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Sonic the Hedgehog (1991) | Sonic Wiki Zone | Fandom - Sonic …
Sonic the Hedgehog (1991 video game) - Wikipedia
History of Sonic the Hedgehog by Sega Genesis - Lifewire
The Complete Story of Sonic the Hedgehog: 30 Years at …
The History of Sonic the Hedgehog: The Genesis Era - LevelSkip
Sonic World :: Game Info Archive :: Sonic the Hedgehog (1) (Genesis)
Sonic the Hedgehog (1991) - MobyGames
Sonic The Hedgehog - Sega Genesis - Games Database
Sonic the Hedgehog [1991] - IGN
Sonic the Hedgehog (1991 video game) - Wikiwand