Samurai Warriors: Spirit of Sanada, known in Japan as Sengoku Musou ~Sanada Maru~ (戦国無双 ～真田丸～?) is a hack and slash game by Koei Tecmo through their development subsidiary, Omega Force. It is a spin-off of Samurai Warriors 4, part of the Samurai Warriors series, which in turn is a spin-off of the long-running Dynasty Warriors series, both of which are also hack and slash games. It was released on November 23, 2016 in Japan to coincide with the airing of the climax episode of the ongoing NHK TV taiga drama Sanada Maru. It will also be released in North America and Europe in 2017.
The game’s existence was first revealed in a Dengeki PlayStation release calendar in an issue dated on July 12, 2016. Famitsu later confirmed it on July 14, 2016 along with first details and screenshots, including the nature of its collaboration with the taiga drama Sanada Maru. On August 4, 2016, a livestream was conducted which disclosed more information, including the game’s release date; an official trailer was released shortly after in YouTube.