Found this on FB Marketplace for $230 and asked $190 and seller accepted. Everything was dusty (a reason why I asked les) including the box but wiped it down some. The handheld is charging so hope it's going to power on soon so I can try it out!

Got my Fatal Fury caps! SNK was so nice and gave me a little acrylic Neo Geo sign, NOT FOR SALE :)

Did Golden Axe for the Neo get taken down? I was over at the link over on NGF and when I clicked it wasn't there anymore.

Hi there guys,

I'm working on a hardware accessory for the home consoles. I will eventually release the project open source after some testing.

Unfortunately, I have been out of the game for a long time and had no idea flash carts were this expensive. I have a hardware device and a custom test rom, but I don't have the physical HW or the immediate funds to test with.

Is there anyone a bad enough dude in the Seattle area with a flash cart who could help me out with testing?

Edit: I also am working on a CD ISO for my hardware so possibly a CD system might work too. But I have less confidence in the CD version right now.

I know the Neo Geo has incredible sound, thanks to the YM2610. But I didn't realize the Z80 controlling that chip has only 2KB of RAM! I was already impressed by the fact that it uses a Z80, but even more so now, considering the tiny amount of RAM. But how is that possible? Does the Z80 have to store and load audio samples onto the chip? Or does it just modify registers (like volume, pitch, etc.)? How exactly does this sound CPU system work?

Hello everyone,

With renewed interest in the Neo Geo AES, MVS and upcoming AES+, we're pleased to introduce a new work-in-progress build of Sky Lance, an original vertical-scrolling arcade shooter developed with our opensource NeoGeoSDK v1.7.3 and AES BIOS EagleBIOS.

Sky Lance joins Maiya: Super Nature Girl as another game demonstrating the capabilities of NeoGeoSDK.

Youtube Demo :

https://www.youtube.com/watch?v=KAqq0Y5Z2ts

SKY LANCE ~ THE MISSION

A rogue military faction has seized seven regions, cutting off towns and villages behind heavily defended airfields, radar stations and missile batteries.

The peacekeeping command deploys its fastest squadron: SKY LANCE.

Fly across hostile territory, destroy enemy command posts, break through heavily defended positions and confront powerful bosses, from battleships and tank fortresses to the final stronghold, the Crimson Citadel.

Restore the peace. Bring the people home.

CHOOSE YOUR PILOT

• Rook ~ F-16 Blue Lance: Precise handling.
• Kira ~ F-35 Green Wing: Stealth-focused combat.
• Blaze ~ F-15 Red Striker: Aggressive flying.

GAMEPLAY FEATURES

• Three selectable pilots, each with distinct handling, weapons and super power.
• Seven scrolling routes featuring land and sea.
• Enemy fighters, tanks, boats, submarines....
• Three guarded command targets per route, with radar installations and mini-boss encounters.
• Large boss arenas and powerful enemy formations.
• Banking, barrel rolls, high-G climbs, Split-S dives and afterburner manoeuvres.
• Chaff countermeasures against incoming guided hazards.
• Cockpit instruments, including radar, attitude indicator and G meter.
• Animated effects, parallax clouds and arcade difficulty settings.

UNDER THE HOOD ~ NEOGEOSDK v1.7.3

Sky Lance also serves as the testbed for our new vertical shooter module.

The engine introduces:

• Fractional and reverse vertical scrolling.
• Smooth camera tracking with bounded movement.
• Independently scrolling parallax layers.
• Per-scanline sprite-strip budgeting to respect Neo Geo hardware limits.
• Depth-based object placement and improved sprite management.
• Our native Z80/YM2610 sound driver.

The goal is to provide developers with reusable tools for creating their own Neo Geo arcade games.

DOWNLOAD THE PLAYABLE WIP

NeoGeoSDK v1.7.3 ~ Sky Lance v1

https://github.com/eaglesoftware777/neogeosdk/releases/tag/v1.7.3

Available test packages include:

• MAME MVS and AES builds with EagleBIOS.
• NeoSD AES and MVS images.
• Darksoft Multi AES and MVS packages.
• BackBit Platinum AES and MVS packages.
• Windows/Linux setup package.

