Modder Turns 1:1 Scale Lego Game Boy into a Playable Device

Key Takeaways

1. Natalie the Nerd has designed the first transparent Game Boy motherboard that fits into existing shells.
2. She created a Lego version of the Game Boy that plays original cartridges by swapping out the silicon.
3. The Lego Game Boy features clickable buttons connected through a 3D printed Lego brick.
4. The power circuit for the Lego Game Boy comes from her previous “Safer Charging” board, which is compact.
5. While the project is not easily replicable yet, Natalie plans to improve the board and share complete instructions in the future.

Natalie the Nerd is well-known for her work in modding Game Boys. As a PCB designer, she has innovated the first transparent Game Boy motherboard, which can be fitted into an existing shell.

A Remarkable Achievement

Not stopping at this groundbreaking achievement, she has also managed to swap the silicon from a real Game Boy into a Lego version, allowing it to play original Game Boy cartridges. This is even more impressive since the product just became widely available for purchase on October 1, 2025. Natalie used press images to figure out the sizes for the screen inserts, where most components are placed. She then created a custom PCB to hold the CPU from a Game Boy Pocket (MGB), rather than the classic DMG, mainly because of the internal VRAM and the need to save space.

Custom Features

The Lego Game Boy includes clickable buttons, which Natalie connected using a specially designed 3D printed Lego brick. The power circuit is derived from one of her previous products, a “Safer Charging” board, which she markets through her shop and is already quite compact.

The big question many people have is if they can replicate this themselves. Right now, the answer is likely no, unless you possess a unique skill set. However, Natalie has promised to improve the board and share the complete project once she is done. You can currently find the Lego Game Boy kit on Amazon if you want to grab one, preparing to try it out once she releases her full instructions.

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