The Mound: Omen of Cthulhu System Requirements - Minimum and Recommended

The Mound: Omen of Cthulhu publishes two requirement tiers on Steam, and the honest summary is that storage and memory are identical in both: 23 GB and 16 GB either way. What changes between tiers is the processor and the graphics card.

The two published tiers

Component	Minimum	Recommended
OS	Windows 10/11 64-bit	Windows 10/11 64-bit
Processor	Intel Core i7-8700k or AMD Ryzen 5 1600x	Intel Core i7-11700k or AMD Ryzen 5 5500
Memory	16 GB RAM	16 GB RAM
Graphics	Nvidia GTX 1660 SUPER 6GB, AMD Radeon RX 5600 XT 6GB or Intel Arc A770 16GB	Nvidia RTX 3070 8GB or AMD Radeon RX 6750 XT 12GB
DirectX	Version 12	Version 12
Storage	23 GB available space	23 GB available space

Both tiers begin with the same line, that the game requires a 64-bit processor and operating system. There is no 32-bit path published.

Minimum spec in full

The store page states the minimum as a short list, and it is worth reading as requirements rather than suggestions.

• OS: Windows 10/11 64-bit.
• Processor: Intel Core i7-8700k or AMD Ryzen 5 1600x.
• Memory: 16 GB RAM.
• Graphics: Nvidia GTX 1660 SUPER 6GB, AMD Radeon RX 5600 XT 6GB or Intel Arc A770 16GB.
• DirectX: Version 12.
• Storage: 23 GB available space.

The unusual part is the CPU floor: an i7-8700k minimum is a high bar for a 6 GB graphics card, which suggests the expedition simulation is processor-bound rather than fill-rate-bound.

Recommended spec in full

The recommended tier keeps the operating system, the memory and the storage identical, and raises only the processor and the graphics card.

• OS: Windows 10/11 64-bit.
• Processor: Intel Core i7-11700k or AMD Ryzen 5 5500.
• Memory: 16 GB RAM.
• Graphics: Nvidia RTX 3070 8GB or AMD Radeon RX 6750 XT 12GB.
• DirectX: Version 12.
• Storage: 23 GB available space.

There is no separate line for a solid-state drive, so the listing does not say whether the 23 GB has to sit on an SSD.

The gap between the two graphics tiers is large. The minimum names a GTX 1660 SUPER or an RX 5600 XT, and the recommended names an RTX 3070 or an RX 6750 XT, which is roughly two product tiers of headroom between them. That is a wide spread for a listing that keeps memory and storage fixed, and it suggests the graphics layer scales rather than the simulation.

What the spec sheet does not say

Three things a buyer would normally check are absent: a resolution target, a frame-rate target and a graphics preset description. The listing gives hardware only.

There is also no macOS or Linux requirement block, because neither build is listed. If you want to see how the tiers were configured on the platform side, Availability breaks that down, and How It Plays explains what the machine is being asked to simulate.