I have Numpty Physics on my Nokia n800 internet tablet, and Crayon Physics on my HP TouchSmart PC. Both are designed for single touch, and are fun to play. Since my TouchSmart can handle duo-touch input, I wondered what Crayon Physics might be like if it supported two players at once.
As you can see from the video, Thomas Perl and his colleagues have figured this out- at least with Numpty Physics!
The music is worth the watch. It's by Triplexity.
Numpty Physics and Crayon Physics both use the Box2D engine. Here is some information from the website:
"NuMTyPYsics are our enhancements to Tim Edmond's NumptyPhysics game. We added support for receiving TUIO messages from tbeta via PyTUIO by embedding an Python interpreter into the NumptyPhysics code. Currently, we simply emulate mouse input by pushing hand-crafted input events (SDL_Event) onto the SDL event queue (SDL_PushEvent). In the future, we plan to do bi-directional communication between the game engine (written in C++) and our multi-touch handling code, which will be written in Python." -Thomas Perl
I've use Crayon Physics Deluxe with several of the students I work with who have severe autism. It is amazing how well they can figure out solutions for the levels. It would be even better if it could be enabled for duo-touch. It supports joint attention, which is a very important social interaction skill for young people with autism to develop.