It's a pretty simple game and there's not much to it, but it's fun. It's fun trying to beat the other users scores. So good job putting the scoring system in. The graphics and animation were good.
It was a little hard to tell when your power up ran out. Maybe you should put a time bar at the top for when you have a power up.
Overall it's a pretty good game. It's not very addicting though. It's fun for a few minutes.