A free app for Android, by General Adaptive Apps Pty Ltd.

uu is an amazing game that has a simple, addictive, and fun concept. The game starts with you controlling a small ball that gets pushed around a two-dimensional platform. At the same time, you have to avoid different obstacles that are placed in your way. You can collect gems, which are used to unlock new balls and levels. The gameplay is simple and easy to understand, so even kids can easily learn how to play and get the hang of it.

The best thing about this game is that the gameplay is very easy to learn, but it is still challenging to master. So don’t be afraid to try and fail a few times, as you will learn from your mistakes and improve in the future.