Cho Kamen Rider Den-O & Decade NEO Generations: The Onigashima Battleship (劇場版 超・仮面ライダー電王＆ディケイド ＮＥＯ ジェネレーションズ 鬼ヶ島の戦艦 Gekijōban Chō-Kamen Raidā Den'ō ando Dikeido Neo Jenerēshonzu Onigashima no Senkan) is the fourth film adaptation of the popular Kamen Rider Series Kamen Rider Den-O, following Kamen Rider Den-O: I'm Born!, Kamen Rider Den-O & Kiva: Climax Deka, and Saraba Kamen Rider Den-O: Final Countdown. The Onigashima Battleship is the first of the films to be part of the Cho Den-O Series, a new multimedia franchise featuring the characters of Den-O and many new characters. It opened in theaters on May 1, 2009.