Girls Frontline is a mobile strategy role-playing game for Android and iOS. 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. The base storyline focuses on the adventures of this commander and the AR Team consisting of M4A1, ST AR-15, M4 SOPMOD II, M16A1, and RO635. Other main characters include the commander's logistics officer, Kalina, AK-12, AN-94, and Angelia of Team DEFY and Team 404, made up of UMP45, UMP9, 416, and Gr G11.