The controls in Rolling Sky are very simple: just press the screen at the top and move your finger in the direction you want to move the ball, avoiding all the obstacles that appear along the way.
The game has several different levels where both the style and the difficulty of the obstacles vary. On the first level, for example, there are a few traps that are hard to dodge, but the third level is absolutely full of them, so you'll need cat-like reflexes to survive.
Rolling Sky is an action-packed game with a fun gameplay and simple but nice graphics. The game also has several different levels that come unlocked from the beginning.