Much like with the Kamen Rider Kiva film Kamen Rider Kiva: King of the Castle in the Demon World, Kamen Rider Decade: All Riders vs. Dai-Shocker had a series of Internet and cellphone spin-off films titled Kamen Rider Decade: All Riders Super Spin-off (ネット版仮面ライダーディケイド オールライダー超スピンオフ Nettoban Kamen Raidā Dikeido: Ōru Raidā Sūpā Supin'ofu). Thirty of these short films were made, taking place on the World of Net (ネットの世界 Netto no Sekai), with the first aired on July 17, 2009. There were main five different formats for the web movies: Petition! (陳情! Chinjō!) where topics like should Tackle count as a Kamen Rider are brought up to Toei to make it so. Check! (チェック! Chekku!) to show off a Kamen Rider's suit and explanation behind the design. Also known as Rider Fashion Check. For Real! Heisei/Shōwa Rider Athletic Meet!! (ガチ！平成/昭和ライダー運動会!! Gachi! Heisei/Shōwa Raidā Undōkai!!) sports competitions between the Kamen Riders. Which One! (どれだ! Dore da!) and Quiz! (クイズ! Kuizu!) quiz shows with Tsukasa, Natsumi, Yusuke, Daiki as contestants while Kenichi Suzumura and Narutaki are the hosts with suit actor interviews. Transform! (変身! Henshin!) where Decade teaches a random person how to assume a Rider transformation pose.