Limited-time events. While many of them are meaningless, silly fun, there are number of story-critical "Main Interlude" chapters which are bolded here and also included on their respective main story Recap pages.
Observer on Timeless Temple Events:
- Nero Fest ~The Colosseum of Victory~
- Do Moon Goddesses Dream of Dumplings?
- Adventure of Singing Pumpkin Castle ~Mad Party 2015~
- GUDAGUDA Honnouji
- Christmas 2015 - Almost Weekly Santa Alter-san
- Saber Wars
- Valentine 2016 and 2017 - Chocolate Lady's Ruckus
- The Garden of Order
- Cries of the Vengeful Demon in the Prison Tower
- Da Vinci and the 7 Counterfeit Heroic Spirits
- Fate/Accel Zero Order
- Restless Drunk Demons Capital - Rashomon
- Starry Xuanzang Goes to India
- Tenma's Marvelous Folklore - Onigashima
- Summer 2016 - Chaldea Summer Memory / Chaldea Summer Odyssey
- A Magical Girl's Travelogue ~Prisma Corps~
- Halloween 2016 - Halloween Comeback! Extremely Large Pumpkin Village and the Adventure
- Christmas 2016 - Second Alter-chan
Epic of Remnant Events:
- GUDAGUDA Meiji Revival
- BB Strikes Back: Let's meet in the digital sea!
- All the Statesmen! ~Learn With Manga Records of the American Frontier~
- Summer 2017 - Dead Heat Summer Race! Death Jail Summer Escape!
- Halloween 2017 - Halloween Strike! Devil's Building Climber: Great Decisive Battle at Himeji Castle
- Christmas 2017 - Merry Christmas in the Underworld
Cosmos in the Lostbelt Events:
- Setsubun Banquet Scroll - Hundred-Level Pagoda of Oni Nirvana
- Valentine 2018 - Prosperous Chocolate Gardens of Valentine
- Apocrypha - Inheritance of Glory
- Murder at the Kogetsukan
- GUDAGUDA Strange Tales of the Imperial Holy Grail ~ Far East Devil Battlefront 1945
- Serva★Fes 2018 - Servant Summer Festival!
- Battle in New York 2018
- Halloween 2018 - Mysterious Country of ONILAND ~Demon Ruler and the Golden Kamuy~
- Christmas 2018 Holy Samba Night: Snowing Ruins and the Maiden Knight
- New Year Event 2019 - Sparrow's Inn Activity Log: Chronicles of the Prospering Enma-Tei
- Valentine 2019: Voice & Letter Collection ~Murasaki Shikibu and the 7 Cursed Books~
- The Old Spider Weaves Its Web
- Tokugawa Restoration Labyrinth: Ooku
- April Fools 2019: Fate/Grand Order Quest
- Lady Reines' Case Files
- A Meihousou Most Foul
- Learn with Manga! F/GO Vol 2 Release Commemoration Campaign
- Destroy All Nobunagas: GUDAGUDA Final Honnōji 2019
- Summer 2019: All In! Las Vegas Championship Match ~ Seven Duels of Swordbeauties!
- Battle in New York 2019
- Saber Wars II
- Christmas 2019: Nightingale's Christmas Carole
- Amazoness.com ~CEO Crisis 2020~
- Valentine 2020 Wonderful Valentine ～Murasaki Shikibu and the 5 Party Gals
- Aeaean Spring Breeze ~The Witch, Her Good Companions & A New Adventure
- Fate/Requiem Board Games of the Apocalypse
- Servant Summer Camp! ~Chaldea Thriller Night~
- Martial Dance Party in the Land of Shadows ~Cat, Bunny & Holy Grail War~
- The Great Ancient Shinsengumi Legend GUDAGUDA Yamataikoku 2020
- Great Void Sea Battle: Imaginary Scramble
- The Glorious Santa Claus Road ~The Sealed Christmas Present~
- Say Goodbye to Kamakura ~Little Big Tengu~
- San Valentino ~Chaldea Bitter Valentine 2021~
- Holy Grail Phantom Thief Amakusa Shirō ~Slapstick Museum~
- Akihabara Explosion! ~ The Town of Wishes and The Sculptures of Love
- Bedazzled! Grail Concert! Crane Returns an Idol's Favor
- Chaldea Summer Adventure! ~The Girl Who Dreams and the Boy Who Chases Dreams~
- Halloween Rising! ~The Queen of Dust and the Disciple of Darkness~
- Shōwa Kishin Project GUDAGUDA Ryōma's Close Call! The Mystery of the Vanished Nobbu Head
- Making Christmas Party!
- Non-Primate Ecosphere: Tunguska Sanctuary
- Manannán Souvenir Valentine ~The Chocolate Tree and The Goddess' Choice~
- Battle in New York 2022 ~Space Odysseus vs. Nikola Tesla
- 15 Bespectacled Intellectuals
- Sea Monster Crisis: Floating Island of Innocents
- Serial Genesis Days: Mississippi Mythicizers
- Holy Grail Front~Moonsault Operation~
- Nanmei Yumihari Hakkenden
- Arctic Summer World ~Chaldea's Midsummer Tour of the Magical Park~
- Overwhelming Tea Ceremony Battle: GUDAGUDA Shin Yamatai-koku -The Man Who Returned from Hell-
- Halloween Rebellion of 108 People ~The Young Dragon and Her Adaptation of Water Margin~
- Chaldea Faerie Knight Cup
- Miss Joan and Unconfirmed Love - Break it Down☆The Great Lovey-Dovey Heart Stone Statue
- Tales of Chaldean Heavy Industries
- Spiralling Testament World - Lilim Harlot ~The Unapplauded Rose~
- Mystic Eyes Symphony
- Serva★Fes 2023 - Servant Summer Festival!
- Wandjina World Tour! ~Globe-Trotting with the Great Spirit~
- Grail Front ~White Castle by Day, Black Castle by Night~
- Full Speed Ahead! Kawanakajima in 24 Hours: GUDAGUDA Super Goryōkaku - The Killer Sign is M51
- Merry Christmas in the Snowy Fields 2023 - 7 Days / 8 Years Snow Carol
- Waxing Moon Clashing Swords Chronicles - Fate/Samurai Remnant Collaboration Event
- Valentine 2024 ~Beyond the Chocolate River~
- Charlemagne's Montjoie and Chivalry Day
- Witch After The Holy Night: Murder at the Kumano Hot Springs - The Robin Saw It All! Magicians Die Twice!
