One Room Nightmare
Released Jun 2024
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.
81% positive · 102 reviews
Done
All announced content has been released
Medium confidence
Done
All announced content has been released
Medium confidence
Where to get it
Free on Steam
Evaluation
One Room Nightmare launched on June 7, 2024 as a free-to-play turn-based horror game. After release, the developer posted two small patches — a feature tweak on June 11, 2024 (adjusting camera visibility and diary conditions) and a bug fix on June 19, 2024 (fixing unintended enemy behavior). There have been no developer communications of any kind since June 19, 2024, now over two years ago. The game has no DLC listed, no announced future content, no roadmap, and no post-launch major updates. The store description presents the game as a complete experience with no mention of planned additions. Given the absence of any sustained post-launch content pattern, announced future content, or developer activity since mid-June 2024, the game appears to have launched as a finished product and received only minor post-launch polish before the developer went quiet.
Evidence
Version 1.1.2 bug fix for unintended enemy behavior — last known developer communication
Version 1.1.1 patch adjusting surveillance camera effects and diary unlock conditions — small feature tweak shortly after launch
Media
Details
Developer
Publisher
RenKon
Achievements
7
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
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
Are these done yet?
Last evaluated Jul 22, 2026
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