Sonic Jam 6

Sonic Jam 6 is a bootleg 1998 platformer for the Mega Drive, released exclusively in Taiwan by Gamtec. This unofficial title is essentially a hacked version of Super Mario Bros. with stolen graphics, simply replacing Mario with Sonic. The blue hedgehog starts red but turns blue after grabbing a Super Mushroom. While menus and title screens were altered, leftover Mario elements like his face in bonus areas remain, making it a curious piece of gaming piracy history.