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!

・Explore the Map

Search for clues to break the curse as you travel around the island.

Keep an eye on your hunger level—it decreases with each move and can impact your dice rolls.

・Solve Mysteries

Unravel cryptic notes and solve puzzles to uncover the island’s hidden truths.

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.

For the Mac version, right-click on Jukashima.app and select "Show Package Contents." Then, place the images in Contents/Resources/Data/StreamingAssets/player.

Japanese, English

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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","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

","mac_requirements",{"_217":223},"Minimum:

Requires an Apple processor
OS: macOS 12 or newer
Processor: Apple M1
Memory: 8 GB RAM
Storage: 3 GB available space

","short_description","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!","linux_requirements",[],"content_descriptors",{"_230":231,"_232":233},"ids",[99,133],"notes","*The game contains some gory scenes.","supported_languages","English, Japanese","detailed_description","

Just Updated

We’ve added new gameplay features and convenient functions in this Complete Edition Update!

・Cryptic Notes

・Enhanced Visual Effects

The features below are also added,

experience an enhanced and more engaging version of "The Isle of Ubohoth"—we hope you enjoy it!

・Harasho’s Journal

・Puzzles

・Success Rate Control

・Various Other Improvements

Additional Feature Update!

The following functions have been added in response to many requests.

▼ Skip Function(Function changed from fast forward to skip)

▼ Ending List

About the Game

・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

・Explore the Map

Search for clues to break the curse as you travel around the island.

Keep an eye on your hunger level—it decreases with each move and can impact your dice rolls.

・Solve Mysteries

Unravel cryptic notes and solve puzzles to uncover the island’s hidden truths.

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.

For the Mac version, right-click on Jukashima.app and select "Show Package Contents." Then, place the images in Contents/Resources/Data/StreamingAssets/player.

