UNDER CONSTRUCTION! Translations check and summaries are needed.
The game launched on January 6, 2016 with the first five Story Zones already released. The following is a chronology containing a list of all the plot-related events (plus various multiplayer events) released during the game's 4 years of operation. The events periods are listed under the JST clock.
If you are looking for a full timeline so you can watch the game's cutscenes in the right order, you're in the right place! Multiplayer/Search/Stamp Rally events didn't have a plot whatsoever, so those aren't included in the offline version.
Beware of unmarked spoilers!
An official (but incomplete and sometimes inaccurate) chronology of the game was published here.
Start of service: January 6, 2016
January
Cinderella's Story Zone (シンデレラの想区)

Little Red Riding Hood's Story Zone (赤ずきんの想区)

Treasure Island's Story Zone (宝島の想区)

Don Quixote's Story Zone (ドン・キホーテの想区)

The Snow Queen's Story Zone (雪の女王の想区)

Princess Kiss Effect (プリンスキッス・エフェクト)

Duration: January 31, 2016 15:00 - February 15, 2016 14:59
Aladdin's Story Zone (アラジンの想区)

February
Swords That Are Swung Down (振り下ろされる双刀)

Boss: Twin Sword Demon
Duration: February 1, 2016 15:00 - February 7, 2016 23:59
That One The Hollow Guardian Seeks (虚ろなる守護者の求めしもの)

Boss: Hollow Guardian
Duration: February 4, 2016 15:00 - February 7, 2016 23:59
The protagonists fall into a dying area called "Hollow Story Zone" where it's Story Teller inexplicably disappeared. In order to get out of there, they challenge the Hollow Guardian, the ghost of this area.
4 Million Downloads Commemoration (400万DL記念)

Duration: February 8, 2016 15:00 - February 12, 2016 14:59
Momotaro's Story Zone (桃太郎の想区)

Release Date: February 15, 2016 15:00
Dango of Hapiness (しあわせの団子)

Duration: January 15, 2016 15:00 - February 22, 2016 14:59
Silver-winged Bird of Prey (銀翼の猛禽)

Boss: Lady Hawk
Duration: February 15, 2016 15:00 - February 29, 2016 23:59
The Legend of the Match Hero - Episode 0 (マッチの勇者伝説・エピソード0)

Duration:: February 29, 2016 15:00 - March 14, 2016 14:59
Roar of the Frozen Flame (凍てつく炎の咆哮)

Boss: Blue Flame Dragon
Duration: February 29, 2016 15:00 - March 14, 2016 14:59
Jeanne's Story Zone (ジャンヌの想区)

Release date: February 29, 2016 15:00
March
(欲望の翼・不死鳥偽伝)

Boss: Phoenix
Duration: March 10, 2016 15:00 - March 27, 2016 23:59
White Shield that Defies Destiny (運命に抗う白き盾)

Featured Main Character: Adah
Duration: March 14, 2016 15:00 - June 13, 2016 14:59
Maid Cat Report (メイドキャット・リポート)

Duration: March 14, 2016 15:00 - April 18, 2016 14:59
Iron Mace that Crushes the Earth (大地を砕く鉄槌)

Boss: Bullhead
Duration: March 14, 2016 15:00 - April 18, 2016 23:59
(霊界の秘術師)

Boss: Wise Sorcerer
Duration: March 28, 2016 15:00 - April 18, 2016 23:59
Puss in Bots VS Phantom (靴をはいた猫VSファントム)

Duration: March 31, 2016 15:00 - May 2, 2016 14:59
April
Alice in Wonderland's Story Zone (不思議の国のアリス)

Release date: April 18, 2016 15:00
(霊界の秘術師)

Boss: Twin Sword Demon
Duration: April 20, 2016 15:00 - April 25, 2016 23:59
Dark Mistress of Glass Slippers (ガラスの靴の黒女帝)

Boss: Chaos Cinderella
Duration: April 25, 2016 15:00 - May 9, 2016 14:59
May
Great Alice Cup (グレート・アリス・カップ)

Duration: May 2, 2016 15:00 - May 31, 2016 14:59
(親愛と希望のプランタン)

Duration: May 16, 2016 15:00 - June 30, 2016 14:59
Through the Looking-Glass' Story Zone (不思議の国のアリス)

Release date: May 16, 2016 15:00
(盤上のサードキング)

Duration: May 16, 2016 15:00 - June 13, 2016 14:59
Little Red Riding Hood, Go Home (赤ずきん、ゴーホーム)

