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	1.		Image from Amazon.com	A theory of fun for game design [electronic resource] / by Raph Koster. by Koster, Raph ebrary, Inc Publication details: Scottsdale, AZ : Paraglyph Press, c2005 Online resources: Click here to access online Availability: No items available. Place hold Save to lists Add to cart (remove)
	2.			A theory of fun for game design [electronic resource] / Raph Koster. by Koster, Raph, 1971- Safari eBooks Edition: 2nd ed. 2013 Online resources: Click here to access online Availability: No items available. Place hold Save to lists Add to cart (remove)

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