The Isis

The Isis is a handheld puzzle in the same vein as the Rubik's cube. It has claimed to be "the most difficult puzzle in the world" and can cause hours of frustration for anyone who tries it. The Isis is an aluminum orb with hieroglyphics etched onto its outer shell.

The puzzle solver must line up the hieroglyphics using a set of clues provided. Once the Isis has been unlocked, it reveals an award section which allows you to claim prizes from their website. If you try and unlock the Isis using physical force, the award will be destroyed. The Isis was featured on BBC's Dragon's Den and is the brainchild of Andrew Reeves. The company also creates Isis puzzles used by companies to promote team building and management training.