Move the laser base using these
controls on the keyboard:
Space Bar = Fire laser
Left Arrow = Move left
Right Arrow = Move right
If you hit the UFO, you're rewarded
with a "mystery" bonus score.
It's game over after 3 lives,
or if the invaders overrun the
barracks. And you only get one
shot at a time, so make sure
you hit that target! Now ask
yourself... can you beat the
high score?
