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Koster, Raph, 1971- (Personal Name)
A theory of fun for game design, c2005: t.p. (Raph Koster) prelim. pages (b. 1971)
Raph Koster's Website, March 15, 2006: (Raph Koster, Raphael Koster; b. Sept. 1971 in Long Island; online game designer, musician)