The game is centered around turn-based combat where the player, who takes on the role of a "Master", summons and commands powerful familiars known as "Servants" to battle enemies.

The player takes the role of a "Master" and commands a group of individuals called "Servants", who are typically historical, literary, and mythological figures from various cultures.

If three cards all corresponding to the same servant are selected, then a "Brave Chain" will ensue, resulting in an extra, more powerful, the attack being added to the end.

In 2015, the Chaldea Security Organization draws on experts of both the magical and mundane fields to observe the future of mankind for possible extinction events.

With it, Ritsuka Fujimaru (a young man or woman, depending on the player's choice of gender) who was newly recruited to the organization, and a mysterious girl named Mash Kyrielight, can travel back to 2004 and discover how to save humanity.

[8] Following the events in Fuyuki, Ritsuka Fujimaru and Mash Kyrielight must restore the Foundation of Humanity by retrieving powerful Holy Grails.

The protagonists utilize Rayshift technology to travel back in time to said periods, ranging from Orleans to Okeanos and even the ancient civilization of Babylonia.

He proclaims that Chaldea's attempt to save humanity will not matter if they fail to obtain every single Holy Grail, before leaving.

When all hope seems lost, the Servants that assisted Fujimaru on their quest through every Singularity appear, allowing Chaldea to break through and defeat Solomon, who is revealed to be the Demon God Goetia, a beast that possessed Solomon's corpse and wishes to eradicate humanity in order to travel back to the dawn of humankind.

Just as hope was lost, Romani appeared and revealed that he himself is actually the real Solomon, the Grand Caster who wished to be human after the fifth holy grail war.

Upon the final Singularity being restored to order, Mash is revived via the power of Beast IV, who is revealed to be Fou, a dog-like creature that has journeyed alongside Fujimaru and their party through the entirety of the game.

[9] In the aftermath of the Singularity crisis, Chaldea is under heavy suspicion from various organizations including the U.N. and the Mages Association due to their role in rayshifting in various eras.

Dubbed as Sub-Singularities, Ritsuka is again tasked with handling Singularity Subspecies and solving even deeper mysteries over their existence.

The organization must endure an Ordeal Call to prove that their Extra Classes are connected to humanity so they can stop the mastermind and restore the Earth.

Maaya Sakamoto performed three theme songs for the game: "Shikisai" (色彩, "Color"), "Gyakko" (逆光, Gyakkō, "Backlight") and "Yakudo" (躍動, "Impetus").

On 20 April 2018, it was announced that the North American server was made officially accessible in Australia, Philippines, Singapore, Thailand, and Vietnam.

[13] On 15 December 2021, Delightworks announced that it would spin off its entire game division, including the Grand Order development team, to a new company.

[16] On 2 August 2022, the North American server was made officially accessible to United Kingdom, Germany, France, Italy, Spain, The Netherlands, Finland, Sweden, Poland, Switzerland, Austria, Ireland, Belgium, Norway, Denmark, Portugal, Mexico, Brazil, Chile, and New Zealand.

[24] FGO is also gaining traction in other parts of the world such as in the U.S. and Canada where it already surpassed 1 million downloads after its June 2017 Android release there.

[37] In 2018, Fate/Grand Order drew widespread media attention due to reports of a 31-year old Japanese man identified only as Daigo, claiming to have spent $70,000 to purchase the game's currency, called Saint Quartz, which is used to summon Servants.

[30] It was the world's top-grossing mobile game during the 2020 New Year period, ahead of fellow JRPG title Monster Strike.

[47][48] In September 2021, Chinese service provider bilibili removed all art and most data for many Chinese-themed characters within the game that were deemed historically incorrect.

The film, produced by the studio Lay-duce, was directed by Hitoshi Nanba and stars the voice actors Nobunaga Shimazaki, Rie Takahashi, and Ayako Kawasumi in the roles of the main characters who were projected into the past to try to prevent the approaching extinction of humanity.

[55] A special animation short produced by Ufotable titled Fate/Grand Order x Himuro's World: Seven Most Powerful Great Figures Chapter (Japanese: フェイト/グランドオーダー × 氷室の天地 ～7人の最強偉人篇～, Hepburn: Feito/Gurando Ōdā x Himuro no Tenchi: 7-nin no Saikyō Ijin-hen) was announced at the "Fate/Grand Order Guest Talk Stage in Akihabara Festival 2017" and aired on 31 December 2017.

The animation is based on a 4-panel comedy manga Fate/School Life by Eiichirō Mashin who also provided the scripts, directed by Takahiro Miura, produced by Toshiyuki Kanezawa, with character design by Masato Nagamori, and music by Go Shiina.

[60] An anime adaptation of the Fate/Grand Order: You've Lost Ritsuka Fujimaru comedy manga was announced during the annual Fate Project New Year's Eve TV Special on 31 December 2022.

[71] The main staff from the Babylonia anime adaptation returned to helm the film, with Kinoko Nasu credited for the original script.

The second manga series, -turas réalta- is written by Takashi Kawabuchi and serialized through Kodansha's Bessatsu Shōnen Magazine since 9 August 2017.

[79] Combined, the mobile and arcade versions of the game have grossed a total revenue of approximately $3.4 billion between August 2015 and December 2018.

[84] A second stage play, Fate/Grand Order The Stage: Order VII: The Absolute Frontline in the War Against the Demonic Beasts: Babylonia, based on the Babylonia singularity, played from 11 to 14 January 2019 at Sankei Hall Breeze in Osaka, then from 19 to 27 January 2019 at Nippon Seinenkan Hall in Tokyo.