SEGA Forever 20th Oct 2021 11:51 pm

The SEGA Mark III launched in Japan 36 years ago today! 🕹ī¸

This hardware was the foundation for the Master System, and featured an expansion port that would later produce FM sound via the FM Sound Unit! 🔊#SEGAForever pic.twitter.com/7VYgFlXMeH

— SEGA Forever (@SEGAForever) October 20, 2021