Screenshots
Watch trailer on Steam ↗Demon Core
Great Ganba · Published by Great Ganba
Content notice: This is a horror game which contains scenes intended to scare the player, including jumpscares and loud noises. Scenery within the game contains disturbing imagery such as blood stains or corpses. The game contains depictions of suicide The game contains references to occult rituals The game contains a character with severe full-body wounds, this character has no clothes but has no sexually explicit body parts either.
Mostly Positive — 78% positive (18 reviews)
Last updated 28 Sept 2026
Abandon hope and delve into the core of an old nuclear power plant in this psychological survival horror experience. Trust your map and radiation detector to navigate the irradiated plant... And be forced to discover the monstrous cause of its sudden reawakening.
Action, Adventure, Indie, Free To Play · 2024 · More free games
Abandon hope and navigate the ruins of Demon Core, using your map and radiation detector to uncover horrors within. Trust your instincts as you face the monstrous cause of the plant's reawakening.
About this game
Going Free
This is a notification to let you know Demon Core will be free to play shortly.
If you were planning on buying the game, you may wish to wait a few weeks and download it for free.
About the Game
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.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: 10
- Processor: AMD Ryzen 5 3600 or equivalent
- Graphics: Radeon RX580-series or equivalent
- DirectX: Version 11
- Storage: 4 GB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Update notes for October 21st
Patch 1.1.0 adresses a few issues found in the first month of Demon Core's life. Replaced missing wall to prevent the player from falling into the endless void beneath Gray Bay. Prevented a sequence break which might have caused issues if performed accidentally. Camera sequence on being captured improved. Blocked unintended line of sight to a separate area in Access Control section. Prolonged ending cutscene a tad.Read full article on Community Announcements (greatganba)
