Big Machine

is a 2012 superhero film which features a crossover between the Kamen Rider and Super Sentai series.

The protagonists of Kamen Rider Decade and Kaizoku Sentai Gokaiger are featured, but the casts of Kamen Rider Fourze, Kamen Rider OOO, and Tokumei Sentai Go-Busters also participate. Other returning cast members include Rina Akiyama and Kenjirō Ishimaru reprising their roles from Kamen Rider Den-O.

In its first week it was aired as part of TV Asahi's Super Hero and Heroine Summer Vacation special on August 25, 2013.

The film begins with Captain Marvelous of the Gokaigers confronting and defeating the first seven Kamen Riders before Tsukasa Kadoya appears before him. While Marvelous swears to him he will not rest before all Kamen Riders are destroyed, Tsukasa claims he will not stop until all Super Sentai are vanquished. While watching Earth from the Moon, Kamen Rider Fourze, Yuki and Miu see a series of shooting stars that turn out to be a Zangyack fleet. Within moments, Amanogawa High is invaded by Zangyack militants as Gentaro comes to Shun's aid before being blasted away from the Kamen Rider Club to an area where he meets Captain Marvelous. Introducing himself as Kengo and Yuki arrive while turning down Gentaro's friendship offer, Marvelous reveals his intent to kill many Riders such as Gentaro and becomes Gokai Red. Transforming in response, Kamen Rider Fourze is overpowered by Gokai Red before sicking the soldiers on him. But the Gokai Galleon crew arrive and take out the Zangyack soldiers before they attempt to talk Marvelous out of attacking the Kamen Riders. But Gokai Red is unconvinced as he summons his new ship, the Gigant Horse, and calls in Warz Gill, Ackdos Gill, Brajira of the Messiah, the Black Cross King, Long, Hades God Dagon, the Questers, and Chimatsuri Doukoku. Though Kamen Rider Meteor arrives to lend a hand, Gokai Red retaliates by summoning Rider Hunter Silva to cripple Meteor before inflicting the death blow and tells his crew that Kamen Rider Decade has already taken the lives of the Gorengers and some of the other Super Sentai teams.