The Quick Answer

PlatformNvidia GeForce NOW (via Install Play)
Demo PeriodUntil June 22, 2026 (UTC)
Game Genre1-4 Player Co-op Horror
Official Release DateJuly 15, 2026

The Steam Next Fest is live, and one of the most anticipated horror arrivals is the temporary demo for the upcoming co-op title, The Mound: Omen of Cthulhu. For players whose local setups do not quite match the expected system requirements, there is good news: Nvidia has quietly enabled cloud streaming for the trial via GeForce NOW.

By using the platform's Install Play feature, subscribers can jump straight into the dark jungles of the subterranean world without downloading a single gigabyte.

How GeForce NOW Install Play Works for the Demo

Typically, games must go through a full onboarding process on Nvidia's servers before they become playable. However, for major events like the Steam Next Fest, Nvidia utilizes the temporary "Install Play" mechanism. This allows users to find the demo in the GFN app, initiate a session, and download the build directly to their virtual rig for immediate streaming.

Keep these details in mind before jumping in: - Timeline: The demo streaming capability is expected to run until the end of the festival on June 22, 2026 (UTC). - Supported Platforms: You can stream the demo on PC, Mac, Chromebooks, Android devices, and select smart TVs. - Session Limits: Free tier users will still experience standard queue wait times and the usual one-hour session limits.

If you are loading up the trial for the first time, check out our beginner's guide to help your squad survive the initial descent.

Cloud Streaming the 4-Player Co-op

The Mound: Omen of Cthulhu relies heavily on heavy shadows, volumetric fog, and dynamic lighting, which can severely tax mid-range graphics cards. Playing via GFN allows you to test the cooperative aspect with friends even if some party members are on non-gaming hardware.

The demo features the core multiplayer loop, letting you team up to explore Lovecraftian ruins. If you want to know how the multiplayer hosting works, we have broken down the co-op and crossplay options ahead of the July release.

Will the Full Game Launch on GeForce NOW?

While the availability of the demo during the Steam Next Fest is a positive sign, publisher Nacon has not yet officially confirmed whether the retail version of the game will support GeForce NOW on day one.

Historically, Nacon has been highly supportive of cloud gaming platforms, making it highly expected that we will see it in the library around the official release date on July 15, 2026. However, players should wait for an official announcement before purchasing the game solely for cloud play.

For now, the GFN trial is the perfect opportunity to see if the game's stressful sanity mechanics and terrifying subterranean atmosphere are right for your squad.

FAQ

Is the demo free to stream on GeForce NOW?

Yes, you only need a Steam account with the demo in your library and a GeForce NOW account (free or paid tier) to stream it.

Will the demo remain on GeForce NOW after Steam Next Fest?

It is currently unconfirmed if Nvidia will keep the demo active after the festival ends on June 22, 2026.

Will my progress transfer to the full game?

While cloud saves are supported via Steam, demo progress carrying over to the full launch on July 15, 2026, has not been officially confirmed by Nacon.