Great
The 3D elements was really enough to make this game what it is, I think you also aimed for a Retro feel too, if so, you completed your task, however, what stops me from reviewing this game 10/10 - 5/5 - is the fact that it gets repetitive quite fast, and you can't seem to lose no matter how long you go on for.
I think what could improve this game, is to take the Retro graphics away and aim for something more realistic, and set difficulties - and yes, although this would destroy a highscore system, i think it needs it.
Overall - Not bad at all!.
GX