Dungeon Fighter Online — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Scheduled Maintenance JUN 9, 2026 | 2026-06-09 | We will be performing a scheduled maintenance on JUN 9, 2026 (UTC). Further details regarding the maintenance are listed below for your reference. UTC (Universal Time Coordinated): JUN 9, 03:30 – JUN 9, 11:30 KST (Korean Standard Time): JUN 9, 12:30 – JUN 9, 20:30 PDT (Pacific Daylight Time): JUN 9, 20:30 – JUN 9, 04:30 EDT (Eastern Daylight Time): JUN 9, 23:30 – JUN 9, 07:30 - Delezie: Accursed - Safe Amplification Support! - Gather Dawn Remnants, End the Accursed Fate! - Beyond the Black Rain, Face the Unsevered Accursed Fate! - Let's Make Stone Mage! - Mystical Arcane Box Item of the Month - Amazing Amplification Support Sale! - Mystical A |
| Delezie: Accursed | 2026-06-09 | Delezie: Accursed The new content "Delezie: Accursed" has arrived. Check out the Content Update details here! Events * Please click the event banner image to move to the Event Details page Accursed Fate Severer! Glory awaits those who challenge! Make and complete the Stone Mage! Get new rewards each time completion stage increases! the Delezie of Plague Raid and collect tokens! A special auction awaits after clearing Hard Mode! out the new Amplifier with increased success chance! Enjoy a 100% success rate for Safe Amplification up til +7! Sales * Please click the sales banner image to move to the Sales Details page Everything you need for Amp |
| Client Patch MAY 26, 2026 | 2026-05-26 | 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 |
| Notice Regarding Temporary Auction Hall Restriction | 2026-05-26 | 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 |
| Regular Update MAY 26, 2026 | 2026-05-26 | Events * Please click the event banner image to move to the Event Details page into Sunken Depths Advanced Dungeons, Legions, and Raids for plenty of rewards! a bonus reward for every login on Day 3! Sales * Please click the sales banner image to move to the Sales Details page Dalvi’s got the heat right here! Limited edition. It’s the real deal don't sleep on it! - Dungeon Fighter Online Support Team |
| Scheduled Maintenance MAY 26, 2026 | 2026-05-20 | We will be performing a scheduled maintenance on MAY 26, 2026 (UTC).Further details regarding the maintenance are listed below for your reference. UTC (Universal Time Coordinated): MAY 26, 03:30 – MAY 26, 10:00KST (Korean Standard Time): MAY 26, 12:30 – MAY 26, 19:00PDT (Pacific Daylight Time): MAY 25, 20:30 – MAY 26, 03:00EDT (Eastern Daylight Time): MAY 25, 23:30 – MAY 26, 06:00 - Oracle’s Equipment Deep Research Season 2- Calceo’s Special Repeat Training - Dalvi's Special Collection Package- Mileage Shop Season 2 (Item update) - Fixed an issue where offensive stats were applied abnormally to the Necromancer's Nicholas Rapport skill.- Fixed |
| Regular Update MAY 12, 2026 | 2026-05-12 | Events * Please click the event banner image to move to the Event Details page into Sunken Depths Advanced Dungeons, Legions, and Raids for plenty of rewards! Craft is back with Canna with fresh vibes! Collect ingredients and craft juice together! Sales * Please click the sales banner image to move to the Sales Details page Buff Enhancement All-in-One Box is included for Mystical Arcane Box Item of the Month! Straight out of a fairy tale, get the new Combo Box for Theater of Puppets Avatars! - Dungeon Fighter Online Support Team |
| Scheduled Maintenance MAY 12, 2026 | 2026-05-07 | We will be performing a scheduled maintenance on MAY 12, 2026 (UTC). Further details regarding the maintenance are listed below for your reference. UTC (Universal Time Coordinated): MAY 12, 04:30 – MAY 12, 11:30 KST (Korean Standard Time): MAY 12, 13:30 – MAY 12, 20:30 PDT (Pacific Daylight Time): MAY 11, 21:30 – MAY 12, 04:30 EDT (Eastern Daylight Time): MAY 12, 00:30 – MAY 12, 07:30 - Canna's Special Juicy Craft - Challenge! Sunken Depths Content Conquest - Mystical Arcane Box Item of the Month - 2026 Arad Pass Theater of Puppets Avatar Combo Box - Fixed an issue so that spaces can be entered in the Raid Group name. - Fixed an issue where t |
| Temporary Maintenance APR 29, 2026 | 2026-04-27 | 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 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 pat |
| Known Issues After APR 21 Maintenance *UPDATED* | 2026-04-23 | 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 Fight |
