The Sega CD is an add-on peripheral for the Sega Genesis video game console that was released in 1991. It was developed by Sega as a way to enhance the capabilities of the Genesis, particularly in terms of audio and storage capacity.
The Sega CD was designed to be plugged into the cartridge slot of the Genesis and added a new CD-ROM drive to the console, as well as additional RAM and a new audio processor. This allowed games on CD-ROM to be played on the console, and improved the audio quality of games that used the CD format.
Some of the most popular games on the Sega CD included titles like Sonic CD, Night Trap, and Lunar: The Silver Star. The Sega CD also featured a number of full-motion video games, which were a popular genre in the early 1990s.
The Sega CD was not a commercial success, due in part to its high price and limited library of games. However, it was an innovative and important step in the evolution of video game consoles, and paved the way for future consoles that would use CD-ROMs as a primary storage medium.