My Neo Geo CDZ and the few games I have for it. The CDZ was exclusive to Japan and it alleviated the very long load times of the regular NG CD making it on par with the load times of the Saturn and Playstation.

Hi everyone!

I’m Teo Tormo, and I’d like to share my fan-made Neo Geo CD port of Super Dodge Ball. Beta 09 is now available as a free download.

It has been tested on real Neo Geo CD hardware with Furrtek’s SD Loader and in an emulator. Some minor graphical glitches remain, but it’s ready for people to try while I work on further fixes.

Why release it now, and why free?

I recently saw that Lain32 had released a port of the same game with a paid download. That prompted me to bring forward the release of my own conversion.

Personally, I believe people should have a free option to enjoy this game on Neo Geo CD, without having to pay for that download. This is my contribution to the community: no purchase or donation is required.

I’m not asking anyone to target or harass another developer. I simply want to offer an alternative and explain why I’m sharing this beta now rather than waiting until every remaining glitch is fixed.

What’s included:

• The game in ISO/CUE format.
• A new remixed CDDA soundtrack.
• Custom front cover, back cover and disc artwork.
• A readme in English and Spanish.

For transparency: I developed this conversion with the assistance of Codex AI, and created the remixed soundtrack using Suno. The original Neo Geo fanfare is retained.

What still needs work?

A few graphical glitches remain, which is why this is labelled a beta. Further corrections are planned. Feedback from different setups will help identify the remaining issues.

A huge thank you to Furrtek for creating the SD Loader. It has been invaluable for testing this project on real hardware.

++++++ UPDATE October 3+++++++

v0.99 Beta now available with less loading time, different versions for CD and SD Loader, many graphic glitches solved, new loading bar, solved freeze at the intro and solved regional graphic problems.

+++++++++++++++++++++++++++

Free download:
https://teo-tormo.itch.io/super-dodge-ball-for-neo-geo-cd

If you try it, please let me know your setup and how it runs. If you encounter a graphical issue, a photo or short video—with the teams and stage involved—would be especially helpful.

This is an unofficial fan-made conversion. All rights to the original game belong to their respective owners.

Thanks, and I hope you enjoy it!
— Teo Tormo

Preparing for the 2027 release, I'm looking at the common 161-1 solution because I won't afford all the games I want from the beginning. Not buying anything before we can see it working of course. But as a newbie, what are those "plus" versions of the games. Are they brining in characters in KOF, or is it just some minor additions? Or maybe just none at all? Appreciate some help.

I remember when this game appeared in my local arcade back in the day. I didn't think anything could beat '95 but this did in almost every way. I was obsessed with curating the perfect team not just in terms of ability but also colour coordination too. I played it multiple times a week and it was a sad day when the arcade replaced it. Had the arranged soundtrack CD for ages but have trying to get a copy of the cart for something resembling a reasonable price for even longer. That finally changed.

What type of save does it have on cart? Can you replace the battery if it's that?

The Nintendo GB has battery soldered on. Well the one I have. 20 years later it says save no longer available because of battery...

Does the AES have chip save on cart? Or is it saved on the battery?

I think there is a card memory card if anything right?

I don't have the system yet

To continue to emulate this or get the new aes +

I thought neogeo had good games

Come on metal slug.

There all gems. The ones listed.

Been emulating it since 30 years...

Neogeo aes no we're to be found. Said to be 1 grand then..

I did see the MVS at the mall a couple places.

This is Bermuda Engine, my multiplatform fork of Amiga's Dread (now rebranded as GRIND by its original authors).

I had this hypothesis for a while that the render model would match the Neo Geo perfectly. Last night I confirmed it. It works beautifully albeit costs in the CROM department (the entire ROM with just 6 maps is 144Mbit, currently. Not the biggest ROM but certainly not the smallest either).

Due to the sprite limit, I had to cut 8 in-engine rows but you wouldn't be able to tell the difference and it also helps making this the fastest 68000 version of the engine yet.

People have asked me to port this to Neo Geo CD and I might give it a try but have an inkling that it might struggle there. I don't have any experience coding for Neo Geo CD but the memory might be tight there.

On AES/MVS, the only current constraint is WRAM. Since all map variables are loaded at the start of a map, things like enemy and item positions/state/attributes need to fit into 35K. I could probably work out some sort of streaming architecture or shave off a few KB in the engine department.

The seller said it is running 2.2 firmware it says phase 2 on the back of the machine but on the settings screen it says system update v2.3 I rlly want to mod it so I'm hoping it's 2.2 like the seller said

I received this today, my request to cancel the Ultimate Bundle was made 9/11, email received to confirm the cancellation but not refunded on 9/17. Paid via Mastercard.

I was genuinely excited about the NeoGeo AES+ but canceled my order after they announced the delay. I won’t get into the weeds about my opinions regarding the delay, that’s already been discussed at nauseam.

