Designing a game is, in essence, creating a system in which one or more players interact with the system by making interesting choices which influence the system - resulting in success or failure.  

This holds true whether the game is an economic ''game'' (more like a ThoughtExperiment), a board game (Monopoly), a card game (Bridge), or a ComputerGame (The Sims).  The format of the game influences the definition of ''interact'' and set limits on the scope of the system.
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CategoryGame