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
lifes 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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