The Mound: Omen of Cthulhu - Deluxe Edition PC Steam Key

Survive Cosmic Madness in The Mound: Omen of Cthulhu - Deluxe Edition

Venture into a cursed, uncharted continent in The Mound: Omen of Cthulhu - Deluxe Edition, an atmospheric co-op survival horror extraction shooter developed by ACE Team and published by Nacon. Loosely inspired by H.P. Lovecraft’s cosmic horror, this intense adventure challenges squads of explorers to hunt for legendary treasures during the Conquistador era while fighting off unnamable monsters and their own deteriorating sanity.

Fight Unspeakable Horrors and Your Own Mind

In this dark jungle, your perception is your greatest vulnerability. As your sanity drops, you will encounter severe auditory and visual hallucinations that directly impact gameplay and coordination—making it impossible to fully trust what you see or hear. Communication via proximity voice chat is vital as you complete dangerous expedition contracts. Should a teammate fall, they become corrupted, turning against the remaining crew in a brutal test of survival.

Key Features:

• Lovecraftian Co-op Action: Team up with up to 4 players with full crossplay support or brace the madness alone in an oppressive cosmic horror setting.
• Deep Illusion Mechanics: Adapt to a dynamic madness system that distorts gameplay, spawning reality-warping illusions and paranoia.
• Handcrafted Expedition Maps: Explore 18 uniquely atmospheric levels filled with creeping dread, hidden lore, and high-stakes extraction loops.
• Deluxe Edition Content: Dive deeper into the expedition with exclusive launch content, including unique character and weapon skins.

Secure your Steam PC key for The Mound: Omen of Cthulhu - Deluxe Edition today. Compatible with Microsoft Windows and GeForce Now. Rated ESRB M for Mature / PEGI 18 due to intense violence, blood, and gore. Enter the jungle, complete the contract, and make it back to your galleon before madness devours you completely.

© 2026 Nacon

• Release date:
  July 15, 2026

• Publisher:
  Nacon

• Developer:
  ACE Team

• Genres:
  Action, Adventure, Shooter, and Horror

• PEGI rating:
  18

• Activation platform:
  Steam

• Native systems:
  PC

• Playable on:
  Microsoft Windows

• Supported languages:
  JA, ZH, PL, PT, RU, IT, FR, DE, ES, EN, KO

• Activation region:
  Rest of World (See below)

• Region exceptions:
  Can be activated in TG, UG, EH, ZM, SD, ZW, SH, YT, AF, BH, TL, IR, IQ, MV, MN, KP, OM, YE, MO, AD, AT, BE, BG, HR, CY, CZ, DK, EE, FI, DE, GR, HU, IS, IE, IT, XK, LV, LI, LT, LU, MT, MC, NL, DZ, AO, BJ, BW, BF, BI, CM, CV, CF, TD, KM, CG, CD, CI, DJ, GQ, ER, ET, GA, GM, GH, GN, GW, KE, LS, LR, MG, MW, ML, MR, MU, MZ, NA, NE, NG, RW, ST, SN, SC, SL, SO, SS, SZ, TZ, KN, LC, MF, PM, VC, BQ, SX, TT, TC, VI, FK, GS, BV, UM, AN, AU, FJ, NZ, FO, KI, MH, NR, PW, PG, WS, SB, TO, TV, VU, AS, CK, GU, HM, MP, NC, NU, PF, PN, TK, WF, NF, AQ, TF, NO, PL, PT, RO, SM, SK, SI, FR, ES, SE, CH, GB, GG, GI, IM, JE, SJ, VA, CA, US, AG, AI, AW, BB, BM, BQ, VG, KY, CP, CU, CW, DM, DO, GL, GD, GP, HT, JM, MQ, MS, UM, PR, BQ, and BL

This Steam key is a genuine, brand-new retail license sourced via reliable B2B distribution channels and delivered electronically via email. Due to the nature of digital goods, the standard 14-day cancellation right is waived once the key has been delivered, unless proven defective. Activation constitutes legal acceptance of the publisher's underlying end-user license agreement (EULA) and third-party terms of service.

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4. Click the “Games” menu at the top-left corner
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6. Enter your product key
7. Follow the prompts to complete activation