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. Movie War 2010 is split into three parts.