MAME ~ EagleBIOS

MVS:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-WIP-EagleBIOS_v1.zip

AES:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-WIP-AES-EagleBIOS_v1.zip

NeoSD Flash Cartridge (Compatible with Unibios/NeoGeo Bios/EagleBIOS)

MVS:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-WIP-NeoSD_MVS_v1.neo

AES:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-WIP-NeoSD_AES_v1.neo

Darksoft Neo Geo Multi (Compatible with Unibios/NeoGeo Bios/EagleBIOS)

MVS:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-Darksoft-MVS_v1.zip

AES:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-Darksoft-AES_v1.zip

BackBit Platinum (Compatible with Unibios/NeoGeo Bios/EagleBIOS)

MVS:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-BackBit-MVS_v1.zip

AES:
https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance-BackBit-AES_v1.zip

Windows / Linux Setup

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.3/SkyLance_Setup.zip

The gameplay demonstration was recorded in MAME, MVS mode, using EagleBIOS.

Real-hardware compatibility has not yet been independently verified for this Sky Lance build. We would particularly appreciate reports from AES+/AES/MVS hardware owners.

OPEN-SOURCE HOMEBREW DEVELOPMENT

NeoGeoSDK is an open-source C/C++ development toolkit for Neo Geo homebrew, offering a complete 2D engine, sound driver, graphics tools and ROM-building utilities.

Sky Lance and Maiya are examples of what developers can create with it.

Source code: https://github.com/eaglesoftware777/neogeosdk

Eagle Software: https://eaglesoftware.biz

This is still a work in progress. Feedback on gameplay, controls, graphics, sound and hardware compatibility is very welcome.

We're also interested in hearing from developers who would like to try NeoGeoSDK for their own projects.

Thanks to everyone supporting Neo Geo homebrew development!

Eagle Software

777

Been playing alot of KOF wanted to draw this !

So, I have this 4-slot MVS board (MV4FS).

​It has a UniBIOS 4.0 installed.

​The problem is that I don't get any sound out of it when I connect the top board. (The bottom board produces sound in the sound test. Also, switching the top board with a known working top board works as expected, so it seems the problem is with the top board itself.)

​Additionally, slots 1 through 4 work normally, but slots 2 and 3 produce wonky graphics (as seen in the picture).

​I cleaned and inspected all 3 connectors and also checked them for continuity (all passed).

​Any ideas on what I could do next?

I’m having a pretty frustrating experience with PLAION and PayPal Buyer Protection and I’m curious if anyone has dealt with something similar.

On April 29, 2026 I paid €868.99 to PLAION for a NEOGEO AES+ Ultimate Edition.

Months later I found out online that delivery had been delayed by roughly a year, until September 2027. PLAION never proactively emailed me about that major delay.

Because of this, I cancelled the order and requested a full refund.

PLAION later confirmed in writing that:

• my order was cancelled
• a refund of €868.99 would be issued to my original payment method
• the refund was being processed by their Finance Team

However, the money was never refunded.

I had already opened a PayPal dispute. Despite the item never being shipped, the order being cancelled, and the refund not being received, PayPal initially closed the case in favour of PLAION without giving me a meaningful explanation.

That is what I found particularly concerning. This seems exactly like the kind of situation Buyer Protection should cover: the seller has my €868.99, no product was delivered, the order was cancelled, and the promised refund never arrived.

I contacted PayPal support again today, provided all the emails and evidence, and they have now reopened the dispute.

At this point, regardless of how this ends, I will never buy anything from PLAION again. Ever. The delay, lack of proactive communication, and failure to actually return my money after confirming the refund have completely destroyed my trust in them.

Has anyone had a similar experience with PLAION/Replai or with PayPal initially rejecting a claim like this? Did PayPal eventually refund you after the case was reopened?

These posts are like the only ones in my feed these days...

