Aliens Attack!

This is the game, where you kill aliens that attacked your planet! Kill them all!

Modifications:

1. Added asteroids that fall from top of the screen and tries to kill the player.

2. Added a storyline.

3. Added 3 comprehensive levels.

4. Improved design.

5. Changed the way starship is dying - now there is a 5 sec delay.

6. Changed the way player shooting - there is a cooldown between bursts.

Created by Victoria.