RetroArch is a cross-platform emulation host and multi-system game emulator that serves as a frontend for the Libretro API. It coordinates video, audio, and user input to maintain the application state for various emulator cores, allowing it to run a wide variety of vintage gaming hardware and software engines.
The platform distinguishes itself through a low-latency emulation model that uses run-ahead processing to reduce input lag. It also features a real-time state tracking system that enables gameplay rewinding by saving periodic snapshots of the emulator memory state.
The environment includes comprehensive tools for retro game preservation, such as multi-pass visual shaders and the ability to switch screen resolutions to match original hardware timings. Additional capabilities cover gameplay video recording and a command-line interface for application management and automation.
