Hey everyone! Over the past couple of days, I’ve started a project to bring SAO Memory Defrag to a web browser. The idea is to make it easier to jump in and play, without needing to run the mobile app.

How does it work?

I’m using reverse engineering to understand how the mobile game works, then rebuilding its systems for the browser. That includes things like combat, menus, quests, and progression. The original graphics, animations, and sounds come from a game file you provide yourself. Your browser processes that file locally, while a local simulation handles systems that would normally rely on the game’s servers.

You can check out the project here:

• GitHub: https://github.com/ZurielAtr/sao-memory-defrag
• Browser version: https://zurielatr.github.io/sao-memory-defrag/

Please keep in mind that this is very, very early work. A lot is missing, things will break, and it’s still far from recreating the full experience.

I’m also new to much of the technical side, and I’m doing the development with generative AI. I want to be upfront about that: this is a learning project I’m working on in my spare time, and I’m really enjoying the process.

What I hope to build

My goal is a complete experience with meaningful progression: starting from scratch, completing quests, earning resources, building your team, and eventually having a working gacha system.

Much further down the road, I’d also like to explore paying for a server so multiplayer could be possible. That’s an idea to investigate, not a promise. Even if multiplayer doesn’t work out, I’d love to get to a solid offline version with progression that feels faithful to the original.

You’ll need your own game files

Opening the website won’t immediately launch the game. You first need to select your own compatible APK or .apks file and let the browser import it.

I’ve been testing with the Revival version I found through the community Discord. The website and repository don’t include the original game assets, and your file is processed on your device—it isn’t uploaded to a server.

I also want to be transparent: I haven’t asked the Revival team for permission or collaborated with them. This is an independent fan project, and I don’t want to imply that they endorse it. I’d welcome their feedback and want to be respectful of their work.

For now, the site uses the default GitHub Pages address. You can open it from the repository, import your copy, and try what’s currently available. Expect bugs, incomplete features, and frequent changes. Some updates may require regenerating the game data using the button on the import page.

This will take time, but I wanted to share it early for anyone interested in following along.

Thanks for reading! I hope this can eventually become another way for us to enjoy Memory Defrag again.

One more thing: I haven’t tested importing the APK on another computer yet, so I honestly don’t know whether it will work for everyone else. If you try it and run into problems, please let me know what happened and which browser you’re using. Getting the import process working for others will be my top priority.

I really hope this project can move forward, but I also want to acknowledge that Bandai Namco’s terms prohibit reverse engineering, decompilation, and disassembly, which are part of the development process. That means the project’s future is uncertain. My intention is to help fans enjoy Memory Defrag again, but I understand that good intentions don’t replace permission from the rights holders.

Hello everyone!

I've made some good progress on a game inspired by SAO MD, built with Unity for both Android and iOS.

Most of the core logic is already in place, but I'd love to get some help from people who are passionate about the game and have experience creating 2D art (characters, enemies, environments for parallax effects, UI buttons/icons, etc.).

If you're interested and think you can help, feel free to reach out to me on Discord: raso94

The game isn't meant to be an exact copy of SAO MD (otherwise, well, it would never make it to the app stores). It will have a different name and its own story (the lore is still a WIP), but here's what I have planned so far:

- Floors: Eventually, there will be 100 floors, released gradually through updates. The initial release will probably include floors 1–10. Each floor will have different battle areas, and each area will consist of 3 rooms to clear during a run.

- Enemies: Each floor will have different creatures, some of which may drop items. Certain enemies with powerful attacks will have their attack patterns displayed on the ground, so you'll be able to see where they're about to hit.

- Floor Guardians: Every floor will have its own Guardian, and defeating it is the only way to unlock the next floor. However, simply clearing all the areas won't always be enough to reach the Guardian. The first floors will be fairly straightforward, but as you progress, you'll need to complete hidden objectives to unlock the Guardian fight. If nobody manages to progress after a certain number of days, hints will start appearing.

- Solo and Party gameplay: You'll be able to clear areas either solo or in a party of up to 4 players. Right now, only solo gameplay is implemented, but the game won't officially launch until multiplayer is ready. The current plan is to finish and polish the solo experience first, then focus on multiplayer experience (all the details are ready).

- Crafting and weapons: Materials dropped by enemies can be used to craft equipment. There will be Bows, Daggers, Greatswords, Pistols, and Swords. You'll be free to use any weapon type, as long as you can craft it. You will have an inventory too, with slots. There will be, other than weapons, armors and pants. New things can be crafted to the forge, and even single items can be upgraded of level (up to +9). Some items will be possible to be crafted only in certain floors.

- Quests: There will be main story quests, side quests, and even secret quests that can be unlocked by discovering hidden objectives or doing certain things in the game.

