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Continue to ChatGamasutra: Defining Games: Raph Koster's Game Grammar https://www.raphkoster.com/2007/10/19/gamasutra-defining-games-raph-kosters-game-grammar/
Gamasutra: Defining Games: Raph Koster's Game Grammar https://www.raphkoster.com/2007/10/19/gamasutra-defining-games-raph-kosters-game-grammar/