EZ RotaryBall是一款通过重力感应控制不同颜色的旋转小球，并让与其相同颜色的小球碰撞的游戏.随着游戏时间的增加,游戏难度也会变得越来越大。游戏中同时伴有多种道具，例如让球体变大、转向、减速、间距增长等。简单的规则，却能考验身手和反应,是一款非常耐玩,消磨时间的游戏!
EZ RotaryBall uses the iPhone accelerometer to control the movement of the color balls and let all the same color balls collide with each others. When elapsed time increases, difficulty will also be increased, e.g. balls’ size increasing, direction changing, speed deceleration, distance changing and etc. It is simple but challenging to your responsiveness. It is also playable and time killing.