Physic Line: Brain On It - a straight line create the world.
You have to draw one or more lines to put the ball into the U. The ball and straight lines react to the law of gravity.
There are many physical cases for you to practice and test your physical knowledge. 45 levels are 45 puzzles with increasing difficulty so you can comfortably imagine and creative.
Join the Physic Line: Brain On It to draw your world!