Moons & Planets is the perfect next-level companion to our Mineral Matching Game. MMRY uses amazing photos of the Planets and Moons of our Solar System, printed on large chunky discs. It looks and feels great. Contains 46 moon and planet tiles & a guide book explaining each moon and planet in the game. Educational, beautiful and tactile! What more could you want from a memory game? Know your solar system! Pluto has been added back by popular demand. All in an sturdy, elegant 4" x 4" x 3.5" storage box.