Important Note: Make sure to use Neogeo zipped rom sets from a recent MAME set like 0.144 and higher. Do not use sets from Neorage or FBA since they are not 100% compatible. Also do not unzip or rename any game files.
Initial Setup:

• Create a game directory on your device (named Neogeo for example), using a file manager app or your PC
  
• Obtain neogeo.zip from a recent version of MAME and place it in the directory. If you're having trouble finding the right one, search Google for 'MAME Bios'
• Obtain at least one game zip and place it in the directory, making sure it's on the compatibility list below. For example, if you want 'Metal Slug', you'll need the file mslug.zip
• Launch NEO.emu and select 'Load Game', then navigate to the directory you previously made and select the game zip you want to run
  
• Once you've navigated to the game directory, you may also select 'Load Game From List' to show the full titles for easier game selection
  

Neogeo-specific Options:

• Emulate Timer: Enable the per-scanline timer used in some games for raster effects. 'Auto' enables it using a built-in list of games that require it (mostly soccer ones). Turn it off if you experience flickering graphics.
• Make/Use Cache Files: Create and use .gno cache files when loading a game. These files speed up loading and reduce memory usage of games but may not work with all games yet. Loading a game the first time without a .gno file present will take 2x-3x longer, but once created the game will load around 10x faster.

FAQ:

Q: I'm stuck with 4 credits, how do I insert more?

A: When in console (AES) mode, you can't insert more credits just like the real Neogeo system. If you push start+select to access the Universe BIOS menu, most games have infinite life/credit cheats listed. Alternatively, to switch into arcade (MVS) mode: open the app menu, change the setting under Unibios Switches, and reset the game. Now push the select button to insert as many credits as you like.

Compatibility List (All sets were tested from MAME 0.144, larger ones require devices with at least 512MB of memory):

OK

Runs, but has issues

Doesn't work yet on all ports

Note: No current ports use the C core so all issues with it are now marked 'OK'

