Zenless Zone Zero (ZZZ) takes us to a world on the brink of total extinction following the emergence of Hollows: spatial anomalies that arise from nowhere like dark spheres, devouring entire cities, distorting reality, and transforming those trapped within into monstrous mutants known as Ethereals. In the midst of this global collapse, humanity found its last bastion in New Eridu. This miraculous metropolis not only learned to survive the disaster but to monopolize it. Using reverse-engineered technology, the city extracts a highly valuable substance from the Hollows called Ether, turning the very source of its destruction into the fuel for its economy and the catalyst for its spectacular technological and urban development. However, control of this resource has fragmented society. New Eridu is a hotbed of factions with cross-purposes: massive corporations like Belobog Heavy Industries, groups of dubious legality like the Cunning Hares, law enforcement, and elite factions like the mysterious Victoria Housekeeping. Everyone delves into danger for money, power, or secrets. At the heart of this ecosystem operate the Proxies, hackers and illegal guides who possess the necessary technology to navigate the changing maze of the Hollows without losing their sanity or their lives. The main plot follows siblings Wise and Belle, who, under the legendary alias Phaethon, operate a modest video rental store as a front to hide their true and highly sought-after identity as Proxies. Through them, the story unfolds as an urban thriller where the secrets behind the origin of the Hollows, the corruption of New Eridu's government, and the mystery of the siblings' own pasts intertwine in a web of clandestine missions and large-scale conspiracies.
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Frequently asked questions
What is Zenless Zone Zero?
Zenless Zone Zero is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.
How do I play Zenless Zone Zero online?
You play Zenless Zone Zero online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.
Is Zenless Zone Zero free to play online?
Yes. Your first visit after each 24-hour window automatically starts a free Zap allowance (no card needed) — enough to play Zenless Zone Zero regularly. Want more? There are subscription plans.
Is there a Zenless Zone Zero app?
WorldOS runs in your mobile and desktop browser, so you can play Zenless Zone Zero online without installing anything.
What are some games like Zenless Zone Zero?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Zenless Zone Zero.
Can I make my own Zenless Zone Zero?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.