Nice
As a noob of flash animations, I think it's not bad... As a player, there is place to upgrades... Especially the one where circles turns super quick, not easy to find out the two ones who are not at the good places... Else while stopping image, it wasn't really easy...
Images could be more detailed... try dropping a look at works of Ivorydrive (5 and 6 differences, you'll understand what I try to mean)