Singularities. Points in Human History which have become corrupted with the presence of a Holy Grail with the end result being the incineration of Humanity. However, it is not the Grails alone which are divergent. The Incineration comes about as one world in particular comes to an end. The two become linked as figures from a different Throne reach across the barriers between worlds

The Fourth Holy Grail War begins at last, but the servants summoned for this particular war prove to be more than what the seven chosen masters can handle. Powerful warriors from an ancient age fuelled by fire, who have endured horrors beyond anyone's imagination. Just what could they possibly want from an omnipotent wish granting artefact? Fate Zero Crossover with Dark Souls.

With a bit of twist and bit of a grind, the Kingpin has put up a story of Saber Alter in the decaying world of Dark Souls, specifically the third game. Connected to the backstory of Logic Paradox, this will explain some events while also following the path she takes in the game's story. Additional crossover elements present, so this does not necessarily follow canon.

A series of events corresponding with those aligned with the Primal Institute of Man. They are holders of Dark Souls, not native to the world, but yet, converge here, and now. Fate/Honkai/Arknights/Girls Frontline/Bleach/Seven Deadly Sins/Dark Souls. Set in Dark Souls 3

The reserve system of the Greater Grail had been activated. Two sides are pit against each other, Red vs Black. However, the 3rd Holy Grail War had never ended officially, with the continued survival of the Ruler servant. An exploit that an external influence used to intervene in the Grail War that would fight for humanity's salvation.

As the First Flame fades and the Undead Curse hangs over the land, seven remarkable individuals are chosen to partake in a battle royal to decide the fate of the world. Partnered with the spirits of legendary heroes, the seven compete for the honour of linking the Fire.

A warrior corrupted by the Abyss finds himself in a new world, his fate tied to a little girl. A telling of the fifth holy grail war, but some of the servants are characters from the Souls/Borne series. This story focuses on Illya and her servant Artorias, summoned as the Berserker, as they fight in the grail war.

Fate/Zero with different servants. Current chapter: Solaire's Bonfire has unintended consequences for the magus next door.

4th Grail War was disastrous enough already, right? Well, what will happen if the Servant selection shuffles into something completely different? See for yourself how Holy Grail War is not just "getting good". Crossover with Demon's Souls, Dark Souls, Dark Souls 2 and Bloodborne. Rated T for violence.

(AU) Adriel Blackmour saved the world from the Darksign but in the end he sacrificed himself to do it. Noticing his Noble action the World called upon him and offered him a place in the Throne of Heroes. The first few chapters will be dedicated to the Hundred Years War, also a Holy Grail War will be going on at the same time. (Adriel x Jeanne d'Arc/Ruler)

The summoning of Heracles had gone awry. Somehow an unknown Heroic Spirit had been summoned in his place. The Einzbern family were not pleased, but Illyasviel would withhold her judgment. This Berserker still seemed capable enough for what she had in mind.

Humanity is on the verge of destruction thanks to a series of singularities caused by legendary figures from different worlds. Now it is up to the Chaldea Security Organization to preserve human history while standing against some of the biggest threats humanity has ever faced. (Soulsborne x Fate/Grand Order crossover)

The Holy Grail Wars haven't been the same since the Soul of Cinder infiltrated the conclusion of the Third Holy Grail War. The Fifth Holy Grail War has just started and now we see just how differently the course of the war will go thanks to the outsider's manipulations from two wars before. (T for now though might become M due to Dark Souls level violence and gore later.)

In a reality where the events of Dark Souls are part of the Fate franchise's ancient history. Our hero, Solaire of Astora, is summoned to fight as the Saber class in the 2nd Holy Grail war! Armed with Jolly Cooperation, our hero faces down history's greatest legends. [Story is the aftermath of Solaire being saved from the sunlight maggot,and fulfilling his destiny to link the fire]

Legends appear across all time, so long as humans are there to tell them. But when legends are summoned from times mankind has forgotten, their fate lies in their battles. Will the flame be fueled once again? Or will the black soul of humanity find an unlikely guardian? Rated T for content.

The Chosen Undead sacrificed himself to rekindle the First Flame. Shirou Emiya was born in the Flames of Fuyuki Fire. You can see where i'm going right?. No? Read to find out. AR and a little bit OOC

"He is efficient. He is Brutal. He is an unstoppable force, clad in steel and fire... For he is undying. He is Shirou." -Excerpt from 'The Lives and Times of Kaleido Shirou Schweinorg

Oneshot. The battle between Saber and Rider has the same outcome in many different worlds; however, it is not always by the same person, or the same way. Rated T for content.