Fast and easy strategy game, one of the best-selling games of all time, tests the guessing skills and strategic thinking of children and adults alike. It is a game for two players where players take turns setting up and deciphering codes, and there are over 2,000 possible combinations to make each game unique. Strategic intelligence brain toy, helps improve children's logical thinking and reasoning skills, and the learning opportunities are endless. Games help promote family time and parent-child interaction. Portable, the board measures only 7 x 3 x 1 inches for easy storage.