Books by Ralph Koster
Ralph Koster
Average rating 3.88 · 2,801 ratings · 249 reviews · shelved 8,830 times
Average rating 3.88 · 2,801 ratings · 249 reviews · shelved 8,830 times
Showing 1 distinct work.
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A Theory Of Fun For Game Design
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published
2004
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19 editions
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