Recalbox is an open-source operating system designed for retro gaming enthusiasts. It allows users to turn their computers or single-board computers, like the Raspberry Pi, into a gaming console that can emulate classic video games from various platforms, including NES, SNES, and Sega Genesis. The system is user-friendly, featuring a simple interface that makes it easy to navigate through games and settings. Recalbox supports a wide range of controllers, enabling players to enjoy their favorite titles with familiar controls. It also includes built-in features for saving game progress and customizing settings.