From site: Crayon Physics Deluxe is a 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.
LearningReviews.com note: This award-winning game can be used to help kids understand and build simple and compound machines and engage in creative problem solving. You can download the demo version to experiment with it. The cost for the full version is $19.95.
