The elder statesman of portable gaming, this big grey brick with a hacked-up Z80 processor and a blurry green screen effectively reinvented an entire market by making portable gaming something more complex than, say, Game & Watch. It became lighter with the Game Boy Pocket model, brighter with the Japan-only Game Boy Light, and the later Game Boy Color model finally added simple NES-level color support for developers to take full advantage of.
Also known as the Hyundai Mini Comboy in South Korea.