Squareboi is an open hardware cartridge system for the Game Boy Color, made to be as accessible and DIY-friendly as possible. Using a handful of off-the-shelf components, it provides the same functionality as an original cartridge, compatible with the majority of programs. Additionally, an Arduino-based programmer allows for easy transfer of games and save data.
Up to 4MB ROM/32KB RAM storage space
Stores save data without needing a battery
Made of common, off-the-shelf parts
Programmer works as a general purpose cartridge reader
Easy to build: A basic version can be made with entirely through-hole components