ソニック・ザ・ヘッジホッグMD Mega Drive, 1991 Sonic The Hedgehog ソニック・ザ・ヘッジホッグ Also released in North America and Europe. PlatformMega Drive Released in Japan26 July 1991 PublisherSega Product codeG-4049 Mediaphysical Other regions North America Sonic The Hedgehog 23 June 1991, Sega, physical Europe Sonic the Hedgehog June 1991, Sega, physical Add to my collection Open in Tana