Back in 1976, fledgling philosopher John Immerwahr authored an article called "The Hobbes Game," describing a role-playing game around the famous "prisoner's dilemma" model as a way of teaching Hobbes' argument about the state of nature.  It can now be revealed that Immer published this largely as a way quick and dirty way to pad out his resume before going up for tenure.  Amazingly, it has had a remarkable shelf life, inspiring several other articles and games. He often meets people who tell him that they use the game in their classes. Actually Immer himself now uses a more simple version of the game called "the Swedish Fish" game.  At any rate, we have an entry with the simpler game and references to some of the other articles.