
Publisher: Nacon · Release date: 2026-07-15
The cheapest The Mound: Omen of Cthulhu key that activates in the US costs $17.55 at Instant Gaming (Steam, EUROPE & US & CANADA key). That is 72% less than the dearest offer we track. That compares with $25.99 on Steam. Checked .
An expedition into the unknown Join a team of explorers in search of treasure. Aboard your galleon, prepare for each mission by selecting weapons and equipment before setting off for adventure in the cursed jungle. The further you make progress, the greater the danger you'll face before you make it to the gates of a legendary underground world where unimaginable riches await. Lovecraftian horror and altered reality The Mound is inspired by the stories of H.P. Lovecraft with their oppressive and unpredictable atmospheres. Here, the supernatural forces don't just hunt you down: they distort your perception of every situation to throw you off balance. Faced with diabolical creatures and unexplained phenomena, the border that separates reality from illusion blurs, sowing doubt and paranoia among your group. Cooperation put to the test In The Mound, survival depends on communication and helping each other. But as madness sets in, hallucinations intensify. Can you still trust your perception and do you really have time to assess the situation? One poor decision, one misplaced shot, and the mission could turn into a disaster. A cursed jungle brimming with treasure Each expedition takes you deeper into a dense jungle where more dangers lurk and madness threatens to overwhelm you. Stay clear-headed, complete your objectives and return to your galleon before it's too late.
Prices last checked . Each is the price the store lists; marketplaces add a service fee at checkout.
Yes. The cheapest key that activates in the US costs $17.55, 32% less than the $25.99 Steam asks.
The lowest price we recorded in the last 30 days was $14.44. The cheapest offer today is $14.53.
Not always. Stores that sell their own keys, such as Steam and GOG, add no service fee, though sales tax is added at checkout in the US and Canada. Marketplaces add a service fee at checkout, and some payment methods add their own, so on a marketplace the total at checkout will be higher than the price listed here.
Not all of them. Keys sold for another region (ASIA, EUROPE, LATAM, ROW) may not activate on an account registered in the US; that applies to 10 of the 17 offers here. The cheapest key named above does.
Official stores sell their own keys. Marketplaces and third-party sellers sell keys from other sellers: check the seller and the key’s region before you buy, and pay through the store’s own checkout.
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Steam: Mixed (68%) · 3,258 reviews