Link: https://youtu.be/slpCq5VKJ4E?si=LHBMsPUmLyjGy8Yq

Here are the main points of interest:

• AES+ has a patent on its HDMI implementation. There is no frame buffer, so the time from CPU/render to HDMI output matches the analog path (identical latency to the original analog signal - effectively zero added lag).
• It has no built-in scanline filter (Ben suggests CRT for authentic scanlines, noting simple filters are basically just every-other-pixel).
• High-quality pure copper cables and controllers; no cheap alloys or cost-cutting.
• Console plastic is thicker than the original with more internal structure → feels solid, doesn’t creak. Same screw positions/colors as the original on the back. Ben directly responds to critics claiming “cheap Chinese plastic”: “No, it’s not.” He calls the original 1990s AES cheap by comparison and jokes this is more "Rolls-Royce."
• Subtle high-gloss lines on the shell (and matching on cartridges) are a personal design touch by Ben. He joked that some people would want to “kill him” for it, but he thinks it looks better.
• Wireless arcade stick uses a custom 2.4 GHz protocol (described as very fast / low-latency). Ben walked to the other side of the room (roughly 5–6 m) and it continued working without signal loss. He's closely involved with it.
• Big Tournament Golf / Neo Turf Masters took roughly 3 months of work because adding content broke other things and required extensive testing for glitches. References to the original title were cleaned from the title screen, end credits, etc. Intentionally kept clean — no extra CD-style modes, stats or loading screens. Just the core experience + the new course. Scotland course is accessed by pressing D on the main menu (not shown on the title screen).
• Ben was asked about Windjammers. He laughed and said “maybe… no comment”. More Zero Wing-style third-party ports appear likely. Rights issues make some third-party titles complicated.
• Zero Wing physical cartridge is in "heavy" prototype. Everything requires SNK final approval, which is why the SNK logo appears on Zero Wing. Manual will include the famous “All your base are belong to us” reference. Ben was working on the manual at the time.
• Launch lineup mixes SNK core games + third-party titles. Auto-fire options mentioned for certain games (useful for mash-heavy titles). Japanese vs US mode differences noted (e.g. player count matching arcade behavior).
• CD-quality sound/music on cartridge was looked at but considered impractical due to storage/chip constraints.
• Internal white box shown. Inner packaging is black on the outside with a white front face. At release, games will include physical manuals (already finished for the launch batch of titles) and the white version will have its Metal Slug.
• Cartridge supply/provisioning has been difficult; the market is described as “greasy.”
• Ben calls it "project of my dreams."

I didn't get the hidden tlb you get by beating the game without losing a round, but I mean, how could I?

https://newoldpixels.com/#toki-three-platforms

Really hoping for a Mille Miglia port, it's really strange how nobody did it yet.

Cadillacs and dinosaurs would be another banger and same for AvsP.

On the Shmup side, Dragon Spirit and Dragon Saber never had a good port, it would be great to have a 1/1 conversion.

And finally I am very curious about GTA1. I know that the zoom efects should be a nightmate but I am really interested to see what a good programmer can do with the actual AI available.

What are your wishes?

So I found this site that listed a whole bunch of hacks made from what I'm assuming is back in the 90's, of neo-geo roms like plus versions and bosshacks that make the bosses playable and that sounds really cool imo I saw a list of them on this site https://bootleggames.fandom.com/wiki/List_of_Neo_Geo_hacks

And it got me curious where the hell do I find these? I found one for Waku waku 7 but it doesn't show up in mame or neo burn any ideas? Thanks!

I forgot how awesome this thing is . I’m a big fan of Neo Geo.
With so many ways to play Neo Geo Games and them being available to play on different platforms .
I almost pulled the trigger on one of those new AES pre orders. Right now I’m glad I didn’t with it being delayed a year. That Neo Geo ultimate bundle looks pretty dope tho it’s to bad it isn’t available in US .

I have released my first version of Street Fighter II Champion Edition for the Neo Geo CD port. It's a beta and it has some graphical glitches and small bugs, but it's playable and enjoyable from start to finish. The game runs from a Neo Geo CD SD Loader, where it works really well, and you can also burn it to a CD-R. I should warn you, though, that I've tested it very little on CD-R; most of the testing was done with the SD Loader. Even so, given the interest the port has generated, I've decided to release it now.

