A creative modder has transformed an officially licensed LEGO replica of the original Game Boy into a fully functional system. It can now play real Game Boy cartridges, not just serve as a decorative prop.

The project was completed by the modder known as Natalie the Nerd, an experienced Game Boy modder and parts shop operator. She began work even before the LEGO set was released, estimating dimensions and planning how to fit real hardware inside the brick shell.

From the outside, the device still looks almost identical to the LEGO model. The build preserves the brick style buttons and casing, with only slight adjustments to the screen area and cartridge slot. On the inside, though, it is a technical feat. The mod includes USB C power hidden inside a 3D printed LEGO brick and a backlit LCD screen.

Most importantly, the system runs genuine Game Boy cartridges. It is not emulation but actual hardware installed inside LEGO parts. The creator also used 3D printed components to support button mechanics and the internal layout.

The current prototype shows working gameplay but does not yet have a built in battery pack. Natalie plans to publish her mod plans once she finalizes that step so others can replicate the design.