Interesting.

This is one of those easy-to-learn-but-difficult-to-master type games. Nothing to learn, just click, pull and release. The trick is, figuring out the angles and plotting a course for the ball to end up in the cup. Simple in game one, but, as you go on, more and more obstacles are put in your way, and if the ball doesn’t make the hole in one shot, you try again. That’s where the frustrating part comes in. If you have little patience, go elsewhere.

Nibblegibble about Holes and Balls Free, v1.1