Overview
- The conversion accepts and boots real Game Boy cartridges, with a demo showing the system starting Tetris.
- A custom PCB built around an MGB (Game Boy Pocket) CPU with internal VRAM makes the board smaller than a standard cartridge to fit the Lego shell.
- Controls are wired and functional, but final mounting awaits bespoke 3D‑printed Lego‑compatible parts.
- A small backlit display and USB‑C power were integrated, which required removing a few bricks to accommodate the screen kit.
- The modder plans to release the design or a kit once finished, offering a path to play on a set Lego and Nintendo intended as a display model.