Mansfield Break
| Event | Rerun | Synopsis | Medals | BGM | OST | Gallery |
| This event has been released and added to Record Restoration in the Global server of Arknights, and its relevant stories and operations are now available in the Archives and Terminal, respectively. As such, the content of this page and the related subpages have been archived. |
Mansfield Break (MB) is the seventh Side Story in Arknights.
Operations
Clear 1-10 to access MB operations.
| Escape Plan | MB-1 • MB-TR-1 • MB-2 • MB-3 • MB-ST-1 • MB-4 • MB-5 • MB-6 • MB-7 • MB-8 • MB-ST-2 |
|---|---|
| Mansfield Daily Life | MB-EX-1 • MB-EX-2 • MB-EX-3 • MB-EX-4 • MB-EX-5 • MB-EX-6 • MB-EX-7 • MB-EX-8 |
| Additional information | |
| |
Additions
New devices: Imprisonment Device
New enemies:
| Normal |     |
|---|---|
| Elite |         |
| Boss |  |
Annihilation
Frozen Abandoned City is introduced as the new Rotating Mission in July 5, 2021.
Operators
The following Operators will gain 50% more trust (except from Annihilation):
    |
Headhunting
- Main article: Headhunting/Banners/Former-2021
The Jail Tiger Unchained headhunting banner is featured.
Factory Steel
- Main article: Factory Steel
Be Prepared
The Be Prepared rewards can be claimed until July 13, 2021.
| Mission | Reward | ||
|---|---|---|---|
| Clear MB-1. |
| ||
| Clear MB-2. |
| ||
| Clear MB-3. |
| ||
| Clear MB-3 with 3 stars. |
| ||
| Clear MB-4. |
| ||
| Clear MB-5. |
| ||
| Clear MB-5 with 3 stars. |
| ||
| Clear MB-6. |
| ||
| Clear MB-6 with 3 stars. |
| ||
| Clear MB-7. |
| ||
| Clear MB-7 with 3 stars. |
| ||
| Clear MB-8. |
| ||
| Clear MB-8 with 3 stars. |
| ||
| Clear MB-EX-1. |
| ||
| Clear MB-EX-2. |
| ||
| Clear MB-EX-3. |
| ||
| Clear MB-EX-4. |
| ||
| Clear MB-EX-5. |
| ||
| Clear MB-EX-6. |
| ||
| Clear MB-EX-7. |
| ||
| Clear MB-EX-8. |
| ||
| Clear MB-EX-8's Challenge Mode. |
| ||
| Clear MB operations except MB-TR-1 15 times. |
| ||
| Clear MB operations except MB-TR-1 45 times. |
| ||
| Clear MB operations except MB-TR-1 85 times. |
|
Secret Channel
To buy all items with limited stock from the Secret Channel, the player must spend 6004 
.
Escape Plans missions give up to 1200 while first clear rewards of MB operations give up to 900 , thus requiring the player to farm an additional 3904 from MB operations.
Unlike previous major side story events, free-to-play players will not have enough 
Sanity to farm the Factory Steels needed to clear the Secret Channel, even if one saves two 
Top Emergency Sanity Potion given from Weekly Missions a week prior to the event. If this is the case, then one best prioritizes buying the following items, in the specified order:
- All five
Robin's Token - All Mansfield Prison Cell parts
- 3 stocks of
Headhunting Permit - 5 stocks of
D32 Steel - 10 stocks of
RMA70-24, 
White Horse Kohl, and 
Sugar Lump - 100 stocks of 5000
LMD - 25 stocks of
Tactical Battle Record - 50 stocks of
Strategic Battle Record
The Secret Channel is open until July 13, 2021.
| Ware | Price | Stock |
|---|---|---|
 1 |
200
|
1 |
1 |
240
|
1 |
1 |
280
|
1 |
1 |
320
|
1 |
1 |
360
|
1 |
 1 |
150
|
3 |
 1 |
100
|
5 |
 1 |
40
|
10 |
 1 |
35
|
10 |
 1 |
30
|
10 |
 |
100
|
1 |
 |
60
|
1 |
 |
55
|
1 |
 |
45
|
1 |
 |
30
|
1 |
 1 |
10
|
10 |
 1 |
8
|
15 |
 5K |
7
|
100 |
 2 |
5
|
25 |
 2 |
3
|
50 |
 2 |
1
|
120 |
 1 |
4
|
25 |
 1 |
2
|
50 |
 1 |
4
|
25 |
 1 |
4
|
25 |
 1 |
3
|
25 |
 1 |
6
|
4 |
 10 |
2
|
200 |
20 |
1
|
∞ |
Outfits
The following outfits are available in the Outfit Store:
| New |     |
|---|---|
| Old |    |
Furniture
The Mansfield Prison Cell furniture set is available; some of its parts are awarded from completing Be Prepared missions while others are available in the Secret Channel and Furniture Store.
Miscellaneous
Operator Records and Paradox Simulations are introduced for the following Operators:
As implementing them requires a direct update to the game client, it is important to bind the player's account to avoid data loss and the game have to be manually updated from the Google Play Store/iOS App Store.
Media
Trivia
- The Chinese and Japanese titles literally mean "the Storm/Chaos over the Lonely Isle" (referring to the Mansfield State Prison).
- MB's schedule differs from each other in different servers:
- In the TW server, Mansfield Break was delayed until late October 2021 to allow Operation Originium Dust to be released in September 2021.