This is a deck of 54 cards, with 27 possible matches. You can play by yourself or with friends. I think we all remember how to play this game but if you never have simply shuffle the cards and place them face down. Flip two over. If they are a match, keep them, and go again. If they are not place them back face down and it goes to the next person. Just try to remember what you have seen and where you saw it. :)