Ruffle is an open-source Flash Player emulator that allows users to run Flash content in modern web browsers without needing the original Adobe Flash Player, which was discontinued in 2020. It is designed to support a wide range of Flash applications and games, making it easier for developers and users to access and enjoy legacy content. The project is built using Rust, a programming language known for its performance and safety. Ruffle can be used as a standalone application or integrated into websites, providing a seamless experience for those looking to relive classic Flash animations and games.