Boss: Chaos Little Red Riding Hood
Duration: May 23, 2016 15:00 - June 6, 2016 14:59
Kai-Ri-Sei Million Arthur (想区性ミリオンアーサー)

Duration: May 31, 2016 15:00 - June 13, 2016 14:59
This event's cutscenes are not available in the offline version.
June
(西遊記外伝・呉越同舟)

Duration: June 13, 2016 15:00 - July 18, 2016 14:59
Journey to the West's Story Zone (西遊記)

Release date: June 13, 2016 around 5:00
(臆病者の桃太郎)

Boss: Chaos Momotaro
Duration: June 20, 2016 15:00 - July 4, 2016 14:59
(親愛と希望のプランタン)

Duration: June 26, 2016 15:00 - July 8, 2016 14:59
Splendid Poisonous Needle (絢爛たる毒針)

Boss: Queen Viola
Duration: June 27, 2016 15:00 - July 11, 2016 14:59
(高らかに奏でよ『レクイエム』)

Duration: June 30, 2016 15:00 - July 31, 2016 14:59
July
Ai x Uta X Grimms Notes (アイウタ×グリムノーツ)

Duration: July 11, 2016 15:00 - July 25, 2016 14:59
This event's cutscenes are not available in the offline version.
(オズの思いがけぬ再会)

Duration: July 18, 2016 15:00 - August 15, 2016 14:59
The Wizard of Oz's Story Zone (オズの魔法使い)

Release date: July 18, 2016 15:00
(アラジンはランプに願う)

Boss: Chaos Aladdin
Duration: July 25, 2016 15:00 - August 1, 2016 14:59
August
(きらめく渚のミステリー)

Duration: August 1, 2016 15:00 - August 31, 2016 14:59
Reason to Climb a Big Tree (大木に登る理由)

Featured Hero: Jack (Sky)
Boss: Sky Giant
Duration: August 1, 2016 15:00 - August 15, 2016 14:59
The Witch Who Leapt Through Time (時をかける魔女たち)

Duration: August 8, 2016 15:00 - September 12, 2016 14:59
(妖精たちのからさわぎ)

Duration: August 15, 2016 15:00 - September 9, 2016 14:59
Midsummer Night's Dream's Story Zone (夏の夜の夢の想区)

Release date: August 15, 2016 - 15:00
(暴走の正義ドン・キホーテ)

Boss: Chaos Don Quixote
Duration: August 22, 2016 15:00 - August 29, 2016 14:59
Loyalty of Steel (鋼の忠誠)

Featured Hero: Heinrich (Sky)
Boss: Frog Prince
Duration: August 31, 2016 15:00 - September 14, 2016 14:59
(恋の華咲く平安京)

Duration: August 31, 2016 15:00 - September 30, 2016 14:59
September
Gakken Mu x Grimms Notes (月刊ムー×グリムノーツ)

Duration: September 09, 2016 15:00 - September 23, 2016 14:59
This event's cutscenes are not available in the offline version.
Carrier of Disaster (災いの運び手)

Duration: September 12, 2016 15:00 - October 31, 2016 14:59
Crooked Pirate (ひねくれものの海賊)

Boss: Chaos Jim
Duration: September 19, 2016 15:00 - September 30, 2016 14:59
(白と黒のグランフェッテ)

Featured Hero: Odette Odile (Sky)
Boss: Demon Rothbart
Duration: September 30, 2016 15:00 - October 14, 2016 14:59
(恋の華咲く平安京)

Duration: September 30, 2016 15:00 - October 31, 2016 14:59
October
Bluebeard's Story Zone (青髭の想区)

Release date: October 17, 2016 15:00
(断罪の魔女ジャンヌ)

Boss: Chaos Jeanne
Duration: October 17, 2017 15:00 - October 31, 2017 14:59
(なかよし双子の大ゲンカ)

Duration: October 31, 2016 15:00 - November 30, 2016 14:59
(永遠を知らぬ少年)

Featured Hero: Kai (Sky)
Boss: Mirror Devil
Duration: October 31, 2016 15:00 - November 14, 2016 14:59
November
(雪原に舞う愛の花)

Boss: Chaos Gerda
Duration: November 14, 2016 15:00 - November 8, 2016 14:59
(アップル・ファタールの遺産)

Duration: November 30, 2016 15:00 - December 30, 2016 14:59
(吸血姫の聖恋歌)

Featured Hero: Carmilla (Sky)
Boss: Countess
Duration: November 30, 2016 15:00 - December 14, 2017 14:59
December
(全ての支配を望むもの)

