異ノ故リ-Isolated Hours-

First-person horror where office shutdown duties collide with supernatural disturbances

Byking RooKIES · Published by Byking Inc. · Released Dec 15, 2025

Reviews: Very Positive; 91% of 66
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 1 year ago; Sep 5, 2025
Minimum PC: GeForce GTX 960; 0 GB RAM · 0.6 GB disk; Full requirements

What is 異ノ故リ-Isolated Hours-?

A free, single-player horror game set in an office you must close before leaving. You switch off monitors, air conditioners, and lights throughout the building, deal with anomalous objects, and avoid approaching or making eye contact with a strange woman.

For you if...

+you prefer brief horror games over long campaigns

Not for you if...

−you prefer action-heavy games to walking and interacting with objects

What players say

91% of 66 reviews are positive

Players praise the office atmosphere and scares. Some criticize the slow movement and report performance issues.

Screenshots and trailer

異ノ故リ-Isolated Hours- system requirements

Minimum: GeForce GTX 960, 0 GB RAM, 0.6 GB of disk space.

As published by the developer.

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Minimum

OS: Windows10
Processor: Intel i7 3770
Graphics: GeForce GTX 960
Memory: 8 MB RAM
Storage: 600 MB available space

Does 異ノ故リ-Isolated Hours- have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does 異ノ故リ-Isolated Hours- run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Steam features: Family Sharing
Languages: Text only: English, Japanese.

Does 異ノ故リ-Isolated Hours- use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam