Sword Art Online:Memory Defrag is an action RPG in which you can both re-experience the story of the anime series as well as take part in a whole new original story.

Kirito, Asuna, Leafa, Sinon, and a whole range of characters bursting with personality from the original novels and anime appear in the game. Control them freely with just one finger as you take down a range of powerful enemies and unleash various skills. Defeat enemies and complete each stage to progress through the game!

In addition, you can ally yourself with friends or other users to defeat a number of huge and powerful bosses in multiplayer co-op mode.

Enjoy a fresh and different play style with solo player mode as you assign each player different roles. Become a Healer, Attacker, or other roles. Unleash various combination moves with your allies.

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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 1.22.2

A few bugs fixed.

Customer Reviews

4.7 out of 5

4.5K Ratings

4.5K Ratings

Returning player


I tried this game over half a year ago and decided to try it out again since I saw the anniversary event might yield some free and usable characters and to see how the game has potentially changed for better or worse. I must admit the game got a lot better. The gacha system is more forgiving and considerate of budget players. It’s not as atrocious as before that it expected players to get to five 11 rolls in order to get a guaranteed 4 star. They provide rolls for new/returning players that yields decent characters and the times I rolled I have gotten a 4 star more often compared to before. They also made it so leveling events are constant so new players can grind characters they pulled instead of it coming out in weird intervals. The gameplay itself has not changed much so it’s easy to come back to it and they weren’t like some other gacha games (FEH) where they add so many new elements that returning to the game becomes extremely difficult. I’m glad I gave the game another look.

Lack of balance


This game is great starting out. The story campaign is fairly good at balancing difficulty for the player. However, the extra quests is the true downfall of the game. While I do think the extra quests are a great touch to the game, the balance of difficulty is completely skewed compared to the story campaign. Some extra quests are recommended at level 80 but even meeting those recommendations it’s impossible to actually complete it. In my personal experience, with the new Valentine’s day quest for Memory Diamonds, all of the quest have a recommendation level of 50. I far exceed this recommendation level by 30 for all 3 of my characters. With this, the second to last quest within the series is impossible to complete with the time allotted and the ridiculous amount of knockdowns and paralyzing that occurs. ADDING PARALYSIS TO THIS GAME WAS THE WORST THING THAT COULD OF HAPPENED. I uninstalled the app, only to find out my account is forever gone due to the tedious account recovery process.



I love the game, I play it daily. I’m an aggressive player, I hate having to wait to parry and block. But the bosses are a bit hard. I find myself spending 2 memory diamonds because I’m so close to beating them. Why can’t 3 star characters be evolved? 4 stars are hard enough to get without having to wait for new events to get hacking crystals. Resistance enemies take little to no damage at all. Getting ready to parry takes to long. This game is hard for those aggressive players out there who like to get into the action. You almost have to parry and block if you want to survive the level without spending 2 diamonds to finish it. Why are there no healing items? You could buy them from a merchant, the better the healing item, the more it costs. That’s how most RPG games go. Healing items are essential for new players in the game, possibly experienced players. 3 star characters should be able to get evolved to, doesn’t mean it has to change the characters appearance, just change stats.


BANDAI NAMCO Entertainment Inc.
53.6 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 Sale A $17.99
  3. Memory Diamond G $79.99


  • Family Sharing

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

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