| Season 9 Act 7. Delezie of Plague | 2026-04-22 | Season 9 Act 7. Delezie of Plague The new content "Delezie Raid" has arrived. Check out the Content Update details here! Events * Please click the event banner image to move to the Event Details page a powerful boost for the battles ahead! Jump to Lv.110 instantly with all the essentials included! the corrupted Sunken Depths! Earn exclusive rewards in the Delezie Raid! Mage arrives with the scent of spring! Complete event missions and obtain rewards! happening in the Forgotten Lab? Earn rewards in Oracle’s Equipment Deep Research! in Supply Operations! Dark Templar-only item for the bonus rewards! all experts for the Delezie Raid! Share your |
| World Boss Abnormal Users Sanctioned | 2026-04-09 | 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 |
| Client Patch APR 8, 2026 | 2026-04-08 | Dear DFO Adventurers, We have released a client patch to fix the following issues. An issue with images in the CERA Shop not being shown properly. 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 |
| Upcoming Changes on APR 21 Maintenance | 2026-04-07 | Please be informed of the following changes that will occur after the maintenance on Tuesday, APR 21, 2026 UTC. ▣ Auction Hall Items ReturnedAll items registered on the Auction Hall will be returned during the maintenance on Tuesday, APR 21, 2026 UTC. ▣ Mileage ResetMileage Points will be reset during the maintenance on Tuesday, APR 21, 2026 UTC. Thank you. - Dungeon Fighter Online Support Team |
| Scheduled Maintenance APR 7, 2026 | 2026-04-01 | 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 - Spring Picnic Lunchbox! - Fast & Vermilion Honey Time! - 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 |
| Upcoming Changes on MAR 24 Maintenance | 2026-03-17 | Please be informed of the following changes that will occur after the maintenance on Tuesday, MAR 24, 2026 UTC.▣ Avatar Market Items ReturnedFixed an issue where the Avatar Market search feature was not functioning properly.All Avatars registered on the Avatar Market will be returned during the maintenance on Tuesday, MAR 24, 2026 UTC.Returned Avatars will be restricted from being re-registered initially and must be Collected to enable registering again.Thank you.- Dungeon Fighter Online Support Team |
| DFO 11th Anniversary | 2026-03-16 | World Boss: Contagion The new content "World Boss: Contagion" has arrived. Check out the Content Update details here! Events * Please click the event banner image to move to the Event Details page prepared a special gift for DFO’s 11th Anniversary! the 11th Anniversary with cosmic rewards! have invaded the spaceship! Fight them off and restore peace to Celarion! valuable resources at the Celarion Resource Outpost! new threat looms on the horizon! Sales * Please click the sales banner image to move to the Sales Details page Sleek astronaut suits to complete that impeccable SF style! chance to own nostalgic Avatars chosen by you the Adventurers |
| Temporary Maintenance MAR 12, 2026 | 2026-03-12 | Greetings, DFO Adventurers,We regret to inform you that we will be performing a temporary maintenance on MAR 12, 2026 UTC.Further details regarding the maintenance are listed below for your reference. We apologize deeply for the inconvenience.UTC (Universal Time Coordinated): MAR 12, 08:00 – MAR 12, 10:00 KST (Korean Standard Time): MAR 12, 17:00 – MAR 12, 19:00 PDT (Pacific Daylight Time): MAR 12, 01:00 – MAR 12, 03:00 EDT (Eastern Daylight Time): MAR 12, 04:00 – MAR 12, 06:00 - System Stability Maintenance- Fixed an issue where CERA Shop purchases will not work properly in the World Boss channel.- Fixed an issue with the Exploration Device |
| Client Patch MAR 11, 2026 | 2026-03-11 | Dear DFO Adventurers,We have released a client patch to fix the following issues.An issue where information for some items is not displayed properlyAn issue with the expiry date for the \ Mystical Fusion Stone Upgrade Ticket purchasable in the Mileage Shop.The following have also been changed through this client patch:The descriptions for Celarion Survivors daily and weekly missions have been revised to be a bit clearer.The HP and defense of the boss monster in Celarion Resource Deep Exploration will be reduced.Please restart your client to apply the changes.We apologize for any inconveniences this has caused.Thank you for your understanding. |
| (Updated - MAR 16 03:13) Known Issues After MAR 10 Maintenance | 2026-03-11 | Greetings, DFO Adventurers, Please take note of the following confirmed issue. ▣ Issue- An issue where speech bubbles in dungeons extend out of bounds at certain resolutions.- An issue where text extends out of bounds on some buttons.- An issue where some text overlaps or extends out of bounds in the chat window.- An issue where daily deletion items are displayed incorrectly in the game exit window.- An issue where the Battle Report is displayed incorrectly.- An issue where the contents of the 11th Anniversary Shop - Awakened Ones the Second Avatar Selection Box (Look) (Female Slayer) are incorrect.- An issue where the buff cutscene do |