1) TOO MANY AD INTERRUPTIONS!!!!
2) After some reasonable number of attempts (20? 25?), you should make it possible to move on to the next level!!! [I HATE level 16 with the "spokes".]
3) Other games that I like, I sometimes go back and play other/early levels again. You need to make this possible.
Some changes like this and I would rate this game higher AND play it more. In general, I like the game, but theses annoyances mean that I play it A LOT less than other games.
Jen YY about aa 2