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"A nightmare, again..." The high school student who developed all by himself aka KENGOHAZARD, becoming topic of conversations, is doing a remake from scratch! Explore a mansion full of dreadful monsters roaming about, search for keys, and try to escape while striking back with guns!
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Release Date:
2021 Summer Demo Coming Soon...

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Early Access Game

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Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“This game is still incomplete, and there are a lot of problems
It was decided that a full release should not come out in this state
In addition, we judge that the game will not grow unless we hear the impressions of the actual players.
(Machine translation)”

Approximately how long will this game be in Early Access?

“Between one and five months are planned”

How is the full version planned to differ from the Early Access version?

“・Endings appendix
・Steam achievements appendix
・Extra contens appendix
・Weapons appendix”

What is the current state of the Early Access version?

“What is listed on the Steam store page is playable
You've reached the BAD END without issues
(Machine translation)”

Will the game be priced differently during and after Early Access?

“Price may increase moderately when we release”

How are you planning on involving the Community in your development process?

“Please use the Steam community thread
A thread for localization into any language is planned”
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Planned Release Date: 2021 Summer Demo Coming Soon...

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About This Game

■What's QuietMansion1(QuietMansion Remake)?
"QuietMansion Remake" is the reconstruction of the game, that was distributed in 2018 under "KENGOHAZARD",
with all the contemporary technology and skills
All levels are completely new in order to give the impression of a completely different game

■Full support of 4K HDR
QuietMansion Remake features full support of 4K HDR
Compatibility with 16bit HDR implements a gorgeous presentation that goes beyond usual HDR
Enjoy a different dimension of graphics!

■An evolved image production
Thanks to the success of crowd funding the developer was able to obtain a high-end PC
"Heavy productions and effects that could not be used until now" can now be used freely
An overwhelming image beauty has been realised

■An evolved sound system
Real Sound Effect(RSE) was experimentally introduced to previous works, and received extraordinarily high ratings
Now it's evolved to Enhance Real Sound Effect(ERSE)
Horror productions that featured 3D Space Audio were able to be transformed into completely new horror experiences

■The student's last work
At the time QuietMansion Remake was released, I was finding employment
Even the game development that started out as KENGOHAZARD ends once...
This is the last release of the developer who started out in high school
Please enjoy!

  • Title QuietMansion1(QuietMansion Remake)
  • Genre First-Person Horror Adventure
  • Age Target None (in the future CERO rating planned)
  • Distribution Permission Full (This game may be streamed individually or commercially)

Translator:Richard Lenerz
Special Thanks:Tobias Nitsch & Steve Russell

Mature Content Description

The developers describe the content like this:

Includes blood and some grotesque expressions

System Requirements

    • Requires a 64-bit processor and operating system
    • OS: Windows8.1
    • Processor: Intel® Core™ i3/AMD Ryzen™
    • Memory: 4 GB RAM
    • Graphics: Intel® HD Graphics 4000(HD)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 3 GB available space
    • Additional Notes: You can also play on laptop
    • Requires a 64-bit processor and operating system
    • OS: Windows10
    • Processor: Intel® Core™ i5/AMD Ryzen™
    • Memory: 8 GB RAM
    • Graphics: GeForce® RTX 2060(4K HDR)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 3 GB available space
    • Additional Notes: You can feel more realistic by using earphones or headphones

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