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About The Mound: Omen of Cthulhu
The Mound: Omen of Cthulhu drops up to four players into a hostile jungle where Lovecraftian horrors warp reality. A deep madness system blurs perception, turning every encounter into a psychological threat.
Players sign contracts aboard a galleon, split gear, and choose jungle sectors to explore. Deeper forays reveal abandoned forts, logbooks, and the legendary Mound, promising unimaginable riches.
01 / THE GUIDE
Co‑op Expedition
Up to four players can join a single expedition, sharing weapons and equipment as they venture into the cursed jungle. Coordination is essential because threats are unpredictable and can distort senses.
The galleon serves as a hub where players sign contracts with the captain, trading future treasure for gear before each sortie. This shared preparation influences how far the party can safely travel.
- Discuss gear distribution before departing to cover a range of combat and utility needs.
- Use the contract system to balance risk versus reward for each expedition.
02 / THE GUIDE
Madness System
Inspired by H.P. Lovecraft, the game features a madness system that alters perception. Unpredictable threats can blur reality, making it hard to trust what you see or hear.
As madness builds, paranoia spreads within the group, affecting decision‑making and cooperation. Players must stay aware that sensory information may be unreliable.
- Keep communication clear; verify observations with teammates.
- Watch for sudden changes in audio or visual cues that may signal madness effects.

03 / THE GUIDE
Jungle Exploration
Exploration is divided into selectable areas of the jungle, each presenting greater danger the farther you travel. The environment hosts strange creatures and mind‑bending phenomena.
Abandoned forts can be discovered during these forays. Recovering their logbooks unlocks them as new starting points for future expeditions, expanding the map’s usable locations.
- Map out your intended route before entering a new sector.
- Prioritize locating forts early to gain additional starting options.
04 / THE GUIDE
Spatialized Voice Chat
While on the mainland, players rely on spatialized voice chat to coordinate against threats. The audio system helps locate teammates and identify danger based on sound direction.
Effective use of voice cues can compensate for the madness‑induced visual distortions, allowing the party to react to unseen hazards.
- Speak clearly and use positional cues when describing enemy locations.
- Adjust volume settings to ensure you can hear subtle environmental sounds.
05 / THE GUIDE
Platform and Controller Support
The game runs on Windows and offers full controller support, including DualShock and DualSense compatibility. Additional accessibility options such as subtitle and custom volume controls are provided.
Steam features like achievements, trading cards, and cloud saves are also available, enhancing the overall experience without affecting core gameplay.
- Test both controller types to see which feels more comfortable for your play style.
- Enable subtitle options if the madness system makes audio cues hard to interpret.





COMMUNITY
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