Drawtopia - Physics Puzzles is a fun game of logic where you have to solve puzzles in a rather uncommon fashion: by directing a ball toward the exit using your own drawings.
The gameplay is simple: there's a ball that you have to get from one point to another while collecting all the stars you find along the way. To get your ball to its destination without leaving anything along the way you have to draw the path it should take. Make sure the inclination of the curves or any of the lines is flat enough for your ball to roll down it without going off course.
At the start of the game you can do a few levels that will show you how you get yourself oriented once you start the game itself. Do make sure you know all the small tricks, rebounds included, to get to the end with all the stars.