Boss: Chaos Dorothy
Duration: December 9, 2016 15:00 - December 30, 2016 14:59
Snow White's Story Zone (白雪姫の想区)

Release date: December 19, 2016 15:00
(混沌戦争)

Duration: December 30, 2016 15:00 - January 31, 2017 14:59
(亜麻色の髪の弟子)

Featured Hero: Rapunzel (Sky)
Boss: Witch Gothel
Duration: December 30, 2016 15:00 - January 13, 2017 14:59
January
(新春コッコまつり)

Bosses: Mega Cocco, Mega Cocco Hyper
Duration: January 9, 2017 15:00 - January 16, 2017 14:59
(天に仇なす大猿王)

Boss: Chaos Son Goku
Duration: January 16, 2017 15:00 - January 31, 2017 14:59
Grimm 1st Anniversary (グリム・1stアニバーサリー)

Duration: January 23, 2017 15:00 - February 28, 2017 14:59
Cross World (クロス・ワールド)

Duration: January 31, 2017 15:00 - February 28, 2017 14:59
(天の頂でラァァブを叫ぶ)

Featured Hero: Joringer (Sky)
Boss: Witch Jorinde
Duration: January 31, 2017 15:00 - February 14, 2017 14:59
February
(獣戦士タイガー)

Bosses: Burn Tiger, Marine Tiger
Duration: February 6, 2017 15:00 - February 14, 2017 14:59
Alice in Lazyland (怠惰の国のアリス)

Boss: Chaos Alice
Duration: February 13, 2017 15:00 - February 27, 2017 14:59
Romeo and Juliet's Story Zone (アーサー王の想区)

Release date: February 13, 2017 15:00
Spring Has Come (スプリング・ハズ・カム)

Duration: February 28, 2017 15:00 - March 31, 2017 14:59
(雷光騎士の罪と罰)

Featured Hero: Charlotte Barklight (Sky)
Boss: Raisei
Duration: February 28, 2017 15:00 - March 14, 2017 14:59
March
(氷と炎のファンタジア 完結編)

Duration: March 13, 2016 15:00 - April 30, 2016 14:59
(湖上にて妖精王は吠く)

Boss: Chaos Oberon
Duration: March 13, 2017 15:00 - March 27, 2017 14:59
Akashic Re:cords x Grimms Notes (アカシックリコード×グリムノーツ)

Duration: March 17, 2017 post-maintenance - May 1, 2017 14:59
This event's cutscenes are not available in the offline version.
(混沌事変)

Duration: March 31, 2017 15:00 - June 12, 2017 14:59
(シャーウッドの風、ふたたび)

Featured Hero: Robin Hood (Sky)
Boss: King Lackland
Duration: March 31, 2017 15:00 - April 14, 2017 14:59
April
Otogizoushi's Story Zone (御伽草子の想区)

Release date: April 17, 2017 15:00
(悪党どもの夢の後)

Boss: Chaos Bluebeard
Duration: April 17, 2017 15:00 - May 1, 2017 14:59
(我が船長、最後の挨拶)

Featured Hero: John Silver (Sky)
Boss: Captain Flint
Duration: April 27, 2017 15:00 - May 12, 2017 14:59
May
(鬼の瞳の涙)

Duration: May 8, 2017 15:00 - May 31, 2017 14:59
(機械仕掛けの天泳魚)

Bosses: Koimodoki, Koimodoki Platinum
Duration: May 8, 2017 15:00 - May 15, 2017 14:59
Clever Morgiana's Day Off (かしこいモルジアナの休日)

Featured Hero: Morgiana (Sky)
Boss: Thieves' Leader Kodjia
Duration: May 31, 2017 15:00 - June 14, 2017 14:59
June
One Thousand and One Nights' Story Zone (千夜一夜物語の想区)

Release Date: June 12, 2017 15:00
(この希望こそ愛の奇跡)

Boss: Chaos Juliet
Duration: June 12, 2017 15:00 - June 26, 2017 14:59
Battle of Princess (バトル・オブ・プリンセス)

Duration: June 30, 2017 15:00 - July 31, 2017 14:59
One Saint and Two Knights (大木に登る理由)

Featured Hero: Dulcinea (Sky)
Boss: Knight of the Silver Moon
Duration: June 30, 2017 15:00 - July 14, 2017 14:59
July
Sacred Guardian Beast Rhinos (守護聖獣ライノス)

Bosses: Armed Rhinos, Iced Rhinos
Duration: July 10, 2017 15:00 - July 18, 2017 14:59
(望まざるいばらの棘)

Duration: July 17, 2017 15:00 - August 14, 2017 14:59
(灰まみれの平和)

