Sonic the Hedgehog (videogioco 1991 16-bit) - Wikipedia

Sonic the Hedgehog Genesis, Sonic Wiki Zone

Sonic 1 Hedgehog - [Megadrive FR] 16-bit Cartridge Sega 1991, sonic 1991

Sonic-16 (non-existent build of unreleased Sega Genesis/Mega Drive game based on Sonic the Hedgehog animated TV series; 1993) - The Lost Media Wiki

Sonic the Hedgehog 2 - Wikipedia

Sonic the Hedgehog 2 (8-bit)

Sonic Mania - Wikipedia

Sonic the Hedgehog 2 (8-bit), Sonic Wiki Zone

Sonic the Hedgehog - Wikipedia

Sonic the Hedgehog (film) - Wikipedia

Sonic the Hedgehog (8-bit), Sonic the Comic Wiki

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