Dungeon Fighter Online news & patch notes

Dear DFO Adventurers,

We have released a client patch to fix the following issues.

• An issue where the NPC for an expired event was not removed from Seria's Room. 

Please restart your client to apply the changes.

We apologize for any inconveniences this has caused.

Thank you for your understanding.

- Dungeon Fighter Online Support Team

Greetings, DFO Adventurers,

Please be informed of the following changes that will occur after the maintenance on Tuesday, AUG 4, 2026 UTC.

• Memories of Triumph will be unavailable from Saturday, AUG 1, 09:00 UTC until the Tuesday, AUG 4 maintenance.

  • Dungeon entry will be restricted as of Saturday, AUG 1, 09:00 UTC, and you will be moved to the Town if in the middle of playing.

  • You will still be able to enter the channel and use its NPCs.  

• Unshackled Nightmare (Challenge) will be unavailable from Saturday, AUG 1, 09:00 UTC until Tuesday, SEP 1.

  • Dungeon entry will be restricted as of Saturday, AUG 1, 09:00 UTC, and you will be moved to the Town if in the middle of playing.

  • Unshackled Nightmare (Challenge) will reopen after an adjustment period of approximately one month following the Sky of a Thousand Seas update.

  • Only dungeon entry will be restricted. You will still be able to enter the channel and use its NPCs.  

• World Boss: Contagion will be unavailable from Tuesday, JUL 28, 09:00 UTC until the Tuesday, AUG 4 maintenance.

  • This temporary suspension is required to apply the reward changes coming with the Sky of a Thousand Seas update.

  • You will still be able to enter the channel, claim rewards from the previous week, and use the NPC Shop during this period.

• White Cloud Valley of Dreams and Solidaris of Dreams will be removed along with their channels.

• The Track the Malefic Energy and Annihilate the Maleficents dungeons in the Sunken Depths region will close and be replaced by new dungeons in the Sky of a Thousand Seas region.

• Any Materialized Malefic Clues currently in your possession will automatically be converted into entry materials for the new dungeons.

• Materialized Malefic Clues, including Digming’s Gifts, will no longer be sold in the Secret NPC Shops that appear in Sunken Depths region dungeons.

• Explorer Club's Insignia/Gem system will be removed.

• Repurchase(Rebuy) Tab will be reset during the maintenance on Tuesday, AUG 8, 2026 UTC.

• All items registered on the Auction Hall will be returned during the maintenance on Tuesday, AUG 4, 2026 UTC.

▣ Mileage Reset

• Mileage Points will be reset during the maintenance on Tuesday, AUG 4, 2026 UTC.

• New Items – Available from Both Normal and Extra Rewards (effective AUG 4) 

  • +13 Reinforcement Ticket Box

  • Single-use Amplifier

  • Single-use Reinforcer

  • Super Megaphone

• New Item – Extra Rewards Only (effective AUG 4) 

  • Mystical Arcane Box

• Removed Items – Removed from Both Normal and Extra Rewards (effective AUG 4) 

  • Flashy Golden Pot Hat Avatar Box

  • Gold/Silver Danjin Cape Avatar Box

  • Reinforcement Protection Ticket

  • Echo Megaphone

• The following items available from the CERA Shop and Mileage Shop will be changed after the Tuesday, AUG 4, 2026 maintenance.

• Items No Longer Available (effective AUG 4) 

  • Echo Megaphone

  • Echo Megaphone (Account-bound)

• New Items (effective AUG 4) 

  • Super Megaphone

  • Super Megaphone (Account-bound)

• Rewards for Security Levels will be changed after the Tuesday, AUG 4, 2026 maintenance.

Security Level

Used Security Measures

Previous Reward

New Reward

Secure

OTP Authentication

Security Keeper’s Gift Box

Security Seal Box

Medium

Goblin PIN or Region Lock

None

None

Low

None

None

None

• The Security Seal Box grants 50 Security Seals when opened.

• Unopened Security Seal Boxes will be deleted 24 hours after they are delivered to your Mailbox.

• Security Seals can be exchanged for various items at Seria > Security Seal Shop and do not expire.

Events

Greetings Adventurers,

The Demon King Valarod Transformation Potion Box (Account-bound) will be added to the Seria's Special Shop, which can be exchanged for a Demon King Valarod Transformation Potion Box (Untradable) during the JUL 21 maintenance.

