Kamen Rider Den-O & Kiva the Movie: Climax Deka (劇場版 仮面ライダー電王&キバ クライマックス刑事（デカ）, Gekijōban Kamen Raidā Den'ō Ando Kiba Kuraimakkusu Deka, Masked Rider Den-O & Kiva The Movie: Climax Detectives) is a Japanese superhero tokusatsu film in the Kamen Rider franchise. Climax Deka is the second film to feature the characters of the television drama Kamen Rider Den-O and the first to feature the characters of Kamen Rider Kiva. It opened in theaters on April 12, 2008 as part of the Kamen Rider Spring Festival (春の仮面ライダー祭, Haru no Kamen Raidā Matsuri). In its first weekend, it took the top spot at the Japanese box offices, unseating the Japanese release of Cloverfield. In the end, it grossed 730 million yen, over double the normal revenue for a Kamen Rider film. Though it is considered the first Heisei rider teamup however the story focuses more on Den-O than Kiva.