Citra is a popular open-source software tool used for emulating the Nintendo 3DS gaming console on various platforms, including Windows, macOS, and Linux. It allows users to play 3DS games on their computers with enhanced graphics and performance compared to the original hardware. Citra supports a wide range of games and offers features like save states, customizable controls, and the ability to use mods. The development of Citra began in 2014, and it has since gained a strong community of contributors and users. Regular updates improve compatibility and add new features, making it a reliable choice for gamers looking to experience their favorite 3DS titles on a different platform.