Boss: Chaos Ignis
Duration: July 17, 2017 15:00 - July 31, 2017 14:59
(灰の少女とガラスの騎士)

Duration: July 24, 2017 15:00 - August 21, 2017 14:59
(夏の魔物にご用心)

Duration: July 31, 2017 post-maintenance - August 31, 2017 14:59
(夫婦仲とは成長の遅い木の如し)

Featured Hero: Oberon (Sky)
Boss: Theseus
Duration: July 31, 2017 15:00 - August 14, 2017 14:59
August
(怒れる娘と憂う母)

Featured Hero: Tatiana (Sky)
Boss: Alexandra
Duration: August 31, 2017 15:00 - September 14, 2017 14:59
September
Mahoujin Guru Guru x Grimms Notes (魔法陣グルグル×グリムノーツ)

Duration: September 11, 2017 15:00 - September 25, 2017 14:59
This event's cutscenes are not available in the offline version.
(赤い瞳の泣き虫ウサギ)

Boss: Chaos Clock Rabbit
Duration: September 11, 2017 15:00 - September 25, 2017 14:59
One Thousand and One Nights of War Clouds (戦雲の千夜一夜)

Boss: Chaos Badour
Duration: September 30, 2017 15:00 - October 14, 2017 14:59
October
King Arthur's Story Zone (アーサー王の想区)

Release date: October 16, 2017 15:00
(毒林檎はもういらない)

Featured Hero: Snow White (Rebirth)
Boss: Shadow Apple Queen
Duration: October 20, 2017 post-maintenance - November 7, 2017 04:00
SINoALICE x Grimms Notes (シノアリス×グリムノーツ)

Duration: October 30, 2017 15:00 - November 30, 2017 14:59
This event's cutscenes are not available in the offline version.
November
(汝、仮面に魅入られし者よ)

Duration: November 13, 2017 post-maintenance - December 31, 2017 14:59
(白と紅のブーケ)

Featured Hero: Rose White (Rebirth)
Boss: Shadow Rose Red
Duration: November 13, 2017 15:00 - November 30, 2018 14:59
Moon Rabbit Battle (月兎合戦)

Bosses: White Moon Rabbit, Black Moon Rabbit
Duration: November 20, 2017 15:00 - November 27, 2017 14:59
(ワルプルギスに魔女は踊る)

Duration: November 30, 2017 15:00 - December 22, 2017 14:59
December
(王の夢、めざめの刻)

Boss: Chaos Arthur
Duration: December 4, 2017 15:00 - December 18, 2018 14:59
All Creation's Story Zone (万象の想区)

Release date: December 11, 2017 15:00
(運命に立ち向かう君へ)

Boss: Chaos Jack
Duration: December 31, 2017 15:00 - January 15, 2018 14:59
(想区ボスの逆襲)

Bosses: Heartless Queen, Oz, Chaos Dante, Kuzuoha, Chaos Galahad, Machina Prince
Duration: December 31, 2017 15:00 - January 8, 2018 14:59
January
Yurisha and 25 Formidable Foes (ユリーシャと25人の強敵)

Featured Hero: Witch Yurisha
Bosses: Sky Giant, Kodjia, Mirror Devil, Bandersnatch, Knight of the Silver Moon, Fake Frog Prince, Demon Rothbart, Witch Gothel, Lost Epitaph, Theseus, Chaos Gerda, Chaos Cagliostro, Chaos Alice, Chaos Clock Rabbit, King Lackland, Chaos Snow White, Antonio Salieri, Countess, Chaos Oberon, Raisei, Captain Flint, Alexandra, Moth Baron, Ruin Dragon
Duration: January 15, 2018 15:00 - Jaunary 28, 2018 23:59
A-un's Roar (阿吽の咆哮)

Bosses: Komainu Ungyou, Shishi Agyou
Duration: January 22, 2018 15:00 - January 28, 2017 23:59
January 29: Grimms Notes Repage is launched
(邪悪なる洞穴)

Bosses: Marine Tige, Wailing Banshee, Earthbound Emperor, Yeit (Volcano), Koimodoki, Alraune, Lost Epitaph ()
Duration: January 29, 2018 post-maintenance - February 5, 2018 14:59
Little Mermaid's Story Zone (人魚姫の想区)

Release date: January 29, 2018 post-maintenance
February
(賛美歌が響くあの街へ)

Featured Hero: Gerda (Rebirth)
Boss: Shadow Kai
Duration: February 18, 2018 15:00 - February 28, 2018 14:59
The Beauty and the Beast's Story Zone (眠れる森の美女)

