With more than 55 million units sold, Mastermind is a great strategy board game and one of the world’s most popular games ever. It’s easy to learn and fast to play, and with more than 2,000 possible codes, it’s different every time. The Codemaker sets a secret code, and then the Codebreaker tries to match the code using logic, deduction, and maybe even a little bit of luck. After each move, the Codemaker gives clues to the Codebreaker. Make the code even more devious by using multiple pegs of the same color or by leaving one or more peg holes empty. With so many possible code combinations, every game is guaranteed to be a brainteaser.