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点击屏幕左面，横线左面向上运动，点击屏幕右面，横线右面向上运动。横线倾斜时，红色小球会因为向下的重力作用而滚动。通过控制横线，推动小球向蓝色洞中运动。红色小球刚好运动到蓝色洞中，并且速度足够低，小球进洞，进入下一关。
小球和洞会越来越小，小球运动越来越灵敏。
横线只能向前，不能向后，你必须抓住每次进球机会。
Click on the left side of the screen, and the horizontal line moves up. Click on the right side of the screen, and the horizontal line moves up. When the line is tilted, the little red ball rolls because of downward gravity. By controlling the horizontal line, push the ball toward the blue hole. The red ball just moves into the blue hole, and at low enough speed, it enters the hole and goes to the next level.
The balls and holes get smaller and smaller, and the balls move more and more sensitively.
The line can only go forward, not backward, and you have to take every chance.