Move with W A S D, hold Shift to run, left-click to interact or attack, hold right-click to aim and press Tab for the inventory. To interact, face the object and stand right next to it. Save at the emerald fire bowls; the first is in Iván's study. Change language under Options › Language.
Checked by Kingy on version 1.0.1 (Steam build 26020008) on Windows 11 with keyboard and mouse, October 19, 2026. The controller layout was not tested.
1
Default keyboard and mouse controls
Play starts a new game straight away, with no difficulty or save-file screen. These are the defaults on the Keyboard and Mouse screen, under Options › Keyboard.
You have to face an object and be right next to it. Kingy tested this at a door without moving: clicking while facing away did nothing, and clicking while facing the door played the knock. A step back from the TV did nothing either, even while facing it.
Demo v0.4 introduced the same rule, and the full game keeps it. Many decorations don't respond at all, so a silent click doesn't always mean you're standing wrong.
Interact with an emerald fire bowl to save. The first one is in Iván's study, which you open during the opening walkthrough. The save screen has three files and labels each one with the room name and a date.
Dying shows the title SOMNIUM AETERNUM, then a menu with Retry, Load game and Return to title.
Retry reloads your latest save, manual or autosave. Anything you used after that save, such as a Lavendoleum, comes back, and any fight after it has to be won again.
Pick English, Español, Português or 日本語 on the first boot screen, or change it later under Options › Language. Japanese adds the subtitle 暗闇の夢 to the title logo. The menu only says Português; the Steam store lists the language as Brazilian Portuguese.
Demo v0.4 removed the language option from the in-game menu. In the full game it is back, as the first row of Options.
Sources · 4Walkthrough · Official · checked 21 Oct 2026 · Research checked 22 Oct 2026
Kingy test run: version 1.0.1, new game to the first enemy fight ↗Kingy's own playthrough of the retail game through Steam on Windows 11: version 1.0.1, Steam build 26020008, keyboard and mouse, played October 19, 2026 from a new game to the first enemy fight. The screenshots on these pages were captured from the game window during that run. Controller, Steam Deck, later areas and the 1.0.1 puzzle and finale fixes were not tested.Walkthrough ·
Kingy test run: version 1.0.1, the elevator and floor 2 ↗Kingy's own play of the retail game through Steam on Windows 11: version 1.0.1, Steam build 26020008, keyboard and mouse, October 20–21, 2026. It continues from the study save after the first fight, through the elevator to floor 2 and into the floor-2 apartment's living room. Screenshots and silent clips were captured from the game window, with no cutscene footage. The revolver, the 1.0.1 puzzle and finale fixes, controller and Steam Deck were not tested.Walkthrough ·
Tenebris Somnia store page ↗Released October 16, 2026; Windows only; US$19.99 with a 20% discount on October 17, 18 and 19; languages listed as English, Spanish (Spain and Latin America), Japanese and Brazilian Portuguese; Download Demo; About This Game.Official ·
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