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 skill training and other character-raising mechanics. The end-game content also introduces the Protocol Assimilation system, where enemy Sangvis Ferri units can be captured and then sent into battle. In later stages of the game, the player will unlock Heavy Ordnance Corps (HOC) units, which are dedicated fire support units such as mortar teams and anti-tank weapons that can provide supporting fire to echelons in combat. Tactical fairies are non-combatant support units that can be added to echelons to provide status buffs to T-Dolls and either have in-battle abilities or skills that can affect the map in-universe, they are described as AI-equipped tactical drones. T-Doll stats can be complemented by equipment, which are also obtained via a gacha-based construction system or from drops in night battles.

T-Dolls can also be acquired through random drops after battles in addition to the construction component of the game. A score based ranking map is unlocked at the end of every major in-game event, where players can compete for rewards based on their highest score relative to other players during the event. Some missions, known as night-time battles, will handicap the player with a limit to the number of turns possible as well as include a fog of war mechanic restricting visibility over the strategic map. 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. Combat is largely automated, but players can activate offensive and defensive skills specific to each T-Doll in real-time as well as move individual T-Dolls across a formation consisting of a 3×3 square grid. If a player's echelon meets an enemy unit on the same node, a combat sequence is initiated.

The enemy units move during enemy turns based on preset instructions. Players are able to deploy and move echelons during their turn by expending action points, which depend on the number of heliports controlled and the number of echelons deployed. Missions consist of a turn-based strategic battlefield 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. They are categorised into different classes such as handguns, submachine guns, assault rifles, rifles, machine guns and shotguns. The T-Dolls are female moe androids each inspired by one real-world small arm. T-Dolls can then be assembled into squads known as echelons and sent into battle to complete combat missions, simulations, or logistics support tasks. The gameplay involves the acquisition of T-Dolls through gacha game mechanics, where the amount of resources spent on construction can affect the T-Doll acquired. A new anime television series by Asahi Production aired from January to March 2022. Two television anime series based on Girls ' Frontline have been produced, and an official manga is serialised monthly. Girls' Frontline is a prequel of another game developed by MICA Team, Codename: Bakery Girl, released in 2013. The global English version was released on, while the Japanese version was released on 1 August 2018 under the title Dolls Frontline ( ドールズフロントライン) due to the Girls ' Frontline trademark in Japan already being held by another registrant. The game was released in Mainland China on, in Hong Kong and Taiwan on 18 January 2017, and in South Korea on 30 June 2017. Girls ' Frontline ( simplified Chinese: 少女前线 traditional Chinese: 少女前線 pinyin: Shàonǚ Qiánxiàn) is a mobile strategy role-playing game for Android and iOS developed by China-based studio MICA Team, where players control echelons of android characters, known in-universe as T-Dolls, each carrying a distinctive real-world firearm.

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