Kamen Rider W Forever: A to Z/The Gaia Memories of Fate (仮面ライダーＷ（ダブル） FOREVER AtoZ／運命のガイアメモリ, Kamen Raidā Daburu Fōebā: Ē tu Zetto/Unmei no Gaia Memori) is a Japanese superhero film that serves as the Summer Movie adaptation of Kamen Rider W, double billed with Tensou Sentai Goseiger: Epic on the Movie. The film was shot in 3-D, making it the first feature-length film to do so in the franchise. The film guest stars Mitsuru Matsuoka as the film’s antagonist Katsumi Daido, who transforms into Kamen Rider Eternal and leads an undead mercenary group on a formidable assault against Double in Futo City. Kamen Rider OOO makes an early-bird appearance ahead of his in-series debut.
The catchphrase for the movie is “W Forever – Betting the survival of Futo, Fight!” (Wよ永遠に―風都の存亡を賭けて、戦え!, Daburu yo eien ni – Fūto no sonbō o kakete, tatakae!).