Type scrap 28 at the options screen to enable
cheat mode with unlimited lives. Press [Keypad 0] to [Keypad
9] to select a level. Press the function keys to slow the
game down by different amounts. Note: Cheat mode in early versions
of the game is activated by pressing [Help] + Fire
at the options screen. If the message "Congratulations!,
you have found the cheat mode... unfortunately it has been ZZAPPED"
appears, go to the control selection, press [F10], type
scrap 28, then start game play.