Autophobia

Autophobia represents an anxiety disorder that causes extreme fear of being alone.
Access to the Backrooms
The Autophobia modification adds the endless expanses of the Backrooms to your world - a mysterious place existing beyond ordinary reality. You can accidentally fall into this zone at any moment: just stumble or take damage from mobs.
Warning: Although the chance of randomly ending up in the Backrooms is small, it does exist. Be cautious of falls and creature attacks, as random adversity might send you to places that are difficult to escape.
Exploration Features
Exploration is the key to salvation! In the Backrooms, you'll encounter hundreds of different rooms and hidden secrets. Carefully study your surroundings - in some rooms you can find clues helping to locate the exit. Specifically, pay close attention to the floor - sometimes important directions are hidden there.
Current status: The modification is in beta version and may contain some bugs. However, development is actively continuing, and regular updates with new content are expected in the future.