More interesting game Head Fu is released. This app comes free.

Wonderful gravity game!
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DingJi is a time-honored kind of acrobatics in China.

Firstly, keep your iPhone or iPod Touch straight up. Secondly, the object on the head of the acrobat player will attend to fall down for gravity; you need continually lean your iPhone or iPod Touch to the opposite direction to the falling direction. Keep the object on the head for several seconds, you can pass this level. The next level will add more objects on the head.

Different place has different gravity value, which makes the game easy or hard. Only after finishing all the levels on low-gravity places, you can begin on high-gravity places.

You can change the acrobat player through setting, you can find your position in the global ranking.

source : itunes.apple.com