Jeopardy first aired in 1964, created by Merv Griffin, and the Daily Double has been a core mechanic from the early years of the long running quiz show. Hidden behind the board, these special clues appear without warning and let the player who finds one bet their own score on a single answer. The distinctive sound became inseparable from that moment for generations of television viewers. Online, creators reuse the sting for trivia edits, classroom quizzes and surprise reveals, borrowing its built in sense of risk and reward.