ACE Team's co-op horror 'The Mound: Omen of Cthulhu' launches today to strong hype and mixed reviews

ACE Team's cooperative horror game The Mound: Omen of Cthulhu is out today, July 15, on PlayStation 5, Xbox Series X|S, and PC via Steam. It arrives with a lot of goodwill behind it, a $29.99 price tag, and a publisher, Nacon, that spent the first half of this year in insolvency proceedings.

If you have not been following it, The Mound is a four-player Lovecraftian survival game set in the Conquistador era. You and up to three friends land on an uncharted jungle island under contract from a ship captain, hunt for treasure and a missing person, and try to get back to the galleon alive. The catch is your own head. The longer an expedition runs, the more the island's creatures show up, and the more your sanity frays. Hallucinations kick in, so an ally can start to look like a monster, a flat clearing can turn out to be a pit, and you stop trusting what you are seeing or what your teammates are telling you.

That sanity system, and the way it turns a co-op run into an exercise in whether your group stays calm, is what got people paying attention in the first place.

The demo did the heavy lifting

The Mound built its audience the honest way, with a playable demo. ACE Team put a build out during Steam Next Fest, it landed, and word spread. By launch week the game had crossed roughly 800,000 wishlists on Steam, which is a serious number for a mid-budget co-op title from a studio this size. The demo response is also why the July 15 date got locked in when it did.

ACE Team is the Chilean studio behind Zeno Clash, Rock of Ages, and The Eternal Cylinder. They have a long history of making strange, hand-built games that do not look like anything else on the shelf, and The Mound is squarely in that lineage. Credit where it is due: this is their idea and their execution, not a publisher's template.

On pricing, the Standard Edition is $29.99, with a Deluxe Edition at $39.99 that adds a Temple of Yig area, extra Fortune Hunter characters, and cosmetic packs. Storefront listings show a launch discount off the base price for early buyers.

Reviews are split, and it is worth being precise about why

This is not a case of a broken game. The early reviews mostly agree The Mound works and runs, and they mostly agree on what it does well. The atmosphere, the sound design, and the Unreal Engine 5 visuals get consistent praise. The cosmic-horror premise and the sanity mechanic land when the game lets you sit in the tension and figure out what is real.

The complaints are about depth. Several reviewers felt the game is strongest when you are quietly exploring and reading the environment, and weakest the moment it asks for more active engagement than that. Creative Bloq's review called it "an Unreal Engine 5 fever dream that gets lost in its own ideas." Other outlets landed in similar territory: great to be inside of, thinner than they wanted once the novelty of the hallucinations wore off.

For a co-op game, your mileage will also depend heavily on your group. A game built around shared fear and mistrust is a different experience with three friends on voice chat than it is with randoms who bail after one bad run. Reviewers playing in coordinated groups tended to be more forgiving. Treat the scores as a starting point, not a verdict.

The Nacon question hangs over it

The awkward part of this launch has nothing to do with the game itself. Nacon, the French publisher shipping The Mound, filed for insolvency on February 25 after its banking pool refused access to funds tied to a €43 million bond repayment. In the months since, three of Nacon's own studios (Spiders, Kylotonn, and Cyanide) entered judicial proceedings, the Lille commercial court ordered Spiders liquidated on April 29, and the company cut around 90 jobs, roughly 15 percent of its staff, in May. BCN covered the fallout when Slitherine bought the Blood Bowl license off Nacon earlier this month.

ACE Team is an external studio, not one of Nacon's internal teams, so it is not caught in the same reorganization. But the publisher handling your marketing, storefront relationships, and post-launch support being mid-restructuring is a fair thing for buyers to know going in, especially for a live-ish co-op game that will want patches and content updates to keep a community around. None of that is a knock on the game. It is context.

Bottom line

The Mound: Omen of Cthulhu is a distinctive, good-looking co-op horror game from a studio that has earned the benefit of the doubt, launching today at $29.99 with a strong demo and a big wishlist tail behind it. Reviews say it is atmospheric and a little thin, best played with a group you trust. Whether it gets the ongoing support to grow past launch is the open question, and that one is partly out of ACE Team's hands.