Rubik's Cube is a mechanical puzzle invented in 1974 lvl3.cfm?lan=eng&lvl1=inform&lvl2=medrel&lvl3=history" target="_blank">Rubik's Official Online Site by Hungarian sculptor and professor of architecture _Ernő Rubik. Originally called the "Magic Cube" by its inventor, this puzzle was renamed "Rubik's Cube" by Ideal Toys in 1980 and also won the 1980 German Game of the Year (Spiel des Jahres) special award for Best Puzzle. It is said to be the world's best-selling toy, with over 300,000,000 Rubik's Cubes and imitations sold worldwide.

In a typical Cube, each face is covered by nine stickers of one of six solid colours. When the puzzle is solved, each face of the Cube is a solid colour. The Cube celebrated its twenty-fifth anniversary in 2005, when a special edition Cube in a presentation box was released, featuring a sticker in the centre of the reflective face (which replaced the white face) with a "Rubik's Cube 1980-2005" logo.

The puzzle comes in four widely available versions: the 2×2×2 (Pocket Cube, also Mini Cube or Ice Cube), the 3×3×3 standard cube, the 4×4×4 (Rubik's Revenge), and the 5×5×5 (Professor's Cube). Even larger sizes have been built and are to be launched in September of 2008.