This is a very fun and relaxing toy, until you try the game cards! Ivan's Hinge is a beautifully designed, geometrically-shaped, mechanical puzzle toy. It comes with 56 challenge cards, each with a geometric image for the user to reproduce. It's easy to flip and twist Ivan's Hinge into different angled designs and shapes, but it's not so easy to twist it into particular shapes.

The challenge cards vary in difficulty. There are enough simple ones to encourage younger users and enough difficult ones to engage more advanced ones. Our 11-year-old tester was definitely challenged by the puzzle cards, but not to the point of being discouraged. Like the Rubik's Cube, you can enjoy Ivan's Hinge without having to solve every single puzzle, but once you've solved one or two it's hard to put down. It's addictive.

Ivan's Hinge is engaging, well-designed, and easy to play with right out of the box. It consists of one solid durable piece, so there are no parts to lose.