For Adventurers that have already used their Demon King Valarod Transformation Potion Box (Untradable) and cannot exchange it in the Seria Special Shop, please send a ticket to our support center and we will provide you with an account-bound version.

Please note that the Transformation Potion Box (Account-bound) will be issued sequentially after the JUL 21 maintenance.

Thank you.

- Dungeon Fighter Online Support Team

We will be performing a scheduled maintenance on JUL 21, 2026 (UTC). Further details regarding the maintenance are listed below for your reference.

UTC (Universal Time Coordinated): JUL 21, 04:00 – JUL 21, 10:00 KST (Korean Standard Time): JUL 21, 13:00 – JUL 21, 19:00 PDT (Pacific Daylight Time): JUL 20, 21:00 – JUL 21, 03:00 EDT (Eastern Daylight Time): JUL 21, 00:00 – JUL 21, 06:00

Dear DFO Adventurers,

• An issue with the link for moving to It's Back! Bunny Bunny Arad Package's web store page.

• An issue where the rewards for Sky of a Thousand Seas Primer Supply Gift could be received while in unintended channels.

• An issue where the wrong images would be shown for the Four Champions in the Go! Isekai Hero event.

Events

Sales

We will be performing a scheduled maintenance on JUL 7, 2026 (UTC). Further details regarding the maintenance are listed below for your reference.

Greetings, DFO Adventurers,

Adventurers using certain operating systems may experience issues when attempting to agree to the launcher pop-up regarding the changes to our Terms and Policies following the JUN 23 update.

If you are experiencing this issue, please click here while logged in to complete the agreement process.

Please review the updated Terms and Policies carefully before agreeing at the bottom of the linked page.

We sincerely apologize for the inconvenience and thank you for your understanding.

- Dungeon Fighter Online Support Team

Events

We will be performing a scheduled maintenance on JUN 23, 2026 (UTC).

Further details regarding the maintenance are listed below for your reference.

UTC (Universal Time Coordinated): JUN 23, 02:00 – JUN 23, 10:30

KST (Korean Standard Time): JUN 23, 11:00 – JUN 23, 19:30

PDT (Pacific Daylight Time): JUN 22, 19:00 – JUN 23, 03:30

EDT (Eastern Daylight Time): JUN22, 22:00 – JUN 23, 06:30

< Events >

- Go! Isekai Hero

- Oracle's Equipment Deep Research (Season 3)

< Changes/Fixes >

- Fixed an issue where the Male Slayer - Wild Raider's Black Mullet Avatar was abnormally displayed.

- Fixed some minor text issues.

* Rewards for the following events will be given during JUN 23 maintenance.

- JUN 22 ExStream Rewards

Thank you.

- Dungeon Fighter Online Support Team

Greetings, DFO Adventurers,

Please note that Raid Content will be temporarily restricted today to fix some issues.

▣ Restricted time

• UTC: JUN 12, 03:30 - JUN 12, 05:00

• KST: JUN 12, 12:30 - JUN 12, 14:00

• PDT: JUN 11, 20:30 - JUN 11, 22:00

• EDT: JUN 11, 23:30 - JUN 12, 01:00

We will notify you once Raid Content becomes accessible again.

Raid content can now be accessed again.

We sincerely apologize for any inconvenience caused by this issue and thank you for your understanding.

- Dungeon Fighter Online Support Team

Greetings, DFO Adventurers,

Please take note of the following confirmed issues.

▣ Issue

- An issue where the party finder list in Delezie Raid is being shown abnormally.

- An issue where the Raid group info for Delezie Raid is being shown abnormally after completing the Raid..

※ These issues will be fixed today. Information regarding when the fix will be implemented will be posted via a separate notice.

※These issues have been fixed.

- An issue where Wild Raider's Black Mullet Avatar would create bugged images when equipped.

※ This issue is currently under investigation.

We sincerely apologize for any inconvenience caused by this issue and thank you for your understanding.

- Dungeon Fighter Online Support Team

We will be performing a scheduled maintenance on JUN 9, 2026 (UTC). Further details regarding the maintenance are listed below for your reference.

Delezie: Accursed

Events

Sales

Dear DFO Adventurers,

We have released a client patch to fix the following issues.

• An issue with some items being unable to be registered in the Auction Hall.

Please restart your client to apply the changes.

