Game Mod was a six hour long workshop with the objective of showing the participants that it is not required to understand code to experiment and play with it. Although they had no experience in coding, the task of each participant was to make a mod (modified version) of a game built in Processing.
(you can download the code for your own modding purposes at game mod)
also from the leader of the workshop, Steph Thirion: my favorite game on the iPhone/iPod Touch platform, Eliss