The Radioactive Heart

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[ E ] INTERACT

SPRINT

☢ THE RADIOACTIVE HEART ☢

A PSYCHOLOGICAL SURVIVAL HORROR EXPERIENCE

You awoke inside a forgotten research facility. No memory. No exit.

At the center of the room pulses something organic — radioactive, breathing, alive.

It speaks. It demands. It grants power in exchange for sacrifice.

But every gift comes with a hidden price.

⚠ CONTAINS PSYCHOLOGICAL HORROR · ESTIMATED 10–15 MINUTES ⚠

☢ EXPERIMENT BRIEFING ☢

READ BEFORE PROCEEDING

📜 THE SITUATION

You are Subject 13 — the latest test subject in a classified experiment at Facility Omega. The facility has been abandoned for years, overrun by mutated former researchers who were exposed to extreme radiation during a containment breach.

At the heart of the facility lives The Radioactive Heart — a biological anomaly that fuses organic tissue with radioactive energy. It is sentient. It is hungry. And it has chosen you.

Your only way out may be to feed it — but survivors have warned that the Heart's generosity always has a motive.

🎮 CORE GAMEPLAY LOOP

1️⃣ EXPLORE — Move through the facility collecting radioactive materials. Rarer samples are hidden deeper in dangerous zones.

2️⃣ RETURN — Bring materials back to the Heart Chamber (the green starting room). Press [E] to open the feeding menu.

3️⃣ FEED — Each feeding satisfies the Heart and unlocks an upgrade. Feed it 5 times to reach the finale.

4️⃣ SURVIVE — Manage health, radiation, and stamina. Avoid mutants. Decide whether to go deeper for better loot — or play it safe.

☢ RADIOACTIVE MATERIALS

☢ Green CoreSafe Zones — Common ore near the base. Low risk, low reward.

🔶 Orange RodMid Facility — Moderate radioactivity. Requires deeper exploration.

💜 Purple CrystalDark Zones — Highly radioactive. Found in pitch-black corridors.

♦ Red CoreDeep Dark — Extremely dangerous. The Heart craves these most.

⚠ HAZARDS & THREATS

🧟 Mutants — Former human researchers, mutated beyond recognition. They patrol the facility and will chase on sight. Red eyes = danger.

☢ Radiation Floors — Orange-tinted zones that poison you over time. Move through quickly or unlock Rad Immunity first.

🌑 Dark Zones — Near-zero visibility. Extremely dangerous without Night Vision. Materials here are worth the risk.

👤 NPC Survivors — Other experiments still wandering the facility. Approach and press [E] to hear their warnings and lore.

🎮 CONTROLS

W A S DMove Mouse / ←→Look / Turn EInteract / Feed Heart / Talk to NPCs ShiftSprint (drains Stamina) ClickLock mouse cursor for free-look EscClose menus

⚠ The Heart will speak to you throughout the game. Listen carefully — but don't trust everything it says.
Gameplay length: approximately 10–15 minutes.

The Radioactive Heart

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