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Oneirium CD Key

Oneirium is a dark Victorian nightmare action RPG where the Awakened One navigates dream-reality, confronting monstrous foes. A dynamic Sanity system reshapes visuals, combat, and paths as you choose melee, ranged, or arcane play. Built from scratch in C++, solo-developed—playtest-demo with a Q4 2027 target.

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Publisher/Developer

Zeena, Zeena Studio

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Oneirium description

Overview

Oneirium is a dark Gothic horror experience in early development. You are the Awakened One, a former human who cannot die for good, wandering a twisted Victorian dreamscape where reality and nightmare have collapsed into one. Your quest is to uncover buried truths behind haunting memories while navigating a world where every shadow conceals danger and each encounter reshapes what you believe is real.

Sanity as the Core Mechanic

The Dynamic Sanity system transforms perception, combat, and discovery. You begin with full sanity; as you witness horrors, defeat disturbing foes, and read forbidden knowledge, sanity degrades. High sanity renders the world normally; medium brings subtle distortions; low reveals true forms, unlocks hidden paths, and makes Oneiran, the forbidden tongue, readable in dialogue. The lower your mind, the more you uncover—but the greater the risk of permanent changes to itself and the world.

Combat & Progression

Brutal, precise combat emphasizes timing and mastery without artificial stamina caps. Parry at the right moment to stun enemies, backstep-lunge for a quick retaliation, and roll with i-frames to stay in control of the fight. You choose from three distinct styles: Melee (swords, axes) for high-risk, high-reward brawling; Ranged (bows, crossbows, throwing weapons) for calculated strikes; and Arcane (dark magic) for occult power. Mix-and-match passive trees alongside a trait system to tailor your character. Each weapon brings unique movesets and synergies, with active skills that complement your chosen path.

World, Lore, and Oneiran

The interconnected levels unfold in a dreamlike, industrially charged nightmare where factories churn suffering and secrets lie behind stained altars. The world shifts with your sanity, revealing hidden passages, shortcuts, and entire new zones as Oneiran becomes clearer. Oneiran is scattered across the world as a language the mad can decipher; exploring and discovering lets players uncover hidden lore, powerful items, insights into trapped characters, and prophetic clues. Players can even team up to crack the language, turning exploration into a community mystery across runs.

Story & Quests

NPCs are not quest dispensers but broken souls struggling to endure in a world bent toward nightmare. Branching narratives explore trauma, identity, and survival through sanity-based dialogue options, crisis-time decisions, and consequence chains. Multiple endings per questline—survival, madness, or bittersweet redemption—emerge from your choices and the state of your mind. Examples include a mother seeking her vanished child, a woman haunted by a violent past, a knight losing his grip on reality, and a priest wrestling miracles with horror.

Development & Release

Oneirium is built from scratch on ZEngine, a custom C++/SDL3 engine (no Unity, no Unreal). It is handcrafted by a solo developer with 17 years of programming experience and a dedicated art team. The project remains in Playtest/Demo stages with a target release in Q4 2027. Kickstarter backing supports art assets, voice acting, localization, animated cutscenes, and QA. Regular updates and community involvement are encouraged via Discord, with opportunities to participate and win prizes.

Experience the Madness

There is a constant balance between clarity and madness. The truth costs something, but mastering the Sanity system, solving Oneiran, and choosing your path will reveal a world that rewards pattern recognition, build optimization, and courage in the face of an endlessly shifting nightmare.