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Being clueless can be costly in this hidden-camera game show, which features a team of improvisation actors subjecting people -- contestants in this case -- to uncomfortable situations, which escalate in edginess as the game continues. Contestants begin with $500. If they don't recognize that they are in the middle of a prank by saying something specific like "Is this a TV show?" then they lose $100 per round, and each prank contains four built-in dilemmas. The sooner the marks figure out the ruse, the more money they win. Wikipedia