good work, but everybody can finish game and therefore player skill is not required and this is minus.

Not bad, but why do not use tweener for smooth moving? This is slideshow, but i thing, that this is good game.

Hmm. Why I am select mouse and i must fire with space? Why you are worst graphic for enemy and mothership is bettrer? Sorry, but control is terrible. If zou improve this staffs, this game will be good.