Graviturn app for iPhone and iPad

Graviturn?
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Graviturn is an addictive game with very few rules and an unlimited amount of levels to play through. It is based on the game with the same name available on the Android platform, developed by Florian Heft. Florian, thank you for assisting me with the iOS version.

How to play
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- There are infinite levels (generated randomly), continuously getting harder
- Levels consist of static walls and rolling balls
- Remove all red balls from the screen
- ... but keep the green balls (they must not leave the screen!)
- Do so by tilting your device
- Compare your performance with other players at the end of each level
- Beginning with level 10 you can add or remove walls by tapping on the screen