Choose Options from the main menu, then highlight the Sound Test option and listen to the following sound in order: 11, 31, 15, 5, 26 and 22. The word Cheat will appear at the top of the screen and a Level Number option will become available. Choose a starting stage, then return to the main menu and select Continue Game to warp to the stage you chose with cheat code in place, you can also access the following features during the game, by pausing and pressing the given buttons: