How to Play Alien Ambush!

When ready appears shoot to start playing. If you do not start within a couple of seconds, the game will start for you. Move your ship left and right shooting the aliens and avoiding their lasers. When you have destroyed all the aliens on a screen you will fly up to the next screen. The bar under your score tells you how many aliens remain. There is one line for each remaining alien.

The bar at the bottom of the screen tells you how much fuel you have left and how many extra ships are remaining. If you run out of fuel you will lose a ship.

Scoring:

Aliens:

100 points each. More the next time they appear.
200 points each. More the next time they appear.
300 points each. More the next time they appear.
400 points each. More the next time they appear.
500 points each. More the next time they appear.
600 points each. More the next time they appear.
700 points each. More the next time they appear.
800 points each. More the next time they appear.
900 points each. More the next time they appear.

The aliens are worth more the next time they appear. You also receive points for each asteroid destroyed while in the Asteroid Belt and a bonus for any remaining fuel when you dock with the Mother Ship.

You receive an additional ship at 10,000 points and every 50,000 points thereafter.

Note:
No additional ships are available in the demo version.