Mr. Mysterio's 4 brain teaser puzzles will keep little ones entertained all day! This set from Rex International contains four metal ring puzzles: Keys of the lost kingdom Triangles of wonder Rings of Tutankhamun Circles of amazement Can you unlock the rings? Use the power of your mind to defeat the rings, or use Mr. Mysterio's sheet of instructions to learn the secret unlocking techniques. Baffle and bemuse your friends by unlocking the rings in front of their very eyes, everyone will be amazed!