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Maintenance Updates and Patch Notes (December 24)

Maintenance Updates and Patch Notes (December 24)

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Chaos Zero Nightmare | Maintenance Updates and Patch Notes (December 24) - GameWith

December Maintenance Updates and Patch Notes in Chaos Zero Nightmare. Includes Galactic Disaster Chapter 2 Forbidden Catalyst new contents, special login events and rewards in CZN.

Table of Contents

Patch Updates

December 24 Update

New Story

Galactic Disaster Story Chapter 3, Catalyst of Evolution, becomes playable after the Dec 24, 2025 maintenance for players who clear Act 2 Episode 7, Approaching the Forbidden.

Galactic Disaster - Season 1 Forbidden Catalyst

The Great Rift Second Half Begins

The Great Rift Second Half

Schedule2/24/2025 after the maintenance – 1/14/2026 before the maintenance

Upon entering the Lobby after the second half begins, you will receive ranking rewards from the first half.

The Great Rift Guide

3rd Supply Store Open

3rd Supply Store

Schedule2/24/2025 after the maintenance – 1/14/2026 before the maintenance

You can obtain rewards from the Supply Store using [Pure White Fragment], a currency that can only be acquired in Laboratory 0.

Forbidden Catalyst Guide

Galactic Disaster Content Changes

New ScheduleBefore: 01/13/2026 18:00 (UTC+0)
After: 01/14/2026 before the maintenance

The season end time for Galactic Disaster: [Forbidden Catalyst] will be extended.

New Currency – Spectral Cube Added

Spectral Cube

When acquiring any duplicate ★5 Combatant after reaching the maximum acquisition limit, you will receive a new currency Spectral Cube. Spectral Cube] can be used to purchase various items from the Spectral Cube Shop.

Spectral Cube Shop

Spectral Cube can be used to purchase various items from the Spectral Cube Shop.

Memoirs of the Bureau Chief of the Ark Protection Bureau

Schedule12/24/2025 after the maintenance – 1/14/2026 before the maintenance

The year-end commemorative event, Memoirs of the Bureau Chief of the Ark Protection Bureau, will be available. You can earn rewards by completing missions that unlock over time on the event page.

Toward the First Light

Schedule12/24/2025 after the maintenance – 1/14/2026 before the maintenance

The New Year commemorative event, Toward the First Light, will be available. Based on the total amount of Aether used during the event period, you can clear event nodes to earn completion rewards and discover Agents’ Wish Notes.

Overdrive - Simulation

Overdrive - Simulation

Schedule12/30/2025 18:00 (UTC+0) – 01/06/2026 17:59 (UTC+0)

During the Overdrive - Simulation event, players can earn double rewards from Simulations each day. You can receive 2x rewards from up to 6 Simulation runs. These bonus opportunities reset daily at 18:00 (UTC+0) during the event period.

Garden Cafe’s Returnee Present

Schedule14 days from the date of return (available on an ongoing basis)

A special surprise event will be held at the Garden Cafe for Protos returning to Chaos Zero Nightmare. Based on the total amount of Aether used during the event period, you can earn various rewards prepared by Bella.

Happy New Year 2026! Check-in Event

Schedule12/31/2025 18:00 (UTC+0) – 01/13/2026 17:59 (UTC+0)

To celebrate the arrival of 2026, claim a surprise daily check-in rewards by logging in each day.

Rei’s Gift Event

Rei’s Gift Event

Schedule01/06/2026 18:00 (UTC+0) – 01/20/2026 17:59 (UTC+0)

To celebrate the arrival of 2026, we’ve prepared surprise daily check-in rewards you can claim by logging in each day.

Virtual Tactical Simulation Event – [Sereniel]

Schedule12/24/2025 after the maintenance – 1/14/2026 before the maintenance

During the Seasonal Rate Up period for the new combatant [Sereniel], you can experience the combatant Sereniel, Nia, and Selena through the Virtual Tactical Simulation event. You can play the trial stage using fixed Save Data that includes the trial Combatant.

New Seasonal Combatant Sereniel Rescue Rate Up

Rescue Rate Up

Schedule12/24/2025 after the maintenance – 1/14/2026 before the maintenance

The new seasonal combatant Sereniel will be not added to the Normal Combatant Rescue pool after the rate up period ends. She is available only during this limited-time seasonal event, making her a rare and highly sought-after addition to any roster.

Sereniel Guide

New Seasonal Partner Peko Rate Up Rescue

Schedule12/24/2025 after the maintenance – 01/14/2026 before the maintenance

The seasonal partner Peko is available only during the limited-time Rate Up and offers unique abilities that synergize with Sereniel, making her a must-have before the event ends.