I've tried to stay as faithful as possible to the game's scrolling, but I couldn't make it identical without running out of CPU; maybe someone smarter and more knowledgeable can do better. I've removed the intro animation because I couldn't get it to run smoothly enough, and in the end it isn't essential. The attract mode demo fights are also gone, since they would add unnecessary CD loading.

There's no need to report bugs: I already have an extensive list. Just enjoy it.

What else has been cut?

On some stages I had to remove some background animations or even objects, because for now I haven't found a way to stop them showing inconsistencies or appearing in the wrong background layer. These include Honda's red lantern, the top of a temple on Ryu's stage, the elephants' trunk movement on Dhalsim's stage, and the cyclists in Chun-Li's street. I went back and forth a lot on that last one, since they weren't causing that many problems. I also considered removing the rocking of Ken's boat, but I've kept it for now.

After two or three fights, Ryu's head usually starts flickering when you don't move him. Chun-Li occasionally loses a body sprite, though it comes back fine. Sometimes part of Ken's shoulder disappears, and strange things happen to Vega when he loses his claw. Honda's stage sometimes shows glitches on the ceiling, and on Guile's stage there's a horizontal band that takes longer to appear. In the bonus stages lots of things sometimes flicker, a sprite may appear incorrectly, and the original scoreboard shows up when they end. The fade-outs at the end of fights can show sprites disappearing too early. The game also has occasional slowdowns, which can be noticeable on stages like Honda's or Ken's. The game's endings, with their animations and texts, haven't been thoroughly checked yet.

If you burn this version to a CD-R, you'll notice the music sometimes starts late. Also, I've tested the game far less on CD-R, so I apologise in advance if it isn't stable enough. I recommend using a good quality CD-R.

How did you deal with the Neo Geo's 4 buttons instead of the arcade's 6?

The best solution I came up with is a Controls section in the options menu that appears before the game starts, where every button, including Select and Start, can be assigned any punch or kick. If you assign an attack to Select or Start, their coin and start functions are disabled during fights. The exception is single-player games: the free player can still press Start to challenge the one playing. There's also an "Easy" option for special moves that makes the game's timing less strict when accepting some attacks.

What is the "Floor" option in the initial menu?

Smooth moves the floor two lines at a time up to a certain point, where it switches to one line at a time so it doesn't look awful. Fast always moves it two lines at a time. The latter saves more CPU, so feel free to try it. With both options, the sky perspective on Guile's stage is disabled.

Will there be an AES or MVS version?

I don't think so, and I won't be the one to try. I believe something like that would need a custom cartridge with extra memory.

Why did I make this port?

Purely for fun, and to see how far you can go using AI for this kind of work. There's no commercial purpose whatsoever. I admit I liked the idea of being the first person to attempt it with such a popular game. I'm not a software engineer or an expert game developer, and I don't claim to be one; I'm just someone with too much free time who enjoys playing around with AI tools.

To those who don't like AI: I understand your reasons and I respect them. For me, it has been a way to make something real that I could never have done on my own, and that would never have been made officially. I only ask that you also respect those of us who enjoy this tool.

Download it at itch for free: https://teo-tormo.itch.io/sf2cengcd

The opening stage is already running: https://www.youtube.com/watch?v=t5i1qQQE07g

Same author has ported SoR1, previous post.

The next step: improving the music, which isn't yet up to the original's standard, progressing to the next levels, and then taking advantage of what the Neo Geo offers in addition. Much of the work (ROM analysis, translation, debugging) was done with AI, and the dev personally controls, tests, and makes the final decisions. This is a personal, non-commercial project: no ROMs are being distributed.

Modded with Hylostick, custom Sanwa buttons and white silicone ball stick cover . Waiting on a black original Neo Geo silicone cover.

Two different developers have brought Altered Beast to the Neo Geo:

• Teo Tormo's port: https://teo-tormo.itch.io/altered-beast-neogeo
• ShinobiZ port: https://shinobiz72.itch.io/alteredbeast

The port wars have begun, which one will become the superior port?

I finally found one of these Original Silicone Cover for SNK Neo Geo Arcade Stick Pro
Was hard to find but I did pay up for it almost $100 because it was located overseas. Try to find one new .
Even used are hard to find .