I like it - has potential !

It's a pretty fun game. I just think it needs some powerup items that pop up on the screen to go for (especially a speed-up), otherwise I tend to stay in one spot and blast away. Maybe put in a boss fight every few waves, that would be cool! I would have rated 5 stars for the pro interface but they only allow me 4. One thing I noticed is that the score doesn't reset to 0 after game over, it piles up from previous games -- an easy fix. I look forward to playing future updates. Overall 3.5 for now.