The Quick Answer
| Closed demo dates | June 5–8, 2026 |
| How to register | Sign-up form on My Nacon |
| Registration closes | June 8, 2026 |
| Keys per selected player | 3 (one for you + two to share) |
| Access | Limited / selected players only |
| Wishlist | On the official Steam page |
Before The Mound: Omen of Cthulhu launches on July 15, Nacon is running a closed hands-on test — and the way it's set up is genuinely thoughtful for a co-op game. Here's exactly how to throw your hat in, plus why wishlisting matters even if you don't get a key.
When is the closed beta?
The closed demo runs June 5 to June 8, 2026. It's a limited test — not everyone who registers will get in — and it's your one confirmed chance to play before the full launch. Access is granted to a selected pool of players who sign up in time.
How to register
- Head to the My Nacon platform and find the sign-up form for The Mound: Omen of Cthulhu.
- Register with your details before registration closes on June 8, 2026.
- Wait to see if you're selected — a limited number of entrants are picked for access.
The standout detail: selected players receive three keys in total — one for yourself and two to hand to friends. For a game that lives and dies on a coordinated squad, that's a smart move: it lets you bring a crew in together instead of testing solo. If you've got co-op partners lined up, coordinate who registers so you maximize the group's odds of getting in.
How to wishlist on Steam (and why it matters)
Whether or not you land a beta key, wishlisting is the single most useful free thing you can do. Add the game from the official Steam page and you'll get notified the moment the price drops, a launch discount appears, or any further playtests or demos are announced. It also helps the game's visibility, which is a nice thing to do for a mid-budget title you want to succeed.
To wishlist: open the Steam store page, sign in, and click Add to your Wishlist. On console, you can follow or pre-order from the PlayStation Store and Microsoft Store listings to get similar notifications.
What to expect if you get in
The closed demo should reflect what we've seen in the recent gameplay showcase: prepping a loadout aboard the galleon, taking a contract, and descending into the cursed jungle and the ruins below as a squad — all under the pressure of the sanity system that distorts the world per player. If you do get access, read our survival guide and co-op guide first so you're not learning the hard way with limited time on the clock.
If you miss the beta
Don't panic — a closed test is a small sample, and the full game is only weeks away. Wishlist on Steam, follow on console, and keep an eye on our news hub; if Nacon opens a wider playtest or a public demo before July 15, that's where you'll hear about it. Worst case, you wait for launch day with everyone else.
FAQ
When does The Mound beta start and end?
The closed demo runs June 5–8, 2026, with registration open through June 8 on My Nacon.
How many beta keys do I get?
Selected players receive three keys total — one for themselves and two to share with co-op teammates.
Is the beta on PC and console?
Register on My Nacon for details on eligible platforms. Wishlist or follow the game on your platform's store to catch any platform-specific announcements.
Will there be an open demo before launch?
Only the closed June 5–8 test is confirmed so far. Wishlisting on Steam is the best way to be alerted if a public demo is added.
Registered and ready? Get ahead of the curve with our survival guide, sort your squad in the co-op & crossplay guide, and brush up on the world in our lore explainer.