The enemy ships are a little small and hard to see. I would make them larger. In addition, rather than having one meteor fly back and forth I would have a meteor fly across the screen in a random direction every five seconds.
It is a steady moving pace and cool looking, but the ships are a little too small and the rocket just goes off the screen if it gets to close to the edge.
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/4
2019/12/5