A Reddit user named Jibril-sama has created a Steam Game Cartridge system that uses old SATA SSDs as game cartridges, allowing users to access their Steam library in a nostalgic format. The system includes a disk mount detection and execution script for easy game launching, alleviating storage issues for gamers. It operates on Linux, utilizing Valve’s Steam URL Protocol for navigation. The setup requires a systemd template and a udev rule to function properly. There are concerns about the compatibility of Steam game libraries when transferred across different PCs, and there is potential for Jibril-sama to share guides and resources for others to replicate the project.