Very nice twist on the Bust a Move[0] gameplay. It reminds me of something that the creator of flappy bird said about how he looks to develop games that can be played with one hand while waiting. The name, though, is not very good. Given that "Balls" is a generic word that is hard to search for and it can also be interpreted as inappropriate.

[0]http://www.neo-geo.com/reviews/neo-reviews/bust-a-move/bust-...