Sublustrum Main Fuse: Location and Installation Guide

Where is the main fuse, and where does it go?

Check the shallow drawer on the Organophone desk console, then bring the fuse to the apartment capsule’s exposed side compartment. The recordings show the player returning with the Echophone before taking the fuse. If you looked in the room earlier and found nothing usable, compare that later return with your own progress.

Actual playtest footage from Qustat. This room view helps orient the route; it does not show a fully activated capsule.

Which videos verify the fuse route?

Qustat’s Sublustrum playtest walkthrough supplies the clean screenshots. The drawer and item inspection appear at 8:18–8:20; the capsule compartment is shown at 13:00. Its Russian item label, “Предохранитель”, identifies a fuse.

Golden Wombat’s Main Fuse Solution provides a separate short route: the player climbs back to the apartment, approaches the console with the Echophone, collects the fuse, then fits it to the capsule. We reviewed both recordings on October 14, 2026. The short’s creator overlays are not used in our screenshots.

These are observed actions in creator footage of the 3D playtest. We have not performed a separate hands-on test or established that every build uses identical prerequisites. For access and edition context, use the playtest guide.

How do I find and install the recorded fuse?

1. 1. Return to the Organophone console drawer

   Go to the Organophone desk console in the apartment. The reviewed route returns here with the Echophone and opens the shallow drawer. Focus on that drawer rather than searching the cooling wheels for a fuse.

   

2. 2. Collect the fuse and check the item

   Take the item from the drawer. Qustat inspects it immediately; the Russian item label identifies a fuse. This inspection distinguishes the fuse from the other mechanical objects collected during the chapter.

   

3. 3. Fit the fuse to the capsule side compartment

   Return to the central apartment capsule and find its exposed rectangular side compartment. The short recording shows the fuse being fitted into a vertical fitting and the lid closing. The clean screenshot here identifies the compartment; it does not prove that the whole capsule is ready.

   

What if the drawer or capsule does not respond?

Start by comparing the exact target with the source. The fuse comes from the desk console drawer; its destination is the capsule compartment. The two interactions are in different places. The recordings do not establish a particular keyboard shortcut or a universal bug fix, so changing controls or restarting the game is not a verified step in this guide.

If scanning is the part you have not used, the Echophone guide illustrates raising the tool and revealing a hidden object. If another capsule requirement is blocking progress, keep that separate: the cooling-puzzle page explains its unresolved evidence, and the chemical-mixture guide covers the inhaler recipe.

Which other puzzle help is relevant?

• Problem-based puzzle guide to identify the next obstacle.
• Piano and chamber slider pattern for the separately reported musical settings.

Game assets belong to Brickworks Games / HypeTrain Digital. Recording credit: Qustat and Golden Wombat. The screenshot links point to Qustat’s matching views; the short provides the installation action described above.