Sonic Compilation

From Sonic - Wiki on Neoseeker

The Sonic Compilation is a compilation cartridge for the SEGA MegaDrive that includes the original Sonic the Hedgehog, the sequel, Sonic the Hedgehog 2, and Dr. Robotnik's Mean Bean Machine. Each game can be selected from the main screen, but to change to a different game, the console must be reset. It is the first out of Sonic's multiple compilations.