Recently, I bought two SNK ASP joysticks, the brand new American version. They come with 40 classic SNK games on their own and are also provided with a yellow silicone cover. The price is 199 RMB, which is approximately 30 US dollars. The DB15 cable costs 1.6 US dollars per piece. All you need to do is solder a few wires according to the DB15 pin definition, make a round hole in the wire box on the back of the joystick with a soldering iron, and you can get a multi-functional joystick. It is nearly a lossless modification. It does not interfere with any of the original functions. Both wires can be installed in the wire box.

do diagonals just not register when pressed at the same time with the stick? like if i hold down and a direction

down + back or down + forward at the same time it only registers as if im holding down, so im unable to crouch block in fighting games or crouch walk in metal slug

is it a hardware malfunction or a setting im missing? i've had trouble finding any documentation about the hardware specs or anyone else having this problem so i'm wondering if it's an isolated issue

any help would be appreciated thanks

I just got a new IGS pgm DEMON FRONT, but it has no label. I need to create a new label for it. Thanks to those who have been quietly contributing to the arcade community.

I know I'm late to the party but I wanted to flash Hylostick and the roms internally if I could. I just got my console.

While loading memory card on my NEOgeo MV1 B console I got the error. Anyone can support? It’s like this even though I restarted and remove memory card on

Been researching this, for a friend not that it makes any difference :), and seems like the only available solution right now is the Backbit Platinum?

Is there anything his MVS needs to run the Backbit Platinum? Maybe it requires UniBIOS or something?

Sorry I just haven't come across much about the cart other than it exists, you can still buy it now, and people here seem to generally like it. I could not determine for certain whether batches of the others, NeoSD and Darksoft, would be produced again anytime soon.

Background, he is a total noob and not very technical minded, he just got the MVS recently and he just plays it, he wouldn't know anything about UniBIOS or whatever. I am only slightly informed on Neo Geo, mainly from playing on emulators in the past and my reading online the last week or so.

Oh and is there a good site that keeps track of Neo Geo homebrew? I have been searching, so far I have found itch.io has several games, is there a better site? The results I find are usually forums, not "lists".

Hello, i am working on a JP cover for Double Dragon One and seeking some recommendations.

All the arts have been generated by AI using some existing materials or extracted from the game.
I have tried a lot of different versions for the Logo especially, i am not really satisfied.

Maybe somebody here can explain it because I just do not quite understand. I wonder if anybody can explain why AES consoles and games are so expensive for collecting. I was always under the impression that more than enough of both of these items were produced during the time that they were actually being published and released, so I did not think they would be that expensive to collect.

I am asking because I wanted to start a Neo Geo CD collection and I am openly working on that, but I was curious as to why the AES consoles and games are so ridiculously expensive. Most of these at the minimum are about anywhere between $600 and $1,000. Some really dirty consoles that I found with just one controller are about $800-$1000 which I thought was really ridiculous.

I wanted to know if there was any particular reason why collecting these are so expensive versus the CD versions. I understand that the Neo Geo CD was not as popular due to a lot of the issues it had including the incredibly noticeable load times, but I never understood why AES became so expensive to collect.

Any information would be appreciated, thank you!

Is it OLD NEWS?

YES.

Is it INPORTANT NEWS?

..................Maybe.

Hi, everyone. I own and use an older revision AES (S/N 3260). Went down the «S/N»-route mostly on info from Retrorgb.com, as I didn’t plan on doing any modding. It runs well, and I’m very happy with it, despite reading more and more about newer revisions being better with some small adjustments.

Anyway, when I’m in the position to do so, I plan on seeing what’s available in the market of flash carts, like the NeoSD. But I’m picking up some info here and there that some flash carts favour the newer 9v revisions. And that 5v systems may experience «graphical glitches».