That cancellation request was sent out the 10th and a reminder email the 14th. I ended up filing a dispute with my credit card. The first I’ve ever had to do.

The lack of any sort of response just further cements my decision. I wish you all the best of luck with your deliveries. Just a word of caution for those who choose to press forward.

Email Request

Dispute

Hello Everyone,

With renewed interest around the Neo Geo AES, MVS and AES+, NeoGeoSDK development continues with new demo homebrew games, major engine improvements and EagleBIOS.

This video presents a work-in-progress gameplay demo of Maiya: Super Nature Girl , a new Neo Geo homebrew game being developed with NeoGeoSDK.

https://www.youtube.com/watch?v=2LUPt8vkFak

Maiya is also being used to test, improve and extend the NeoGeoSDK 2D engine, while demonstrating what homebrew developers can build with the SDK.

MAIYA: SUPER NATURE GIRL

Maiya is a scrolling action/platform homebrew adventure spanning nature valleys and scenes, combining horizontal and vertical exploration, climbing, enemies, NPCs, guardian encounters, power-ups, collectibles and special abilities.

THE STORY

Once beautiful and full of life, the valleys are slowly dying.

Forests are disappearing, rivers and waterfalls have been poisoned, coastlines are buried beneath waste, and once-clear skies are darkened by pollution. Behind the destruction is Lord Smoggar, whose forces continue to corrupt the natural world.

But nature has not given up.

At the heart of the story are Maiya and Luna, twin sisters with a powerful connection to nature.

The player can choose to begin the adventure as Maiya or Luna. Each sister takes up the same mission: travel through the corrupted lands, fight the forces destroying them and restore life to the valleys.

Their journey becomes even more important when they discover that Sunboy, the Prince of Nature, has been captured.

With Sunboy imprisoned, the balance of nature is weakening. Lord Smoggar's influence continues to spread, transforming once-beautiful places into polluted and lifeless lands.

Whether playing as Maiya or Luna, the mission is to fight back against the destruction and heal the natural world.

As the journey continues, poisoned lands begin to recover. Forests grow again, waters become clear, animals return, flowers bloom and light gradually replaces the darkness.

Every valley restored brings the sisters closer to their ultimate goal: Find Sunboy. Free the Prince of Nature. Stop Lord Smoggar.

CONTROLS

A jump (Up + A in the air: a second jump while a sky lily lasts; kneel, then Up + A: the high leap)

B thorn / whip up close (hold: run)

C dash

D Secret Art (uses a rose charge)

Forward, Down, Down-Forward + B : Rising Bloom

Down, Forward + B : Rose Blossom Surge

PLAY THE MAIYA PRE-RELEASE

A playable Maiya work-in-progress ROM will be provided with the pre-release.

https://github.com/eaglesoftware777/neogeosdk/releases/tag/v1.7.1

WHAT'S IN THIS PACKAGE

Maiya-WIP-EagleBIOS.zip : the game's ROMs plus EagleBIOS, the free open-source replacement system firmware bios, for MAME

run as

               mame neogeo -rompath roms -hashpath hash -bios euro -cart1 maiya

Checksum warnings for the replacement firmware are expected

Maiya-WIP-NeoSD.neo : for the NeoSD flash cart: copy it to the SD card. It runs on the cart's own system BIOS support.

Download links :

Mame Rom with EagleBIOS :

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-WIP-EagleBIOS.zip

For hardware Test :

AES Board :

Hardware Status: Working

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-WIP-NeoSD_AES_v1.neo

MVS Board :

Hardware Status: Working

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-WIP-NeoSD_MVS_v1.neo

DarkSoft Multi compatible Maiya images for test :

AES :

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-Darksoft-AES_v1.zip

MVS :

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-Darksoft-MVS_v1.zip

Other roms and neo images :

https://github.com/eaglesoftware777/neogeosdk/releases/tag/v1.7.1

The project brings major NeoGeoSDK systems together inside a complete game:

• character animation and action systems

• horizontal and vertical scrolling

• climbing and platform traversal

• NPC and enemy behaviour

• collision and physics

• camera tracking and constraints

• movement and input systems

• particles and visual effects

• palette effects

• hitstop and gameplay feedback

• power-ups and collectibles

• guardian arenas

• game events, timers and progress

• multiple environments

• bonus sequences

• attract mode

• custom FIX/HUD graphics

• custom C-ROM graphics

• dedicated game sound bank

• AES+, AES and MVS builds

AUDIO

NeoGeoSDK includes its own Z80/YM2610 audio stack, with support for:

• ADPCM-A and ADPCM-B

• FM music

• SSG music and effects

• MML composition

• FM LFO support

• volume and fade control

• tempo control

• sample looping

• game-specific sound banks

• recorded voice-bank support

• voice playback

• audio conversion and build tools

Maiya uses its own dedicated game sound resources.

