Limited Time Event "Anti-Primate Biosphere, Tunguska Sanctuary" is here!
What awaits Chaldea after entering a Special Region to pursue and take down Koyanskaya, who escaped from the Sixth Lostbelt?

In this event, in addition to Main Quests where you can enjoy the story, Raid Quests that are fought by working together with other Masters will be released on a daily schedule.
You can progress in the story by cooperating with other Masters and repelling the enemies that appear, so combine forces to drive away the enemy!

* In-game graphics may vary from the images used within this article.
* Certain quests will be unlocked at a later date.

Event Period:
2023-12-22 00:00 - 12-30 19:59 PST (GMT -8)

Event Eligibility:
Masters who have fulfilled the following conditions may participate. - Clear Part 2 Chapter 6 "Lostbelt No.6: Fae Round Table Domain, Avalon le Fae - The Moment a Planet Is Born" * It will not be necessary to clear Pseudo-Singularities (I-IV).

(Added on December 31st)

* As of 2021-01-01 00:00 PST (GMT -8), Servants whose True Names are hidden will be referred to by their True Name within newly released Main Story chapters, Limited Time Events, certain quests, campaigns, and Pickup Summons.

The official trailer for the Limited Time Event "Anti-Primate Biosphere, Tunguska Sanctuary" is now available on YouTube.
* The trailer will play the first time the app is opened between 2023-12-22 00:00 - 12-30 19:59 PST (GMT -8). * The trailer will be available in Material in My Room during the above period, but will be automatically deleted when the period ends.

Animation Production: A-1 Pictures

A new Mystic Code, "Chaldea Uniform - Decisive Battle", is here!
You can obtain the new Mystic Code "Chaldea Uniform - Decisive Battle" by clearing the Epilogue of "Anti-Primate Biosphere, Tunguska Sanctuary".

(Added on December 31st)

Progress through the Main Quest to fight with all other Masters participating in the event in "Raid Quests" against powerful enemies.

The enemies appearing in these Raid Quests will each have their own Raid Gauges. An enemy's individual gauge will gradually lessen each time you reduce the enemy's HP to 0 in a quest.

Enemy Raid Gauges are shared by all Masters, so cooperate with other Masters and challenge battles multiple times to reduce the gauges. Deplete a Raid Gauge entirely to repel the enemy.

After depleting an enemy’s Raid Gauge, a "Final Assault" against that enemy will appear. Defeat all of the enemies to progress in the story.
Challenge battles multiple times to force enemies to retreat!

* If defeated in battle, you can use three Command Spells or one Saint Quartz to be revived and continue. * Once an enemy's Raid Gauge has reached zero, the battle will end and you will no longer be able to challenge that enemy. * It may take some time for the "Final Assault" to begin after an enemy's Raid Gauge has been reduced to zero.

Enjoy the story through Main Quests that will be unlocked daily, as well as by clearing the "Final Assaults" that will take place after clearing special battles fought in cooperation with other Masters.

* Some sections of the Main Quest will be unlocked once you clear a "Final Assault". * This event does not contain any Free Quests.

Prologue and Epilogue Unlocked!

The Prologue and Epilogue of the Limited Time Event "Anti-Primate Biosphere, Tunguska Sanctuary" have been unlocked.
The Prologue and Epilogue are playable even if you did not participate in the event.
If you participated in the event, but did not progress the Main Quest past the Prologue, you can still play the Epilogue.

Unlock Conditions:
- Clear Part 2 Chapter 6 "Lostbelt No.6: Fae Round Table Domain, Avalon le Fae - The Moment a Planet Is Born" * It will not be necessary to clear Pseudo-Singularities (I-IV).

(Added on December 31st)

Hints and Strategies, Part 1

The Servants listed below will receive an "ATK Strength" bonus and a "Bond Points Gained" bonus during this event!
Strengthen the eligible Servants to prepare for the event!

* Bonus amounts will vary by Servant. * Mash Kyrielight's "Bond Points Gained" bonus is "Increase Bond gained for all allies, including sub-members". This bonus will not go into effect when selected as Support.

* Servants eligible for an event bonus will not necessarily appear in the event story. * From 2023-12-22 00:00 PST (GMT -8), an "Upcoming Event" filter will be added to the Servant Selection and Servant Enhancement screens. Use this filter to conveniently display only the Servants who will receive a bonus in the event.

Hints and Strategies, Part 2

Equip the Limited Time Craft Essences "★5 (SSR) Empty Garden", "★4 (SR) Darkest before the Dawn", and "★3 (R) Slumbering City", available through the ongoing Saint Quartz Summon, to gain an ATK bonus for the equipped Servant and Bond Points bonus gained for all allies (including sub-members) during Main Quests and Raid Quests within the Limited Time Event "Anti-Primate Biosphere, Tunguska Sanctuary".

The Limited Time "Tunguska Sanctuary Taigong Wang Pickup Summon" is also ongoing for a limited time!
Please see the article linked below for more information.

"Tunguska Sanctuary Taigong Wang Pickup Summon" Details: