Sonic The Hedgehog 3 1993 Box art by ClassicSonicSatAm on DeviantArt

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 The Hedgehog 3 » NES Ninja

Sonic Goes To Hell In This Devilish New Hack For Sonic 3 & Knuckles

Sonic_Knuckles_wSonic3.bin : Free Download, Borrow, and Streaming : Internet Archive

Sonic & Knuckles Collection (Game) - Giant Bomb

Sonic ROM hacks/mods

Sonic the Hedgehog ROM & ISO - PS3 Game

Sonic the Hedgehog KAI 改 (W.I.P Rom Hack of Sonic 1)

Switch Versions Of Sonic 1 And 2 Are Safe As SEGA Plans To Delist

Does anyone have the Sonic 3: A.I. R. Pink Edition? (The one with Amy, Cream, and Rogue as the characters) It's a Sega Genesis Rom hack : r/128bitbay