Aquí tienes un post claro y compartible en español sobre cómo empaquetar ROMs para usar en RetroArch para Android (optimizado para publicaciones en foros o redes):
Use clean folder structures: Create a master "RetroArch" folder on your phone, with subfolders labeled by system (e.g., RetroArch/ROMS/SNES). pack roms para retroarch android better
I found a useful "pack" online, but not a 10,000-ROM dump. Instead, I found a "Best of SNES" pack (about 120MB, 50 games) and a "Top 50 GBA" pack. Small. Clean. No-intro verified. Aquí tienes un post claro y compartible en
Internal Storage/RetroArch/system/scph5501.bin), Sega CD, and Neo Geo BIOS files are placed here. Without them, the ROM packs for these systems will result in a black screen., this collection provides zip files for various systems ranging from Arcade (MAME 2003 Plus) to PlayStation 1 and PSP. Essential BIOS Packs , this collection provides zip files for various
Why it’s better: It cuts out the "filler" (clones, sports titles from 1992, non-English versions) to save massive amounts of SD card space.