Screenshots
Watch trailer on Steam ↗In Tenebris
Sleepless_Team · Published by Sleepless_Team
Content notice: The game contains profanity, as well as scenes depicting grotesque transformations of human and animal bodies (body horror)
Last updated 28 Sept 2026
In Tenebris is a dark, first-person sci-fi horror game where echolocation is the only way to find your way out. You see while you make sound, but you can also be heard by those you don't want to be around. Explore the corridors of a research facility, avoid enemies, and try to survive.
Action, Adventure, Indie, Free To Play · More free games
About this game
The protagonist wakes up in a research facility in an alternate reality, 1990s Russia. The operation went according to plan: his eyes are gone, replaced by an experimental implant. Now the world is a reflection of sound. However, everything is too quiet.
Use sound to see your surroundings.
Remember that every movement and sound has consequences.
Open locked areas, find keys, and uncover the dark secrets of the corporation that led to the disaster.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: 64-bit Windows 7
- Processor: Core i3 / AMD A6 2.4Ghz
- Graphics: NVIDIA GeForce GTX 260 / AMD Radeon HD 5750. OpenGL 3.3
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 10-11
- Processor: Intel Core i5-13600K / AMD Ryzen 5 7600X
- Graphics: Nvidia GeForce RTX 2060 / Radeon RX 5700
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Update 1.1.1 Beta Is Now Available
Thank you to everyone who played the game, participated in testing, reported bugs, and shared feedback. Your reports help us identify problems and continue improving the game.Main ChangesAudioAdded a dedicated audio settings menu.The volume of different sound categories can now be adjusted separately.Added a new ambient track.OptimizationGeneral project optimization has been carried out.Reduced the rendering workload.Optimized shaders and materials.Added further improvements aimed at increasing performance and stability.MonsterFixed several issues affecting the monster’s behavior.Changed the monster encounter script.Improved the monster’s hearing mechanics.While the monster is chasing or searching for the player, it can now be distracted by the sound of a thrown object.Gameplay MechanicsImproved the object grabbing and carrying system.Small objects should no longer swing excessively while being carried.The inscriptions on keys are now easier to understand.Changed the password for Ratnikov’s door.Bug FixesFixed several critical bugs.Added various other minor fixes and improvements.What’s NextIn the next update, we plan to add English and Chinese localization to In Tenebris.Thank you for supporting the game and helping us improve it. Please continue sharing your feedback and reporting any issues you encounter.Read full article on Community Announcements (sleeples******)AnnouncementsOfficial
In Tenebris Demo is Now Available
Unfortunately, English localization is not available in the current demo build yet. We are already working on it, and in the next few days we plan to release an update that will make the demo playable in English.This is a very important milestone for us. If you have already played the demo, please consider leaving a review on Steam or sharing your feedback in the discussions. It helps us understand what works well, what raises questions, and what should be improved as development continues.Thank you to everyone who waited, supported us, and followed the project.Sincerely,Sleepless TeamRead full article on Community Announcements (sleeples******)