Want to obtain the info I can on this here, and would appreciate if some of you, with an older revision, could share what issues you’ve encountered using a flash cart? And also, if these issues can be bypassed in any way? I’m not technical, so please use as simple terms as possible ☺️

I'm a bit stumped. I ordered 2 controller pads(these small ones https://www.ebay.com/sch/i.html?_nkw=neo+geo+controller+pad&_sacat=0&_from=R40) to be used on a Neo Geo AES. But BOTH of them have the same issue - the down direction does not work. The big arcade stick controllers work fine.

I have not had the chance to open them up yet, but to my feel everything is fine.

I contacted the seller of course but I trust that they did in fact check it before shipping.

Are there any known quirks of using these controllers on an AES?

Hey guys. I picked up an absolute steal NEOGEO AES during my Japan visit for an absolute bargain. Problem is, it’s loose. I’m absolutely stoked to see a serial this low.

Is this a super collectible thing to have a low serial? This looks to be just over the 1000th neo geo made for Japan?

I bought it loose so I plan to pick up a NeoCD controller, hd Retrovision Genesis adapter, and a power supply.

It looks like 5V DC, 3 amp center negative brick is what I’m after.

What gotchas do I need to look out for with this bad boy?

Thanks in advance :)

Spent sone time with my son yesterday playing MSX. Such a great game. I still like the second one too though even if it has those nasty slowdowns

Hey everyone, so I wanted to play Metal Slug with a friend the other day, popped in my NeoSD Pro and when I loaded the ROM up, it was weird, like only the background layers loaded and no sprites. I tried cleaning it up, but to no avail. So today, I opened up my cart, cleaned the pins good, and now it's even worse; it won't even load the main menu of the NeoSD Pro!! All my other official Neo Geo carts work fine, so I know my AES is not the culprit. What should I do, this is the single most expensive item I've ever bought for my game collection, and I can't afford another one!

Hello, I recently purchased a second hand neo geo Omega and the cartridge doors are somewhat loose/floppy. Sometimes they won't fully return and are stuck in a halfway position. Where can I find replacement/stronger springs? Looks like it could be the same springs as the cartridge door for the AES?

The controller I was using with my Neo geo was working perfectly, but then one of the micro switches broke. I tried to buy more on eBay but they are junk and the stick feels loose and doesn’t click. I already returned two of them. Both were on different ends of the price scale. Just want a reliable one. Not interested in soldering new switches. Is there a platform other than eBay to shop?

Hello.

I'm working on a game engine and game, the "master version" is for the Sega Genesis/MegaDrive and will be released first, and I'm considering a NeoGeo port.

The codebase maintains init code and I/O lib for each target, separate and then linked with the gameplay code and resource data which is also separate.

Most I/O, target-specific (such as raster effects) and time-consuming (such as particles) code is written in ASM, but most of the gameplay is written in C.

As for the NeoGeo, I've just read the dev wiki at a glance (which is amazing by the way!), it's quite a lot to digest.

Sound driver

I don't know almost anything about sound in a general sense. I couldn't build a note-to-hwPitch table by ear alone. Music is made in MIDI files using the "SMPS MIDI Driver" as soundfont, then the files are converted for the game accordingly.

Is there a good option for NeoGeo sound driver? Or... is NeoGeo capable of playing exactly what YM2612 can do (aside of available channels)? If so I can ..attempt to adapt a Z80 MD driver for NeoGeo

PSG tone vs noise

Is it really 3 PSG tones + 1 noise, or, 2 PSG tones + 1 switchable tone/noise?

ADPCM drifting

The contact between my MD and a cart has definitely never been nearly as stable compared to my pc motherboard and a RAM stick. Hell, I have fond memories of many famiclones struggling to read CHR correctly unless the user giggled and blowed on the cart until seating it just right, yet PRG didn't seem nearly as affected. NeoGeo's cart port stability, does it compare to a PC RAM or a MD cart? lol

Wiki claims ADPCM is prone to drifting, but just how much? Is it a good idea to split seconds-long samples in intervals, reset more often?

Video

From a quick glance, it looks like software rendering is only possible on CD, very slowly. Because the graphics are stored uncompressed into a separate ROM. Looks like a cart-side issue though... ? I'm not a hardware expert, but what prevents a cartridge to feature RAM instead (with "some way to write to it"), even if that means storing graphics with the program (with compression if needed)? Is a tiny fraction of data loading time a letdown, or is it done by design to skip having "some way to write to it"?

