UncleStem built a physical handheld for PICO-8, the fantasy console that normally runs as a virtual machine on any modern OS. The core is a Raspberry Pi Zero 2W, deliberate overkill, paired with a 720x720 pixel IPS display chosen specifically because its square aspect ratio matches PICO-8's native resolution exactly.
The display handles HDMI input and audio natively, which stripped the hardware problem down to buttons, battery, and enclosure. UncleStem designed a 3D-printed case, attempted an aluminum-milled version himself, abandoned it, and commissioned a professional to finish it. The whole build rides on a custom PCB with full-color silkscreen, which provides mechanical stability and, frankly, looks good. All PCB files and build assets are on a public Google Drive.
One catch: PICO-8 itself is not open source and must be purchased separately to run any of this. The build video covers the full design and dev process, and that process, including the failed aluminum attempt and the PCB decisions, is where the real value is. This is not the first PICO-8 handheld on record, but it is the first that supports the complete game library without control compromises.
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