This is probably the most fun I've had with a game of yours so far! I like the way each level is like it's own little planet. The movement from side to side is far from the smoothest, but otherwise the design seems carefully measured, each enemy just the right length apart, with new foes at just the right intervals, everything getting progressively more difficult as it moves on. Level 12 was probably the only one I died more than once though, but maybe that was just a fluke, it feels like a ladder of progression otherwise. Nice music, nice graphics, nice interface and everything! And you have a definite goal too. Keep it going!
-cd-