Mega Drive Software (without box&manual) SONIC THE HEDGEHOG 3, Game

Super Sonic (lost build of cancelled Sega CD port of Sega Genesis platformer Sonic the Hedgehog 2; existence unconfirmed; 1992-1993) - The Lost Media Wiki

Sonic hacks - Sonic Retro

A brief history of Sonic The Hedgehog on PC

Sonic 3 New Age Development Thread

Sonic The Hedgehog CD (Sega Master System), Fan Games 'n' Hacks Wiki

Where can I find SegaSonic The Hedgehog? I really want to play the game, but I need a safe download. : r/Roms

Sonic & Knuckles Collection (Game) - Giant Bomb

Sonic The Hedgehog - Triple Trouble ROM, GG Game

Sonic the Hedgehog 3 (World) SEGA Genesis ROM Download - CDRomance

Sonic the Hedgehog (Prototype) : SEGA : Free Download, Borrow, and Streaming : Internet Archive