Release date: February 12, 2018 15:00
(闇に浮かびし悲愛の幻影)

Boss: Chaos Mermaid
Duration: February 15, 2018 15:00 - February 19, 2018 14:59
(語られぬ英雄たちの軌跡)

Bosses: Chaos Godmother, Little Red Wolf, Dragon Pirate John Silver, Windmill Giant, Merciless Snow Queen, Emperor / Lamp Spirit, Two-Headed Giant Oni, Infernal Demon Priest, Hearthless Queen, Jabberwock, Bull Demon King, Oz, Chaos Titania, François Prelati, Machina Prince, Chaos Dante, Kuzunoha, Chaos Dunyazad, Candy Witch, Chaos Galahad
Duration: February 28, 2018 15:00 - March 14, 2018 23:59
(レイナ・フィーマンの置き土産)

Duration: February 28, 2018 15:00 - March 31, 2018 14:59
March
French Revolution's Story Zone (フランス革命の想区)

Release date: March 12, 2018 15:00
(ラム酒に思いを託して)

Featured Hero: Jim Hawkins (Rebirth)
Boss: Shadow John Silver
Duration: March 12, 2018 15:00 - March 31, 2018 14:59
(プリンセス頂上決戦)

Duration: March 31, 2018 15:00 - April 30, 2018 14:59
(ある獣の末路)

Boss: Chaos Belle
Duration: March 31, 2018 15:00 - April 16, 2018 14:59
April
Sleeping Beauty's Story Zone (眠れる森の美女)

Release date: April 6, 2018 15:00
(光と影の輻輳)

Featured Hero: Odile (Rebirth)
Boss: Shadow Odette
Duration: April 16, 2018 15:00 - April 30, 2018 14:59
Mutant Wars (ミュータント・ウォーズ)

Bosses: Death Plant, Soldier Gorilla, Rubberman, Alraune, Burn Tiger, Iced Rhinos, Crimson Gargoyle
Duration: April 23, 2018 15:00 - April 30, 2019 14:59
The End of the Days of Old (古き日の終わり)

Boss: Chaos Marie
Duration: April 30, 2018 15:00 - May 15, 2018 14:59
May
(混沌浪漫)

Duration: May 7, 2018 15:00 - May 31, 2018 14:59
(魔女は無慈悲な時空の女王)

Featured Hero: April (Rebirth)
Boss: Shadow Sherry
Duration: May 15, 2018 15:00 - May 31, 2018 14:59
(カオス・ガラハッドの策謀)

Bosses: Chaos Godmother/Chaos Cinderella, Little Red Wolf/Chaos Red Riding Hood, Dragon Pirate John Silver/Chaos Jim, Chaos Kintaro/Chaos Momotaro, Bull Demon King/Chaos Son Goku, Chaos Aladdin/Chaos Badour, Chaos Jeanne/Chaos Bluebeard, Candy Witch/Chaos Gretel, Chaos Prince/Chaos Mermaid, Chaos Oberon/Chaos Titania, Chaos Alice/Chaos Clock Rabbit, Chaos Galahad/Chaos Arthur
Duration: January 15, 2018 15:00 - Jaunary 28, 2018 23:59
(重なる思いのその先に)

Duration: May 31, 2018 15:00 - June 25, 2018 14:59
Embracing the Light and Shadow (光と影を抱きしめて)

Boss: Chaos Aurora
Duration: May 31, 2018 15:00 - June 18, 2018 14:59
June
(プリンセスと灰色の魔女)

Featured Hero: Cinderella (Rebirth)
Boss: Shadow Godmother
Duration: June 18, 2018 15:00 - July 2, 2018 14:59
Pinocchio's Story Zone (ピノキオの想区)

Release date: June 18, 2018 15:00
Naked Love (ネイキッド・ラブ)

Duration: June 25, 2018 15:00 - July 31, 2018 14:59
Force of Mythology (フォース・オブ・ミソロジー)

Bosses: Griffon, Botanical Robo, Crystal Genie (Purple Lightning), Raisei, Ruin Dragon, Theseus, Sky Giant
Duration: June 25, 2018 15:00 - July 2, 2018 14:59
July
(怪盗キャットにご用心!)

