異ノ故リ-Isolated Hours-

A 3D horror game where your only goal is to finish your work… and survive the night. Unnatural anomalies creep into the office as you complete your tasks. Can you make it to the end of your shift alive.

At a glance

• Platform: Windows.
• Genres: Casual, Indie, Free To Play.
• Release date: Dec 15, 2025.
• Steam user reviews: Very Positive (91% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

CDKeyCheap does not sell keys. We track and display prices; every purchase happens on the store you click through to.