I absolutely loved the variety of enemies, weapons, and options in this. I feel like I could play it for hours. Even with a lot going on on-screen, the sprites are clear and bright enough that it's not hard to read. Also, I really appreciated the high-energy music! Though I felt like the sound balance was off relative to the sound-effects. Not sure if that was just me.
All in all, a really nicely executed spacey shooty game!