The Glass Bead Game Network

From the site:

Imagine a game, playable by anyone, anywhere in the world, over the Internet or on a board in the living room. This game focus on any topic imaginable: literature, movies, sports, history, music, mathematics, or many topics at once. This game's strategy is simple to understand and play, but nearly impossible to master. Communities center around the game, discussing possible moves. Well-played games bring respect to the players. The game evolves according to the input of those who play it. A game can be played in a single sitting, or can extend over nearly a month's time. Teams can play against other teams. Text, pictures, music, and video all play a part in the game. The single most important skill in the play of this game is imagination - the ability to envision links between ideas, and connections between concepts.