Sonic The Hedgehog 3 prototype discovered and put online for all to enjoy

A piece of Sonic the Hedgehog history has made its way online after more than 25 years.

Steam Workshop::Sonic 3 Prototype

Sonic the Hedgehog (lost Winter Consumer Electronics Show 1991 demo build of Sega Genesis/Mega Drive platformer; 1991) - The Lost Media Wiki

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

Proto:Sonic the Hedgehog (Genesis) - The Cutting Room Floor

Unreleased Version 'Sonic The Hedgehog 3' Found

Sonic The Hedgehog 3 ( Nov 3, 1993 Prototype) : MeeiMekhi : Free Download, Borrow, and Streaming : Internet Archive

Sonic the Hedgehog 2 - Wikiwand

Sonic 3 & Knuckles' Was the Best Ending to Sonic's Golden Age

Proto:Sonic the Hedgehog (Genesis) - The Cutting Room Floor

Sonic the Hedgehog 2 (Simon Wai prototype), Sonic Wiki Zone