Miss your old Sega games? Now you can play Sonic the Hedgehog version 1.0 online for free with this download! Play Sonic as he speeds his way through the loops, gathering as many rings as possible. At the end, you will have to defeat the evil doctor villain to win the game. Sonic is beating the evil doctor because he captured Sonic's animal friends. Play the bonus levels and much more with this free, classic game download!