本片是一部日本Science Fiction片，上映于2008-08-09，由Ryuta Tasaki导演，由瀬戸康史/武田航平/加藤慶祐主演。
剧情简介：When a powerful new foe known as the Legendorga arises in 2008, Wataru investigates the mystery behind the crisis, which brings him in contact with a man Nago once knew, Shiramine Takato, whose 3WA also possess their own Rider System. When Shiramine explains how everything began in 1986, Wataru uses Castle Doran’s Time Door to travel back in time, leading him to meet his father face-to-face at last. But has Wataru managed to change the future, or will the Legendorga still rise and enslave humanity?
外文名：劇場版 仮面ライダーキバ 魔界城の王
别名：剧场版 幪面超人魔牙 魔界城之王 / 剧场版 蒙面超人魔牙 魔界城之王 / Kamen Rider Kiva The Movie: King of the Castle in the Demon World / Masked Rider Kiva The Movie: King of the Castle in the Demon World
类型：Science Fiction / Action / Adventure
地区：日本
导演：Ryuta Tasaki
编剧：井上敏树
演员：瀬戸康史 / 武田航平 / 加藤慶祐 / 柳沢なな / 高橋優 / 小池里奈 / 熊井幸平 / 松田賢二 / 小越勇輝 / 滝川英治 / 山本匠馬 / 関俊彦 / 遊佐浩二 / てらそままさき（寺杣昌紀） / 鈴村健一 / 秋山莉奈 / 上野亮 / 押川善文
