Arjuna won the Holy Grail War for his Master. He was sure that eternal solitude is all he needs, but the Grail, able to uncover one's deepest desires, knew better than that… and interpreted his wish in its own, twisted way.
There are many various gods, to worship or defy. And there's Gilgamesh... Heroic Spirits are supposed to aid and inspire mortals. But of what help a Servant could really be to a man, with whom all the legends of humanity had begun? No matter the reason behind the summoning, one thing is certain - even the King of Heroes should not play with magic he does not fully understand.
Under the purple skies of a distant moon, in the Virat space station, a young assistant mechanic meets a navigator in training from the Hastinapur fleet. But nothing is really like it seems... FGO/Mahabharata space/mecha AU (I know, how it sounds, but couldn't stop myself!).
Shirou was saved from the great fire… by a mad scientist, who wants to turn him into a vessel for his greatest creation. Only a certain incarnated Caster knows what is coming and does everything he can to stop it - even if that includes irreversible damage to the Grail. (also: SOLDIER Shirou is so broken, but his Servant will try to fix it)
"Oh, Master, how wonderful! You have summoned an Ancient Mesopotamian Anti-Thot Cannon!" Indeed. Because the summoning system in Chaldea is full of absurd. (Crack fic.)
AU, future. Magic is controlled by computers. The system allows to summon Servants, but their only purpose is to fight on the Arena for the prestige of the richest families of magi... Until the day when the system suddenly crashes, leaving unaffected only the weakest magus, descendant of a certain nameless hero, and her six Servants. Will they fix the situation and save humankind?
Sakura Zenjou has no magic. This is what she believes, as she turns her back on the world of magi. But the magi world will come to her anyway. A new route, where the Matous still have magic, the 4th War went differently, and Sakura, with her powers sealed by Tokiomi, tries to live as a normal person. (Multiple routes, endings and pairings)
"You disturbed my peace and I demand retribution. A story for the time you've spent here, being a nuisance. A fair exchange, is it not?" Part two of Chaldea Servants interaction one-shot series I promised some time ago. Mostly about snakes and books.
Disappointed by the results of the Fourth Grail War, the Einzberns experimented with a new type of homunculi to summon all Servants by themselves. A failed specimen, his friends and some stubborn Heroic Spirits messed things up, making a certain half god from India a Master... Well, kind of. And then Illya messed things up even further...
Obsessed with the desire to win the Holy Grail War, the Einzbern family collected many relics. When Kiritsugu Emiya summoned his Servant, more than one Heroic Soul answered the call from the castle. This is the alternative, rebellious timeline of the Fourth Holy Grail War, focused mostly on the Einzbern team.