In this cooperative quiz about The Three Investigators , you ll need plenty of knowledge about the books, audio dramas and cover art of the beloved series. Each game consists of 20 questions. For every correct answer we move one step forward; for every wrong answer the opponent advances zero to four steps. In the end, we need to stay ahead to win the game together. During the game, we can also earn jokers and use them whenever we need a little help.

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