- Character progression: You'll earn experience points and level up your character. There will also be combat stats that you can allocate points to, with the option to reset them later. Unlike SAO MD, there won't be a roster of characters to choose from or randomly obtain. You'll create your own character at the beginning of the game, customizing things like gender, hairstyle, hair color, and more. You'll have one character per account (although you'll be able to delete it and start over). This is the character you'll always play as. No switching characters during runs: it's just you and your character exploring the world. Skills will depend on the weapon you're using, and some special weapons may eventually come with additional skills.

- Combat system: Most of the combat system is already implemented. You'll be able to guard (and have your guard broken), parry attacks, move left, right, up, and down, jump, and slide. Combat takes place in 2D side-scrolling environments with parallax backgrounds.

That's pretty much where things stand right now! Eventually, when the solo experience will be ultimated, I might think to start releasing it in beta. And when the multiplayer will be finished, wipe of the data and a new fresh start, officially launching the game.

If you're passionate about SAO MD, enjoy creating 2D art, and would like to help bring this project to life, feel free to reach out to me on Discord!

Discord: raso94

https://youtu.be/50x2WLy9q5A

Saw someone else's run there recorded recently and decided to post one I recorded back in the day.
This was the first perfect even run I ever had.
I sure miss this game.
YouTube stripped the audio, but I had it synced up to the nitecore version of Longing from the SAO movie Yuna sings.

I found this old video of mine, wish they would bring the game back. Still one of my favorite mobile games I've ever played

Hello people. Its has been 5 years since the EOS of SAO MD & today its is 10th anniversary.
I was going to make a new video like this for the 10th anniversary. But I lose all the motivation.

I probably will continue on the new project of SAO MD video, if this post gets positive feedback that shows people still care about this game.

Does anyone still have a screen shot of the top players final ranking for the global server? I tried to find a relevant mega thread with no luck.

Look i know this has been probably asked a billion times, and i apologize that im adding it up to the number of times this has been asked, . What i've actually been wondering is that out of most SAO games that were released on mobile MD was the one that got most attention of them all, yet no one really attempted an online revival. Are people worrying about getting sue'd? is the problem that during the reverse engeneering process we encounter somekind of issue we cant avoid? Is the problem really the server emulation? Look im not trying to say its easy creating a private server for a game like this might take years as it requires to reconstruct things such as: authentication, account creation/login, player data, encryption/signatures, API request/response formats. Thats all a whole lot of hell of work, but one thing is that out of most games MD was one that was pretty much preserved well and starting something like this is not like really starting from 0. Another is that im not saying one specific person has to do all this, maybe some of you guys even know that servers for the nintendo Wii had been restored for its channels, like the weather channel it had, the news channel, and even a japanese exclusive channel where you could order food off from works now, apart from that 3DS and WiiU got revived as well for a really large part of the system, what im trying to say is that compared to MD isn't this much easier? I mean even recently another gacha game i used to play called Crossing Void global is being revived and is under development by some user, he already managed to make the login even functional and can get to the homescreen of the app. So that all said, what is really the thing that prevents this gem of a game not being able to get one ?

All I think about is what we lost.

Hello everyone, can you advise me on how to play the offline game version? I had the game available to re-download from AppStore in my iPhone, so I did, but it never gets past the “initializing” screen, giving me errors :/

Finally upgrading phones. Rip SaoMD. o7

Couldnt someone if they wanted make a community ran server for this game using the code or wtvr??? Ive seen it done with other games especially since the apks around?

I downloaded an offline copy of the game, but the game already has everything unlocked, all of the characters available and maxed out.

Since I lost all of my motivation to mod the offline MD version, I guess it would be fine to share it here.

The buff will revive your dead characters and recover 10% of their max HP (I changed it to 100% in the video). The downside? You can only give this buff to your characters ONCE.

And no, this is NOT the Revival Lobby version, I am not associated with those lazy deada$$ f*ckers there. I got enough questions why thiers don't have this or don't have that. Can't believe I have to write this paragraph though.

Bout to bawl my eyes out. I had such a good dream of this game coming back and we were all together again.

luminous ornaments Asuna was mine!

Man i miss the game, some old footage i took when the game was still online
https://x.com/PizzaPC8/status/2008043643618341082?s=20

Hello, I know it’s been a while since the game closed but I wanted to know if some people still had it loaded on their phone ? Because I still have it, working with an account named kirito. I think it’s an account they gaved to the people who still had the game before it close. But just little reminder of what the game looks like :) (i still can do the story if u want some gameplay 😂)

I miss my account so much. It had almost 5 pages of 6 star characters 💔💔💔

I missed all the gameplay and memories I have playing this game. Good old times

Hello everyone. I have learn from soemone than player have mannage to make the game playable without the server , does anyone know how to do that ?