The game, set in the thrilling "Holy Grail War", revolves around seven distinct eras and their corresponding Holy Grails. Players are immersed in each chapter of the narrative, engaging in intense battles against each other. It showcases captivating main scenes along with diverse character quests, offering a rich gaming experience.

Boasting millions of words of captivating original story, this game promises an engrossing tale.

Fans of the Fate series, as well as newcomers, will find ample content to enjoy in this game.

In 2017, Chaldean, an organization dedicated to safeguarding Earth's future, made a startling revelation: human history stands to be erased in 2019. Suddenly, the promised future vanished without warning.

Questions arise: Why? How? WHO? What to do?

Meanwhile, in 2004, a rural town in Japan witnessed an unprecedented event - the emergence of an unobservable area. Suspecting it as the cause of human extinction, the Chaldeans embarked on their sixth experiment - a journey into the past.

Using a forbidden ritual, they transformed humans into spirit children and sent them back in time. By intervening in critical events, they aimed to locate, identify, and destroy the temporal singularity.

This mission, classified as the Great Order, was a directive to protect humanity at all costs.

Those who oppose the fate of human history and strive to safeguard humanity bear the title of Great Order.

Optimized for smartphones, this game offers a unique blend of command card and RPG gameplay.

As masters, players collaborate with spirits to vanquish foes and unravel the mysteries surrounding humanity's vanishing history.

Players have the freedom to assemble a party with their favorite spirits, encompassing both classic and contemporary characters.

The game's narrative begins in 2015 (2016 for the national service) in Chaldean, a secluded locale nestled within snow-capped mountains reaching 6000 meters. Here, the protagonist arrives as one of the final 48 masters recruited for a clandestine plan. Among them, 38 hail from renowned magical families, while the remaining 10, including the protagonist, are ordinary individuals blessed with exceptional talents.

Upon entering the Institute, the protagonist undergoes a mock battle test, only to collapse into a coma due to his brain's inadequate adaptation. Shortly after, he meets the strict director, Olga Marie Asmiret Animsfia, who is known as "the devil" due to her rigorous training standards. However, when faced with the prospect of being expelled, a key member of the Institute named "Rafe" intervenes, defending the protagonist and allowing him to stay. Subsequently, the protagonist is escorted to the medical area to meet Dr. Roman, but their encounter is abruptly interrupted by a cataclysmic explosion that rocks the Institute.

Amidst the chaos, the system activates, setting the teleportation coordinates to January 30, 2004, in Touki City. Before the teleportation can be initiated, the protagonist frantically searches for survivors and stumbles upon a severely injured Matthew. Together, they are transported to the past, marking the beginning of a new chapter in their journey.

The game is centered around turn-based battles, where players assume the role of a "master". As this master, they summon and command powerful beings known as "Servants" to engage in combat against enemies. The narrative of the game is presented in the form of a visual novel, allowing players to delve into unique scenarios tailored for each Servant.

These Servants, often historical, literary, or mythological figures from diverse cultures, are acquired through an intricate mechanism akin to egg-twisting.

The game's backdrop is the clandestine research organization known as "Phineas Chaldean" (or simply Chaldean). This organization leverages a range of technologies to observe the future of mankind, one hundred years ahead, with the ultimate goal of ensuring the perpetuity of the human era.

Six months prior to the game's narrative, Chaldean conducted an observation and discovered that human history was unexpectedly extinguished in July 2016. Delving into the cause, researchers hypothesized that the observation itself, occurring at the same time, was somehow linked to the sudden emergence of seven "special points" in the timeline.

In order to safeguard human history, Chaldean recruited 48 individuals, including the protagonist, who possess the ability to perform spirit transfers. These individuals are sent back in time to investigate and rectify the "special points".

The game is divided into two major parts. The first focuses on the protagonist's journey to correct the seven "special points" (with the seventh and sixth special points being the most popular among players and having received anime episodes and theatrical adaptations).

The second part of the game introduces a new challenge: the world is invaded by an anomaly belt, and the protagonist must continue to fight in order to safeguard the world.

During battles, the player commands a team of up to six Servants, with three actively participating and three serving as reserves. Each turn, the player is presented with a set of five command cards and can utilize up to three of them to attack in a single turn.

Each Servant has five command cards available to the player. The cards of all Servants on the field are shuffled once per turn and dealt to the player. These cards are categorized into three types: Buster (for heavy attacks), Arts (medium attacks that recharge the Servant's "treasure"), and Quick (light attacks that generate a blast star and increase the likelihood of a blast in the next turn).

If the player uses three similar cards in a single turn, they create a "chain" that provides a bonus based on the card's attributes. Additionally, if three cards corresponding to the same Servant are selected, a "Brave Chain" occurs, appending a powerful additional attack at the end of the turn.

Each Servant also possesses unique skills that can be activated before drawing command cards. These skills have various effects in battle, and each Servant also has a special command card called "Treasure" that appears when a gauge is filled.

The "Master" themselves possess a separate set of skills and special abilities known as "Command Spells," further enhancing their strategic options in combat.