Japanese, English

","latest_result",{"_240":-5,"_241":242,"_310":311,"_318":319,"_320":321},"emotionsSummary","gameInfo",{"_243":244,"_251":252,"_260":261},"usage",{"_245":246,"_247":248,"_249":250},"totalTokens",5469,"promptTokens",4682,"completionTokens",787,"gameCategories",[253,254,34,255,256,257,258,259],"Visual Novel","Narrative Adventure","Dice-based Gameplay","Exploration","Puzzle Solving","Character Customization","Atmospheric Horror","mostRequestedFeatures",[262,269,273,276,279,283,287,291,295,298,302,306],{"_263":264,"_265":266,"_267":268},"point","Bug fixes","importance",0.95,"explanation","Players frequently report various bugs that lead to lost progress or bad endings, making bug fixes a critical request for a stable experience.",{"_263":270,"_265":271,"_267":272},"Full voice acting",0.9,"Reviewers desire more extensive voice acting beyond limited sections, suggesting that full voice acting would enhance immersion.",{"_263":274,"_265":271,"_267":275},"Manual save option","Players express frustration over the lack of manual saving options and wish for the ability to save their progress at any point.",{"_263":277,"_265":271,"_267":278},"Improved autosave system","Issues with the existing autosave feature, including lost progress, lead to requests for a more reliable and improved autosave system.",{"_263":280,"_265":281,"_267":282},"More intuitive game system and UI",0.7,"The game's user interface and overall system are described as rudimentary and unintuitive, prompting requests for a more refined and user-friendly design.",{"_263":284,"_265":285,"_267":286},"Branching path chart or progress tracking system",0.65,"Players find it difficult to track obscure branching paths and progress, requesting a chart, branch system, or general progress tracking to aid in understanding the narrative and achieving different endings.",{"_263":288,"_265":289,"_267":290},"Archive file or log",0.6,"The absence of an archive file or log is noted as a missing feature from previous installments, indicating a desire to review past dialogue and events.",{"_263":292,"_265":293,"_267":294},"Improved dice visibility",0.3,"Players report that the dice in the game are difficult to distinguish, suggesting a need for improved visual clarity for the dice rolls.",{"_263":296,"_265":293,"_267":297},"Fairer dice roll mechanics","Some players feel that the dice roll outcomes are unfair, consistently exceeding required values, leading to a request for fairer mechanics.",{"_263":299,"_265":300,"_267":301},"Improved controls including keyboard support",0.15,"The game's controls are described as tedious, with a specific lack of keyboard support, prompting requests for more intuitive controls and keyboard functionality.",{"_263":303,"_265":304,"_267":305},"Resolution and display settings",0.2,"The game lacks basic display options such as resolution adjustment and the ability to switch between windowed and full-screen modes.",{"_263":307,"_265":308,"_267":309},"Hints for puzzles",0.11,"Players find some word puzzles overly difficult due to the absence of hints, indicating a desire for in-game assistance.","summary",[312,313,314,315,316,317],"Appealing art style and engaging story.","Well-developed and likeable characters enhance experience.","Expanded TRPG experience.","Technical issues and design flaws impact gameplay.","Downgraded features compared to previous installments.","Rushed story and unsatisfying endings.","result_at",["D",1746533297975],"result_stats",{"_322":323,"_324":325,"_335":149,"_336":337,"_338":339,"_340":112,"_341":323},"totalReviews",26,"featureCounts",{"_326":141,"_327":328,"_329":330,"_331":332,"_333":133,"_334":323},"miscPoints","gameplayPoints",33,"negativePoints",90,"positivePoints",58,"performancePoints","recommendationPoints","totalNegative","totalPositive",16,"totalHelpfulReviews",25,"totalProtestReviews","totalFilteredReviews","results",[239],"queue","game_category",[347,349,351,353,355,357,359,361],{"_25":348,"_12":253},"a58c196f-def1-4fb5-ba5a-fc609fca08da",{"_25":350,"_12":254},"3832d69c-0df0-4554-8782-a7870d5ef32d",{"_25":352,"_12":34},"63e82233-f9ba-4329-8268-84ea2b01b5e9",{"_25":354,"_12":255},"85eb41bd-7574-4e29-8cc4-afeb2a55be2a",{"_25":356,"_12":256},"1bcbd065-9d24-4f95-a4fa-d71f93bed139",{"_25":358,"_12":257},"77e904fa-a9df-4a03-8a50-05e1678f4d66",{"_25":360,"_12":258},"714d0b93-9f81-4c2a-8242-81940e58211c",{"_25":362,"_12":259},"f63b01fb-6cd2-46b8-8333-1b932993fd55","jsonLd",{"_365":366,"_367":368,"_369":370,"_389":390,"_392":393,"_397":398,"_399":400,"_401":402,"_403":404},"@context","https://schema.org","@type","Review","itemReviewed",{"_367":371,"_12":13,"_372":373,"_165":374,"_375":376,"_377":378,"_379":380},"VideoGame","image","https://vaporlens.app/og-image/2701590","https://vaporlens.app/app/2701590/cthulhu_mythos_adv_the_isle_of_ubohoth","gamePlatform","PC (Steam)","genre","Video Game","aggregateRating",{"_367":381,"_382":383,"_384":385,"_386":112,"_387":339,"_388":339},"AggregateRating","ratingValue",64,"bestRating",100,"worstRating","ratingCount","reviewCount","reviewRating",{"_367":391,"_382":383,"_384":385,"_386":112},"Rating","author",{"_367":394,"_12":395,"_165":396},"Organization","VaporLens","https://vaporlens.app","reviewBody","Appealing art style and engaging story.\nWell-developed and likeable characters enhance experience.\nExpanded TRPG experience.\nTechnical issues and design flaws impact gameplay.\nDowngraded features compared to previous installments.\nRushed story and unsatisfying endings.","datePublished","2025-05-05","dateModified","2025-05-06","publisher",{"_367":394,"_12":395,"_165":396},"actionData","errors"]