You die, wake up in a room with a black sphere, and realize your second chance comes with a price that keeps getting worse. Gantz doesn't let you pretend survival has meaning, every mission forces you to choose between saving strangers and saving yourself, and the game doesn't care which choice you make. The shock isn't the gore or the aliens; it's watching decent people discover they're not decent enough to survive, then getting thrown back into the ring anyway. This show asks what you're actually willing to do when nobody's watching and death stops being the ending.
Kei Kurono dies in a subway accident and wakes in a sealed apartment with a dozen other recently deceased strangers. A featureless black sphere dominates the room, communicating only through cryptic assignments: hunt down alien creatures hidden throughout the city, or face obliteration. Kill or be killed. Complete the mission and earn points toward resurrection, or fail and vanish forever. The catch? Every death might not be the last one. Trapped in this brutal cycle, Kurono discovers resurrection comes with a cost beyond physical trauma. Each mission forces him to confront what he's willing to sacrifice for survival, watching others descend into madness, greed, and depravity as they chase a second chance at life. The aliens are only part of the horror. Gantz doesn't flinch from showing human ugliness at its worst: people betray, exploit, and destroy each other in desperation. This is survival stripped of morality, wrapped in visceral action and psychological breakdown. Expect graphic violence, disturbing imagery, and a world where coming back from death doesn't mean redemption.