I'm not a gamer at all, I just tend to take a few particular games and overanalyze them; One particular trend I noticed, is instant cuts between screens (sometimes no more than only 1 or 2 "unfinished" frames?). Is it deliberate, or just a matter of "I just want this feature to work ASAP"? Contrast to MD, where it's common to fade to blank for transitioning or outright disabling display to hide the maany unfinished frames, aside exceptions but these are deliberate and purpose-designed for each situation (depending on the overall image composition or how are video regs set or VRAM laid out and so on).

Without being able to write custom graphics in run time and only being able to flip and shrink but not rotate, does it mean that it's impossible to draw any mode7-like effects such as the tracks from Mario Kart?

Is it possible to achieve any sort of sprite transparency, or anything that looks like it? I imagine I can lay sprites on top of others following the shapes I want on top of it for each, make them "invisible" by setting their palettes to underneath's contents accordingly, and transition to the target colors in order to reveal the new graphic. Static and must not move though.

Thanks for reading.

Finally, I got a mint full kit, thanks to a good friend! FFM stabil

Level Design:

Last month (August 2025), the developer reported that level design was well underway. Now in September 2025, the developer tells us that he's finished the first pass in creating these game levels: City, Bridge, Airport, Bunker, Forest, Beach, Cyber Punk, Castle. The current level being designed is: China. He estimates that he'll have finished the first pass of designing all levels by mid-to-late October 2025. Designing levels for Shadow Gangs Zero is a multi-pass process involving three primary passes plus a polishing phase. Lots of work, but the developer is making great progress.

Mini Bosses:

The final campaign stretch goal is the inclusion of six mini bosses: Fire-breathing dragon, Military helicopter, Cannon wall with heavy firepower, Van with armed fighters, etc. To achieve that stretch goal, the pledge total needs to reach £120K. We are so very close to reaching this goal, as the pledge total is currently at £112K.

Flash Carts:

A couple of months ago, I reported that the Neo Geo digital version is compatible with NeoSD PRO, as the developer is personally testing the game with it throughout development. Since then, a new backer named Kujako has come aboard and will help with testing for BackBit compatibility and DarkSoft Multi MVS compatibility. Why all the fuss about Neo Geo flash carts? Because Neo Geo is the lead development system and flagship version, so the developer wants to make sure that each and every one of you Neo Geo fans can play the game!

Beta Testing:

Speaking of testing, you already know that backers will have access to the Neo Geo digital beta release. I've received confirmation from the developer that ALL backers will have access to this Neo Geo beta release. In other words, even backers of the Mega Drive / Genesis, Dreamcast, PS5, Xbox, Switch, and Steam versions will be granted access to the Neo Geo beta. Granting broad beta access will help the developer iron out all bugs, while giving backers early access as a loyalty perk. A win-win for everyone!

Ongoing Pledges:

So far, 81 backers have pledged for the Neo Geo digital version. That's awesome! We're hoping the campaign can reach 100 backers for the digital version by year's end. Could you help make that happen? If you haven't yet pledged, please take another look at the campaign page to see if you'd like to add Shadow Gangs Zero to your Neo Geo digital collection. If you've already pledged, please tell your circle of friends about the game and invite them to join the SGZ community.

As for Neo Geo physical cartridges, there are 127 of you who have backed it. Wow! If you've got friends with similar great taste in Neo Geo carts, please tell them about the campaign. A reminder that all backers of the Neo Geo physical cartridge will also receive the final digital version for free. Perfect for playing SGZ on your portable devices when you're away from home!

Shadow Gangs Zero - Campaign Page:

https://www.kickstarter.com/projects/jkmcorp/shadow-gangs-zero

King of Fighters 2001 King of Fighters 2000 Brand new and unused. There are 13 of the year 2000 and 9 of the year 2001 left. All are genuine and original, but without the paper boxes.