sorry, but it definately needs refining
the reactiontime is too slow, maybe kick that up a notch. there is nothing to do but destroy asteroids which gets pretty boring after 100 times. please, next time, could you maybe throw in some more controls, like bombs or something? also, punch in some baddies to shoot up, after all, what is a starfox game without some evil reptilian villans to shoot the hell out of?