Wacky Races

The player controls Muttley through three different areas (Hip Hop, Splish Splash and Go Go America) which can be selected from a map screen, and all three must be completed to reach the game's ending. The first two areas have three stages each, while Go Go America has four. Each of the ten stages ends in a boss battle against one of the other ten racers, defeating one will clear the current stage and defeating all three/four in that area will allow progression to the next area. (wikipedia)