Sword Art Online: Memory Defrag is an action RPG styled after the classic arcade beat-em ups with simple intuitive one touch controls!

Guide Kirito and the Assault Team as they fight to clear 100 floors of Aincrad and free themselves from the death game! //Gain new allies in Alfheim Online and battle to ascend the World Tree. Travel to the barren world of Gun Gale Online to stop the killer “Death Gun” before he strikes again!

What are you waiting for? LINK START!!!

Experience every aspect of SAO as characters from the anime, manga, games, and side stories collide!

- Tap to attack and unleash blistering combos!
- Swipe to dodge devastating attacks from terrifying floor bosses!
- Block & parry, then SWITCH! to finish your foes.

- Collect beloved characters such as Kirito, Sinon, Yuna, and LLenn!
- Upgrade each character with unique weapons and equipment, such as Elucidator.
- All new versions of beloved characters available only here!

- Relive the classic arcs of the anime
- Experience adventures from outside of the anime such as Ordinal Scale and SAO Alternative: GGO!
- Explore new stories unique to SAO: Memory Defrag!

- Party up with other players in LIVE co-op missions!
- Become a Healer, Attacker, or other roles and unleash devastating combo moves with your allies
- OR go lone wolf and play in Solo mode
- Join a guild and work together to complete special quests for exciting rewards!

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This game contains some items available for in-app purchase that can enhance gameplay and speed up your progress. In-app purchases can be disabled in your device settings, see for more details.

This application is distributed under the official rights from the license holder.

What's New

Version 1.25.2

A few bugs fixed.

Ratings and Reviews

4.7 out of 5

6.7K Ratings

6.7K Ratings



I’m absolutely in love with this game! It takes up a good portion of my time, making sure I’m leveling up and getting better with each character I use! However, I have a few complaints I’d definitely like to address that bug me. For one, I don’t plan on putting money into the game, despite the fact I want this game to be more successful, so it makes it very very difficult to unlock new characters when the cost to unlock the x10 packs be 125 or 250 of income to unlock. Once you’re far into the game, you get stuck at a certain point where everything becomes challenging and you can’t even proceed. I also dislike how the level cap is 80, requiring you to get a special upgrading material to increase your leveling limits. The process is too abnormally long in my opinion and it frustrates me that I can’t even proceed in the game with my 2 level 80 characters. I’m forced to use my other characters and level them up, which still buys my time and I still enjoy to do, but I’d like to actually have a completely maxed out character instead of having to leave things off right before it’s finished. Aside from all this, I’m really enjoying the fact that you guys are going out of your way to add in new events so often! The constant work is very pleasing and I definitely encourage you to keep going! I hope that I won’t come to the point where I find the game boring because of the aforementioned complaints, but I’ll continue to enjoy this amazing game!

It’s biggest strength is also its biggest weakness


What separates SAO from other gatcha based mobile games is its unique combat system. Every hero has a weapon type and an element (or is non elemental). There are tons of versions of every hero, so you can play as your favorite character and try multiple roles. For example I have a 5 star Asuna who uses a rapier and has dark element attacks and I have a 4 star Asuna who uses a rod (is a caster) and has fire element attacks. Every weapon type has strengths and weaknesses and a slightly different play style.

The main issue I have with this game is that the entire combat system is “clunky”. Having no joystick to move your hero makes it hard to aim attacks and avoid attacks. Sometimes when you want to jump backwards to avoid an attack the double swipe doesn’t register and you walk backwards and get hit. Once you have played for a while you will start to see a ton of little quirks in the combat system.

There are days when I would give this game 5 stars. There are days when the combat system is so frustrating that I would give it 2 or 3. I feel like there is more good than bad, so a 4 star rating is fair.

Love it!!


I absolutely love this game and it keeps me entertained for hours. One suggestion: I have a lot of upgrade crystals that are limited to certain characters that I am not able to use because I’ve already upgraded them to 5 star characters (so like with the recent Yuna that you could get through the event— I have 20 upgrade crystals for her but I can’t use them since I already made her a 5 star). Is there anyway to make it so that these upgrade crystals can be converted into other upgrade crystals (so either normal or maybe for current character events happening/ones that have just happened but already finished)? That would be great because I also have upgrade crystals for characters that I don’t have. Same idea with medal scouts— I have a ton of medals from scouts that I couldn’t use because I didn’t have enough to use them... anyway to convert those into something else? Again, I absolutely love this game and hope that you take these suggestions into consideration, thanks!!


BANDAI NAMCO Entertainment Inc.
56.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 12+ for the following:
Infrequent/Mild Cartoon or Fantasy Violence
Infrequent/Mild Realistic Violence
In-App Purchases
  1. Memory Diamond One-Time Offer A $0.99
  2. Memory Diamond G $79.99
  3. Memory Diamond D $17.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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