Free play mode: Enter the adjust settings menu from the main menu.
Select the "Miscellaneous" option, and highlight the
"Credit Limit" selection. Hold
+
+
+
. The phrase "Free Play"
will appear to confirm correct code entry. If the game settings
are saved, free play mode will also be included.
Sixteen credits: Set the credits to nine and start the game using controller
two. Immediately press
on controller one when player
two's ship launches. Allow player two's ship to be lost. Player
one will now have sixteen credits.
Unlimited continues (Japanese version):
Press
during the game over countdown.
Mission select: Enter the difficulty menu from the settings menu. Hold
+
+
+
+
.
Hidden options: Hold
+
+
+
during a game to display a hidden options menu. The screen resolution,
position, and other options may be adjusted.
Demo control: Hold
to control the ship during the Raiden
I demonstration. Hold
to control the ship during the
Raiden II demonstration.
Power-ups: Find the slightly off color trees that are not initially
destroyed by your ship's fire power. They are usually located
on the right side of the screen. Approach these trees and keep
firing into them until they explode. Capture the pixie that flies
out of the explosion. When your ship is destroyed, a group of
power-ups will be released.