Fairly good
One thing i did pick up on is the fact that on some levels you could use your inventory items to just carry the ball to the basket instead of using the puzzle aspect.
A slight example of this was level 10. I used the bar to push the blue ball out of the way then caught the grey ball on it and carried it to the basket.
Also, occasionaly the ball would go straight through the pink platform it was supposed to bounce off.