Have you ever wanted to, suddenly one day, you're upside down, feet tread on the ceiling?
Now, when you start after a period of magical adventures in space, the day has come. When you are on an unknown planet, gravity suddenly become so incredible, you gain the ability to reverse-gravity, you are not on the head up, feet down. You can easily fly to the top of the mysterious caves, and even, also rotated 90 degrees on a vertical rock wall of the cave. Don't worry, all these changes, can let you more easily find your spaceship and leave the unknown anti-gravity planet. But, before ending it all, you will face 30 elaborate cave level, across the deserts, jungles, even the illusion of hell.
Meanwhile, you have to beware of some of the obstacles you anytime, anywhere, some weird creatures. They are not scary. 
Take your courage, perseverance and dexterity of wisdom, start this incredible journey!

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KEY FEATURES:
1, Retro pixel style.
2, Amazing graphics.
3, Special gameplay to change the direction of gravity at any time.
4, Many interesting "enemys".
5, Two operating modes, full screen or virtual key.

Source: http://itunes.apple.com/us/app/gravity-field/id456624105?mt=8