Aka：Gantz: Génesis (Gantz: Parte 1) / Gantz / Au commencement / Gantz - Spiel um dein Leben / 杀戮都市 / GANTZ / Ганц / Gantz - L'inizio / גאנטס / Ґанц / 간츠 / Gantz / สาวกกันสึ พันธุ์แสบสังหาร / Sinh Tử Luân Hồi (Live-Action) / 殺戮都市 / گانتز
Summary：After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.
