ACE Team adds Tsathoggua area to The Mound: Omen of Cthulhu
The free Halloween update also raises the level cap to 70 and revamps Treasure Shrines so loot can alert nearby monsters.
ACE Team released the free "The Cult of Tsathoggua" update for The Mound: Omen of Cthulhu on October 30, 2026, timed to Halloween. The update is available now on PC via Steam, PlayStation 5 and Xbox Series, according to bloody-disgusting.com.
The update adds an area dedicated to Tsathoggua, described as an oversized amphibian-like entity. New sanity effects were also added to the game.
Treasure Shrines were revamped so that some collected items may alert nearby monsters, summon creatures or damage players.
The update introduces new weapons and occult items that can be used against monsters, including pitting them against each other. The level cap was raised to 70, with skill points unlocking abilities such as bleeding resistance, extra stamina or movement speed.
Quick answers
Is the Cult of Tsathoggua update free?
Yes. ACE Team released "The Cult of Tsathoggua" as a free update.
Which platforms is the update available on?
It is available now on PC via Steam, PlayStation 5 and Xbox Series.
What is the new level cap in The Mound: Omen of Cthulhu?
The update raises the level cap to 70.