Enter the fray as one of 10 fighters to battle the forces of Kundun as they appear before you in an endless barrage of attacks. Alone or in a team, only the strongest will survive Devil Square. With the help of the "Devils"
Invitation gives you access to Devil Square, where your strength will be tested.
| Devil's Key | Devil's Eye |
 |  |
Items required for crafting:
| Items for combination | Assembly prediction |
| x1 Devil's Key x1 Devil's Eye x1 Jewel of Chaos |  |
| Devil's Square Ticket |
Number of participants in Devil Square
The first 10 players to bring an invitation from NPC Charon will gain entry to Devil Square. NPC Charon is located in Noria at coordinates (172,106).
* The party can be held both inside and outside Devil Square.
| NPC "Charon" |
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Devil Square Opening
- 22 times a day
Devil Square Rules
- The invitation to Devil Square will be removed from your inventory when you enter Devil Square.
- The warp command can be used after entering Devil Square.
- You are not allowed to enter it after all 10 spots are filled.
- When a character dies in Devil Square, they are teleported to Event Map Square.
- A player who uses "Town portal scroll" in Devil Square will be teleported to Event Map Square.
- When a player dies in Devil Square, EXP is not lost.
- When a player dies in Devil Square, Zen is not lost.
- Character items are not dropped when a character dies.
- PK is not allowed in Devil Square.
- Characters that remain in Devil Square after a search will be returned to Event Map Square.
Event Map Square
(1) Description
- "Event Map Square" is an area where you can enter the main events of Mu Online.
- Devil Square is an event that can be applied for at "Event Map Square".
- You can only apply for the event at "Event Map Square".
- NPCs that are part of the described events have been moved to "Event Map Square".
(2) Steps to follow
- How to move to "Event Map Square"
Moving with the "M" command panel
1. Press the "M" key and click "Event Square" to enter.
2. Your Zen will be reduced by 20,000 after entering "Event Square".
Moving with the notification icon
1. You can enter "Event Square" using the notification icon in the game.
2. Your Zen will be reduced by 20,000 after entering "Event Square".
| Event Map Square | Devil Square Entry notification icon |
 |  |
| (2) | (3) |
 |  |
Notification of acceptance
(1) Description
- The notification icon will appear when the event is available for entry.
- The event icon will be displayed on the game screen when it is available for entry, and will disappear when the entry time has passed.
- You will be taken to the "Event Map Square" by clicking on the event notification icon.
- The notification icon will be shown below.
(2) Notification Icon Locations
- Notification icons will be displayed on the upper left side of the game screen.
(3) How to Use
- When it is time to enter the event, click on the notification icon.
- A pop-up window will appear when clicked.
- Click OK on the pop-up window to proceed to the "Event Map Square".
- In the "Event Map Square", find the event NPC and request admission to the event.
Schedule
(1) The event schedule has been changed.
(2) Devil Square Event Schedule
| Devil Square |
| 3:20 |
| 3:50 |
| 5:20 |
| 7:20 |
| 9:20 |
| 11:20 |
| 13:20 |
| 15:20 |
| 17:20 |
| 19:20 |
| 21:20 |
| 21:50 |
| 22:20 |
| 22:50 |
| 23:20 |
| 23:50 |
| 24: 20 |
| 24:50 |
| 1:20 |
| 1:50 |
| 2:20 |
| 2:50 |
Level requirement to enter Devil Square
| Devil Square | Level Characters | Entrance cost |
| 1 | 50 ~ 399 | 25,000 zen |
| 2 | 400 ~ 799 | 80,000 zen |
| 3 | 800 ~ 899 | 150,000 zen |
| 4 | 900 ~ 1099 | 250,000 zen |
| 5 | 1100 ~ 1299 | 400,000 zen |
| 6 | 1300 ~ 1499 | 650,000 zen |
| 7 | 1500 ~ X | 1,000,000 zen |
Reward in Devil Square
(1) Information
- In addition to the existing rewards in the specified events, an additional reward "Mastery Box" is added.
* The reward can only be received by the level master participating in the events.
- The "Mastery Box" contains new currency, Ruud items, and other items.
- The Mastery Box is used by right-clicking on it in the general inventory.
- There are 3 types of "Mastery Box"
| Mastery Box (Low) | Mastery Box (Intermediate) | Mastery Box (Advanced) |
 |  |  |
- If you do not achieve the event goal, you will not be able to obtain the "Mastery Box".
(2) How to obtain the "Mastery Box"
- According to the contribution points obtained in events, you can obtain the "Mastery Box"
* Depending on the contribution level, you will receive one of 3 "Mastery Boxes".
* The Energy Elf (with more than 1500 energy) will receive contribution points according to the points of his party members.
- The reward will be paid out at the end in the "Gremory Case" system.
- The contribution points differ depending on the type of event being played.
| Events | Level That Gets Contribution | Obtaining Contribution |
| Devil Square | Master Level | 1. Party and Individual Contribution Review. 2. Obtaining Contribution in Party and Individual: Kill Monsters |