Here is a list of all the retro pi lengthened folder names and the corresponding folders.

- amstradcpc = Amstrad PC
- arcade = This folder is for arcade games and so is the FBA folder
- atari800 = Atari 800
- atari2600 = Atari 2600
- atari5200 = Atari 5200
- atari7800 = Atari 7800
- atarilynx = Atari Lynx
- channelf = Fairchild Channel F
- coleco = Coleco Vision
- fds = Famicom Disk System
- gamegear = Gamegear
- gb = Game boy
- gba = Gameboy advanced
- gbc = Gameboy Color
- mame-libretro
- mastersystem = Sega Master System
- megadrive = Sega mega Drive/Genesis
- msx = MSX ( 8-bit Personal computer 1983)
- n64 = Nintendo 64
- neogeo = NeoGeo
- nes = Nintendo Entertainment system
- ngp = NeoGeo Pocket
- ngpc = NeoGeo Pocket Color
- pcengine = PC Engine/Turbo Grafx
- psx = PlayStation 1
- sega32x = Sega 32x
- segacd = Sega CD
- sg-1000 = Sega SG-1000
- snes = Super Nintendo
- vectrex = Vectrex
- zxspectrum = Sinclair ZX Spectrum
That’s all of the folders for raspberry pi 4/400. I really hope that this helps you out. When I got started this was one of the hardest things to work with. if you are looking for a spot to download ROMs, I would suggest romsgames.net. there is also vimm.net and hundreds of other sites. Just make sure that it is legal before you go through downloading.
That’s all on Retro pi lengthened folder names. I hope that this helps you out on your retro adventure! If you have any questions just email pihacks@icloud.com or use the contact us page. Good luck 🙂