Citadel Zero
Defend the last citadel on a dying alien world. Summon a gacha collection of bio-engineered defense towers, forge a custom loadout, and conquer three modes, story-driven Chronicle, roguelite Contracts, and 1v1…
Citadel Zero is an indie developed by PYRHAMID Studio, released 17 July 2026 on PC (Microsoft Windows).
What Citadel Zero is
Citadel Zero is an indie game developed by PYRHAMID Studio and released in 2026. It was published by PYRHAMID. It is available on PC (Microsoft Windows) only. It runs on ElectronJS.
The premise, in the publisher's words
The planet died long before you arrived. What's left is a wasteland of ruins and rust — and one structure still standing: the Citadel. You are the Architect. You don't fight; you build. From the last intact core, you raise defensive towers across the ruins, guided by Sentinel-7, an ancient machine intelligence that has been holding the perimeter alone for longer than it can remember. It calls you Architect the way you'd name a tool you're not sure will work. The ruins are not empty. Mutated humanoid sentinels watch from the wreckage — what remains of whoever built this place — and they come in waves, testing the line. Beyond them, five regions each answer to something older: the Aether…
How it plays
It is played from a bird view / isometric perspective. Its themes are science fiction. It is a single-player game with no multiplayer component. Available modes: Multiplayer and Single player.
What it launched against
Citadel Zero launched on 17 July 2026, within three weeks of Assassin's Creed Black Flag Resynced, Beast of Reincarnation, Halo: Campaign Evolved and Big Walk.
Released around the same time: Assassin's Creed Black Flag Resynced, Beast of Reincarnation, Halo: Campaign Evolved, Big Walk.
Official trailer
Sourced from the publisher’s YouTube channel.
Screenshots
All media
Quick answers
Citadel Zero — frequently asked questions
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