Numpty Physics is a drawing puzzle game in the spirit (and style?) of Crayon Physics using the same excellent Box2D engine. Note though that I've not actually played CP so the experience may be very different. Numpty Physics includes a built-in editor so that you may build (and submit) your own levels.
2D physics puzzle / sandbox game, in which you get to experience what it would be like if your drawings would be magically transformed into real physical objects. Solve puzzles with your artistic vision and creative use of physics.