A very good game
i dont use to ewviwe but this game definitly deservs it
ok here are some suggestions
1.- you may want to make stars grey or some dark color, i died a couple of times because i mistake them for shots
2.- the first enemy had too many hit points reducing that would meke the game more fluid
3.- items to get back health, the blue thing and maybe missils
i hope that helps
i'll check out for the complete version