Nintendo releases its second handheld gaming device in Japan. On a screen displaying four shades of gray, gamers play titles like Tetris, a puzzle game that tests speed and ability to align rapidly falling rectangles into their correct spaces.
Game Boy is the most successful video game system ever released. Since its introduction in 1989, Game Boy has sold well over 150 million systems worldwide. Originally bundled with the game, Tetris, this little handheld became an instant phenomenon.