This game is known in Japan as "Akkanvader" (translates from Japanese as 'Rogue-vader').
The game forbids the initials 'SEX' on the high score table. If you try, it gets changed to 'AAA'.
US version has the "Winners Don't Use Drugs" screen.
TIPS AND TRICKS
- Choose your craft.
- Move your ship left and right and press the Fire button to shoot the invaders. Destroy all the invaders on the screen to complete a level.
- If the invaders reach the bottom of the screen or you are hit by an enemy invader, you will lose a life.
- Hold down the Fire button to charge-up and fire a stronger missile.
- Shoot UFOs to get special items.
Rapid Fire: Enables rapid fire
Bowling Ball: The ball eliminates all invaders in its way
Bomb: Destroys multiple invaders
Time Stop: Freezes all invaders temporarily
Pilots: Dan & Mayumi
Charge Shot: A powerful shot that destroys multiple invaders in a column.
Pilots: Ben-Ben & Pen-Pen
Charge Shot: A germ attack that destroys multiple invaders.
Bucket / Corrugated Carton
Pilots: Harry & Nancy
Charge Shot: Guided missiles - steer them by moving the left thumbstick.
Pilots: Sayo-Chan & Miyo-Chan
Charge Shot: An explosive amulet that destroys multiple invaders.