Screenshots
Watch trailer on Steam ↗One Room Nightmare
RenKon · Published by RenKon
Very Positive — 82% positive (105 reviews) · 7 achievements
Last updated 28 Sept 2026
Turn-based strategy horror. Terror in a confined space. Manage your limited power and time to protect yourself from the oncoming enemies and survive until dawn.
Free to PlayDJCTQ 14
Free
Indie, Simulation, Free To Play, Strategy · 2024 · More free games
Navigate One Room Nightmare's tense turn-based battles as you manage resources and time against relentless enemies. Experience the thrill of survival in a confined, nightmarish environment designed by RenKon.
About this game
Seek the right answer amidst time's pause.
You find yourself trapped in a room in an apartment.
This room is home to a variety of monsters that are lurking and waiting for you.
Turn on lights, open and close doors, hide in the shadows... You have many options.
Identify the characteristics of the approaching enemy, manage power and time, and act appropriately.
If you make the wrong choice, you will be...
■Features
1. Turn-based system
Time stands still and the enemy does not act until you do.
Think carefully about what you should do next.
2. Research system
Observe enemy behavior to gain experience points.
Use these points to unlock new information and learn countermeasures.
3. Resource Management
This room power is not infinite.
Keep an eye on your remaining power and avoid blackouts.
■Controls
Left click: Interact
Right click: Open notebook
Move cursor to the edge of the screen: Move viewpoint
You find yourself trapped in a room in an apartment.
This room is home to a variety of monsters that are lurking and waiting for you.
Turn on lights, open and close doors, hide in the shadows... You have many options.
Identify the characteristics of the approaching enemy, manage power and time, and act appropriately.
If you make the wrong choice, you will be...
■Features
1. Turn-based system
Time stands still and the enemy does not act until you do.
Think carefully about what you should do next.
2. Research system
Observe enemy behavior to gain experience points.
Use these points to unlock new information and learn countermeasures.
3. Resource Management
This room power is not infinite.
Keep an eye on your remaining power and avoid blackouts.
■Controls
Left click: Interact
Right click: Open notebook
Move cursor to the edge of the screen: Move viewpoint
System Requirements
Will my PC run this? →Minimum
Minimum:
- Requires a 64-bit processor and operating system
- OS: Windows10/11
- Storage: 500 MB available space
Recommended
Recommended:
- Requires a 64-bit processor and operating system
Supported Languages
English, Japanese
Latest news
Patch NotesOfficial
version 1.1.2
Fixed unintended behavior of some enemiesRead full article on Community Announcements (RenKon)Patch NotesOfficial
version 1.1.1
Adjusted effects of surveillance cameras (easier to see) Changed some of the conditions for adding diariesRead full article on Community Announcements (RenKon)
