Great graphics and cool space effects...
... but there seemed to be something wrong with the detection of hits. For one, hitting enemies only seemed to work sometimes... either that or you didn't provide a way to display that an enemy had been hit except only every so many hits. I also couldn't tell when my own ship had been hit... I wasn't even sure wherre the health-bar of my ship was located on the HUD during the entire couse of the game! So when I died it was kind of a surprise. A walk-through of the HUD features would have been good besides the key-controls. Other than that, pretty good stuff.