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 PvP Ascension. Tower defense meets deck-building meta-progression.

Launch options

Hourly peaks, UTC. All-time peak covers SteamRaw's recorded history.

Regional prices

All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.

Price history, US store (USD)

Branches

Depots

A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.

Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 12 September 2026 05:19 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).

No changes recorded since SteamRaw first saw this app. Every future PICS change will be listed here.

No news for this app.

Full appinfo as delivered by Steam PICS, changenumber 38664280. Also at /api/app/4889540/raw.

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