How to Download Cthulhu Mythos ADV 呪禍に沈む島

1. Click on the Cthulhu Mythos ADV 呪禍に沈む島 download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS *: Windows 7 / 8 / 8.1 / 10 / 11
  
• Processor: Intel Core2 Duo or better
  
• Memory: 4 GB RAM
  
• Graphics: Compatible OpenGL
  
• Storage: 500 MB available space

Recommended:

• OS *: Windows 7 / 8 / 8.1 / 10 / 11
  
• Processor: Intel Core2 Duo or better
  
• Memory: 4 GB RAM
  
• Graphics: Intel HD 615Graphics or better
  
• Storage: 500 MB available space

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

A horror dice roll adventure inspired by the Cthulhu Mythos. Much like in a tabletop RPG, "abilities," "luck," and "dice rolls" influence the story's progression. The protagonist is cursed on an island in the Seto Inland Sea. Investigate the island, uncover the mysteries, and break the curse!

On a mysterious island in the Seto Inland Sea, an urban legend tells that completing the "88 Temples Pilgrimage" will summon Kukai, who will grant your wish. Our protagonist, visiting this island, is suddenly cursed by an unknown entity, putting their life in jeopardy. Can they prevent the resurrection of an ancient evil god sealed on the island and break the curse?


・Player Stats and Appearance Customization

Answer questions to shape your protagonist’s stats.
Enjoy thrilling dice rolls with challenging stats, and for an added layer of immersion, you can even replace the protagonist’s image.

・Dice Roll Choices

In critical moments, the outcome of choices is determined by dice rolls. The success rate depends on the abilities of the protagonist and their companions. Sometimes, you will face scenes where you must succeed within a time limit!

・Effects of the Curse

As you explore the island, hunger triggers terrifying seizures and lowers your dice roll success rates. Beware the curse!

・Branching Storylines

The latter part of the story branches significantly based on the protagonist's sanity and bonds with other characters. Your decisions matter!


Hatsumi Amasawa CV:Mayu Mineda
A friend of the protagonist and a university student.
Cheerful and friendly with everyone, likely due to her good upbringing.
Has a fondness for occult content like horror and urban legends.


Reiji Kaga CV:Haruki Ishiya
A friend of the protagonist and a university student.
Although he excels academically, he postpones job hunting to focus on his hobbies and part-time jobs.
While his interests in horse racing and pachinko haven't yielded great results, his excellent memory and insight make him unbeatable at mahjong.


Hotaru Natsunagi CV:Yuki Tanaka
A girl living on the island.
Due to her frail health, she's never left the island and yearns for city life.
After an unexpected encounter with the protagonist, the wheel of fate for both her and the island begins to turn.


Yukitsune Saeki CV:Yuya Hirose
A young man living on the island.
Possesses mysterious powers and spends his days helping others.
Claims the protagonist is his "destined person," but his true intentions remain unclear.


Keiyū Natsunagi CV:Hidenobu Kiuchi
Hotaru’s father.



How to Change the Protagonist's Image
Steps to Update Player Image

1. Open the game's page on Steam.

2. Ensure the game is installed.

3. Click the gear icon on the right side of the screen and select "Manage," then "Browse Local Files." This will open the folder containing the game's files.

4. Place the images in the Jukashima_Data/StreamingAssets/player folder. Ensure the images adhere to the specified size and file naming conventions to be displayed correctly in the game.


Image Specifications
Size: 1920x1080 pixels
File Format: PNG with a transparent background
Number of Images: 11 (for different facial expressions)
File Names:
・tsujo.png
・odoroki.png
・kyouki.png
・hohoemi.png
・egao.png
・aseri.png
・hensou.png
・hensou_aseri.png
・ikari.png
・kanashimi.png
・fushin.png
Note: "hensou" is displayed during undercover investigations. Enjoy preparing your favorite disguise illustrations.


Japanese, English

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