Boss: Chaos Puss in Boots
Duration: July 9, 2018 15:00 - July 23, 2018 14:59
Alice's Story Zone (アリスの想区)

Release date: June 18, 2018 15:00
(追憶のボスラッシュ)

Bosses: Little Red Wofl, Windmill Giant, Chaos Titania, Chaos Dante, Kuzunoha, Morrigan
Duration: September 21, 2018 15:00 - September 24, 2018 14:59
A one day-only event held for a live broadcast where players would be able to play with the game's developers. It features a number of pre-Repage bosses.
(戦火よりも紅き薔薇)

Featured Hero: Belle (Rebirth)
Boss: Shadow Bete
Duration: July 23, 2018 15:00 - August 7, 2018 14:59
(夏の日の思い出)

Duration: July 31, 2018 15:00 - August 31, 2018 14:59
August
(からくり人形の瞳のその奥)

Boss: Chaos Pinocchio
Duration: August 6, 2018 15:00 - August 20, 2018 14:59
VP Lenneth x Grimms Notes (VPレナス×グリムノーツ)

Duration: August 10, 2018 15:00 - August 27, 2018 14:59
This event's cutscenes are not available in the offline version.
(記述されざる我が武勲)

Featured Hero: Frog Prince (Rebirth)
Boss: Shadow Heinrich
Duration: August 20, 2018 15:00 - September 3, 2018 14:59
(女帝と、魔法使い!?)

Boss: Chaos Queen of Hearts
Duration: August 31, 2018 15:00 - September 14, 2018 14:59
September
Andersen's Fairy Tales' Story Zone (アンデルセン童話の想区)

Release date: September 14, 2018 15:00
(追憶のボスラッシュ)

Bosses: Moth Baron, Burn Tiger, Werebat, Chaos Jim, Alexandra, Chaos Cagliostro, Kodjia
Duration: September 21, 2018 15:00 - September 28, 2018 14:59
(乙女は吸血姫に恋をする)

Featured Hero: Savin (Rebirth)
Boss: Shadow Carmilla
Duration: September 24, 2018 15:00 - October 4, 2018 14:59
October
Dance! Halloween Night (踊る!ハロウィンナイト)

Boss: Chaos Karen
Duration: October 5, 2018 15:00 - October 19, 2018 14:59
Two Sanctuaries (二つのサンクチュアリ)

Bosses (Sacred Beast's Sanctuary): Koimodoki Platinum, White Moon Rabbit, Armed Rhinos FO
Bosses (Holy Man's Sanctuary): Noir, Witch Jorinde, Chaos Therese FO
Duration: October 15, 2018 post-maintenance - October 22, 2018 14:59
(通りすがりの転校生・前編)

Release date: October 17, 2018 15:00
(強敵に捧ぐ月見酒)

Featured Hero: Kintaro (Rebirth)
Boss: Shadow Shuten-douji
Duration: October 22, 2018 15:00 - November 5, 2018 14:59
(在りし日の灯火)

Boss: Chaos Little Match Girl
Duration: October 31, 2018 15:00 - November 14, 2018 14:59
November
(恋ふらくを人の知らなく)

Featured Hero: Alibaba (Rebirth)
Boss: Shadow Morgiana
Duration: November 16, 2018 15:00 - November 30, 2019 14:59
Grimms Echoes x Grimms Notes (グリムエコーズxグリムノーツ)

Release Date: November 19, 2018 15:00
(聖なる夜の、小さな奇跡 前編)

Duration: November 30, 2018 15:00 - December 21, 2018 14:59
December
(聖なる夜の、小さな奇跡 後編)

Duration: December 10, 2018 post-maintenance - December 21, 2018 14:59
Frankenstein' Story Zone (フランケンシュタインの想区)

Release date: December 17, 2018 15:00
(お茶会の懲りない面々)

Featured Hero: March Hare (Rebirth)
Boss: Shadow Hatter
Duration: December 28, 2018 15:00 - January 18, 2019 14:59
(通りすがりの転校生・後編)

Release date: December 31, 2018 15:00
January
(お茶会の懲りない面々 -追憶-)

Boss: Shadow Hatter
Duration: January 7, 2019 15:00 - January 18, 2019 14:59
Viehmann's Story Zone (フィーマンの想区)

Release date: January 21, 2019 15:00
(赤ずきんちゃんの届け物 前編)

Featured Hero: Little Red Riding Hood (Anime Ver.)
Duration: January 31, 2019 15:00 - February 18, 2019 14:59
February
(赤ずきんちゃんの届け物 後編)

Duration: February 8, 2019 15:00 - February 18, 2019 14:59
Nightmare Is Coming (ナイトメア・イズ・カミング)

Bosses: Evil Spirit Emperor, Banshee, Mirror Devil, Countess, Shadow Carmilla, Reaper FO
Duration: February 18, 2019 15:00 - February 28, 2019 14:59
(止まらない真夏の青春群像)

