Hyperboy

The Hyper Boy is a very rare unique accessory that Konami released in Japan only for the original Game Boy in 1991 . The idea is that the Game Boy would slip inside of the Hyper Boy and be turned into a tiny arcade machine The added speaker works quite well. It actually adds a nice bit of clarity and strength to the output In addition of an arcade stick rather than D-pad, the Hyper Boy also incorporates a magnifying screen and front-light as well as an amplified speaker. Interestingly the arcade stick even has separate settings for four or eight directional controls. The unit itself runs on two D batteries which are included