Magic pencil

This is a brain - burning things to understand the puzzle game. Draw a line, become the trajectory of the ball, let the ball through gravity and you draw the track line, smoothly into the glass cylinder, so as to pass. During the movement of the ball, let the ball get scattered stars, so as to unlock more levels. There are 60 mind-burning levels of high difficulty waiting for your challenge.

Physics experts, burn your brain cells, to challenge the level!