Release date: February 18, 2019 15:00
(混沌楽園)

Duration: February 28, 2019 15:00 - March 18, 2019 14:59
(還らざる月華の夢)

Featured Hero: Kaguyahime (Rebirth)
Boss: Shadow Hagoromo Tennyo
Duration: February 28, 2019 15:00 - March 22, 2019 14:59
March
(還らざる月華の夢 -追憶-)

Boss: Shadow Hagoromo Tennyo
Duration: March 11, 2019 15:00 - March 22, 2019 14:59
(追憶のボスラッシュ)

Bosses: Little Red Wolf, Windmill Giant, Chaos Godmother, Dragon Pirate John Silver, Ruthless Snow Queen, Two-headed Giant Oni, Emperor, Lamp Spirit
Duration: March 12, 2019 15:00 - March 13, 2019 14:59
Another one day-only event held for a live broadcast where players would be able to play with the game's developers. This event features all the Chaos Tellers from the Animated Adaptation, and the order they are fought is based on their order of appearance for each episode.
Prometheus's Story Zone (プロメテウスの想区)

Release date: March 18, 2019 15:00
Dorothea's Trial Part 1 (ドロテアの試練 前編)

Duration: March 31, 2019 15:00 - April 15, 2019 14:59
April
Dorothea's Trial Part 2 (ドロテアの試練 後編)

Duration: April 8, 2019 15:00 - April 15, 2019 14:59
The Summit of the Sky (天空の頂)

Bosses: Sky Giant, King Lackland, Witch Gothel, Alexandra
Duration: April 15, 2019 15:00 - April 22, 2019 14:59
Fortem' Story Zone (フォルテムの想区)

Release date: April 15, 2020 15:00
High Voltage (ハイボルテージ)

Bosses: Wise Sorcerer, Raisei, Lira's Essence, Thunder Emperor Voltam, Chaos Aurora, Chaos Pinocchio, Todoroki Raisei
Duration: April 22, 2019 15:00 - April 30, 2019 14:59
(破戒法師、見参!)

Featured Hero: Sanzou Houshi (Rebirth)
Boss: Shadow Son Goku
Duration: April 30, 2019 15:00 - May 20, 2019 14:59
(破戒法師、見参!-追憶-)

Boss: Shadow Son Goku
Duration: May 10, 2019 15:00 - May 20, 2019 14:59
May
(闇の奥の混沌)

Duration: May 7, 2019 15:00 - May 20, 2019 14:59
(時計塔学園殺人事件?)

Release date: May 20, 2019 15:00
(七人の悪魔科学者編 前編)

Duration: May 31, 2019 15:00 - June 24, 2019 14:59
June
(七人の悪魔科学者編 後編)

Duration: June 14, 2019 15:00 - June 24, 2019 14:59
Chivalric Romance's Story Zone (騎士道物語の想区)

Release date: June 14, 2019 15:00
(寂しがりの猫は空を飛ぶ)

Featured Hero: Alice (Rebirth)
Boss: Shadow Dinah
Duration: June 28, 2019 15:00 - July 16, 2019 14:59
(その轍が交わる時)

Duration: June 30, 2019 15:00 - July 15, 2019 14:59
July
(寂しがりの猫は空を飛ぶ -追憶-)

Boss: Shadow Dinah
Duration: July 8, 2019 15:00 - July 16, 2019 14:59
Snow Ashes's Story Zone (フィーマンの想区)

Release date: July 15, 2019 15:00
(太陽と海と臨海学校 前編)

Duration: July 31, 2019 15:00 - August 26, 2019 14:59
August
(太陽と海と臨海学校 後編)

Duration: August 9, 2019 15:00 - August 26, 2019 14:59
(そして家族になる)

Featured Hero: Flambeau (Rebirth)
Boss: Shadow Dorlotto
Duration: August 31, 2020 post-maintenance - September 17, 2020 14:59
(迷彩と謀略の混淆)

Duration: August 31, 2019 post-maintenance - September 17, 2019 14:59
September
The Summit of the Beasts (天空の頂)

Bosses: Lady Hawk, Rose Beast, Griffon, King Lackland
Duration: September 17, 2019 15:00 - September 23, 2019 14:59
(四季と学園の終わり・前編)

Release date: September 17, 2019 15:00
(そして家族になる -追憶-)

Boss: Shadow Dorlotto
Duration: September 19, 2020 15:00 - September 17, 2020 14:59
October
Halloween Memories Part 1 (ハロウィン・メモリーズ 前編)

