Game Boy is a line of portable video game systems developed by Nintendo. However, the term "Game Boy" usually refers to the original Nintendo Game Boy.
History
The original Game Boy made its debut in 1989, and was about 4″ x 7″ in size. In 1997 the Game Boy Pocket was released, measuring at a reduced 3″ x 5″. In 1998, the Game Boy Color was released, succeeding the monochrome original. In 2001 a complete update was made to the line with the Game Boy Advance. The Advance included a new shape, improved sound, and more complex graphics (from 8 bit to 32 bit). Due to complaints over the Advance's lack of a back light, the upgraded Game Boy Advance SP was released in 2003; the SP had a folding case, an LCD screen with back light, and a rechargeable lithium battery. Currently, Nintendo's stake in the portable gaming market is based on the Nintendo DS (2005).