Rubik's 4x4 was launched 20 years ago and is now a classic. It is NOT more difficult to solve than the original 3x3 cube, but it does require different techniques. Are you ready for a different twist on the Rubik's cube?
The Rubik's Cube's unique design makes it one of the most instantly recognizable toys of all time. With over 300 million cubes sold worldwide, the Rubik's Cube is a true icon that continues to fascinate puzzle fans everywhere.