Blue Archive (Japanese: ブルーアーカイブ; Korean: 블루 아카이브; Chinese: 蔚蓝档案) is a South Korean role-playing game developed by Nexon Games (formerly NAT Games), a subsidiary of Nexon. It was released in 2021 for Android and iOS, first in Japan by Yostar and worldwide later that year by Nexon.[3] The game is free-to-play with gacha game mechanics as a means to obtain new characters. An anime television series adaptation titled Blue Archive The Animation has been announced.

The player and protagonist is a Sensei who was summoned to the academic city of Kivotos by the president of the General Student Council, an extrajudicial committee governing the schools. Following her sudden disappearance, criminal activity rises around Kivotos and the player is tasked by the remaining members of the council to resolve the issues and help search for the president.