1. Start from anywhere in the game
2. Hold [Start] button
3. Press button [B]

A '?' should appear left of the level name and the score numbers start themselves listing at the left side of the screen.
To leave the score mode, re-enter the code

1. Start from anywhere in the game
2. Hold [Start] button
3. Tap [A] to increase enemy bullet speed / Tap [C] to decrease enemy bullet speed

The # number left of the 'round' shows the current bullet speed. Bullet speeds can be 7, 8, 10, 12, 15, 20 (default), 30

* The "[C]-less" version of this code works in Revision B only

1. Start from anywhere in the game
2. Hold [Start] button
3. Tap Joystick right

The current bullet color will be indicated right below the level name.

4. Continue tapping to choose between 6 different colors.

1. Start from anywhere in the game
2. Hold [Start] button
3. Tap Joystick left

The current bullet color will be indicated right below the level name.

4. Continue tapping to choose between 6 different colors.

1. Start from anywhere in the game
2. Hold [Start] button
3. Tap Joystick down

The current bullet color will be indicated right below the level name.

4. Continue tapping to choose between 6 different colors.

If you just hold the [A] button for auto shooting, you will recognize gaps in your "shooting stream". To create a more regular frequency, you can do this:

Start shooting by continuous pressing the [A] button (oldskool type) and change to holding the button later. So it memorizes your shooting frequency. Your autofire continues with the same speed you shot before by tapping.

1. Start from anywhere in the game
2. Hold [Start] button

The game will slow down. The message "slow !?" appears on the screen.

1. Start from anywhere in the game
2. Press [Start] button

The game will stop. The message "pause !" appears on the screen.
To continue just press [Start] again.

1. Start from anywhere in the game
2. Press both [Start] buttons together

The game aborts immediately and the end credits appear. It depends on your game mode (normal or advance) if this would be one character screen followed by the staff roll, or the chosen characters individual story endings.

To skip the credits press [Start].

1. Select 'Advance' game mode
2. Select 'Single Select'
3. Select Gain's Mahou ship from the guest players
4. Play without collecting any options until a 1UP item appears
5. Let the 1UP item pass
6. Collect the next option item
Your ship instantly morphs into a three times bigger version with a very powerfull weaponary containing Gain's typical sword laser as well as homing missile knives. This ship is called 'Galaxy Valhallyzer'

1. Start from anywhere in the game
2. press [B] button to release the razorblades
3. hold your joystick to the direction you want to throw the blades
4. press [B] button again
Instead of just rotating around your machine, the blades will move away from you to the chosen direction.

1. Start from anywhere in the game
2. hold your joystick to the opposite direction you want to aim the napalm attack
3. press [B] button

Instead of just forward, the napalm will be released to opposite direction you chose. This is helpful if you flee from enemies. So you can move to the right side (in example) and destroy your hunters with an aimed napalm attack to the left.