The original manga has inspired a television anime, numerous spinoff manga, several novel series, a two-part live-action film project, a spinoff live-action television series, and an original video anime (OVA).
Two of the spinoff manga — Attack on Titan: No Regrets and Attack on Titan: Junior High — received anime adaptations of their own.
Marketing company CDG revealed on Monday that Hajime Isayama’s Shingeki no Kyojin (Attack on Titan) manga has more than 66 million copies in print.
Both Funimation and Crunchyroll streamed the first season as it aired in Japan, and Funimation released the series on home video in 2014.