MOVE WITH ARROW KEYS SHOOT WITH SPACE AIM WITH "A" AND "D" DONT LET ALIENS HIT THE GROUND (they are slowly coming down) DONT LET ALIEN THAT COMES OUT OF UFO TOUCH YOU (there is a ufo that spawns an alien that will attack you...also they give 3 points) SPACESHIPS ARE HUMANS TRYING TO ESCAPE...DON'T SHOOT THEM!!!(you will lose point) GOOD LUCK =D
Time-How long you have defended Earth Highest Time-The longest Earth survived Score-How many Aliens you have killed High Score-The highest amount of aliens have been killed =D
