Grail Shards are the scattered fragments of the Holy Grail and the central collectible objective in Tides of Annihilation. The Grail did not survive the cataclysm intact. When the invasion from Avalon tore through modern London and folded the two realms into one, the artifact was broken and its pieces were flung across both worlds. Gwendolyn, the lone human survivor of the disaster, is bound to the task of recovering them. Her journey through the ruined city and the otherworldly island that now overlaps with it is framed around this one long pursuit, and the shards serve as both the story's engine and its measuring stick for how far she has come.
Arthurian Legend Background
In the Arthurian tradition that the game draws from, the Holy Grail is the object of the greatest quest any knight can undertake. It is most commonly described as the cup used at the Last Supper, later carried to Britain by Joseph of Arimathea, and it is presented in the medieval romances as a sacred relic that grants healing, spiritual vision, or a direct encounter with the divine. The Grail Quest is the arc that defines the later career of the Knights of the Round Table, and in most retellings it is also the event that breaks the fellowship apart. Only Galahad, Percival, and Bors are judged pure enough to reach it, and even among them Galahad alone is granted the full vision before he is taken up from the world.
Across those stories the Grail is almost never shown as a piece of loot that can simply be collected. It is an ideal, a test, and a reward reserved for a specific kind of moral character. Tides of Annihilation takes that inheritance and turns it in a new direction. Rather than setting up the Grail as a distant singular vessel waiting at the end of a pilgrimage, the game begins with the relic already shattered. What remains is not a sacred cup but a set of tangible fragments spread through a broken world, each one a piece of a power that used to be whole. The quest survives the transformation, but the object at its center has changed shape.
Grail Shards in Tides of Annihilation
Within the setting, the Grail shards are the physical remains of an artifact that was destroyed in the same event that devastated London. The invasion from Avalon did not only kill people and collapse buildings. It pulled the two realms into overlap through a folded mirror-like space, and the forces involved in that collision are what broke the Grail apart. The pieces that result are not ordinary debris. They carry enough of the original relic's power to matter, which is why the demi-gods of Avalon are interested in them and why Gwendolyn's small human-scale journey becomes a story the otherworld is actively trying to stop.
The shards function as both narrative milestones and a running measure of the protagonist's capability. Each recovery is a step toward reassembling the whole, and each one also signals that Gwendolyn has pushed deeper into territory the invaders control. The game has not disclosed a final count of shards, the exact mechanical rewards tied to individual pieces, or the precise order in which the main story introduces them. What has been shown is the consistent framing: shards are the thing the story is pointed at, they are scattered across two realms, and they must be gathered before anything in the broken world can be made right again.
Gwendolyn's Objective
For Gwendolyn, the hunt for the shards is not abstract heroism. It is a personal goal tied to three linked purposes that the developers have described directly in public-facing material. Each one motivates her for its own reasons, and together they explain why she is willing to cross into Avalon at all rather than remain in the relative safety of what is left of London.
Save her sister: Gwendolyn's sister was lost during the cataclysm that tore through the city. The Grail is said in the game's promotional material to grant a wish to whoever completes it, and her first reason for pursuing the shards is to use that wish to bring her sister back.
Restore the world: London and Avalon have been fused together, and the resulting overlap is unstable and hostile to human life. Reassembling the Grail is framed as the means by which reality itself can be put back into its original shape.
Stand against the demi-gods: The sisters of Avalon will not surrender their claim on the human world without a fight. Each shard Gwendolyn recovers weakens their grip and gives her enough standing to confront the ones who caused the invasion in the first place, including
Mordred and the others who rule fragments of the mirror realm. The three goals are not alternatives between which Gwendolyn must choose. The way the story is structured, one feeds the next. She cannot save her sister without restoring the world, she cannot restore the world without confronting the demi-gods, and she cannot confront the demi-gods without the strength she draws from the shards she has already recovered. The entire main-story loop flows through the same objective.
Where Shards Are Found
The shards are distributed across both sides of the game's setting. Some are in the ruined streets and interiors of modern London, scattered through neighborhoods that have been partly swallowed by the invasion, and others sit deeper in the territory of Avalon proper, which the game presents as an island of mythic architecture overlapping with the human city through the folded mirror realm. The division is deliberate: Gwendolyn has to learn to move between both sides of the overlap before she can recover the full set, which is why early encounters take place in recognizably British urban ruins and later footage moves into more overtly otherworldly spaces.
Where specific shards rest, and how they are guarded, is tied to the pre-release footage that has been released. Public demos show Gwendolyn crossing through Piccadilly Circus, descending into the London Underground, and fighting through environments that have been bent out of their original shape by the invasion. Shown alongside those setpieces are confrontations with large-scale enemies, including the demi-gods themselves, which suggests that at least some shards are held by boss-level opponents rather than simply placed in the world to be picked up. Combat, exploration, and traversal through the overlap between the two realms are the routes by which the fragments are gathered, and the fights against the sisters of Avalon are where the highest-stakes recoveries take place.
Connection to Avalon's Sisters
The shards also connect directly to the cast of mythic figures the game positions as its antagonists. The sisters of Avalon, a group drawn from the legend of the eight sisters of Morgan le Fay, preside over different parts of the folded realm, and they treat the intact Grail as a prize that belongs to them rather than to any human claimant. Their opposition to Gwendolyn is not incidental. Each sister the player encounters is tied to the shards in some way, either as a guardian, a holder, or a beneficiary of the artifact's destruction, and the confrontations with them are the moments when pieces change hands.
Among the named figures, Mordred is presented as a direct rival whose defeat is central to the story's arc, and Tyronoe the Ferryman is one of the demi-gods Gwendolyn must face as she moves through the mirror realm. Against this hostile line-up, Gwendolyn is not alone: Niniane travels with her as a companion, a mythic counterpart to the sisters who have turned against the human world. The shards are therefore not only the thing Gwendolyn is collecting, they are the thing that organizes every alliance and every confrontation the story presents. Who helps, who resists, and who claims the prize are all decided in relation to the fragments.
Narrative Significance
Taken together, the Grail shards function as the spine of the entire game. They are the reason Gwendolyn leaves the surviving parts of London at all, the reason she crosses into Avalon, the reason she is willing to fight demi-gods rather than simply hide, and the reason there is a story to tell in the first place. Every setpiece shown in pre-release material eventually circles back to the same throughline: a human survivor pursuing the scattered pieces of a relic that could undo the disaster which took her world apart.
The design choice to break the Grail into shards, rather than to place it whole at the end of a single pilgrimage, is also what makes the legend playable. A cup sitting at the end of a corridor offers one moment of payoff. A relic broken into many fragments offers a series of objectives, each one with its own location, guardian, and cost, and each one carrying a measurable change in Gwendolyn's ability to keep going. The Arthurian source material is preserved in spirit, the Grail is still the goal worth dying for, but it is expressed through a structure the player can actually engage with across the full length of the game.
Role: central collectible objective of the main story
Origin: fragments of the Holy Grail, shattered during the invasion from Avalon
Distribution: spread across both modern London and the folded mirror realm of Avalon
Collector: Gwendolyn, the lone human survivor of the cataclysm
Purpose: restore her sister, repair the world, and counter the demi-gods of Avalon
Guardians: the sisters of Avalon, including Mordred and Tyronoe, and the larger forces of the mirror realm