When you step under the oppressive, cursed canopy of The Mound: Omen of Cthulhu, you will encounter physical horrors, shifting terrain, and deadly traps. But as you venture deeper, you’ll quickly realize that the most dangerous entity in this conquistador-era cosmic horror isn’t lurking in the bushes.
It’s sitting right between your ears.
In The Mound, your own mind is the ultimate antagonist, actively working to sabotage your survival.
The silent sabotage of your senses
In many horror games, “sanity” is just a stat (a flashing red bar or a blurred screen that tells you when your character is scared). We wanted to create something far more insidious. In our game, there is no HUD, no warning sirens, and no UI indicators to tell you that you are losing your grip.
Instead, the game quietly gaslights you. It seamlessly alters the environment to match your decaying mental state, tricking your brain into processing illusions as absolute facts. Because there are no UI cues, you have no way of knowing your mind has turned against you until the damage is already done.
For instance, as your sanity slips, the jungle might begin to bleed. You could find yourself drenched in a localized, terrifying rain of blood that your healthy-minded teammates can’t see. Even more dangerous are the auditory hallucinations. Your brain might fabricate a distant, comforting horn call: the classic signal of a safe extraction or a teammate in need. Believing it is real, you follow the sound into the dark, only to realize too late that your own mind lured you directly into a deadly ambush.
Even worse, your mind can turn you into a danger to your own crew. Under intense psychological pressure, your teammates’ character models will seamlessly warp into shambling, undead monstrosities. In the middle of a chaotic battle, you might turn around, panic, and empty your flintlock into a terrifying beast, only to realize too late that you’ve just shot your best friend in the back.
Co-op: Your only reality check
This psychological warfare is precisely why The Mound was designed from the ground up to be experienced in co-op.
When you can no longer trust your own eyes, your teammates stop being just extra firepower as they become your only anchor to reality. They are your sanity meter.
To survive, you have to weaponize your communication. You will find yourself constantly asking your squad: “Are those bushes moving, or is it just me?” or “Did you hear that horn, or is it just me?” If a player’s mind completely fractures, they have to surrender control of their perception and rely entirely on their crew to guide them, ground them, and confirm what is real. You aren’t just fighting monsters together; you are helping each other fight your own brains.
Arm your mind on XBOX soon
Are you ready to find out if you can trust your eyes, and your friends? The Mound: Omen of Cthulhu launches on July 15, 2026.
By pre-ordering now on XBOX, you will unlock the exclusive Lost Explorers’ Swords Pack, giving your squad a sleek, thematic edge before you even set foot in the jungle. Even better, XBOX Game Pass members can take advantage of a special pre-order discount right now.
Gather your crew, check your gear, and prepare to face the ultimate enemy: your own mind.
The Mound: Omen of Cthulhu – Deluxe Edition
Nacon
Pre-order now and receive the Lost Explorers’ Swords Pack for free, including two exclusive looks to equip on your swords before heading out on expedition.
The Deluxe Edition of The Mound: Omen of Cthulhu unlocks the following content:
– The Temple of Yig Exclusive Mission pack, an exclusive contract taking your expedition into a unique area of the cursed jungle.
– The Fortune Hunters Characters Pack, including two exclusive playable characters.
– The Abyssal Gear Pack, including exclusive looks for the knife, oil lamp, matchlock musket, and flintlock musket.
EMBARK ON A CO-OP EXPEDITION FOR UP TO 4 PLAYERS
In the cursed and hostile jungle, danger lurks around every corner. Lovecraftian horrors warp reality as madness closes in, while you explore ever deeper in search of infinite riches buried within The Mound.
MADNESS SYSTEM AND ALTERED PERCEPTION
Inspired by H.P. Lovecraft‘s oppressive atmospheres, the game features a deep madness system that makes the cursed jungle play with your perception. Unpredictable threats distort your senses, blur the line between reality and illusion, and sow paranoia within your group.
Soon you can no longer trust what you see and what you hear.
AN EXPEDITION INTO THE UNKNOWN
Aboard the galleon, prepare for your next expedition. Sign a contract with the captain to receive gear in exchange for the treasures you bring back, split weapons and equipment among your party, and choose which area of the jungle to explore next. The further you venture, the greater the dangers you will face.
The cursed jungle does not only breed the strangest of creatures. Something is also playing with your mind over there.
IN SEARCH OF THE MOUND
Once on the mainland, you are on your own, relying on spatialized voice chat to coordinate against unpredictable threats and gather what riches you can.
Discover abandoned forts during your expedition and recover their logbooks to unlock them as new starting point for future expeditions.
Venture ever deeper in the cursed jungle in search of The Mound, rumored to hold treasures beyond imagination.
The Mound: Omen of Cthulhu
Nacon
Pre-order now and receive the Lost Explorers’ Swords Pack for free, including two exclusive looks to equip on your swords before heading out on expedition.
EMBARK ON A CO-OP EXPEDITION FOR UP TO 4 PLAYERS
In the cursed and hostile jungle, danger lurks around every corner. Lovecraftian horrors warp reality as madness closes in, while you explore ever deeper in search of infinite riches buried within The Mound.
MADNESS SYSTEM AND ALTERED PERCEPTION
Inspired by H.P. Lovecraft‘s oppressive atmospheres, the game features a deep madness system that makes the cursed jungle play with your perception. Unpredictable threats distort your senses, blur the line between reality and illusion, and sow paranoia within your group.
Soon you can no longer trust what you see and what you hear.
AN EXPEDITION INTO THE UNKNOWN
Aboard the galleon, prepare for your next expedition. Sign a contract with the captain to receive gear in exchange for the treasures you bring back, split weapons and equipment among your party, and choose which area of the jungle to explore next. The further you venture, the greater the dangers you will face.
The cursed jungle does not only breed the strangest of creatures. Something is also playing with your mind over there.
IN SEARCH OF THE MOUND
Once on the mainland, you are on your own, relying on spatialized voice chat to coordinate against unpredictable threats and gather what riches you can.
Discover abandoned forts during your expedition and recover their logbooks to unlock them as new starting point for future expeditions.
Venture ever deeper in the cursed jungle in search of The Mound, rumored to hold treasures beyond imagination.