Ghost Cube

Most people are familiar with the standard Rubik’s Cube and have likely picked one up before. However, few people are aware that there are hundreds if not thousands of different types of these twisty puzzles like the Rubik’s Cube. Some of the most fascinating puzzles are shape modifications of the original 3×3 cube. If you thought the normal 3×3 was hard, just take a look at what is called the Ghost Cube.

Designed in 2008 by Adam G. Cowan, the 3×3 Ghost Cube is thought to be one of the most difficult 3×3 shape modifications.

Difficulty: 4.5/5