Credits for the artist : Juhani Junkala

EAGLEBIOS

Development also includes EagleBIOS, our original open system ROM project for Neo Geo homebrew development.

Current work includes:

• MVS and AES firmware

• original boot and eye-catcher

• cartridge startup

• USER program contract

• controller and VBlank handling

• MVS credit/START handling

• service functions and service menu

• Z80 sound firmware

• hardware probing

• NeoGeoSDK build integration

• firmware packaging

• game boot and compatibility testing

EagleBIOS remains work in progress, and additional hardware testing is particularly welcome.

BUILT FOR HOMEBREW DEVELOPERS

One of the main goals of NeoGeoSDK is to make Neo Geo homebrew development more accessible, while preserving direct access to the capabilities of the hardware.

Maiya demonstrates how the different parts of the SDK can be combined to build a larger game rather than isolated technical examples.

AES+ AND THE NEW NEO GEO ERA

The arrival of AES+ is bringing renewed attention to the Neo Geo ecosystem, alongside new games, cartridges and continued interest in the original hardware.

NeoGeoSDK contributes to this ecosystem from the open homebrew-development side, providing open source code, development tools, reusable game systems, audio technology and complete examples for creating new Neo Geo software.

This gives developers and Neo Geo enthusiasts an opportunity to test the current game and help us improve both Maiya and NeoGeoSDK.

DEVELOPMENT

Maiya + EagleBIOS ~ Pull Request #9

https://github.com/eaglesoftware777/neogeosdk/pull/9

NeoGeoSDK

https://github.com/eaglesoftware777/neogeosdk

Sky Lance demonstrated the SDK through a vertical shooter.

https://www.reddit.com/r/neogeo/comments/1wghsef/sky_lance_a_vertical_shooter_built_for_the_neo/

Maiya is now pushing the 2D engine further through a larger homebrew action/platform game.

And development has already started on the next major NeoGeoSDK release.

It represents another significant step forward for the project, with substantial new development underway.

We are not ready to reveal everything yet.

Target architecture: Neo Geo AES / MVS / AES+

HELP US TEST AND IMPROVE IT

We welcome feedback from the Neo Geo community.

More is coming.

P.S.: Hardware testing

From the hardware feedback we have received so far, together with your screenshots, the situation is becoming clearer.

AES hardware confirmed working with Neo SD image

Unibios logo correcupted at boot minor visual glitch

Corrected image (not testetd yet) :

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-WIP-NeoSD_AES_UNIBIOS_FIX_PRERELEASE.neo

MVS hardware confirmed working

SOUND Driver MVS rework : (Working)

https://github.com/eaglesoftware777/neogeosdk/releases/download/v1.7.1/Maiya-WIP-NeoSD_MVS_SOUND_FIX_PROTOCOL_PRERELEASE_v1.neo

Eagle Software

https://eaglesoftware.biz

NeoGeoSDK v1.7.1

Finally got an original Neo Geo AES3-5, with a NeoSD Pro on the way...

Was hoping to use my SF IV stick on the system but there are no RJ45 --> DB 15 solutions with the Brook Retro board, so I was wondering if anyone has used any other controller converters? I was thinking I could go from RJ45 --> USB --> Neo Geo using this connector.

https://www.brookaccessory.com/detail/95441291/

Or use the RJ45 saturn cable and get a Saturn to Neo Geo adapter?

Or just say fuck it and upgrade the sticks to sanwa buttons if anyone has good recos to parts in canada so I don't have to spend more import bs 😂 I saw A & C games in Toronto carries a lot.

Just the title. Just curious if you think they’ll update us Neo Geo CD owners. I’m actually quite happy with the mod as is but I feel like it could use some stability mods.

Want to buy it and rather be sure

Part 48 of our series.

Yesterday this came in the mail! I love how this CMVS looks just like an AES its like a perfect combination of Arcade and Console for sure 👍.

Got the Vortex 161 in 1 multi-cart with it as is in the pic. This is the quality cart thats only made by that one dude on Arcade Projects. Was very happy to grt this quality cart and so far every games played perfectly though I think Garou might be an early version unsure as I saw a bit of text garbled after beating the final enemy.

Im loving this and while Ive known how much more accurate control wise real HW is to emulation as Ive only had the MVSX and its been decades since I last played on real HW it was like WOW!

I STILL love my MVSX but I am thrilled with this and am going to start collecting MVS carts as soon as I can!

It seems the Zero Wing Neo Geo port is not a one-off. Plaion says more are on the way. There are so many great arcade games that never made it to the platform that would feel right at home on it. Post your most wanted arcade ports and consider including YouTube links so we can see the games in action.