The Sega CD was an add-on for the Genesis, released first in Japan as the Mega-CD in 1991 and then in North America in 1992. You still needed the main console. The CD hardware o…

The Sega CD was an add-on for the Genesis, released first in Japan as the Mega-CD in 1991 and then in North America in 1992. You still needed the main console. The CD hardware opened up much more storage for recorded audio, dialogue, animation, and video, which gave developers another set of options beyond a standard Genesis cartridge. This was one of those periods where companies were figuring out what to actually do with the extra space. Some put it into music and presentation, while others tried to build games around filmed scenes and choices made during them. That full-motion-video side gets a lot of attention when people talk about the Sega CD, but games like Sonic CD, Lunar: The Silver Star, and Snatcher are also part of its library. They used the format in different ways, with platforming, RPG storytelling, or an adventure built around investigating and talking to people. There were compromises, including loading and the limitations of displaying video through that hardware. Buying an add-on was another expense on top of owning a Genesis. The Sega CD is worth including in this history because it shows an early stage of the move toward disc-based games, before that became standard across so much of the console market.