Version 1.2

- Modified so that 3 fighter jets can appear on screen at once rather
than one - one was too easy.
- Added Lives and Score - lives go down by 1 each time the player
collides with a fighter jet, and score goes up by 100 each time the
player abducts a human.
- After the player reaches 500 points, the game will get harder - aliens
will appear and the player must avoid abducting them - if the player
abducts an alien, they will not lose any life, but they will lose 50
points.