Insane Decay of Mind is a first person horror game. You play the role of Katherine, a young girl lost in the eerie hallways of a building she believes to be her school. As she begins to realise that this labyrinth that she has found herself in, is slowly warping her mind; She must make her escape in order to regain her freedom. But freedom comes at tremendous cost. Leaving the labyrinth is not as easy as it seems as you are not alone, there are entities that wish to keep you from escaping. During your dreadful experience, you will meet beings called "Shadows", manifestations of your worst nightmares; you will have to subdue them as you continue wandering the darkness that envelopes you and, perhaps, you will achieve your freedom.
But Why is the Game Named This?
Insanity is undoubtedly the main element: represented by the Shadow, it will encompass the entire story, haunt every frame, perhaps even disturb you own mind. It is from insanity, from foolishness, that the decay of mind begins. The only way to oppose this deterioration is to piece together the fragments of Katherine's story; they are hidden in the vast maze in which you find yourself, look for them very carefully.
windows Minimum
OS: Windows 7
Processor: Intel Core i5 4460 equivalent or greater
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GT 430 (no VR) or GTX 960 (VR) or AMD Radeon HD 5670 (no VR) or R9 290 (VR)
Storage: 10 GB available space
Directx: Version 11
Additional notes: Requires Oculus Rift DK2, Oculus Rift CV1, HTC Vive Pre or HTC Vive to work in VR
windows Recommended
OS: Windows 10
Processor: Intel Core i5 4590 equivalent or greater
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 750Ti (no VR) or GTX 980 (VR) or AMD Radeon R7 260 (no VR) or R9 290X (VR)
Storage: 10 GB available space
Directx: Version 11
Additional notes: Requires Oculus Rift DK2, Oculus Rift CV1, HTC Vive Pre or HTC Vive to work in VR
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-04-15
Complete Our Side Quest and Win
As you probably know, in a huge variety of game titles there are usually a lot of mainline task objectives, but very often there are multiple side quests that would advance you further in the gameplay. This is exactly why we decided to run a Side Quest promotion on our YUPLAY site. In order to participate in it you have to make an order over 20€ between 17.04.2026 18:10 CET and 20.04.2026 02:00 CET, and you will get a 1€ voucher for next purchase…
The Easter season is here and since we like this part of the year so much, we have made sure to have prepared a special YUPLAY promotional campaign for those of you that are ready to go into the Raid Party and grab a FREE gaming title. All you have to do is make an order above 20€ between 02.04.2026 15:00 CET and 08.04.2026 15:00 CET, and you will get a FREE game as ab Easter present from us…