Frogger is an arcade game introduced in 1981. It was developed by Konami, and licensed for worldwide distribution by Sega/Gremlin. The object of the game is to direct frogs to their homes one by one. To do this, each frog must avoid cars while crossing a busy road and navigate a river full of hazards. Skillful players may obtain some bonuses along the way. The game is regarded as a classic from the golden age of video arcade games and was noted for its novel gameplay and theme. It was also an early example of a game using more than one CPU, as it used two Z80 processors.[1] Frogger is still popular and clones can be found on many Internet game sites. By 2005, Frogger had sold 20 million copies worldwide, including 5 million in the United States.