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.
Generative AI helped create some pixel-art sprites, icons and backgrounds, which the developer reviewed and refined.
Not used, per the developer
In-game AI
Not mentioned
CodeMusic & SFXVoiceWritingTranslationMarketing
Read the full disclosureQuoted from the Steam store page
Some of Citadel Zero's visual assets (pixel-art sprites, icons, and backgrounds) were created with the help of generative AI tools, then reviewed and refined by the developer. All such content is pre-generated and baked into the game — Citadel Zero performs no real-time AI generation and connects to no AI service while you play.
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Players · followers
Growth
Players online
Last 7 days, hourly · now 0 · 24h peak 0
Collecting dataGameDB started tracking this game on Sep 23, 2026. The chart fills in as hourly snapshots arrive; the latest reading is 0.
Steam followers
Daily snapshot of public Steam data
Collecting dataGameDB started tracking this game on Sep 23, 2026. The chart fills in as daily snapshots arrive.
Released games rank by momentum: peak players over 24 hours, growth against the previous days and new reviews, with a launch boost that fades over the first week. Released and upcoming games are charted separately; estimates and stars are never mixed in.
Made by
Developer
PS
PYRHAMID Studio
Developer on SteamPublished by PYRHAMID
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Citadel Zero