Battle Missions Additions & Improvements

Battle Missions Additions

Details
  • Battle Mission Chapter 8 will be unlocked, with both Normal and Hard difficulties added.
  • Normal Difficulty Unlock Condition: Achieve Elite Captain, clear Chapter 7 Normal B06
  • Hard Difficulty Unlock Condition: Achieve Elite Captain, clear Chapter 7 Normal B06 and Chapter 7 Hard B06
  • A new Battle Mission difficulty [Abyss] will be added.
  • Battle Mission [Abyss] Chapters 1–3 will be unlocked.
  • Unlock Condition: Clear Battle Mission Hard Chapter 3 B6
  • The [Abyss] difficulty features enemies of a higher level than Hard difficulty.
  • You can earn rewards by clearing missions.
  • Enemies that possess Rare Species or gain increased damage after a certain number of turns will also appear, so we encourage Protos to take on the [Abyss] challenge.

Ark City – Disaster Scenario Improvements

Details

  • The progression flow of Ark City Disaster Scenarios will be improved.
  • Disaster scenarios will focus on carrying out Relief Operations to restore City Management Index values reduced by disasters.
  • Readability of text in Calamity Relief Operations will be improved.
  • City Management Index icons will now be displayed for each operation objective.
  • Objectives that fall below required City Management Index values will now be shown in red text.
  • When assigning Aides, their Affinity level will now be visible.
  • Aides will be sortable by Affinity level during assignment.
  • When assigning Aides, Combatants in a Deep Trauma state will be identifiable.
  • On the Policy selection screen, gauges for increased and decreased indices will now feature highlight effects.
  • The background of the Operation Results screen will now be changed based on the outcome.
  • The Policy Office background will be updated to better match each disaster scenario’s theme.Policy Point icons will be redesigned for improved clarity.

Chaos – Fate Improvements

Among Permanent and Unlockable Fates, effects with low efficiency or low selection rates relative to their grade will be improved/reworked.

1) Reworked Fate


Before
After
Satiety
Before: Increase max Health by 10%.
Obtain 1 random Common Neutral Card.
Courtship
An Aether-Eater will appear inone of the Normal Battle Areas.

When entering an Elite Area, decrease Health of monsters by 20%.

2) Improved Fates


Before
After
Revelation
Guarantees a piece of Legendary Equipment when receiving an Equipment Reward from Elite Areas (next 1 time).
Guarantees a piece of Legendary Equipment when receiving an Equipment Reward from Elite Areas (next 2 times).
Tenacity
Decrease current Health by 50%. Upon arriving at a Waypoint Area, obtain 2 random Legendary Equipment (next 1 time).
Decrease current Health by 50%. Obtain 2 random Legendary Equipment.
Hope
Upon victory in Normal Battle Areas, there is a 30% chance for a random piece of Rare Equipment to appear as a reward.
On winning the battle in a Normal Battle Area, there is a 30% chance for a random Rare - Legendary Grade Equipment to appear as a reward.
Prudence
Lose 100 Credits. Obtain 1 random Legendary Neutral Card.
Lose 50 Credits. Obtain 1 of 3 random Legendary Neutral Cards.
Mistreatment
Upon each victory in Unidentified Areas, gain 50 Credits.
On entering an Unidentified Area each time, obtain 25 Credits.
Gluttony
Decrease current Health by 30%. When moving to another Area, gain 10 Credits.
On each move to a new area, obtain 10 Credits.
Encouragement
On entering the Dellang Shop each time, 1 random displayed item will be on sale for 50% off (next 2 times).
On entering the Dellang Shop each time, 1 random displayed item will be on sale for 100% off(next 3 times).
Tranquility
Reduces the number of Break Recovery cards required for all Combatants by 1.
Decrease the number of Break Recovery cards required by all Combatants by 2.
Persevere
At the end of the battle, recover 5% Health.
At the end of battle, recover 10% Health.
Satiety
Increase max Health by 10%.
Increase max Health by 10%. Obtain 1 random Common Neutral Card.

New Package Added

New items have been added along with to the “Silver Winter Star Festival” Shop.

Year-End / New Year’s Greetings Added

Details
  • When you enter the Lobby on December 25, the combatant assigned to your Lobby will deliver a Holiday greeting.
  • When you enter the Lobby on January 1, the combatant assigned to the Lobby will deliver a New Year’s greeting.
  • Holiday / New Year greetings will play in the following situations.
  • When logging into the game
  • When changing the Home background
  • Setting the Lobby to a Special Illustration or Combatant

Improvements

Improvements

QoL Improvements
  • The Combatant > [Replenish Materials] pop-up will be improved to clearly display the owned and required amount.
  • The Chaos map will be improved to display more area information on a single screen.
  • If materials are still insufficient after completing a Simulation via an item acquisition source, the Move to Upgrade button will now be displayed.
  • Codex Achievement will be renamed to [Codex Record] to clearly distinguish them from Achievements.
  • A red dot indicator will now appear when there are Counseling Records with unclaimed rewards.
  • The maximum number of Corrupted Data per combatant will be increased from 10 to 100.
  • Information explaining the maximum Corrupted Data capacity will be added to the Save Data management screen and Help menu.
  • All Present descriptions will now include a button that links to their acquisition source.
  • To improve visibility on the Event page, arrow icons will be added to the Event list.
  • A NEW icon will be added to Shop categories to highlight newly available items.

