Demon Core

Demon Core

Great Ganba · October 11, 2024 · Psychological Horror, Survival Horror, Horror, Exploration, Supernatural

Demon Core is free to play — no purchase needed. We track it so you know if that ever changes.

PC
Mostly Positive78% · 18
This game is free to play. Get it on Steam →

Screenshots

Demon Core price

Demon Core is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Demon Core

✦ AI summary

Demon Core traps you in an abandoned nuclear power plant where you must navigate deadly radiation and a terrifying creature using only your map and geiger counter. This atmospheric horror experience relies on tension and dread rather than combat, forcing you to outsmart an intelligent predator stalking the irradiated corridors.

Abandon hope and delve into the core of an old nuclear power plant in this psychological survival horror experience. You must trust your map and radiation detector to navigate the bowels of the irradiated plant... And be forced to discover the monstrous cause of its sudden reawakening.
There are no waypoints. Navigating the plant's interior is up to you.

Demon Core is a short and intense semi-linear horror experience, focusing on atmosphere and player skill to provide a good scare.
Confined in your radiation suit, there's no parkour chase sequences - only tension and release.
Areas of the plant are heavily irradiated and nuclear waste litters the corridors. Pay attention to your geiger counter and plan your route to survive.

Core Design

  • Player Skill: No waypoints, navigation and survival relies on a paper map and geiger counter.
  • Atmosphere: Detailed visuals, immersive sound design and frightening lore make the plant come to life.
  • Stalking Horror: Something intelligent and highly irradiated stalks the plant... combat or escape is not an option.
Confront the source of the horror confined in the bowels of Gray Bay

Warning
The game contains intense graphic imagery, death, and frequent frightening elements.

Demon Core — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Jul 14, 2025
⠀
8 found this helpful
Recommended Mar 28, 2026
https://youtube.com/watch?v=Cke_3xZTylU&list=RDCke_3xZTylU&start_radio=1&pp=ygUSU21hY2sgbXkgYml0Y2ggdXAgoAcB
1 found this helpful
Not recommended Sep 16, 2026
Unpolished, janky, runs like poop even on the lowest setting. Another generic unoptimized unreal engine horror game.
Recommended Sep 4, 2026
Demon Core is a short horror game that I found genuinely tense because it makes navigation part of the fear. I enter an abandoned nuclear power plant wearing a radiation suit, carrying a map and a radiation detector while something dangerous moves through the facility. I really liked that I am not given convenient waypoints telling me exactly where to go. The map and radiation detector are the heart of the gameplay. I have to figure out the layout myself while watching the radiation levels around me and deciding which routes are safe enough to take. I enjoyed this because it makes exploration feel like an actual survival problem. Getting lost is not just inconvenient because I also have to worry about what might be waiting nearby. The creature also works well because I cannot simply fight my way through the facility. The focus is on surviving and finding a route through the plant rather than turning the game into a traditional action horror experience. I liked that choice because it keeps the tension high whenever I hear something nearby. The atmosphere is easily the strongest part of Demon Core. The abandoned nuclear plant, radioactive corridors and disturbing scenery create a …
Recommended Feb 1, 2026
great game i have played it 90000000000000000000000000000 times
Recommended Jun 20, 2025
this is a really fun and scary game and i would recommend trying it

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