Duration: October 1, 2019 15:00 - October 21 2019 14:59
Halloween Memories Part 2 (ハロウィン・メモリーズ 後編)

Duration: October 7, 2019 15:00 - October 21, 2019 14:59
Aesop's Fables' Story Zone (イソップ童話の想区)

Release date: October 14, 2019 15:00
(自由への旅路)

Duration: October 31, 2019 15:00 - November 11, 2019 14:59
(愛し愛されること)

Featured Hero: Amadeus Mozart (Rebirth)
Boss: Shadow Chopin
Duration: October 31, 2019 15:00 - November 18, 2019 14:59
November
(愛し愛されること -追憶-)

Boss: Shadow Chopin
Duration: November 11, 2019 15:00 - November 18, 2019 14:59
(四季と学園の終わり・後編)

Release date: November 11, 2019 15:00
(過ぎ去りし者達に花束を 前編)

Duration: November 30, 2019 15:00 - December 20, 2019 14:59
December
(過ぎ去りし者達に花束を 後編)

Duration: December 9, 2019 15:00 - December 20, 2019 14:59
Grimms Notes' Story Zone (グリムノーツの想区)

Release date: December 9, 2020 15:00
(優しさの瞬く聖夜)

Duration: December 16, 2019 15:00 - December 27, 2019 14:59
Machina Battle (ナイトメア・イズ・カミング)

Bosses: Machina Prince, Chaos Pinocchio, Chaos Dorlotto, Koimodoki, Platinum Koimodoki, Mecha Paracelsus, Mecha Paracelsus Reform, Desert Robo, Botanical Robo
Duration: February 18, 2019 15:00 - February 28, 2019 14:59
(君と再逢した迎春)

Duration: December 27, 2019 15:00 - January 13, 2020 14:59
(干支めぐりスタンプラリー)

Bosses: Iced Rhinos, Komainu Ungyou, Mega Cocco Hyper, Shaman Gorilla, Ephemero, Chaos King Midas, Jabberwock, Blue Flame Dragon, White Moon Rabbit, Burn Tiger, Bullhead, Chaos Rattenfanger
Duration: December 30, 2019 15:00 - January 20, 2020 14:59
(未知とは運命の不在なり)

Featured Hero: Clock Rabbit (Echoes)
Boss: Bander Boojum
Duration: December 30, 2019 15:00 - January 20, 2020 14:59
January
(未知とは運命の不在なり -追憶-)

Boss: Bander Boojum
Duration: January 6, 2020 15:00 - January 20, 2020 14:59
Sleeping Wild (スリーピング・ワイルド)

Duration: January 20, 2020 post-maintenance - February 3, 2020 14:59
(獣たちの番だ! 前編)

Duration: January 31, 2020 15:00 - February 17, 2020 14:59
February
(空騒ぎのバレンタイン)

Duration: February 7, 2020 15:00 - February 21, 2020 14:59
(獣たちの番だ! 後編)

Duration: February 10, 2020 15:00 - February 17, 2020 14:59
The Final World - Part 1 (終局の世界・前編)

Release date: February 10, 2020 15:00
March
The Final World - Part 2 (終局の世界・後編)

Release date: March 9, 2020 15:00
End of service: June 17, 2020
The game is reworked into an free offline version. The battle system is removed, but all the quests' dialogues, including events and one-time only cutscenes, can be viewed from the start whenever you want. The game is essentialy now a free and extensive Visual Novel.- Available stuff: Hero Episodes, special weapons' descriptions, all Heroes' profiles and illustrations, voices (except in-battle lines), costumes, and the possibility to change the home background image (though not every image is available).
- Missing stuff: Battles, battle themes, achievements, the Miniature Kingdom, enemies' sprites, normal weapons + descriptions, and crossover stories (except the one with Bravely Default characters). NPCs' full illustrations also can't be viewed normally, nor selectable for the home screen.
- Red Riding Hood\'s Forest (赤ずきんの森)
- Don Quixote\'s Faith (ドン・キホーテの信念)
- Cinderella of Recollection (追憶のシンデレラ))
- Ex\'s Journey Begins (エクスの旅立ち)
- Treasure Island, a Place of dreams and adventure (夢とロマンの宝島)
- Ex and Snow White (エクスと白雪姫)
- Gerda and the Snow Queen (ゲルダと雪の女王)
- The Brother and Sister of Onigashima (鬼ヶ島の兄妹)
- Aladdin of the burning sand (熱砂のアラジン)
- The Maid of Orleans (オルレアンの聖女)
- Reina in Wonderland (不思議の国のレイナ)
- A Fairy tale nobody knows (誰も知らない童話)