Tucson Digital Arts Community

ARG stands for Alternate Reality Game, where a group of people (both offline and online) work together to solve clues and help move the story along. Most ARGs are 2 – 6 weeks in length and offer highly interactive story-telling where the players are indeed part of the story and help move it forward. More about ARGs can be found on Wikipedia (along with their origins).

http://en.wikipedia.org/wiki/Alternate_reality_games