The last Master of Chaldea falls very ill on a day he would go with some Servants on a material farming trip. One week of sick days would be much needed for a Master who works tirelessly to ensure the survival of Proper Human History. Things can't possibly go wrong, right?

AU of Apocrypha and FGO. Two years after humanity was to be incinerated, the now-defunct Chaldea's Team A is thrust into a Great Holy Grail War against the magus group known as Yggdmillenia. Throughout the conflict, secrets will be revealed, heroes will fall, and in the end, the world will never be the same.

When the fate of humanity rests in the hands of a girl who does not know when to rest or give herself a break, it is up to the Heroic Spirits she summons to remind her otherwise. (A compilation of Self-Insert oneshots for Fate/Grand Order originally published on Tumblr, roughly following the author's journey through the game's story in relation to Servants summoned in the gacha.)

Meetings are something that most people experience often. They can be either frivolous or life-changing. Or anything in between. But there is a type of meeting that is rarer than any other. The type that has occurred scarcely more than a few times throughout Human History. A meeting between two people that could decide the future of Humanity itself.

A fanfic inspired by FGO, with the story revolving around a Holy Grail War. Ps. I only played the game and know basically nothing about Fate lore so don't shoot me for that. Pls.

A story in an alternate WWII singularity where its mystery still reigns and the mana were unusually dense for its age. It has allowed all those who were beyond 1900 to become heroic spirits as long as their deeds are beyond any comprehension of human beings. And now this is where all those who remains to reach the truth of what happened

Jacob Stone suddenly finds himself in some weird place that's full of monsters and…is that a pink-haired swordswoman? Follow him in his journey to become a true servant, while trying to survive and find his way home, should there be any.

"Master, I love you." How was he supposed to react to a confession like that out of the blue? [Smut]

Thanks to his sister's submission for a job application, Ritsuka was forced to go with Ritsuko to Chaldea to get a work experience for their future before their high school ends. Unknown to them, time had a different installment where fate of humanity is headed towards extinction. And, a destiny to fight for their present and their future. (Reposted from AO3)

In which the Protagonist of Fate/Grand Order is a horny young man fully willing to abuse his position and power for sex. Along the way, he'll gather a massive harem (obviously) and end up saving the world more times than he can count (not so obvious) WARNING: Mature Themes Abound!

Hakuno had just acclimated herself to living in Chaldea, when an incident in Septem leaves her with part of her memories missing, and Command Spells on her left hand. Her new Servant is all too keen to take advantage of her missing memories and turn her world completely off-kilter.

Ikusu Shirayuki, a young man who held the title of Savior of Humanity and Hero of Human Order, has been through with so many challenges to save Humanity and now a new challenge called Lostbelts appeared. Although,The Church called him a heretic while King of Humans called him a 'Devil' due to the fact that he rejects a new world and wants to save his current world and mankind.

Retiring to his room after a night of partying, Ritsuka is joined by the ever-enigmatic Shuten-douji. And contrary to her words, she doesn't just want to escort him back to his room... [Smut]

Doctor Romani has been poisoned will he make it read to find out

What do Servants do between being sent out on missions? Try to live together, which may be the hardest mission of all. At least, if you ask Mash, who still doesn't get a break from work. And while her partner Shirou is supposed to be helping her, somehow, he manages to cause as many problems as he solves.

Oneshot. The process of Arjuna Alter reclaiming his humanity forces Arjuna to examine certain things about himself. Or Arjuna doesn't know how he's supposed to feel watching another version of him cling to the master like some overgrown shoulder cat.

The World Revisions page for Fate/Grand Order: Blessing of the Fortuity Shard.

Taking place during the third summer event, Chaldea is relaxing on vacation in Hawaii. Mash and Nero head to the beach after Nero won a card game against Fem!Ritsuka that allows her the right to order Mash around for the entire afternoon. WARNING: Mature Themes Abound!

Ritsuka Fujimaru is a naturally occurring holy grail in human form. Nobody realizes this until the world goes to hell in a hand's basket. A comedic erotic misadventure. Ritsuka Fujimaru (F) x Nearly Everyone. Co-authored with Erimies

A necessity rises to summon another Lancer, with Cu being his only one. A small travel to the Summoning Room with Cu in tow, what would possibly go wrong? Maybe summoning the one woman that would scare Cu more than Medb, perhaps?

Foreign. A word used to describe strange or unfamiliar things. However, in this world it's used to describe someone from a different dimension outside human comprehension. Seeing how the fate of this world will continue, the No.19 Master will try to change the Grand Order for the better even if it uses such means. (Cover will change later, for now best girl will appear).

A series of one shots involving Fate/Grand Order's wielder of the Harem Protagonist EX skill: Gudao. With a plethora of amazing women from all across history, can Gudao fulfill his duties as the owner of this harem? Unleash the Ladykiller!

Taking a skiing holiday away to Switzerland, Ritsuka and his companion Melusine find themselves getting lost in an unexpected blizzard. Taking refuge from the storm, cold and shivering, Melusine suggests a certain way of warming up - a suggestion Ritsuka goes along with. [Smut]

Shirou pushed himself to move forward even if something compels him he look towards the shining grail and then he took a step once more, ignoring everything And then Emiya Shirou dies. What you see right now is nothing different than a machine it kept moving on forward It was programmed to destroy the grail as the lifeless body swung it's sword and everything was engulf in white

Most of the Lostbelts had been intended to provide something better than normal human history, but this one was fighting for the very right to exist. And as a previous unknown is thrown into the vicious cacophony of war and blood, he will end up fighting for both his right to exist, and to prove his story is worth sharing.