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Jane McGonigal has distanced her work from the label " gamification " , listing rewards outside of gameplay as the central idea of gamification and distinguishing game applications where the gameplay itself is the reward under the term " gameful design " .
 Jane McGonigal
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Text: {0} 
Answer:
 Jane McGonigal