Fate/Grand Order Arcade is an Arcade Action Game take on Fate/Grand Order released in late July 2018 until services for the game ended after March 2026.

While it carries a similar plot to the original game where one boy or girl winds up becoming the only world-saving master available to Chaldea who carries out missions by travelling across time and space with Mash Kyrielight while new servants join their team to help out, it follows its own continuity with details provided by the loading screens of this game when the game otherwise had no story in its first few years of operation with dialog appearing once Singularity number 6 was availeble. As it was an arcade game, "Arcade" was only playable in designated arcades with a "Grand Order" mode for one-player ventures and a "Grail War" mode for multiplayer games.

The game is played each time with the player buying a special card to save their game and continue the next time they play with them spending a credit to gain 300-900 game points each time they play the game which gets expended as they adventure in the game. Players select the gender of their master and enter their name before being tutored on how "Arcade" works and receive a Mash Kyrielight card physically after the tutorial is done. The game also retains the gacha system from its Mobile Phone Game counterpart with players using fight-earned quest rewards to summon one or ten times to gain Craft Essences and Servants. Players can alternatively pay a price of ten arcade credits and a hundred Mana Prisms to carry out the summoning. Players can only do summons in sets of ten five times within a month. Once the summoning is complete, players gain cards physically from the machine with the same happening each time a servant ascends.

Tropes

• Adaptational Early Appearance: Zigzagged when it comes to BB's appearance in Fate/Grand Order Arcade. Her debut event known as "Invitation from BB ~Electronic Sea Battle Arena~" happened shorty after the Seventh Singularity and before Final Singularity, earlier than "Epic of Remnant" arc in the mobile. However, Summer BB had already been added into the game, meaning that regular BB ended up debuting after her summer version... which means that BB in general debuted way earlier than the Final Singularity.
• Adaptational Wimp: This arcade game introduces Larvae/Tiamat, who is essentially Tiamat in Sleep-Mode Size (or at least, a Giant Woman's equivalent). As a fragment of her true self, she's naturally less powerful than she was as a Beast, but she suffers most in areas in which she formerly excelled incredibly. She specialized in her absolutely tremendous rankings of her physical attributes, possessing unparalleled strength and durability, befitting of being the primordial dragon of Mesopotamian myth, with a Monstrous Strength skill to make her even more of a juggernaut. In her Larval incarnation, they rank at a subpar C, with the aforementioned skill removed and her agility score still being worse.
• Adapted Out: In Fate/Grand Order Arcade, the plot still being in the "Observer On Timeless Temple" arc means that Mnemosyne is absent on its version of "Lady Reines's Case Files", with the fault of the Singularity being on Rhongomyniad itself.
• The Antichrist: In this arcade game, Nero Claudius is summoned as "Draco", a form fully embodying Christian associations of Nero with Beast of Revelation: her body is draconic, she carries a corrupted Holy Grail, and she has skills called "Number of the Beast" (with 3 effects all lasting 6 turns) and "Nega Messiah". After being defeated, Draco shifts into a being more like Anti-Anti-Christ, and fights entirely on humanity's side as of Fate/Grand Order Mobile.
• Falling Chandelier of Doom: Fate/Grand Order Arcade gives the Phantom of the Opera a chandelier drop as one of his extra attacks.
• Fanservice:
  • Almost all the female Servants are either half-naked or end up that way. Some guys do this too, with several of them becoming or starting shirtless or wearing tight bodysuits. Amusingly, this results in actual fanservice costumes (beachwear, Sexy Whatever outfits) covering more area on the guys and gals than their normal duds.
  • In contrast to the main game, the player can actually see the Servants move around in My Room and in battle. As one would expect, the female characters are subject to Jiggle Physics which becomes more noticeable the fewer clothes they have on.
• Fastball Special: The arcade fighting game reveals that Saint Martha's Noble Phantasm involves summoning Tarasque before smacking him into enemies with her staff.
• Gender Flip: While she was alluded to and had a voiced cameo prior to her official reveal, this Arcade game introduces Merlin Prototype, who is a gender-flip of both her male counterpart Merlin from the main game, and also of the mythological figure Merlin who himself was an amalgamation of different historical and mythological figures; in her native universe, Arthur and Mordred are male, and she's the one who got gender-flipped.
• Jiggle Physics: In Fate/Grand Order Arcade, the female servants do this. It’s more noticeable the fewer clothes they have on.
• The One Guy: Karna is the first male Santa Servant, including the Arcade-exclusive Helena (Christmas) and Suzuka (Santa). He was followed by the also male Nemo before a female character took the role back over, with Abigail Williams taking it.
• Other Me Annoys Me: In a crossover event in Arcade, neither Saber Molay nor his Foreigner counterpart are happy to learn of each other's existence. He's is especially annoyed with her, both because she represents the black stain of his legend and because she's responsible for the problems in the event in the first place. This sort of animosity towards one another extends to his playable debut in "My Kind of Abduction".
• Painfully Slow Projectile: The projectile Leonardo da Vinci fires with Uomo Universale moves surprisingly slowly towards the target. It is rather hilarious in 'here where the enemies are outright staring at the energy ball as it travels to them before exploding.
• Super Title 64 Advance: It's an arcade version of Fate/Grand Order title Fate/Grand Order Arcade.
• Version-Exclusive Content: Arcade introduced the concept of this with certain events, Craft Essences, skins and even units being only accessible through that version of the game. However, the inclusion and eventual exportation of Leonardo Da Vinci (Rider), who was originally an Arcade exclusive unit, into the main game with minor changes to her kit and new art set a precedent for certain skins and units potentially being ported over to Fate/Grand Order. With Arcade's story finished and no new Servants being added, the final list of unobtainable Servants stands as:
  • Leonardo Da Vinci (Rider). The version of her in Fate/Grand Order Arcade is different enough to be counted as a separate unit, though the concept itself was carried over to the main game.
  • Helena Petrovna Blavatsky (Christmas) (Rider)
  • Merlin (Prototype) (Caster), though she is summonable as the Lady Avalon the Pretender.
  • Sita (Archer)
  • Suzuka Gozen (Santa)
  • Draco (Alter Ego), her summonable-in-mobile version being the first playable Beast.