U.S. Orders Only! Made with tetromino pieces which are based on the game Tetris, this puzzle game cube is fun and challenging. With strong magnets to hold the pieces together, this puzzle game is sure to keep your mind moving. To add another level of difficulty other than just making the cube are playing cards with different shapes to try to solve. The magnetic puzzle cube is perfect for anyone that loves challenging puzzle games but is also perfect just to make shapes. This cube is made with durable transparent plastic and has powerful magnets making it a great toy for kids or adults.