Girls' Frontline

Top: Strategic map interface screenshot
Bottom: Combat interface screenshot

The gameplay involves the acquisition of T-Dolls through gacha game mechanics, which can then be assembled into squads known as echelons, and sent into battle to complete combat missions, simulations, or logistics support tasks.[2][9] The T-Dolls are female moe anthropomorphisms of real-world small arms, which are categorised into combat classes such as handguns, submachine guns, assault rifles, sniper rifles, machine guns and shotguns.

Missions consist of a turn-based strategy puzzle where the player directs echelons across a map consisting of linked nodes, with the goal of fulfilling pre-determined mission requirements, such as capturing an enemy command node or rescuing hostage units. Players are able to deploy, move and retreat echelons during their turn by expending action points, and likewise, the AI-controlled enemy team is able to move units during enemy turns. If a player's echelon meets an enemy unit on the same node, a combat sequence is initiated; combat is largely automated, and involves the player activating offensive and defensive skills specific to each T-Doll in real-time, along with moving individual T-Dolls across a formation consisting of a 3×3 square grid. The position of T-Dolls within the echelon's starting formation provide stat enhancements to other T-Dolls, and the individual stats and abilities of the T-Dolls altogether determine the outcome of the battle against the enemy team.[2][9] Some missions, known as night-time battles, will additionally handicap the player with a limit to the number of turns possible, in addition to a fog of war mechanic restricting visibility over the strategic map.

Additional T-Dolls are acquired through random drops after battles, or through the construction component of the game, where the player inputs a desired allotment of in-game resources to construct new T-Dolls, and the amount of resources set affects the chance of different T-Dolls being constructed through the gacha mechanic. T-Doll stats can be complimented by equipment, which are also obtained via a gacha-based construction system.[2][9] Tactical fairies are non-combatant support units that can be added to echelons to provide status buffs to T-Dolls; in-universe, they are described as AI-equipped tactical drones.[10] Closer towards the end-game, the player will gain access to Heavy Ordinance Corps (HOC) units, which are dedicated combat support units such as mortar teams and anti-tank weapons that can be moved around the strategic map to provide supporting fire to echelons in combat from a distance.[11] The end-game content also introduces the Protocol Assimilation system, where enemy Sangvis Ferri units can be captured, interrogated using electromagnetic pulse bursts, and then sent into battle once successfully assimilated.[12]

Outside of combat, the player is required to manage their supply of in-game resources, level up facilities within the base to gain economic bonuses or access to different features, and improve the combat stats and abilities of T-Dolls through training and other character-raising mechanics. Cosmetic items such as T-Doll costumes and furniture used to decorate the dormitories of T-Dolls are obtained through another separate token-based gacha system; decorating dormitories also provides an additional effect of raising T-Dolls' affection stats.[2][9] Additionally, some event-limited cosmetic items can also be purchased through real-world microtransactions.

Examples of anthropomorphized T-Dolls within the game, depicting (from top left to bottom right) Glock 17, MP7, ST AR-15, WA2000, SPAS-12, Negev

The game is set in a war-torn future where tactical dolls, more commonly known as T-Dolls, are almost exclusively used for combat in place of humans, some having been repurposed from their previous life as civilian androids. The majority of the world is uninhabitable due to contamination from the Collapse Fluid, and much of humankind is dead. In 2062, the artificial intelligence of Sangvis Ferri spontaneously rebels, with their T-Dolls and robots killing their human masters and taking over nearby areas. In response, the private military company Grifon & Kryuger is hired to contain and eliminate Sangvis Ferri forces; the player assumes the role of a recently promoted G&K Commander.[2] The base storyline focuses on the four characters M4A1, ST AR-15, AN-94, and AK-12.

The game has had several collaboration events with other game companies. On September 4, 2018, the PlayStation 4 rhythm game DJMax Respect introduced three songs from Girls' Frontline as DLC,[13] while time-limited DJMax Respect mission events were added to the global release of Girls' Frontline in May 2020.[14]

A collaboration event for Honkai Gakuen took place in November 2017 for the Chinese release of Girls' Frontline, and featured characters from that game as guest T-Dolls.[15] On November 20, 2018, Girls' Frontline featured a crossover event with Arc System Works where Noel Vermillion and Elphelt Valentine from BlazBlue and Guilty Gear respectively would appear in the game as recruitable allies.[16] In 2019, the game featured a collaboration event with VA-11 HALL-A,[17] which included the addition of mission events and VA-11 HALL-A characters as obtainable T-Dolls.[18]

• 
  Promotional campaign featuring "Grifon Express"[19] train stopped at Zhongshan Park station
• 
  AirAsia X A330 in Girls' Frontline livery

MICA Team originally started as a dōjin circle consisting of three people, however during the development of Girls' Frontline, gradually expanded into a company of 117 employees. The game began as an inspiration work based on Kantai Collection, however with the premise of anthropomorphized warships replaced with that of firearms, based on the team's anticipations that similar moe anthropomorphism games would become popular in China.[20]

Cosplay of AA-12 at the 30th Asian Animation Creation Exhibition

Girls' Frontline was the 3rd top grossing game by revenue on Google Play and the 5th top grossing game on the Apple App Store for the South Korean region in 2017.[29] The perception that the game doesn't force players to use pay-to-win microtransactions compared to other mobile games, along with its encouragement of player interaction during automatic battles, are often-cited reasons for the game's popularity in South Korea, where it is the first Chinese-developed game to be able to compete with domestically created rivals.[30][31]

The tactical role-playing game Reverse Collapse: Code Name Bakery (Chinese: 逆向坍塌：面包房行动) developed by MICA Team and published by X.D. Network has been announced for Nintendo Switch, Microsoft Windows, and smartphone platforms. Set 30 years after in the same universe as Girls' Frontline, it is a remake of the original dōjin game Code Name: Bakery Girl featuring new art, character voices, story, and game mechanics.[32]

A sequel titled Girls' Frontline II: Exile (Chinese: 少女前线2：追放) was announced in May 2020 for release on smartphone platforms, alongside two spin-off games titled Girls' Frontline: Glitch (Chinese: 少女前线：谲境) and Project Neural Cloud (Chinese: 云图). Exile will still follow the core design of strategic combat, however will introduce 3D modelling for the characters.[33]

• Azur Lane, a shoot 'em up game featuring moe anthropomorphizations of World War II warships
• Kantai Collection, a Japanese fleet management game which originally popularised the concept of moe anthropomorphism collection games
• Upotte!!, a Japanese manga series and television anime featuring anthropomorphized firearms as schoolgirls

• Official English website
• Official Japanese website
• Anime official website (in Japanese)
• Girls' Frontline Wiki, an English-language wiki website dedicated to the game