Setting up on Android is the ultimate way to carry an entire arcade in your pocket, but the real challenge is finding a clean, organized "pack" of games that actually works without the clutter. Where to Find the Best ROM Packs
Once you have your ROM pack, you need to tell RetroArch where to find it. RETROARCH - Android - Beginners Guide pack roms para retroarch android link
If you are using RetroArch on a device with limited storage (or an SD card), this is the most famous curated pack. PlayStation 1, Arcade, and various handhelds. Setting up on Android is the ultimate way