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In a live, interactive competition, contestants battle one another in bouts of trivia around the clock for 12 days and nights. The reigning champions -- the four players who have remained in the game the longest -- live in an hourglass-shaped structure in New York, where they are able to play along with the game for up to two weeks as others try to unseat them during the prime-time show. Viewers have the opportunity to play along at home and get the chance to be on the show themselves. In the end, one player leaves with a cash prize of up to $10 million. Wikipedia