I saw this movie while surfing through Netflix last night. GANTZ:O is based off of WEEKLY YOUNG JUMPS's GANTZ but it's a bit of an alternate timeline. As a 3DCG anime, this film was totally awesome. If you're a fan of the GANTZ anime and manga then you're going to love GANTZ:O. I believe GANTZ:O is going to be released on Blu-Ray today in Japan, but you can watch the film now on Netflix. I hope Japan does more 3DCG animes instead of the live action films like Attack on Titan which look awful compared to the anime.