Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core

'''Kamen Rider × Kamen Rider OOO & Double feat. Skull: Movie War Core''' is the name given to the commercial promotion for the December 18, 2010, theatrical releases of the Kamen Rider Double film, the Kamen Rider OOO film, and a second film that exists as a crossover between the two series.