Sonic & Knuckles Collection (USA) : Sega : Free Download, Borrow, and Streaming : Internet Archive

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 (1991 video game) - Wikipedia

Sonic the Hedgehog 3 (1994) - Download ROM SEGA-GENESIS

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

Sonic the Hedgehog 3 (Nov 3, 1993 prototype) - Hidden Palace

Sonic The Hedgehog - Triple Trouble ROM, GG Game

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

Sonic 3 & Knuckles / What Could Have Been - TV Tropes

Sonic The Hedgehog 3 (Sega Genesis) 48-Bit 1200dpi Manual + Cart

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