MAME roms
MAME full set // all games supported by MAME
MAME unique // all unique games supported by MAME (no clones)
MAME working // all working games (unique games and playable (even if a clone does work))
MAME perfect // Working Unique Games with Sounds, good colors and cocktail Mode supported
MAME bios // the BIOS used by MAME

MAME games specifics
Games with samples // samples are needed to get sound in the game
Games with NO sound // what to say more ?
Cocktail Mode supported // You can flip screen if fou play in cocktail mode (head to head)

DAT FILES
hiscore.dat supported : You can store your top-scores for those games (using the dat)...
hiscore.dat NOT supported : You can't store your top-scores
cheat.dat supported : You can cheat the roms to get infinite lives and more (using the dat)...
cheat.dat NOT supported : you can't use cheat with those games
command.dat : display command controls for the games (MAMEplus // MAME32fx)

note: history.dat and mameinfo.dat were removed cause most games are supported by now...

ART-FILES
flyers // the games that have a flyer picture
cabinets // the games that have cabinet picture
marquees // the games that have marquee picture
panels // the games that have control panel picture
snaps // the games that have an ingame snapshot
titles // the games that have a title snapshot

datObase SPECIALS
midi files // the games that have some midi music file to listen to
gif files // the games that have some gif image or animations to display
arcadehits // roms avalaible at arcadeHITS.net (soon, some are for the arcadeHITS version2)

info : lists are displayed in alphabetical order using anchors.
more : you can go to the "find" page to get the advanced search