
Sonic X-Treme (found build of unreleased Sega Saturn video game 1996). Sonic The Hedgehog: Awakening (lost build of cancelled "Sonic the Hedgehog" game existence unconfirmed late 2000s). Sonic The Hedgehog 3 & Knuckles (lost build of cancelled iOS port of Sega Genesis platformers 2014). Sonic the Hedgehog (lost Winter Consumer Electronics Show 1991 demo build of Sega Genesis/Mega Drive platformer 1991). Sonic the Hedgehog (lost Tokyo Toy Show prototype build of Sega Genesis/Mega Drive platformer 1990). Sonic The Hedgehog (lost build of cancelled Sega CD port of Sega Genesis platformer 1992). Sonic the Hedgehog "2006" (lost complete build of Xbox 360/PlayStation 3 platformer 2006). Sonic Synergy (lost original build of "Sonic Boom: Rise of Lyric" Wii U action-adventure game 2007-2013). Sonic Sports (lost build of cancelled Sega 32X sports game 1995). Sonic Saturn (lost build of cancelled Sega Saturn prototype of platformer mid-1990s). (lost build of unreleased Sega Pico game existence unconfirmed 1994) Sonic Generations (lost game demo 2010). Sonic DS (lost Nintendo DS tech demo 2004). Sonic at the Olympic Winter Games (found iOS game 2010). Sonic Adventure New Year's DLC (found "Sonic the Hedgehog" holiday-themed DLC 1998). Sonic 3D Blast (found cassette demo tape of unused game soundtrack 1996). Sister Sonic (lost build of cancelled "Sonic the Hedgehog" localization of "Popful Mail" Sega CD side-scrolling platformer 1993). Shadow the Hedgehog (lost Teen rated version of platformer 2005). However, it’s theorized that these screenshots may have been faked, Spanish gaming magazine Superjuegos featured completely different screenshots of the port and user "RACCAR" on the SonicAges forum also posted screenshots of this version's demo, also dated June 1992.Ī ROM of the cancelled Amiga port can be found on, but it's currently unplayable as there is no known playable version of the demo. Additionally, the title screen depicts Sonic's "American" design as opposed to the Japanese version. Two screenshots have surfaced, both of which were sourced out of the aforementioned article and, based on these screenshots, the game may have had entirely new level designs and possibly even new levels, similar to the Game Gear version. However, it was never released, possibly due to disagreements between Sega and U.S.
Gold and would have likely been released in June 1992. In 1991, Italian gaming magazine The Games Machine had an article discussing the original Sonic the Hedgehog being ported to various home computers, mainly the Commodore Amiga. Advertisement for the game from an Italian magazine.