In 1989, Nintendo (which had seen a large amount of success from the Game & Watch) released the Game Boy (both created by Gunpei Yokoi), along with the accompanying game "Tetris". Due to the price, the game and its durability (unlike the prior Microvision from Milton Bradley Company, which was prone to static and screen rot), the Game Boy line sold extremely well, eventually amassing sales of 118 million units. "Super Mario Land" was also released with the system, which sold 14 million copies worldwide. 1989 was also the year that Nintendo announced a sequel to the Famicom, to be called the Super Famicom.