Remote control tank.
I have a tank I made but don't have a game to go with it yet. I am posting it now though because it demonstrates the use of UDP protocol for communication. It comes in 2 parts. The tank program I run on my iPad (https://gist.github.com/4141545) and the remote program that I run on my iPhone (https://gist.github.com/4142882). You need to change the host address in the remote control code to yours. You can also run the tank without remote by changing the remote flag to false. This shows the power of Pythonista. Try and do a remote control with Codea!
im very impressed with the quality of pythonista programs on the forums. looks impressive, give me a month... then i shall begin.