Keys
 | Arrow up or space - Fire
 | Arrow down or M - Fire a missile
 | P - Pause on/off
 | S - Start the game
 | Left arrow - Move spaceship to the left
 | Right arrow - Move spaceship to the right
 | Escape - End the game currently playing |
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Instructions/rules
 | If the attacking spaceships comes all the way down to your
spaceship you lose two lifes
 | Bonus life's every 10000 points
 | When the ufo passes - try to hit it, when you do you gain 1000
points and a new missile
 | 500 points for completing each level
 | The attacking spaceships may have one more bullet on the screen
for each level, the game also moves faster
 | You may have 6 bullets on the screen at any time (and only one
missile) |
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