Game Title	Filename	Compatibility Note
3 Count Bout	3countb.zip
2020 Super Baseball	2020bb.zip
Alpha Mission II	alpham2.zip
Andro Dunos	androdun.zip
Aggressors of Dark Kombat	aodk.zip
Art of Fighting	aof.zip
Art of Fighting 2	aof2.zip
Art of Fighting 3	aof3.zip
Bakatonosama Mahjong Manyuki	bakatono.zip
Bang Bang Busters	bbbuster.zip
Bang Bead	bangbead.zip
Blue's Journey	bjourney.zip
Blazing Star	blazstar.zip
Breakers	breakers.zip
Breakers Revenge	breakrev.zip
Baseball Stars Professional	bstars.zip
Baseball Stars 2	bstars2.zip
Burning Fight	burningf.zip
Crossed Swords	crsword.zip
Captain Tomaday	ctomaday.zip
Cyber-Lip	cyberlip.zip
Digger Man (prototype)	diggerma.zip
Double Dragon	doubledr.zip
Eight Man	eightman.zip
Fatal Fury Special	fatfursp.zip
Fatal Fury	fatfury1.zip
Fatal Fury 2	fatfury2.zip	Corrupt Graphics
Fatal Fury 3	fatfury3.zip
Football Frenzy	fbfrenzy.zip
Fight Fever	fightfev.zip
Battle Flip Shot	flipshot.zip
Galaxy Fight	galaxyfg.zip
Ganryu	ganryu.zip
Garou - Mark of the Wolves	garou.zip
Ghostlop (prototype)	ghostlop.zip
Goal! Goal! Goal!	goalx3.zip
Voltage Fighter - Gowcaizer	gowcaizr.zip
Ghost Pilots	gpilots.zip
Gururin	gururin.zip
Ironclad / Choutetsu Brikin'ger	ironclad.zip
The Irritating Maze	irrmaze.zip	Lockup
Jyanshin Densetsu - Quest of Jongmaster	janshin.zip
Jockey Grand Prix	jockeygp.zip	Lockup
Puzzled / Joy Joy Kid	joyjoy.zip
Far East of Eden - Kabuki Klash / Tengai Makyou - Shin Den	kabukikl.zip
Karnov's Revenge / Fighter's History Dynamite	karnovr.zip
Kizuna Encounter - Super Tag Battle	kizuna.zip
KOF 94	kof94.zip
KOF 95	kof95.zip
KOF 96	kof96.zip
KOF 97	kof97.zip
KOF 98	kof98.zip
KOF 99	kof99.zip
KOF 2000	kof2000.zip	Sound Issues
KOF 2001	kof2001.zip	Missing Graphics
KOF 2002	kof2002.zip	Sound Issues
KOF 2003	kof2003.zip	Lockup
King of the Monsters	kotm.zip
King of the Monsters 2	kotm2.zip
Last Blade / Bakumatsu Roman - Gekka no Kenshi	lastblad.zip
Last Blade 2 / Bakumatsu Roman - Dai Ni Maku Gekka no Kenshi	lastbld2.zip
League Bowling	lbowling.zip
Legend of Success Joe	legendos.zip
Last Resort	lresort.zip
Magical Drop 2	magdrop2.zip
Magical Drop 3	magdrop3.zip
Magician Lord	maglord.zip
Mahjong Kyoretsuden	mahretsu.zip
Chibi Marukochan Deluxe Quiz	marukodq.zip
Matrimelee / Shin Gouketsuji Ichizoku Toukon	matrim.zip
Money Puzzle Exchanger / Money Idol Exchanger	miexchng.zip
Minnasan no Okagesamadesu	minasan.zip
Syougi no Tatsujin - Master of Syougi	mosyougi.zip
Metal Slug	mslug.zip
Metal Slug 2	mslug2.zip
Metal Slug X	mslugx.zip
Metal Slug 3	mslug3.zip	ARM Core is OK, Possible Lockups on C core
Metal Slug 4	mslug4.zip	ARM Core is OK, Possible Lockups on C core
Metal Slug 5	mslug5.zip	Lockup
Mutation Nation	mutnat.zip
NAM-1975	nam1975.zip
Ninja Combat	ncombat.zip
Ninja Commando	ncommand.zip	ARM Core is OK, Random Lockups on C Core
Neo Bomberman	neobombe.zip
Neo-Geo Cup '98 - The Road to the Victory	neocup98.zip
Neo Drift Out - New Technology	neodrift.zip
Neo Mr. Do!	neomrdo.zip
Nightmare in the Dark	nitd.zip
Ninja Master's	ninjamas.zip
Over Top	overtop.zip
Panic Bomber	panicbom.zip
Puzzle Bobble 2 / Bust-A-Move Again	pbobbl2n.zip
Puzzle Bobble / Bust-A-Move	pbobblen.zip
Pleasure Goal / Futsal - 5 on 5 Mini Soccer	pgoal.zip
Pochi and Nyaa	pnyaa.zip	No Sound
Pop 'n Bounce / Gapporin	popbounc.zip
Prehistoric Isle 2	preisle2.zip	Missing Graphics
Power Spikes II	pspikes2.zip
Pulstar	pulstar.zip
Puzzle De Pon!	puzzledp.zip
Puzzle De Pon! R!	puzzldpr.zip
Quiz Daisousa Sen - The Last Count Down	quizdais.zip
Quiz Meitantei Neo & Geo - Quiz Daisousa Sen part 2	quizdai2.zip
Quiz King of Fighters	quizkof.zip
Ragnagard / Shin-Oh-Ken	ragnagrd.zip
Real Bout Fatal Fury	rbff1.zip
Real Bout Fatal Fury Special	rbffspec.zip
Real Bout Fatal Fury 2	rbff2.zip
Riding Hero	ridhero.zip	Missing Graphics
Robo Army	roboarmy.zip
Rage of the Dragons	rotd.zip	Missing Graphics
Strikers 1945 Plus	s1945p.zip	Missing Graphics
Samurai Showdown	samsho.zip
Samurai Showdown 2	samsho2.zip
Samurai Showdown 3	samsho3.zip
Samurai Showdown 4	samsho4.zip
Samurai Showdown 5	samsho5.zip	Lockup
Samurai Showdown 5 Special	samsh5sp.zip	Lockup
Savage Reign	savagere.zip
Super Dodge Ball	sdodgeb.zip
Sengoku 2	sengoku2.zip
Sengoku 3	sengoku3.zip	Missing Graphics
Shock Troopers	shocktro.zip
Shock Troopers 2	shocktr2.zip
Soccer Brawl	socbrawl.zip
Sonic Wings 2	sonicwi2.zip
Sonic Wings 3	sonicwi3.zip
Spin Master / Miracle Adventure	spinmast.zip
Super Sidekicks	ssideki.zip
Super Sidekicks 2	ssideki2.zip
Super Sidekicks 3	ssideki3.zip
Ultimate 11 - The SNK Football Championship	ssideki4.zip
Stakes Winner	stakwin.zip
Stakes Winner 2	stakwin2.zip
Street Hoop / Street Slam / Dunk Dream	strhoop.zip
The Super Spy	superspy.zip
SNK vs. CAPCOM SVC CHAOS	svc.zip	Lockup
Top Hunter - Roddy & Cathy	tophuntr.zip	ARM Core is OK, In-game Issues on C Core
Top Player's Golf	tpgolf.zip
Thrash Rally	trally.zip
Treasure of the Caribbean	totcarib.zip
Neo Turf Masters	turfmast.zip
Twinkle Star Sprites	twinspri.zip
Tecmo World Soccer '96	tws96.zip	ARM Core is OK, CPU Crash on C Core
Viewpoint	viewpoin.zip	ARM Core is OK, CPU Crash on C Core
V-Liner	vliner.zip	CPU Reboots
Waku Waku 7	wakuwak7.zip
World Heroes	wh1.zip
World Heroes 2	wh2.zip
World Heroes 2 Jet	wh2j.zip
World Heroes Perfect	whp.zip
Windjammers / Flying Power Disc	wjammers.zip
Zed Blade / Operation Ragnarok	zedblade.zip
Zupapa!	zupapa.zip	Missing Graphics

Needed BIOS Files (number in parentheses is CRC-32): If you wish to remove unused files in your neogeo.zip, these are the exact files currently needed by NEO.emu

• 000-lo.lo (0x5a86cff2)
  
• sfix.sfix (0xc2ea0cfd)
  
• For Universe BIOS mode: uni-bios_2_3.rom (0x27664eb5)
  
• For MVS Japan mode : vs-bios.rom (0xf0e8f27d)
  
• For MVS USA mode : usa_2slt.bin (0xe72943de)
• For MVS Asia mode :asia-s3.rom (0x91b64be3)
• For MVS Europe mode : sp-s2.sp1 (0x9036d879)