My first impressions were that the graphics were brilliant and the effects look really good. The music also enhances the game nicely. It was also very easy to pick up and play for a few minutes at a time. However, with only 9 levels, it's all over very quickly - I felt I had gotten everything I could from the game after a couple of hours, and the other difficulty settings were too hard for me. The extra challenges didn't add anything, as they basically just ask you to do levels again but without losing any lives, or getting a set score. If there were maybe twice as many levels, and an actual story, this game would be a must-have. As it is, it's probably worth it if you have the persistance to finish the harder difficulties.