very nice!!!
didn't get in the high score but it's still a very nice game!
I like the idea of playing the aliens! Very nice! Maybe it's because of me being one... :)))
The only thing that might be worth thinking about is the other planet... i.e. I would suggest it to be the mother space ship etc. This again one could fly in the next level back to the alien planet... As the game is still very short! I think.
Another suggestion: If one could buy a bigger tractor beam or more life etc. after each level from the points...
Anyhow keep up the great work!