Kamen Rider × Kamen Rider W & Decade: Movie War 2010 is the commercial promotion for theatrical releases of the Kamen Rider Decade epilogue film, the Kamen Rider W flashback film, and a third film that serves as a crossover between the two and finale to Decade. Unlike subsequent Movie War films, this film focuses more on Decade than W. The films were released on December 12, 2009.