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About Cthulhu: The Cosmic Abyss

It’s 2053, and weird events are happening worldwide as resources run out. Big companies mine the deep ocean, accidentally waking an ancient terror. You are an investigator sent to find out why the mines have gone silent. Challenge your intellect and confront dangers that test both your reason and mental stability.

• Take on the role of Noah, exploring a submerged city in search of the miners. Unravel enigmas while combating the insanity that is spreading throughout R’lyeh.
• Confront dreadful creatures from tales of cosmic terror. Delving further into the submerged ruins increases the pressure on your mind.
• Tackle complex puzzles alongside your AI partner, Key. Gather evidence, reveal mysteries, and decide the direction of the inquiry.
• Your decisions in this first-person horror game affect the conclusion of the story. You are employed by a covert police force tasked with managing supernatural incidents.

Cthulhu The Cosmic Abyss Reviews

As a relative noob to Cthulhu’s lore, I really loved Cthulhu: The Cosmic Abyss because of its more psychological horror nature. It would be easy to make this into a monster blasting, shooter type but the choice to slow things down, and tell a more methodical story was a great thing.

ZTGD

I enjoyed Cthulhu: The Cosmic Abyss, particularly the striking visuals and high production values. The detective elements introduce some impressive new mechanics that make for a highly thoughtful gameplay experience.

TheXboxHub

The kind of cosmic horror that makes you ponder your place in the universe.

Impulsegamer

CTHULHU THE COSMIC ABYSS Editions

CTHULHU THE COSMIC ABYSS R’LYEH EDITION/DELUXE

Inside this edition, you will find the complete base adventure alongside extra content packs, an additional mission, and a new scenario:

• Cthulhu: The Cosmic Abyss – Base Game
• Cthulhu: The Cosmic Abyss – Shining Trapezohedron Quest
• Cthulhu: The Cosmic Abyss – Non-Euclidean Artbook
• Cthulhu: The Cosmic Abyss – Exclusive Arkham Horror TTRPG Scenario

This game may require a subscription to Xbox Live Microsoft.

Compare our different subscription prices by visiting our Xbox Live subscription catalog.

CTHULHU: THE COSMIC ABYSS SANITY SKIN PACK

Enter a world of madness with the Sanity Skin Pack, offering bold and striking new looks.

• UI touched by Cthulhu, showing mind’s slow collapse.
• Noah’s hand skin shifts as madness spreads across him.
• Torch and sonar gain new themed customization options.

CTHULHU: THE COSMIC ABYSS R’LYEH EDITION UPGRADE

The fall into madness starts now with cosmic horror and exclusive R’lyeh Edition content.

• Cthulhu: The Cosmic Abyss – Eldritch Soundtrack
• Cthulhu: The Cosmic Abyss – Shining Trapezohedron Quest
• Cthulhu: The Cosmic Abyss – Non-Euclidean Artbook
• Cthulhu: The Cosmic Abyss – Exclusive Arkham Horror TTRPG Scenario

• 4m

  Cthulhu: The Cosmic Abyss' free Steam Next Fest demo has detective investigation so detailed it threatens to unravel my mind

  
• 4m

  Cthulhu: The Cosmic Abyss Still Needs More Danger in its Undersea Horror | IGN Preview

  
• 8m

  Cthulhu: The Cosmic Abyss gropingly squeezes its gelatinous green immensity onto PC in April 2026

  
• 1y

  Cthulhu The Cosmic Abyss is a new investigative horror game channeling Outlast