Prisoners' Dilemma is a "non-zero-sum" game studied by people in a variety of disciplines, including biology, sociology, and public policy. In this game, "how to maximize one's own payoff depends on the strategy adopted by one's partner." This website offers an interactive cyberspace version of the game -- essentially letting you choose to cooperate or compete with cyber partner known as Serendip and then posting the scores. Some references and articles give background information on "what's so important about this game." From this website, visitors can check out Serendip's other interactive exhibits, articles, links to other resources, and a forum area for comments on topics including Brain and Behavior, Complex Systems, Genes and Behavior, Science and Culture, and Science Education.