I played it, but got stuck on level 26. And what was very annoying, that when you reach the level, you don't actually unlock it, and since there's no restart level button, I had to go to level select and start from the previous level, cause current level was still locked.
Also, some levels seem to be more luck-based, such as the one where you need to break through two purple tiles, you pray that the ball will have enough speed after bouncing from the tiles and the wall behind the cannon to collide with the tile to break it.
I'd probably also add a meter that shows the charge of the cannon, cause right now it's ambiguous: the cannon animation shows that it's fully charged, but the sound it makes sounds more like it's still charging.
Other than that, it's ok, I guess.