We apologize for any inconveniences this has caused.

Thank you for your understanding.

- Dungeon Fighter Online Support Team

Greetings, DFO Adventurers,

Please note that the Auction Hall will be temporarily disabled to fix some issues.

We will notify you once the Auction Hall becomes accessible again.

We sincerely apologize for any inconvenience caused by this issue and thank you for your understanding.

- Dungeon Fighter Online Support Team

Events

Sales

We will be performing a scheduled maintenance on MAY 26, 2026 (UTC).

Events

Sales

We will be performing a scheduled maintenance on MAY 12, 2026 (UTC). Further details regarding the maintenance are listed below for your reference.

Greetings, DFO Adventurers,

We regret to inform you that we will be performing a temporary maintenance on APR 29, 2026 UTC.

Further details regarding the maintenance are listed below for your reference. We apologize deeply for the inconvenience.

UTC (Universal Time Coordinated): APR 29, 05:00 – APR 29, 07:00 KST (Korean Standard Time): APR 29, 14:00 – APR 29, 16:00 PDT (Pacific Daylight Time): APR 28, 22:00 – APR 29, 00:00 EDT (Eastern Daylight Time): APR 29, 01:00 – APR 29, 03:00

< Changes/fixes >

• Updated the "Celarion Survivors" buff's name.

• Fixed an issue where Oracle's Hidden Shop name was displayed incorrectly.

• Fixed an intermittent issue where the Hosdigg pattern would not be resolved normally.

• Fixed an issue where the Royal Pass Aura Box \ was not provided when renting Royal Pass-exclusive equipment from the Arad Pass.

  • The Royal Pass Aura Box \ will be distributed separately to characters that have already rented Avatars during the maintenance.

Once again, we sincerely apologize for the inconvenience and ask for your understanding.

Thank you.

- Dungeon Fighter Online Support Team

Greetings, DFO Adventurers,

Please take note of the following confirmed issue.

▣ Issue

- An issue where the Celarion Survivors Buff was not removed during the APR 21 maintenance. 

※ This buff will be retained during the event period to ensure all Adventurers can participate in it within the same conditions.

- An issue where the Royal Pass Aura Box \ is missing from the Rental Equipment.

※ This issue will be fixed for all users in a batch update. We will provide details regarding the fix through a separate notice as soon as possible.

We sincerely apologize for any inconvenience caused by this issue and thank you for your understanding.

- Dungeon Fighter Online Support Team

Season 9 Act 7. Delezie of Plague

Events

Sales

Dear DFO adventurers,

We would like to inform you of actions taken recently against accounts involved in cheating and unfair play in the World Boss ranked content. We are committed to providing an equal and fair gameplay experience for everyone in Dungeon Fighter Online, and will continue to take action against those found in violation of our Terms of Use and Community Rules.

Thus, the following account has been banned and removed from leaderboards. Please be reminded that users that are in any way associated with hackers while playing the game (e.g. being in the same party) are also subject to being penalized if involuntary involvement is not reported immediately.

IGN

E*er**l*J*11

If you believe that you have encountered a player cheating, please let us know! You can contact our support team here.

Thank you.

- Dungeon Fighter Online Support Team 

Dear DFO Adventurers,

• An issue with images in the CERA Shop not being shown properly.

Please be informed of the following changes that will occur after the maintenance on Tuesday, APR 21, 2026 UTC.

• All items registered on the Auction Hall will be returned during the maintenance on Tuesday, APR 21, 2026 UTC.

• Mileage Points will be reset during the maintenance on Tuesday, APR 21, 2026 UTC.

We will be performing a scheduled maintenance on APR 7, 2026 (UTC). Further details regarding the maintenance are listed below for your reference.

UTC (Universal Time Coordinated): APR 7, 05:00 – APR 7, 10:00 KST (Korean Standard Time): APR 7, 14:00 – APR 7, 19:00 PDT (Pacific Daylight Time): APR 6, 22:00 – APR 7, 03:00 EDT (Eastern Daylight Time): APR 7, 01:00 – APR 7, 06:00

< Events > - Spring Picnic Lunchbox! - Fast & Vermilion Honey Time!

< Changes/Fixes > - Fixed some minor text issues.

* Rewards for the following events will be given during APR 7 maintenance. - APR 6 ExStream Rewards

Thank you.

- Dungeon Fighter Online Support Team