Sonic the Hedgehog (cancelled Amiga port of platformer series; 1992)
In September 1991, Italian gaming magazine The Games Machine had an article discussing the original Sonic the Hedgehog being ported to various home computers such as the Commodore Amiga. It was going to be published by U.S. Gold and would have likely been released in June 1992. However, it was never released, possibly due to disagreements between Sega and U.S. Gold.
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. Additionally, the title screen depicts Sonic's "American" design as opposed to the Japanese version. The sprite of the character in-game is closer to the Game Gear version, but appears to lack shading. Little else is known about the port.