Four-player Lovecraftian co-op in a cursed jungle where madness rewrites what you see
The Mound: Omen of Cthulhu Wiki
The Mound: Omen of Cthulhu is a first-person co-op horror game from ACE Team, published by Nacon and released on Steam on Jul 15, 2026 at $23.99 in the US, down from a $29.99 list price.
- Release
- Jul 15, 2026
- Platform
- Windows
- Achievements
- 25
5
Store screenshots
Plus 3 store trailers
25
Steam achievements
Listed on the store page
2
Content descriptors
Violence and gore
11
Languages listed
English has full audio
Media
Screenshots for The Mound: Omen of Cthulhu, taken from the official store listing — click any shot to enlarge.
Watch the The Mound: Omen of Cthulhu trailer — the trailer is published on the official store listing; the link opens that page (Open the Steam store page).
Screenshots and store text: official The Mound: Omen of Cthulhu Steam listing (ACE Team / Nacon).
3 trailers published on the Steam store page for The Mound: Omen of Cthulhu; the listing names them "Launch Trailer", "Gameplay Overview Trailer" and "Ready Your Expedition".
The Mound: Omen of Cthulhu guides
Every The Mound: Omen of Cthulhu page by section — 8 in total, each compiled from its listed sources.
About The Mound: Omen of Cthulhu
What the official store listing says about The Mound: Omen of Cthulhu — quoted facts, not our opinion.
The store text frames it as an expedition for up to four players into a cursed jungle: Lovecraftian horrors warp reality as madness closes in while the party searches for the riches buried within The Mound.
Its headline system is madness and altered perception. The listing says unpredictable threats distort your senses, blur the line between reality and illusion and sow paranoia within the group, until you can no longer trust what you see and what you hear.
Between expeditions the party returns to the galleon, signs a contract with the captain for gear, splits weapons and equipment, and picks the next stretch of jungle; abandoned forts can be recovered through their logbooks and unlocked as new starting points. The listing carries Steam content descriptors 2 and 5 with the note "This game features intense violence, blood and gore."
Source: the official store listing captured for this section (platforms shown: Windows). Full citation list on every page under this section.
Latest updates
Newest and refreshed pages in this section.
- The Mound: Omen of Cthulhu Achievements - All 25 and the Ten NamedIndex
- The Mound: Omen of Cthulhu Features - Co-op, Madness and RatingsPage
- The Mound: Omen of Cthulhu Gameplay - The Madness System and Expedition LoopGuide
- The Mound: Omen of Cthulhu Beginner Guide - Co-op, Madness and First StepsGuide
- The Mound: Omen of Cthulhu Platforms - Windows Build and Published SpecsPlatform
- The Mound: Omen of Cthulhu Cheat Sheet - Launch, Price and 25 AchievementsIndex
- The Mound: Omen of Cthulhu Release Date - Launch, Price and EditionsQ&A
- The Mound: Omen of Cthulhu System Requirements - Minimum and RecommendedPlatform
FAQ
Answers use only sourced facts; unverified items are marked.
- When was The Mound: Omen of Cthulhu released?
- The Steam store page lists Jul 15, 2026.
- How many players can join an expedition?
- The listing describes co-op for up to four players, and the store tags include Multi-player, Co-op and Online Co-op.
- How much does The Mound: Omen of Cthulhu cost?
- At capture the US price was $23.99, against a $29.99 list price (20% off). A Deluxe Edition was listed at $39.99, $31.99 at capture.
- What platforms is The Mound: Omen of Cthulhu on?
- The store listing lists a Windows build only; no macOS or Linux build is published.
- Why is The Mound: Omen of Cthulhu rated 18?
- The listing carries Steam content descriptors 2 and 5 with the note "This game features intense violence, blood and gore", plus region ratings of 18 from USK, PEGI and DEJUS.
Ready to start The Mound: Omen of Cthulhu?
Read the beginner guide first, then pick the platform that fits how you play.
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