Other Improvements

  • Equipped Mythic-grade equipment can be replaced with another Mythic-grade item of the same part.
  • A new playback-speed feature will be added to Unidentified Areas.
  • When initiating training in a Safe Zone, the animation that displays Credit consumption will be improved.
  • An additional confirmation step to prevent accidentally skipping selections during training in Safe Zones will be added.
  • The difficulty of battles featuring Gloomy Godmother will be reduced. - The difficulty of the Wolves Bane battle will be reduced.
  • The difficulty of the Empty Mouths battle will be reduced.
  • The Blockade effect previously applied by Phropto will be adjusted to Suppression.
  • Before: Card effect does not trigger. Blockade is removed upon use.
  • After: Decrease Damage, Shield Gain, and Heal Amount by 20%. Suppression is removed upon use.
  • Additional clarification to Chizuru’s “Inhibit” text regarding AP acquisition will be added.
  • Cannot gain AP except at the start of the turn or on Ravage. Add 1 Hit to Shadow of the Moon, Shadow of the Moon+
  • Except for AP gained at the start of the turn or upon Ravage, AP cannot be gained or lost by any other effects, including cards, equipment, or Fate.
  • The application scope of the “Elasticity” effect possessed by the Great Rift boss “Beginning of Desire” will be adjusted. Damage from retaining Opening Found or discarding Dirge Bullet is not affected by Elasticity.
  • When changing your Captain nickname, a cooldown period will be applied before it can be changed again. (Cooldown: 72 hours)
  • The UI will be improved to clearly distinguish Basic Cards, Unique Cards, and Neutral Cards. - The Zero Matrix season end date will be changed.
  • Before: 01/13/2026 18:00 (UTC+0)
  • After: 02/03/2026 18:00 (UTC+0) - Descriptions of 5 equipment items will be updated for clarity.
  • 1) Amorphous Cube
  • Before: At the start of battle, +25% Damage
  • After: +25%damage
  • 2) The Golden Rule
  • Before: At the start of battle, +20% Damage, +20% Shield Gain
  • After: +20% Damage, +20% Shield gain
  • 3) Gloomy Prime’s Eye
  • • Before: At the start of battle, +40% Shield Gain • After: +40% Shield Gain
  • 4) Rune Lance
  • Before: When using 5 or more AP, +25% Damage, Shield Gain, and Healing
  • After: When using 5 or more AP, +25% Damage, Shield Gain, and Healing (1 time per battle)
  • 5) Twisted Discipline
  • Before: When using 10 or more AP, +2 Immunity
  • After: When using 10 or more AP, +2 Immunity (1 time per battle)
  • To improve understanding of the [Tenacity] rules, the existing help text will be updated.
  • Change Details
  • ㄴ Some monsters possess Tenacity.
  • ㄴ “Tenacity Damage” is determined by a card’s cost, and this damage decreases if the card is neither of a Weakness Attribute nor a Targeting card.
  • ㄴ However, “Tenacity Damage” applied directly through card effects is not affected by increases or decreases based on card effects, Weakness Attributes, or Targeting status.
  • Functionality remains unchanged.
  • Rewards for some event choices in Chaos Order Unidentified Area have been improved, and new situations and choices have been added.

