Kantai Collection is a Japanese free-to-play online card game developed by Kadokawa Games. The game was launched on April 23, 2013. As of March 2014, the game is available in Japan only and has 1.7 million registered players. Various media including multiple manga series and light novels have been released, in addition to an officially licensed tabletop role-playing game. A television anime series and PlayStation Vita game have been announced.