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88% positive of 35 · Positive · Live from Steam
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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!
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Review score: 88% on 2026-11-01 → 88% today (35 reviews)
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Korean Language Update for the First Title in the Series: “Cthulhu Mythos ADV Lunatic Whispers”We hope even more players will enjoy this unique “solo-play TRPG experience.”
We have fixed the following issues: ・On the map screen, if the player gives up on deciphering the ""mysterious letter,"" the spot detail screen may not display correctly. ・Opening the menu while reading a ""note"" can sometimes cause unintended behavior. ・On D…
We have fixed the following issues: ・The Bad End - "Mission Accomplished" occasionally failed to trigger, even when the necessary conditions were fulfilled. ・In cut-in scenes, the default protagonist image appeared instead of the designated illustration. ・The …
We’ve rolled out the Complete Edition Update, packed with new gameplay features and convenient functions! Whether you're a first-time player or someone who's already explored the game, the enhanced "Cthulhu Mythos ADV The Isle Of Ubohoth" experience offers eve…
We’ve rolled out the Complete Edition Update, packed with new gameplay features and convenient functions! Whether you're a first-time player or someone who's already explored the game, the enhanced "Cthulhu Mythos ADV The Isle Of Ubohoth" experience offers eve…
The following functions have been added in response to many requests. ▼ Skip Function The "Fast Forward" button at the bottom right of the screen has been updated to a "Skip" button. Clicking it will now instantly skip to the next choice or the start of the ne…
The Cthulhu Mythos ADV Series titles “Cthulhu Mythos ADV Lunatic Whispers” and “Cthulhu Mythos ADV The Isle Of Ubohoth”, along with the Cthulhu-mythos-inspired adventure “Cafe DReAMLAND”, are now available together in one bundle!It’s a perfect opportunity to g…
”Cthulhu Mythos ADV The Isle Of Ubohoth" is release by 2024/6/28(JST)!! ■About the ”Cthulhu Mythos ADV The Isle Of Ubohoth" A horror dice roll adventure inspired by the Cthulhu Mythos. Much like in a tabletop RPG, "abilities," "luck," and "dice rolls" influenc…
Guidelines for streaming of ”Cthulhu Mythos ADV The Isle Of Ubohoth" (6/27) -The entire game of "Cthulhu Mythos ADV: The Isle Of Ubohoth" can be streamed after launch, but please note that each streamer is only permitted to show one ending. *The ending will be…
Guidelines for streaming of Cthulhu Mythos ADV The Isle Of Ubohoth Demo (6/11) -The trial version of “Cthulhu Mythos ADV: The Island That Sinks Into Curse” will be available for installation from 6/10 10:00AM to 6/17 2:00AM(PST). -The story can be progressed t…
Not tested by Valve yet. Results from Valve's own testing.
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