This is really a magic trick although it is called a game. The approach is rather like the typical ‘Guess Your Age’ cards approach, but this is much more complicated. If you know the secret, you can tell a person which one of the 52 items they have selected from the MAIN GROUP card. All they need to tell you is which of the other nine cards include their selected item. The rest is up to you and arithmatic. Complete with instructions. The instructions explain the secret, but don’t tell you how to make a performance of it entertaining!