I think every game ought to have a target. But frankly I don't recognize indistinct mouse scrambling as a target, so I don't think it is a game yet. In the technical respect of using Flash, see how triangles love colliding to the frame edges.
Cute one. However I'm not sure about who is this game designed for - way too difficult for a kid, way too immature for a man. Moreover, physics should be tuned because the ball, err, cube bouncing against a paddle is really odd sometimes. Also I found stars hardly distinguishable against balls, uh, cubes. The stars have cute eyes.
The money amount is damn confusing! You can buy an ipod for three hundred bucks, but not an earth defence system, lol :D
But the game is overall okay. Liked. But I think graphics are way too sour. You can also double the number of levels, making the difficulty increasing smoother.