Documented packages322
Hardware variants5
SegaLaunch information
The platform’s opening chapter
- Hardware era
- 1985
- Launch region
- Worldwide
- Primary physical format
- Cartridge / Sega My Card
- First documented physical release
- October 20, 1985
- Latest documented physical release
- December 1998 · exact day not documented
- Special editions and variants
- 0
Hardware collector index
Colors, revisions, and special editions
Best-known releases
Platform-defining collector highlights
Complete physical checklist