ソニック・ザ・ヘッジホッグGG Game Gear, 1991 Sonic The Hedgehog ソニック・ザ・ヘッジホッグ Also released in North America and Europe. PlatformGame Gear Released in Japan28 December 1991 PublisherSega Product codeG-3307, G-3334, 2408 Mediaphysical Other regions North America Sonic The Hedgehog December 1991, Sega, physical Europe Sonic the Hedgehog December 1991, Sega, physical Add to my collection Open in Tana