Defeat the alien invasion by destroying all 10 waves of enemy spacecraft and rescue as many refugees as possible!
A sideways scrolling shoot-em-up in the style of the ancient arcade classic "Defender".

Use Arrow or WASD keys to move
Press Z or M keys to shoot
SPACE key will pause the game

Please note - keep your mouse within the game window, or the game will be paused automatically... Bad thing, especially while the game hides mouse cursor...

Collect refugees who wave at you from the ground, fly over the runway in front of the tower where they'll drop off and run home.
Look out for the abductor UFO's which try to kidnap the refugees and transform them into cyborgs who will relentlessly track you down and harass you with photon bullets.
If you can catch a refugee dropped from an exploding abductor before he hits the ground you'll get some bonus points just for having style.

Exploding enemy ships eject bonuses of various kinds:
  - alien crew = 50 points
  - silver stars = 100 points
  - gold stars = 500 points
  - white crystals = score multiplier
  - blue crystals = shield
  - purple crystals = rapid fire
  - red crystals = extra life

You can ram or shoot the alien crew, all the other bonuses have to be collected. There are 2 levels of rapid fire - if you collect a second one before the first has run out you'll have very rapid fire indeed. Your ship is equipped with a tractor field so you only have to get close to a bonus and it will be sucked in towards you.