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.

Developer: PYRHAMID Studio. Publisher: PYRHAMID.

Tags: Solo · PvP, Roguelite, Strategy, Creature Collector.

Steam reviews: Mostly Positive (71% of 21).

Price: Free to play on Steam.

Released 2026-07-17.

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