Note: An cartridge is required to use the following codes. Change the value of the indicated memory locations to adjust the corresponding game feature.
1. Real time clock; change both addresses.
Pause the game and type in "head like a hole" as a password. Return to the game to enable unlimited lives and level select. Press F1 through F10 to alternate between levels.
Type headlikeahole and press [Keypad Enter]at the high score screen after a game is over to enable cheatmode with unlimited lives. Note: A high score is not required.Press [F1] to [F10] to advance to the correspondinglevel. Hold [Shift] or [Ctrl] while pressing thosekeys to advance to higher levels.