Bug Fixes

Bug Fixes

Details
- An issue where the Affinity Lv. 7 rewards for Maribell and Mika were displayed incorrectly will be fixed.
- An issue where the UI was not displayed correctly when Rescue Records were skipped rapidly will be fixed.
- An issue where progression was intermittently blocked when attempting a retry will be fixed. - An issue where touch interactions did not function properly in certain areas of Potential Nodes 6 and 7 will be fixed.
- An issue in the Japanese version where some Shop sub-tab text was not displayed will be fixed.
- An issue where Roman alphabet icons were not displayed on the Memory Fragment crafting screen will be fixed.
- The bodyguard illustration for the Partner Rosaria will be partially updated.
- An issue where UI sound effects were not played in certain screens will be fixed.
- An issue where the Reload description was duplicated on Veronica’s Pendant of Resolution card will be fixed.
- An issue where, after Owen’s 3rd Epiphany of Wind Riding is applied and the card is used, the effect tab incorrectly displayed the description as Wind Riding will be fixed.
- An issue where the hexagonal background for temporary alliance stage buffs was not displayed in the in-game Team Info screen will be fixed.
- An issue where text was cut off when moving between Exchanges with sub-tabs while the language was set to Japanese will be fixed.
- An issue where an error occurred in specific situations when enemies were defeated by Tressa’s Ego Manifestation Stage 6 effect will be fixed.
- An issue where Maribell’s Shelter Hold card displayed the Shelter Defense illustration after Potential enhancement will be fixed.
- An issue where sound effects were cut off when the monster Elemental Phoenix transformed into a Phoenix Seed, or when a Phoenix Seed revived into an Elemental Phoenix, will be fixed.
- An issue where sound effects did not play when the monster Seraphim of Pain appeared will be fixed.
- An issue where sound effects did not play correctly when the monster Seraphim of Pain took action will be fixed.
- An issue where sound effects did not play when the monster Ghoul Slave appeared will be fixed.
- An issue where sound effects did not play when debuffs or buffs were triggered by using a Breakdown Card will be fixed.
- An issue where equipment not obtainable from the Blue Pot incorrectly appeared in the Collection will be fixed.
- An issue where the sticker reward was not granted upon completing Pilgrims of Nightmare under Achievements > Journey Log will be fixed.

Combat Related Bug Fixes

Details
- An issue where Battle Mission B08 is not displayed within the Forbidden Catalyst story will be fixed.
- The description of the “Inhibit” effect will be revised for clarity.
- An issue where Neutral Cards that could not be obtained were selectable in certain situations will be fixed.
- An issue where the [Ambush] card obtained via the Liberation Fate could be used while in a Breakdown state will be fixed.
- An issue where the card list did not appear in certain situations when receiving the “Trigger Epiphany on 1 selected card” reward in Unidentified Areas will be fixed.
- An issue where promotion stat bonuses were not applied to trial Save Data Combatants will be fixed.
- The Judgment’s Flames Memory Fragment 4-set effect will be adjusted to apply only to cards.
- An issue where Will-O'-Wisp was not obtained when attacking an Aether-Eater in a Cursed Shackles state using cards granted by the Aether-Eater will be fixed.
- An issue where animations were not displayed when using Veronica’s Bombardment Prep card via a card activation effect will be fixed.
- An issue where Mei Lin’s Rising Dragon Spire card did not deal the correct number of hits based on the “number of Passion cards used that turn” when the 5th Epiphany enhancement was triggered will be fixed.
- An issue where the damage highlight was not displayed on the 5th card hit of Yuki’s Flash Slash will be fixed.
- An issue where emphasis highlights were displayed incorrectly in the 2nd and 4th card descriptions of Kayron’s Brand of Annihilation will be fixed.
- An issue where the “upon removal, Stun” text was not displayed for the Requiem persistent effect of the monster Guardian of the Soul will be fixed.

Past Update Information

December 3 Update Information

Maintenance Updates

December 17 Patch Notice

November 15 Patch Update

Patch ScheduleDecember 17, 2025 13:30 — 14:00 UTC

Update Details

  • Error Fixes
  • ㄴ An issue where the weekly cumulative score is not updated when a player fails to record a score higher than their previous highest score in the Great Rift.
  • ㄴ An issue where, for accounts affected by the reset after the December 17 temporary maintenance, rankings are only updated when a score higher than the pre-reset score is achieved.
  • Please note that gameplay records between the end of the December 17 temporary maintenance and the application of the non-maintenance patch will not be saved. For accurate record tracking, we recommend playing after the non-maintenance patch is applied.
  • This issue only applies to Protos whose accounts were subject to the reset measures.

December 17 Temporary Maintenance

Maintenance ScheduleDecember 17, 2025 05:30 – 08:00 UTC

Update Details

  • Improved tooltips regarding the cost reduction duration for Combatant Chizuru's Bound At Dusk 2nd and 5th Epiphany cards
  • Laboratory 0 > Demise Gate Unidentified Area Appearance Timing & Choice Update
    → Appearance Timing
    ㆍBefore: Late phase of the Chaos Interior
    ㆍAfter: Early phase of the Chaos Interior
    → “Ask about the elevator” Choice Update
    ㆍBefore: None (informational option
    ㆍAfter: Trigger Nihilum Epiphany to 1 random card
  • Follow-up measures for the Chaos progression reset issue
  • Fixed an issue where the Chaos progression reset when proceeding with the story after using Temporary Return during Chaos

Past Maintenance Updates

Past Maintenance Updates and Patch Notes

Chaos Zero Nightmare Related Guides

Back to Home
2026 Roadmap Showcase

Galactic Disaster Season

Beginner Tips

Character Enhancement Guides

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Chaos Zero Nightmare Strategy Team

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