A treasure expedition is an excellent plan right up until somebody says the jungle is cursed. At that point, sensible people return to the ship and invent a meeting. The Mound: Omen of Cthulhu is about the other people: explorers who have weighed unimaginable riches against unimaginable horrors and decided the wording is probably just there to discourage competition.
ACE Team's first-person horror game, published by Nacon, launched on July 15, 2026, for PC, PlayStation 5 and Xbox Series X|S. It supports solo play and online cooperation for up to four, with crossplay joining the platforms. The central complication is delightful in a deeply unhelpful way: your perception can become unreliable. Bringing friends sounds reassuring until you remember these are the same friends who cannot consistently identify the correct exit in a shopping center.
Reasons to look closer
The strongest idea is making cooperation about agreeing on reality. In plenty of multiplayer games, a teammate supplies another gun or a useful ability. Here, somebody else can help establish whether what you are seeing or hearing is actually happening. That makes communication part of the horror itself. A confident callout is suddenly something to question, especially when it comes from the person who was enthusiastically wrong thirty seconds ago.
The conquistador-era expedition framework also gives the treasure hunt an abrasive personality. You are entering hostile territory for wealth, then discovering that the territory has several opinions about the arrangement. There is a pleasingly grim mismatch between the practical business of fulfilling a contract and the cosmic inconvenience of reality coming loose. Somewhere aboard that ship, a captain still expects the paperwork to make sense.
The captain would like you to bring something back
Expeditions begin aboard a galleon, where the group chooses a contract, arranges equipment and decides where to head next. The Steam description frames gear as part of the bargain with the captain: you receive supplies in exchange for treasure brought home. It gives preparation a tangible home rather than leaving it floating in a menu. There is something inherently ominous about organizing a work trip on a boat that can leave without you.
Limited inventory and basic weaponry put pressure on those decisions. Nacon's gameplay outline emphasizes avoiding trouble and defending yourself rather than treating the jungle as a shooting gallery. Danger increases as an expedition continues, so greed and caution pull in opposite directions. One more valuable object always sounds reasonable when described by somebody who is not currently carrying it away from an unspeakable creature.
Please confirm that you are still a person
The perception system's examples are especially nasty. Nacon describes hallucinated horn calls, blood rain visible to one explorer, and teammates appearing as undead threats. These are changes to the information you use to make decisions, not simply an atmospheric filter announcing that things have become spooky. A mistaken interpretation can turn a rescue attempt into a very awkward friendly-fire incident.
The publisher also describes an approach without a conventional sanity meter warning you when to stop trusting your senses. That gives the uncertainty its teeth. A clearly labelled hallucination would be little more than an inconvenient screensaver. Ambiguity is the useful part: the player has to decide whether to act, ask somebody else, or risk waiting. A group capable of calm communication has an obvious advantage. A group that communicates exclusively through increasingly loud accusations has, at least, chosen a fitting holiday destination.
Exploration with an exit strategy
Nacon's launch material specifies 18 handcrafted maps and progression tied to recovering and extracting expedition logbooks. The Steam overview adds abandoned forts that can become starting points for later journeys. That gives exploration a purpose beyond filling pockets. Discoveries can change where the next trip begins, making survival useful to more than the captain's accounts department.
The period arsenal includes bows, crossbows and early firearms, with limited ammunition supporting the vulnerability. Proximity voice chat fits the same design: keeping track of the group is part of the expedition, not a guaranteed administrative service. Together, those choices point toward cautious movement and shared awareness. This is a much more interesting promise than simply adding a tentacle to a familiar gunfight and hoping everyone applauds the literary reference.
Choose the crew before choosing the treasure
Solo play is available, but the social premise is plainly central. If the idea that most interests you is arguing with friends over whether the environment is lying, then having those friends present is rather important. Crossplay helps with assembling that group; it cannot help with the friend who insists every bad decision was somebody else's fault.
The Mound's clearest appeal is that messy overlap between fear, trust and greed. Its expedition loop gives the team a practical job, while the unreliable senses threaten the basic coordination needed to do it. That makes it an intriguing pick for a regular horror crew willing to communicate and occasionally laugh at its own panic. Agree on a meeting point, watch the supplies, and try to establish that the monster is not your friend before making a dramatic career decision with the musket.