It was hard for me to get into this game. What I didn't like was how there wasn't much detail put into it. I managed to detonate (or whatever) one of the red blasts, but I still lost. I guess the blast has to be far away from you. That just doesn't make any sense to me. I did, however, think the music was good. It helps that I've heard it before.
You should have a background. There can also be some better effects done with shading. The highest score I got was 3. Yeah, I wasn't very motivated to do better in it. There is just so much room for improvement.