What emulators are shipped with Batocera Linux? Here is a spreadsheet that sums it up on the main website.

With Batocera 29+, you can use the pad2key feature: it enables you to map your pad to keyboard keys, in order to play games on old computers, or DOS or Windows games that have sparse joypad support.

All ports are collected in this page: Ports

• 3DO Interactive Multiplayer (manufactured by Panasonic, Goldstar, Sanyo)

• Amiga 500
• Amiga 500+
• Amiga 600
• Amiga 1000
• Amiga 1200
• Amiga 3000
• Amiga 4000
• Amiga CD32
• Amiga CDTV

• Amstrad CPC464
• Amstrad CPC664
• Amstrad CPC6128
• Amstrad GX4000

• Apple II

• Atari 2600
• Atari 5200
• Atari 7800
• Atari ST
• Atari Jaguar
• Atari Lynx

• Easy & Advanced Arcade
• MAME
• Final Burn Alpha
• Atomiswave
• Naomi
• Lightgun games
• Daphne
• Cannonball (enhanced OutRun)

• WonderSwan
• WonderSwan Color

• Commodore 64
• Commodore 128
• VIC 20

• ColecoVision

• DOS

• Channel F (also known as Luxor Video Entertainment System, Adman Grandstand Video Entertainment Computer, SABA Videoplay, ITT Telematch Processor, Nordmende Color TelePlay, Dumont Videoplay or Barco Challenger in various countries)

• Pico-8
• TIC-80
• PyGame

• Odyssey 2 (also known as Philips Odyssey 2 or Videopac G7000 in some countries)

• MSX
• MSX 2
• MSX 2+
• MSX Turbo-R

• Moonlight

• Neo Geo MVS
• Neo Geo AES
• Neo Geo CD
• Neo Geo Pocket
• Neo Geo Pocket Color

• Nintendo Entertainment System
• Family Disk System
• Virtual Boy
• Super Nintendo
• GameBoy
• GameBoy Color
• GameBoy Advance
• Nintendo 64
• GameCube
• Wii
• WiiU
• Nintendo DS
• Nintendo 3DS
• Game & Watch

• PC Engine
• PC Engine CD
• PC-FX
• PC-8800
• PC-98

• Playstation Portable
• Playstation 1 (PSX)
• Playstation 2
• Playstation 3

• ScummVM

• Sega SG 1000
• Master System
• Genesis/MegaDrive
• Game Gear
• Sega CD
• Sega 32x
• Sega Saturn
• Dreamcast

• X68000
• X1

• ZX81
• ZX Spectrum

• MO5 / MO6 / TO7 / TO7-70 / TO8

• Windows32 / Windows64

Below you can find the structure of the emulators directories that sit in /userdata/roms/. In case you lose it, or in case there is a change/update when you upgrade your Batocera distribution, the current empty directory structure can always be found in /usr/share/batocera/datainit/roms/. Some emulators might not be available on your architecture (for instance, PS2/PS3 are only on Batocera PC, not on Raspberry Pis…)

Here is the list for Batocera 30:

3do
amiga1200
amiga500
amigacd32
amigacdtv
amstradcpc
apple2
atari2600
atari5200
atari7800
atari800
atarist
atomiswave
c128
c20
c64
cannonball
cavestory
channelf
colecovision
daphne
devilutionx
dos
dreamcast
easyrpg
fbneo
fds
gameandwatch
gamecube
gamegear
gb
gb2players
gba
gbc
gbc2players
gx4000
intellivision
lightgun 
lutro
lynx
mame
mastersystem
megadrive
moonlight
mrboom
msx1
msx2
msx2+
n64
naomi
nds
neogeo
neogeocd
nes
ngp
ngpc
o2em
openbor
pc88
pc98
pcengine
pcenginecd
pcfx
pet
pico8
pokemini
ports
prboom
psp
psx
ps2
ps3
pygame
satellaview
saturn
scummvm
sdlpop
sega32x
segacd
sg1000
snes
solarus
sufami
supergrafx
thomson
tic80
tyrquake
vectrex
virtualboy
wii
wiiu
windows
windows_installers
wswan
wswanc
x1
x68000
xash3d_fwgs
zx81
zxspectrum