Tenebris Somnia system requirements
Use the Steam table. It asks for 8 GB of RAM and 13 GB of disk. GOG still shows a demo-era line of 1 GB RAM and 2 GB of disk. That older line is not the retail requirement.
Last checked 2026-10-18.
| Minimum | Windows 10 64-bit, 2.4 GHz dual core, 8 GB RAM, 4 GB VRAM, DirectX 11, 13 GB. |
|---|---|
| Recommended | Windows 11 64-bit, 3.6 GHz quad core, 16 GB RAM, 8 GB VRAM, DirectX 11, 13 GB. |
| Deck | Steam Deck Verified, per Steam news. ProtonDB Gold from 6 reports, low confidence. |
| Mac | No official Mac or Linux build, so there is no Mac spec. |
What the route feels like
I almost copied the GOG sidebar, because it is the first requirements block on a store people trust. Then I put it next to Steam. GOG still says 1 GB of RAM, DirectX 9, and 2 GB of space, which is the demo-era card. The retail install is 13 GB. If you size a drive off the GOG number you will run out of room during the download. I am keeping both figures on the page so the conflict is visible.
Steam specification
Quoted from the Steam store page for app 2121510 on October 18, 2026.
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 64-bit or later | Windows 11 64-bit |
| CPU | 2.4 GHz dual core or better | 3.6 GHz quad core or better |
| RAM | 8 GB | 16 GB |
| GPU | 4 GB VRAM or better | 8 GB VRAM or better |
| DirectX | 11 | 11 |
| Storage | 13 GB | 13 GB |
Why GOG disagrees
The GOG product page was still showing Windows 10, a 2.4 GHz dual core, 1 GB RAM, DirectX 9, and 2 GB of space. That matches the demo period, not the 13 GB retail install on Steam. Until GOG updates the card, treat Steam as the requirement and GOG as the store for the DRM-free installer.
Questions people ask
Can my PC run Tenebris Somnia?
Steam’s minimum is Windows 10 64-bit, 8 GB RAM, a GPU with 4 GB VRAM, DirectX 11, and 13 GB free.
Is it Steam Deck Verified?
Yes, according to Steam’s news post. ProtonDB’s community tier was Gold from six reports, which is a small sample.
Keep reading
Sources
- Steam store — Minimum and recommended tables
- GOG — Out-of-date requirements card
- ProtonDB — Gold, 6 reports, low confidence