These answers cover official game identity, edition differences and the first choices to make when looking for help. For a specific blocked door or item, use the narrow guide linked in the answer rather than reading a later-game walkthrough by accident.
What is Tenebris Somnia?
It is a 2D survival horror adventure by Andrés Borghi and Saibot Studios, published by New Blood Interactive. Pixel-art exploration is combined with live-action cinematics. The official setup follows Julia’s visit to her former boyfriend Ivan after recurring nightmares.
Is Tenebris Somnia already out?
Yes. The official release date is October 16, 2026. See release date and platforms for verified store links and the distinction between Nintendo Switch availability and Switch 2 compatibility.
Where can I get the official demo?
The Steam game page offers a Download Demo option. The launch announcement also says the demo was updated. The demo version guide explains why an old demo recording may not match the current download. Save transfer and exact current-demo duration remain unconfirmed here.
How do I open the first Study Door?
Make Auritsatio from the Glass, blood, Developing Chemical and sunlight, then use it on the seal. The chemical puzzle guide has progressive hints before the full answer. The Wrench removes the low bedroom window board; it does not force the sealed Study Door directly.
Why is the Floor 2 TV still showing static?
The remote is in the Floor 3 Study. Find the two batteries on Floor 2, use both at the upstairs remote, and return to the downstairs television. Read the Floor 2 route for the full loop. The displayed symbol order varies between runs, so use your own screen’s clue.
Are Auritsatio and Aurifer the same thing?
No. Auritsatio is the early chemical product. Aurifer is the final form of the late-game knife. Their similar names do not connect the opening door to the entire Desiderium crafting route.
How many endings are there?
Steam lists four numbered ending achievements. The ending overview identifies them with route spoilers hidden in expandable sections. Older guides covering two main finales do not establish that the hidden endings are absent.
Does the site track my Steam achievements?
No. The achievement tracker is a personal planning aid. Steam’s official schema supplies the names and short conditions, while your game and Steam account determine actual unlocks. Local notes do not modify the game, and this site does not request your Steam credentials.
Is there a verified completion time here?
Not yet. A single video length, demo session or anecdotal report does not establish a dependable playtime range. Reading, failed encounters, optional collectibles and additional endings can change a player’s session. This site does not publish a precise hours estimate without an appropriate evidence basis.
Are these guides official or personally playtested?
This is an independent guide site. Detailed steps are checked across the cited full-game references, with version boundaries made visible. They are not presented as an in-house playthrough. If something differs, report the platform, displayed version, floor and exact inventory state through Contact.
Sources & corrections
This guide is written from the sources below and reviewed for consistency. We do not claim a personal playtest. Exact game build numbers were not available for every source; follow the stated full-game or demo scope.
- Steam — Tenebris Somnia official store ↗
- Steam — official achievement schema ↗
- Steam — official launch announcement and 1.0.1 hotfix ↗
- Xbox Wire — Tenebris Somnia, by executive producer Airdorf ↗
- Into Indie Games — Floor 3 and Floor 2 walkthrough ↗
- NoobFeed — apartment puzzles, part 1 ↗
Checked on 2026-10-23. Found a different result? Send a correction with the guide URL and game version.