Beam Invader

Beam Invader is a Space Invaders variant in which you control the beam cannon to fight off the invaders (ranging from 10, 20, or 30 points) coming down from side to side, if the UFO is shot down than mystery points from 0-1000 is awarded. When scoring 1500 points or more, you will get one more beam cannon added. If you get hit by the beam or fail to stop the invader from going down destroying the base, then a beam cannon is not only lost, but the game is over.