Game Theory might be better described as Strategy Theory, or Theory of Interactive Decision Making. Astrategic situation involves two or more interacting players who make decisions while trying to anticipate the actions and reactions by others. Game theory studies thegeneral principles that explain how people and organizations act in strategic situations.
Game theory studies strategy mainly through the analysis of different "games". A "game" in game theory is a fully explicit structure which characterizes each player's set of actions, payoffs and possible outcomes under given rules of playing. Given this conditions, rational players act in such a way, that they maximize the expected value of theirvon Neumann-Morgenstern Utility. Games provide a simplified world within which to study strategy (as opposed to the real world where complexities get in the way of developing general principles).
1 Introduction to Game Theory
2 Nash Equilibrium
3 Mixed Strategy Equilibrium
4 Extensive Games with Perfect Equilibrium
5 Coalitional Games
6 Bayesian Games
7 Extensive Games with Imperfect Information
8 TV Game Shows
9 Politics
Wikipedia Articles on Game Theory Related Topics