Rubik's Cube is a 3-D mechanical puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the "Magic Cube", the puzzle was licensed by Rubik to be sold by Ideal Toy Corp. in 1980 and won the German Game of the Year special award for Best Puzzle that year. As of January 2009, 350 million cubes had been sold worldwide making it the world's top-selling puzzle game. It is widely considered to be the world's best-selling toy.
In a classic Rubik's Cube, each of the six faces is covered by nine stickers, each of one of six solid colours, (traditionally white, red, blue, orange, green, and yellow). A pivot mechanism enables each face to turn independently, thus mixing up the colours. For the puzzle to be solved, each face must be returned to consisting of one colour. Similar puzzles have now been produced with various numbers of stickers, not all of them by Rubik.
The Rubik's Cube, a mid-1970s invention of Ernő Rubik of Hungary, fascinated people around the globe and became one of the most popular games in America at the time. In just seven years worldwide sales surpassed thirty million units with a senior buyer at the New York FAO Schwarz toy emporium noting it had become "the world's most asked-for plaything". Some even argued it could lead to obsessive behavior. Pirated editions turned up in Taiwan, Hong Kong and some American cities. The cube spawned an array of sequels, spinoffs, a television show and literary works. As of January 2009 350 million cubes have sold worldwide making it the world's top-selling puzzle game. It earned a place as a permanent exhibit in New York’s Museum of Modern Art and entered the Oxford English Dictionary after just two years. The Cube retains a dedicated following, with almost 40,000 entries on YouTube featuring tutorials and video clips of quick solutions.