The Rainbow Fish Memory Game is based on the book by Marcus Pfister. This is fun game and also helps to build memory and attention skills. It's built on players turning over the cards two at a time and trying to find as many matched pairs as possible while trying to remember the location of the cards. There are 12 special rainbow fish cards. There are 72 cards, 30 regular picture pairs and 12 special fish cards. There are 20 with holographic foil stamping plus a handy storage tray. Beautifully illustrated and fun to bring the popular storybook to life. One of several excellent products in this series from this fine publisher.