A Maker from Denmark decided to build a mini Gameboy. The instructions and CAD models for 3D printing is open source for anyone to rebuild it.
The Danish 3D printing prodigy Rasmus Hauschild has a mini Gameboy made with a 3D printer. In the self-built Gameboy a Rasperry Pi Zero is used. The operating system runs Emulation Station which the mini Gameboy can play all sorts of Gameboy classic games, such as Super Mario Kart or Tetris.