Put your memory to the test with this space-themed rendition of the classic concentration game of matching pairs. With 24 pairs to match, Eeboo's Space Exploration Memory and Matching Game will test both your memory and your knowledge of our solar system and beyond, with facts ranging from Neptune's biggest moon and the Oort Cloud, to Sputnik and the Big Dipper! Fun for ages 5 and up. Eeboo is a woman-owned company. Made from 90% recycled materials with vegetable-based dyes.