After being brutally murdered in a subway station, a teen boy awakens to find himself resurrected by a strange computer named Gantz, and forced to fight a large force of invading aliens in Osaka.
- Genre: Science Fiction, Action, Animation
- Studio: Digital Frontier, TOHO, dentsu, Fields Corporation, Jinnan Studio, King Records, Kyoraku Industrial Holdings, Lawson Entertainment
- Keyword: hero, monster, game, adult animation, anime, horror, 杀戮都市:o
- Cast: Yuki Kaji, Daisuke Ono, Saori Hayami, Mao Ichimichi, Masaya Onosaka, Kenjiro Tsuda