Kantai Collection, often abbreviated as KanColle, is a Japanese franchise centered around a free-to-play web browser game developed by Kadokawa Games. It was launched in 2013 and has since expanded into various media, including an anime series. The story features characters known as 'Fleet Girls,' anthropomorphized warships, who battle against an alien enemy. The franchise has gained a large fan base for its unique concept and engaging gameplay, further popularized by its animated adaptation.