To enter, pause the game then move your cursor to the New Game and press C. Then type BURGER.
Press X during game play to display the optionsmenu. Highlight the "New Game" option and press C.The level password menu will appear. Enter one of the followingcodes and press P to continue the game. Note: APPLEIIGSwill also be accepted as a valid code, but has no effect on thegame.
Pause, move the cursor to New Game then press C then you can enter these codes.
Press C + A to display the map, and releaseA while keeping C pressed. Press the D-Padto move the map twice as fast as normal.
Go to the end of the first level. Instead of going through the exit, turn right and open a secret door in the corner of the wall. Then, turn 90 degrees to your right to open another secret passage. At the end, you will find the elevator to level 10.