Unlimited energy: Turn on the NES, then hold Up + A and
press Reset at the title screen. Release the buttons,
then hold Up + B and press Reset. Release
the buttons and hold Down + A and press Reset.
Release the buttons and hold Down + B and press
Reset. Release the buttons and hold Left and press
Reset. Release the button and hold Right and press
Reset. Release the button and hold Select and press
Reset. Release the button and hold Start and press
Reset. Start your game to have unlimited energy.
View credits: The following code must be entered in a specific way.
Hold the first button, then hold the second button, release the
first button, hold the third button, release, the second button,
and continue the pattern. Press Up, Right, Down,
Left, Up, Right, Down, Left,
Up, Left, Down, Right, Up,
Right, Down, Left, Up, Right,
Down, Left, Up, Right, Down,
Left, Up at the title screen. If done incorrectly,
you must reset the game to try again.
Expert mode: Begin game play. You move to the right in a narrow
shaft. Look at the blue row of squares at the top. When the tip
of your ship is on the fifth or sixth column of blue squares,
hold Left to turn back. When you hit the invisible boundary,
hold A for about ten seconds. If done correctly, your energy
will increase to 255. Note: You may need to turn back to the left
from a different distance for this to happen. Then, press Reset
to start a game with higher difficulty. Everything will be green
to confirm correct code entry.
