New Cult of Tsathoggua Update for The Mound Trailer

Ethan Wright 10/30/2026

When it comes to cooperative cosmic horror, the stakes are always high. Now, the ACE Team is diving deeper into the abyss, treating fans of The Mound: Omen of Cthulhu with a major, free update for Halloween. This fresh content introduces the terrifying entity known as The Cult of Tsathoggua>, adding new, unspeakable terrors to the search for ancient treasures.

The base game already sets the stage for perilous exploration. Players venture across an uncharted continent in search of legendary riches, armed with fragile 15th-century weaponry. Their mission is fraught with dread, as they must cautiously advance while battling unspeakable horrors and desperately trying to maintain their sanity against the encroaching madness.

This new update doesn’t just offer new scares; it fundamentally changes the gameplay experience. Central to the update is the introduction of Tsathoggua, an evil being with a grotesque appearance reminiscent of an oversized amphibian. This entity lurks deep within the cursed continent, embodying the sheer scale of the cosmic dread that defines the world of The Mound.

Beyond introducing this colossal deity, the update refines the mechanics, making every discovery and every fight more nerve-wracking. Players will now engage with revamped Treasure Shrines, where collecting valuable items becomes a genuinely risky endeavor. These shrines may no longer be safe havens; interacting with them could summon nearby monsters, trigger unexpected creature appearances, or inflict direct damage on the players.

The tools for survival have also been overhauled. Players gain access to new weapons and occult items, offering fresh ways to fend off monstrous threats and engage in epic, desperate battles—even pitting the entities against one another in horrifying encounters.

For those who enjoy deep progression, the update introduces a more robust system for character development. Players can now reach level 70 and invest their earned skill points into unlocking powerful new abilities. These enhancements include resistances to bleeding, increased stamina, and enhanced movement speed, allowing adventurers to better cope with the relentless pressures of the deep unknown.

But perhaps the most chilling additions focus on the fraying of the human mind. New sanity effects are woven into the gameplay, reminding players that their grip on reality is constantly slipping. As they confront the horrors of the Mound, players will face escalating psychological turmoil, dealing with panic and confusion that rattles the entire group.

The Mound: Omen of Cthulhu invites you to confront the sublime and the grotesque. With the free The Cult of Tsathoggua> update, the journey into the cosmic abyss has just become infinitely more perilous. Available now on PC via Steam, PlayStation 5, and Xbox Series, the opportunity to discover new terrors awaits those brave enough to explore the depths of the Mound.