FacelessTech built this Game Boy cartridge that shows the game title on a small OLED screen.
The original Nintendo Game Boy is now more than 30 years old, but it still has an active community of enthusiasts who make new hardware or modify existing hardware. That includes people who make new game cartridges. To make those, they use “repro” (short for “reproduction”) PCBs that contain re-flashable chips and Game Boy-compatible edge connectors. FacelessTech noticed that those PCBs are quite compact and built a shortened Ghost Cart that is about half the height of a standard cartridge. For his newest project, he used that extra space to add an OLED screen to a Game Boy cartridge.