Addicting.
Well I guess I can say the gameplay was original, but overall it was bland. First, the gameplay needs a little work. It was too easy to accidently run into the wrong power-up, or too easy to dodge them. Depending on your patience and skill. Second, the game had no point to it. Sure it was nice and will keep you at it for like about 20 minutes, but there was nothing to play for. You just fly around collecting power-ups.
You could make it a platformer or at least make levels. Or even make a storyline, even if it has nothing to do with the game.
That way people will keep at it longer.