The event is divided into three parts in the Global server.
|Global||April 15, 2020 ~ April 29, 2020|
|TW||September 30, 2020～ October 14, 2020|
The Forging Steel headhunting banner is featured.
Obsidian Festival Bracelet
During the event, the rewards for Daily Missions are changed to the following:
|Spend a total of 800||50|
|Spend a total of 1600||100|
|Spend a total of 2400||150|
|Gain a total of 50000 Operator EXP through training||50|
|Gain a total of 100000 Operator EXP through training||100|
|Gain a total of 150000 Operator EXP through training||150|
|Spend a total of 80000 to train or promote Operators||50|
|Spend a total of 160000 to train or promote Operators||100|
|Spend a total of 240000 to train or promote Operators||150|
|Spend a total of 1000 at the Credit Store||50|
|Spend a total of 2000 at the Credit Store||100|
|Spend a total of 3000 at the Credit Store||150|
|Send 6 Clues to friends||50|
|Send 12 Clues to friends||100|
|Send 18 Clues to friends||150|
|Defeat a total of 1000 enemies in Annihilation stages||50|
|Defeat a total of 2000 enemies in Annihilation stages||100|
|Defeat a total of 3000 enemies in Annihilation stages||150|
|Clear any stage a total of 40 times||50|
|Clear any stage a total of 80 times||100|
|Clear any stage a total of 120 times||150|
|Defeat a total of 3000 enemies||50|
|Defeat a total of 6000 enemies||100|
|Defeat a total of 10000 enemies||150|
|Use Recruitment 10 times in total||50|
|Use Recruitment 25 times in total||100|
|Use Recruitment 40 times in total||150|
|Assign 100 Operators to restore Morale in the Dormitory||50|
|Assign 200 Operators to restore Morale in the Dormitory||100|
|Assign 300 Operators to restore Morale in the Dormitory||150|
|Complete 50 orders||50|
|Complete 100 orders||100|
|Complete 150 orders||150|
|Produce 100 Pure Gold in the Factory||50|
|Produce 200 Pure Gold in the Factory||100|
|Produce 300 Pure Gold in the Factory||150|
|Conduct 1 Clue Exchange||50|
|Conduct 2 Clue Exchanges||100|
|Conduct 3 Clue Exchanges||150|
|CN||August 27, 2019 ~ September 10, 2019 (as the Summer 2019 event)|
Record Restoration: August 26, 2021
|Global||April 29, 2020 ~ May 13, 2020|
Record Restoration: March 1, 2022
|TW||October 14, 2020 ~ October 27, 2020|
Record Restoration: June 1, 2022
Clear 1-10 to access OF operations.
Extra Show operations are available in the second week of Part 2.
The Summer Guardians headhunting banner is featured.
When entering the event menu for the first time, after watching the Obsidian Festival intro, the player must choose one of the three musical acts listed below, with the choice being permanent for the rest of the event.
The choice will affect the special furniture given by completing the Siesta Obsidian Milestone and the music heard in the OF menu.
|Musical act||Genre||Menu theme||Milestone reward|
Upon choosing a particular band, there wil be a small window featuring trends concerning them.
Siesta Obsidian are awarded from clearing Main Stage operations and completing Daily Missions.
Rewards will be given once the player accumulated a certain threshold of Siesta Obsidians in the Siesta Obsidian Milestone.
Obsidian Festival Ticket
Obsidian Festival Ticket are awarded from clearing Main Stage operations, completing Daily Missions, and the Siesta Obsidian Milestone.
Obsidian Festival Tickets are used to run Fairground operations, which awards Obsidian Festival Token.
Obsidian Festival Token
Obsidian Festival Token are awarded from clearing Extra Show operations for the first time, completing Daily Missions, and the Siesta Obsidian Milestone.
Obsidian Festival Tokens are used for the Capsule Machines.
Siesta Obsidian Milestone
The Siesta Obsidian Milestone rewards can be claimed until March 20, 2020.
- Some parts for Rhodes Island Music Rehearsal Room are obtained by clearing OF operations and from Capsule Machines and Siesta Obsidian Milestone, while most are available in the Furniture Store.
- Siesta Beach Hut is available exclusively in the Furniture Store.
|Global||May 13, 2020 ~ May 27, 2020|
During the event, login to the game to claim the following rewards.
From May 20, 2020:
- Ethan and Breeze replaces Cuora and FEater, respectively, as the Operators purchasable in the Shop Vouchers Store.
- Dur-nar is available on the Credit Store (in a similar way to Courier and Gavial).
The Dancing Lava headhunting banner is featured.