Crayon Physics is a fascinating 2D physics sandbox/game, which came to my attention today when I was reading Sarinee Achavanuntakul’s blog entry about the sad HotU (Home of the Underdogs) demise and, more than welcomed, revival. Sarinee mentioned Crayon Physics Deluxe in her blog post, and I checked it out. What I saw in the flash video was jaw-dropping. Crayon Physics is not just an indie game, but imho a great educational tool in which you really get to experience “what it would be like if your drawings would be magically transformed into real physical objects”. I wonder, is there an open-source counterpart for creative use of physics?