Once you have found and downloaded your preferred pack (usually in .zip or .7z format), follow these steps: 1. Extract the Files
While RetroArch has on-screen overlays, playing a ROM pack of fast-paced games like Mega Man or Street Fighter is much better with a Bluetooth controller (like an Xbox or PlayStation controller) or a telescopic grip like the Razer Kishi. Cloud Syncing
If you play on both your phone and a PC, you can use apps like to sync your "Saves" and "States" folders. This allows you to start a game on your commute and finish it on your desktop at home. Shaders and Overlays
RetroArch isn't a single emulator; it is a "frontend" for emulators, game engines, and media players. It uses "Cores" to run games from various consoles. This makes it incredibly powerful but also slightly more complex to set up than standalone emulators. Why Download a ROM Pack Instead of Individual Files?
Everything You Need to Know About Using a Pack of ROMs for RetroArch on Android