* Smoke: When you first turn on your Nintendo, enter these codes. Hold
      LEFT + A at the Copyright Screen, RIGHT + B at the Williams
      Entertainment Screen, X + B at the Quote. If you do this right,
      Smoke will appear on the MK3 logo.
    * Kool Stuff: At the Title Screen, press SELECT, A, B, RIGHT LEFT,
      DOWN, DOWN, UP, UP
    * Kooler Stuff: At the Title Screen, press UP, UP, DOWN, DOWN, LEFT,
      RIGHT, A, B, A
    * Scott's Stuff: At the Title Screen, press X, B, A, Y, LEFT, DOWN,
      RIGHT, DOWN
    * Sound Test: At the Title Screen, press A, Y, B, X

Cheats contributed by Martin Strohmeier - Martin.Strohmeier@t-online.de