Azur Lane (碧蓝航线) is a Chinese shipgirl-themed side-scrolling shoot 'em up mobile game developed by Shanghai Manjuu and Xiamen Yongshi.
Like Kantai Collection, the game is set during World War II and mainly features collecting and controlling moe personifications of warships from major participants of World War II. Unlike Kantai Collection, it features side-scrolling shooter gameplay with mechanics akin to those of Touhou. Other gameplay elements, such as customization of a interactive backyard and marrying in-game characters, are also present.
The game has been adapted into several manga and novelizations. A PlayStation 4 game and a TV anime adaptation are in production.
The game was launched on May 25th, 2017 in China, on September 14th, 2017 in Japan, on March 27th, 2018 in Korea, and on August 16th, 2018 in English.
As of September 12, 2018, the number of players registered surpassed at least five million.
The same rules that apply to Kantai Collection apply here. Don't tag mecha musume, personification, sisters, ship, World War II, or Imperial Japanese Navy unless these things are present outside of the shipgirls themselves.