Your descent into madness has only just begun. With Cthulhu: The Cosmic Abyss - R'lyeh Edition, horror reaches new dimensions. Enhance your experience with the following exclusive content:

- The Shining Trapezohedron side quest: search for fragments of the shining trapezohedron and learn more about this ancient artefact through puzzles that will test your perception and your sanity. As a reward, unlock an exclusive evolution that gets better as you put the artefact back together. Also, discover an exclusive hand skin imbued with the red stone, which reacts every time you approach a fragment.

- An official scenario for the Arkham Horror role-playing game: extend the adventure with a full, exclusive scenario entitled ""Descent"". Designed for the popular Arkham Horror tabletop role-playing game, you and your friends can play as new Ancile investigators facing an occult threat directly linked to the game's universe.

- The non-Euclidean artbook: from the depths of the Pacific Ocean to the Cyclopean ruins of R’lyeh, discover the official artbook for Cthulhu: The Cosmic Abyss, with more than 50 pages featuring intertwining oppressive environments, Lovecraftian creatures and Ancile technologies. An artistic journey into the heart of a world where beauty merges with terror, and the abyss is always watching you.

- The Eldricht Soundtrack: with more than an hour of music, immerse yourself in the soundscape of Cthulhu: The Cosmic Abyss. From the oppressive layers of the ocean depths to the more subdued, melancholic themes of exploration, each composition accompanies your descent into the unknown, increasing the feeling of tension, isolation and insignificance in the face of cosmic horror. An original soundtrack, designed to be an auditory journey, where silence, anticipation and unspeakable menace are an integral part of the experience.