Compatible emulators

Synopsis

Press button A for easy mode. Press the B button for hard mode. Press buttons A and B for a mix of both.
Your ship has landed on a hostile planet. Enemy ships attack your aircraft by firing homing missiles at it. Protect yourself by moving the energy shield to destroy enemy missiles. A point is lost as soon as a missile hits your ship. If your mothership (the largest at the top of the screen) appears on screen while the missile hits your aircraft, half a point is lost.
Fire missiles from the edges of the screen towards the ship in the center of the screen. The computer controls the device's energy shield. You have 300 missiles available. 1 point is awarded per missile that hits the enemy ship.
The maximum score displayed is 999 points.

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