|Release date|| December 12, 1991 (JP)|
October 15, 1992 (NA)
|Media type||CD-ROM & CD+G|
The first version of the Mega-CD sits underneath the Mega Drive console and loads CDs via a motorized tray. A second version places a top-loading CD-ROM drive to the right of the console and is intended primarily for use with the redesigned Mega Drive II. Both versions of the Mega-CD are compatible with the initial two versions of the Mega Drive console, but not with the Genesis 3. There is also a Mega-CD module, used as an add-on device available for the Pioneer LaserActive system.