GANTZ: It's announced by Planet Manga - Pledge Times
Gantz Creator Is Apparently In The Dark About Hollywood's Live-Action Adaptation
Gantz: La película live-action de Hollywood avanza... con el desconocimiento del autor
Gantz: The Game User Screenshot #11 for PlayStation 2 - GameFAQs
Gantz: O Theme 1 PS4 - YouTube
Gantz: The Game (2005)
PS4Pro】龍が如く5 ムービー集 / 桐生一馬の軌跡 | ガンツ, 桐生一馬, 漫画
Manga, Anime, Lineup
GANTZ: The Game PS2 Gameplay HD (PCSX2) - YouTube
ArtStation - Gantz O fan art-Anzu Yamazaki
Gantz creator is apparently In The Dark About Hollywood's live-action Adaptation - Game News 24
Amazon.com: GANTZ:O - DVD : Movies & TV
Gantz: O Theme 2 PS4 - YouTube
Just in case. There's a game, but it stuck. https://m.apkpure.com/gantz-o-タップ・バトル・ロワイアル/jp.dle.gantzotbr/download?from=details : r/gantz
YESASIA: Recommended Items - Gantz: O (2016) (Blu-ray) (English Subtitled) (Hong Kong Version) Blu-ray - Yasushi Kawamura, Keiichi Saito, Panorama (HK) - Japan Japan Movies & Videos - Free Shipping - North America Site
Gantz: The Game PS2 VW258-J1 (SLPM 65950) NTSC-J — Complete Art Scans : Konami : Free Download, Borrow, and Streaming : Internet Archive