[Android Game] Gravity Plummet

I have recently published my first game on the google play store. It is my first game that has actually made it out of the limbo which most of my games have made their home in.

The object of the game is simple, navigate the ball into the holes in the floor that are constantly appearing.
There are currently 3 different level types, Rectangle, Circle, and Bumpy. Within each level type there are varying difficulties.
Each level is unlocked by getting a score of 15 in the previous level.

You can access the game through this link:…avityPlummetAd

Trailer for game:

I am open to all criticism and if you think there is anything I can do to make it better please tell me.