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The main fun of Digimon Story Cyber Sleuth is raising up a small army of Digimon. Unlike the Pokémon games, where you're encouraged to focus on one core team, Cyber Sleuth wants you to experiment with Digivolving, De-Digivolving, and swapping out your party members for the critters in your farm.

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Digimon Story: Cyber Sleuth Complete Edition - 10 Digimon You Should Have In Your Party
There are a ton of Digimon to choose from in this game, but these ones will be the best additions to your team.

There is one thing standing in the way of your fun - you have a stat called Party Memory that limits how many Digimon you can use. The way it works is that every Digimon has a certain amount of memory it takes up. This number increases when it Digivolves.

Updated October 12, 2023, by Sean Murray: Memory is important both in the digital and physical worlds. If you're still looking for all the Memory Up in Digimon Story Cyber Sleuth, we've got you covered with this refreshed guide.

How To Get Memory UP And Memory UP DX

Memory UP Increases Party Memory, so you can field bigger Digimon

Memory UP and Memory UP DX are the only items in Cyber Sleuth that can increase your Party Memory. Unfortunately, you can't buy them or craft them. There are a limited number of Memory UPs available in the Cyber Sleuth story, and they're spread out through the various chapters.

You'll typically receive one after beating a major boss fight, though there are a couple hidden in chests as well.

Once your Digimons' combined memory exceeds your Party Memory, you can no longer add to your party or even Digivolve a current member.

A Memory UP increases your Party Memory by five, while the DX version increases it by ten. Once you have a Party Memory of 100, you can field a full team of Megas, but increasing it further will let you slot stronger Digimon into your reserves.

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Digimon Story Cyber Sleuth: Personality Guide
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Digimon Story: Cyber Sleuth Memory UP Locations

Boss fights will keep you steadily progressing in Party Memory
Screenshot

The three ways to get Memory UP are boss battles, case rewards, and chests found in the wild. The table below details every Memory UP item in the game in chronological order.

Use these items from the Digivice Menu.

Chapter

Item

Method

Notes

2

Memory UP

Boss Drop

The battle against Growlmon in Kowloon Lv. 2.

3

Memory UP

Treasure Chest

The chest is in Kowloon Lv. 3.

3

Memory UP

Boss Drop

The battle against Devimon in Kowloon Lv. 3.

4

Memory UP

Treasure Chest

The chest is in the Shinjuku Digital Shift.

4

Memory UP

Case Reward

Urgent Case 06: Nightmare Eater

5

Memory UP x2

Boss Drop

The battle against two BlueMeramon in the Avalon Server.

6

Memory UP

Boss Drop

The battle against Wisemon in the Akihabara Digital Shift.

7

Memory UP

Treasure Chest

The chest is in Kowloon Lv. 4.

7

Memory UP DX

Boss Drop

The battle against Boltmon in Demons' Den.

8

Memory UP

Treasure Chest

The chest is in the Asakusa Digital Shift.

9

Memory UP

Case Reward

Urgent Case 16: La Missel

10

Memory UP

Treasure Chest

The chest is in the Valhalla Server.

10

Memory UP DX

Boss Drop

The battle against Machinedramon in the Valhalla Server.

11

Memory UP

Treasure Chest

The chest is in Nanako Underpass.

13

Memory UP

Case Reward

Urgent Case 18: Shinjuku Food Tour

14

Memory UP

Boss Drop

The battle against Ebemon in Makoto Yamashina's Memory.

15

Memory UP

Boss Drop

The battle against Dynasmon in the Shibuya Digital Shift.

15

Memory UP

Treasure Chest

The chest is in the Ueno Digital Shift.

15

Memory UP

Boss Drop

The battle against BanchoLeomon in the Ueno Digital Shift.

15

Memory UP

Case Reward

Urgent Case 19: Yuuko and Yuugo

16

Memory UP

Treasure Chest

The chest is in Kowloon Lv. 5.

16

Memory UP DX

Boss Drop

The battle against Craniamon in Kowloon Lv. 5.

16

Memory UP

Case Reward

Urgent Case 21: Ghost Cat Building

16

Memory UP DX

Boss Drop

The battle against Examon in Odaiba.

17

Memory UP

Case Reward

Optional Case 19: Dr. Datamon Develops Medicine

17

Memory UP

Boss Drop

The battle against Crusadermon in the Akihabara Digital Shift.

18

Memory UP DX

Boss Drop

The battle against Crusadermon in Beginning in EDEN.

19

Memory UP DX

Boss Drop

The battle against Dynasmon in Tokyo Metropolitan Office 30F.

19

Memory UP

Treasure Chest

The chest is in Tokyo Metropolitan Office 30F.

19

Memory UP

Treasure Chest

The chest is in Tokyo Metropolitan Office 39F.

19

Memory UP DX

Boss Drop

The battle against Eater Adam on the Tokyo Metropolitan Office Roof.

19

Memory UP DX

Boss Drop

The battle against Leopardmon on the Tokyo Metropolitan Office Roof.

19

Memory UP

Case Reward

Optional Case 16: Dr Datamon Medicine Complete

19

Memory UP

Case Reward

Urgent Case 22: Boy A

19

Memory UP

Case Reward

Urgent Case 23: Comeback Show

19

Memory UP

Case Reward

Urgent Case 24: Rina Shinomiya's Challenge

Next: Digimon Survive vs. Digimon Story: Cyber Sleuth - Which Is Better?