BlockBoy
Working LEGO Game Boy
In development
The Story Behind BlockBoy
In 1989, the original Game Boy was released, an iconic handheld console that revolutionized gaming. When LEGO unveiled their Game Boy set (#72046) in July 2025, I was immediately sold.
But there was one fundamental problem: it was just a display model.
For me, that was the ultimate challenge to make it work. From a previous project, I already had experience with Retro-Go software on an ESP32 microcontroller. With that knowledge, I started designing the BlockBoy: a fully functional LEGO Game Boy, complete with custom PCB, display, and all necessary components.
Specifications
Microcontroller
ESP32-S3
→ More info
Display
2.8" TFT
Software
Retro-Go
→ GitHub
Connection
USB-C
Battery
300mAh
Enclosure
LEGO Set #72046
→ View on LEGO.com
Videos
Building the LEGO Game Boy to play Zelda!
I Make My LEGO Game Boy Work with My New Prototype PCB
Inside My Working LEGO Game Boy + New PCB Sneak Peek
Here We Go! LEGO Game Boy Plays Mario!
Playing Pokemon on a LEGO Game Boy
I Built a Working LEGO Game Boy Prototype
Photos
A behind-the-scenes look at the build process.
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Progress
Completed
Added volume/brightness buttons
Physical controls for volume and screen brightness
Now
Waiting for final PCB
Testing, testing, testing
Firmware
BlockBoy runs on Retro-Go (GPL-2.0).
Questions?
Check out the frequently asked questions for more information about the kit, installation, and ordering.
View FAQ →