Screenshots
Watch trailer on Steam ↗Sphenoid
Kileka Games · Published by Kileka Games
Content notice: This game contains psychological horror elements, explicit violence, and graphic gore. Some scenes may be disturbing or unsettling to players.
Positive — 83% positive (36 reviews) · 14 achievements
Last updated 6 Oct 2026
Sphenoid is a first-person horror escape game set in a dark, oppressive prison. Explore, uncover clues, solve challenging puzzles, and survive the terrifying secrets that lurk around every corner.
£1.85
£9.29Lowest price we've ever recorded
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Price history
Adventure · 2025 · More under £5 games
Delve into Sphenoid, where you explore a dark, oppressive prison, piecing together clues and solving puzzles to evade the terrifying secrets that await.
About this game
You wake up in your cell on the same night The Warlock is executed in the electric chair. Before dying, he said he would take everyone with him… except the one who had this strange object. Did he keep his promise? Will you survive the horrors unleashed after his death?
Sphenoid is a horror escape room game set in a prison full of secrets. Solve puzzles, find clues, and discover what happened to the other prisoners.
The game combines dark, oppressive atmosphere, challenging puzzles, and an immersive story. Every corner of the prison hides secrets… and dangers that will test your wits and courage.
Features:
Expertly designed puzzles: Every challenge is logical, satisfying, and challenging.
Exploration and discovery: Roam the prison, open cells, access secret areas, and find hidden clues.
Immersive story: Uncover what happened to the other prisoners and unravel the mysteries of the prison.
Terrifying atmosphere: Flickering lights, haunting shadows, and eerie sounds create constant tension.
Explore the prison
Find objects and clues
Solve puzzles
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel Core I5-8400 / AMD Ryzen 3 3300X
- Memory: 8 GB RAM
- Graphics: GTX 970 / AMD Radeon RX 580
- DirectX: Version 11
- Storage: 5 GB available space
Recommended
- OS: Windows 10
- Processor: Intel Core I7-8700K / AMD Ryzen 5 3600X
- Memory: 16 GB RAM
- Graphics: GTX 1070 / RX 5600-XT
- DirectX: Version 11
- Storage: 5 GB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
Psychological Horror Puzzle Collection - A Bundle of Mind-Bending Nightmares
Step into the Psychological Horror Puzzle Collection, a collaborative Steam bundle featuring six atmospheric indie titles built around fear, mystery, and mind-bending puzzles.This unique collection brings together:Sphenoid - claustrophobic escape-room horror in shifting, surreal spaces.Phobic Nightmares - distorted fears come to life as you navigate oppressive environments.Netbreak - a digital descent into paranoia, glitches, and cryptic puzzles.Lucid Dreams - dreamlike horror where reality fractures with every step.No Vacancy Tonight - explore a cursed motel filled with secrets and creeping dread.Escape Floor 13 - survive a twisted building of escalating puzzles and psychological tension.Each game delivers a different flavor of first-person horror, all rooted in atmosphere, exploration, and clever puzzle progression-without relying on combat.Celebrate the creators behind these worlds and dive into a collection crafted for fans of slow-burn terror and immersive storytelling-with a 20% discount.Read full article on Community Announcements (kilekagames)Patch NotesOfficial
🌀 Sphenoid Update – DirectX Compatibility, Improved Camera & Better Performance
A new Sphenoid update arrives, focused on improving stability, performance, and visual quality — as well as fixing a critical error affecting some players without DirectX 12 support. 🧭 Main Improvements 💻 DirectX Compatibility Fix A critical bug causing the game to crash on systems without full DirectX support has been fixed. The game now properly detects system configuration and can run smoothly on more setups. 🧩 Puzzle interaction fix Fixed an issue that prevented proper interaction with certain puzzles, improving player action detection and responsiveness. 🎥 Camera Transition Fixes During Animations Camera transitions are now smooth and consistent, removing sudden jumps during certain animations. ⚙️ Performance Improvements Several internal processes have been optimized to reduce stuttering and improve overall smoothness, especially in areas with heavy effects or complex geometry. 🌌 General Visual Enhancements Adjusted materials, lighting, and post-processing for a more immersive and cohesive atmosphere. 💡 Lighting Fix on Low and Medium Qualities Shadows and lights now behave correctly across all graphic settings, removing overlit or inconsistent zones. ❌ Fully Clickable Close Icon Fixed an issue that prevented closing menus when clicking on the edges of the close icon. 🪶 Improved 3D Models New details and materials enhance their appearance and readability in the environment. ⚡ In Summary This version strengthens stability, improves system compatibility, smooths gameplay, and raises the visual standard of Sphenoid. Thank you for your continued feedback and support 💜 See you in the prison! — Kileka GamesRead full article on Community Announcements (kilekagames)AnnouncementsOfficial
Complete Sphenoid Guide – Walkthrough and All Puzzle Solutions
Welcome to the ultimate Sphenoid guide, a full walkthrough covering every chapter of the game: from the first hidden objects in the cell to the final exit. In this guide you’ll find:✅ Detailed solutions for all puzzles (codes, lever sequences, rune combinations, etc.).🗝️ Locations of key items and every element needed to progress.👉 Available now in the Steam Guides section.Guide link:Read full article on Community Announcements (kilekagames)Patch NotesOfficial
Update 1.0.1 - Subtitles Fix, Crash Bug Resolved & New Chapter Objectives
Fixed an issue where subtitles were not showing correctly in languages other than English.Fixed a crash that occurred when approaching the right wall after leaving the protagonist’s cell.Added Chapter and Objective indicators to improve player guidance and make it clearer what to do next.👉 Thanks to everyone who has shared feedback with us. These improvements come directly from your reports. If you find more issues or have suggestions, please let us know in the Steam forums:https://steamcommunity.com/app/3533010/discussions/Read full article on Community Announcements (kilekagames)
