ALPHA BLASTER
Alphablaster is a space shoot 'em up arcade game in 16 screens.  Destroy
Aliens by activating your blaster, dodge the projectiles they launch at
you and intercept as many fuel balls as possible. 
Loading instructions: RUN"CAS:"
Controls: joystick or cursor keys. 
left = left right = right
Activate blasters by pressing space bar/fire button. 
To help you on your way, here's an introduction to the first 3 screens:
1.  Aim at the Aliens constantly firing away at you.  Each Alien = 100pts. 
2.  The Aliens will attempt to surround you.  200 points for a hit. 
3.  You've reached the Astroid belt.  Avoid rocks and intercept fuel balls
(=100 bonus) for extra fuel.