Please answer the following question: What type of details about raph koster can be gathered from the following bio? Bio: raphael '' raph '' koster -lrb- born september 7 , 1971 -rrb- is an american entrepreneur , game designer , and author of '' a theory of fun for game design '' . koster is widely recognized for his work as the lead designer of '' ultima online '' and the creative director behind '' star wars galaxies '' . from 2006 until 2013 he worked as the founder and president of metaplace -lrb- previously operating as areae and acquired by social gaming company playdom in 2010 , which was in turn acquired by disney -rrb- producing a facebook game platform .
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