Play as sonic in one of my sonic series games, Sonic's biggest adventure. Sonic's girlfriend has been kidnapped by Bowser and his son, Bowser JR. This is what future Sonic's biggest adventure series have, the same type of levels. 1; beginner's. 2; enemy attack. 3; a level to the boss. 4; boss. 5; chase and 6; cut scene. that's what the next games have. like it please