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description Gantz:O Overview

Death does not have to be the end; one can live again, but only through beating the game posed by the black ball called Gantz. On his way home to celebrate his younger brother's birthday, brave and kind-hearted student named Masaru Katou is stabbed to death. He awakes in a small room with a cityscape view in the heart of Tokyo—and he is not alone. To his surprise, it is not the afterlife, but the waiting room for a high stakes game with their lives on the line.

Before he has the chance to process the situation, Masaru is handed a gun and teleported into the center of Osaka to carry out one simple task: eliminate any alien on sight.

info Gantz:O Specifications

help Gantz:O FAQ

What is Gantz:O?

Death does not have to be the end; one can live again, but only through beating the game posed by the black ball called Gantz. On his way home to celebrate his younger brother's birthday, brave and kind-hearted student named Masaru Katou is stabbed to death. He awakes in a small room with a cityscape view in the heart of Tokyo—and he is not alone. To his surprise, it is not the afterlife, but the waiting room for a high stakes game with their lives on the line. Before he has the chance to process the situation, Masaru is handed a gun and teleported into the center of Osaka to carry out one simple task: eliminate any alien on sight.

How good is Gantz:O?
Gantz:O scores 7.55/10 (Very Good) on Lunoo, making it a well-rated option in the Anime category.
What are the best alternatives to Gantz:O?
See our alternatives page for Gantz:O for a ranked list with scores. Top alternatives include: Parasyte: The Maxim, Inuyashiki: Last Hero, Elfen Lied.
How does Gantz:O compare to Parasyte: The Maxim?
See our detailed comparison of Gantz:O vs Parasyte: The Maxim with scores, features, and an AI-powered verdict.
Is Gantz:O worth it in 2026?
With a score of 7.55/10, Gantz:O is a solid option in Anime. See all Anime ranked.

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