Chaos Zone

Chaos Zone (混沌領域) is an otherworldly dimension where the Chaos Beasts emerged in Mass for the Dead.

Background
The result from a crack in reality in "this world," leading to the Chaos Zone which suddenly comes and goes.

Needless to say, it is not clear what is waiting. Different enemies existences are assumed. Their behavior is unexpected, and the situation is left to the discretion.

Momonga interested in this strange phenomenon sends a team to survey this mysterious space and bring back as much useful information and resources as possible for himself and the Great Tomb of Nazarick.

Layout
The Chaos Zone manifests as a crack in reality leading to a void-like dimension filled with purple-blue fog where many monsters lurk. The zone serves as a special event zone and periodic occurs in the game at designated times:

Times

 * March 13, 2019 @ 3:00 PM
 * April 19, 2019 @ 3:00 PM
 * May 8, 2019 @ 3:00 PM
 * June 12, 2019 @ 3:00 PM
 * August 19, 2019 @ 3:00 PM
 * September 12, 2019 @ 3:00 PM
 * November 20, 2019 @ 3:00 PM
 * January 5, 2020 @ 3:00 PM
 * April 10, 2020 @ 3:00 PM

Trivia

 * The Chaos Zone allows players in the game to acquire point rewards and ranking rewards by accumulating event points that can be earned by completing quests.