Starmaster.  I don't understand this game.  So far, all I've figured out is that there are 4 variations.  It's a first person perspective game that looks like that screen saver for the computer where the stars fly past you.  You have a time limit.  You can shoot and every time you shoot, your time goes down faster.  I have yet to see anything that you can shoot at.  I'm sure this game would make a lot more sense if I had the instructions, but as it is, I just don't get it.  Easy to find cheap.