Were you looking for Sonic the Hedgehog (Character)?
The original Sonic Game, released in June 1991 in both Europe and North America for the Sega Megadrive and then a few weeks later in Japan. Since then it has been ported to the Gameboy Advance, Sega Master System and Game Gearit has also been ported to mobile phones. It has been include in many compilations over the years and is still praised for its fun and exiting gameplay. It also has bonus features when played through the Sonic & Knuckles Cartridge. Sonic the Hedgehog was actually the last game ever released on the Sega Master System.