Level select
Hold [R] and press [Up]x9 on the title screen
when the current difficulty level is displayed. A sound will confirm
correct code entry. Begin game play and press [Start] to
pause. Hold [R] + [A] + [Select]. A number will
appear in the lower left corner of the screen. Press [Up]
or [Down] to select a level. Note: Select levels 11 through
17 to play one difficulty level higher than the one displayed
on the title screen.
Low volume music
Enter the BGM Test screen and play a selection. Press
[R] to lower the volume.
Alternate music
Enter the BGM Test screen and play a selection. Hold
[R] to lower the volume, and eventually the song will change
into an alternate version.
Full power-up
Enter [Down], [R], [Right], [Down],
[Right]x2, [Down], [Right], [Down]x2 at
the title screen. A sound will confirm correct code entry. Begin
game play and press [Start] to pause. Press [R], [Right],
[Down], [Y], [Down], [Right], [Down],
[Left], [Right], [Down], [Right]x2. Select
one of each weapon class by pressing one of the following buttons.
Note: Only one choice may be made for each weapon class.
| <CENTER>Button</CENTER> | Normal Attack | <CENTER>Button</CENTER> | Missiles and Bombs |
| <CENTER>A</CENTER> | Sky Laser | <CENTER>A</CENTER> | Homing Missiles |
| <CENTER>B</CENTER> | Ground Laser | <CENTER>X</CENTER> | Spread Bomb |
| <CENTER>X</CENTER> | Reflect Laser | | |
| <CENTER>Y</CENTER> | Spread Laser | | |
| <CENTER>R</CENTER> | Shotgun Bomb | | |