Kamen Rider x Kamen Rider Fourze & OOO Movie Wars Mega Max

Movie War Mega Max featured the first seven Kamen Riders (Kamen Rider 1, 2, V3, Riderman, X, Amazon, and Stronger) to commemorate the franchise's 40th anniversary. Trailers for the film shown during airings of Fourze also showed the return of Kamen Rider Double as well as a new form for Kamen Rider OOO. Unlike previous Movie War films, where they were divided into 3 segments, Movie War Mega Max is divided into 5 parts. Like previous Movie War films the secondary Kamen Rider of Kamen Rider Fourze, Kamen Rider Meteor, made his debut in the film.

• Yasuko KobayashiScreenplay
• Koichi SakamotoDirector
• Kazuki NakashimaScreenplay

• Sota FukushiGentaro Kisaragi / Kamen Rider Fourze
• Shu WatanabeEiji Hino / Kamen Rider OOO
• Renn KiriyamaShotaro Hidari / Kamen Rider W / Kamen Rider Joker
• Masaki SudaPhilip / Kamen Rider W
• Ryosuke MiuraAnkh
• Erina ManoNadeshiko Misaki / Kamen Rider Nadeshiko
• Tetsu InadaKamen Rider 1 (voice)
• Takahiro FujimotoKamen Rider 2 (voice)
• Hirofumi TanakaKamen Rider V3 (voice)
• Takayuki MasudaRiderman (voice)
• Isshin ChibaKamen Rider X (voice)
• Koji TobeKamen Rider Amazon (voice)