The Game Boy is an 8-bit handheld game console developed and manufactured by Nintendo. The first handheld in the Game Boy family, it was first released in Japan in April 1989, then North America, three months later, and lastly in Europe, more than one year later. It was designed by the same team that developed the Game & Watch series of handheld electronic games and several Nintendo Entertainment System games: Satoru Okada, Gunpei Yokoi, and Nintendo Research & Development
Nintendo’s second handheld game console, the Game Boy, combines features from both the NES home system and Game & Watch hardware. The console features a dull green dot-matrix screen with adjustable contrast dial, five control buttons (a directional pad, two game buttons, and “START” and “SELECT”), a single speaker with adjustable volume dial, and, like its rivals, uses cartridges as physical media for games.