The sealed level
Threshold Institute · Site record
- Name
- The sealed level
- Part of
- The Institute's site
The sealed level was dug around the containment chamber in year 1, before the buildings above it (T-001). It held the cells and the stores, and after the brute every new corridor on it was dug wide enough for one to be walked through (T-003). After the shade it was lit through the night (T-004, T-005).
From year 11 its own rooms began to turn. The last storeroom of the east wing went dark with all its lamps lit (T-008). The archive pulled a clerk from wall to wall (T-009). The door of the old map room on the south corridor led elsewhere (T-010), the north stores grew longer inside than out (T-011), and the old pump room let no sound out (T-012). The biology lab killed two researchers with cold (T-013), the records room turned upside down (T-014), and the closed canteen replayed the people who had eaten in it (T-015). Tomas Rehn walked every corridor with chalk and a count (T-008), and Director Varga ordered every room measured once a year (T-010).
The first walkers of the surveys were trained here, roped, in the upside-down room (T-014), and what the retrieval runs brought back was tested here (T-034). When the widening failed, Erik Halden took his team down to seal the lower levels, and the doors of the sealed level closed behind them on the fourth day (T-055). The level is abandoned to the warden, which walks its corridors and seals every door it passes (T-055).
Found here
Section titled “Found here”The files that name this place in their line on where the threshold was found:
| File | Found | Where found |
|---|---|---|
| T-004 Shade | Year 4, month 2, day 11 | The unlit service tunnels under the sealed level |
| T-005 Echo | Year 5, month 11, day 28 | The east corridor of the sealed level |
| T-008 Dark room | Year 11, month 5, day 6 | The last storeroom of the sealed level’s east wing |
| T-010 Elsewhere door | Year 14, month 11, day 3 | The door of the old map room on the sealed level’s south corridor |
| T-011 Bigger inside | Year 15, month 8, day 2 | The stores room on the sealed level’s north side |
| T-012 Quiet room | Year 17, month 1, day 30 | The old pump room of the sealed level |
| T-013 Cold room | Year 18, month 12, day 5 | The biology lab of the sealed level |
| T-015 Replay room | Year 21, month 10, day 1 | The old canteen of the sealed level, closed since year 20 |
| T-055 Warden | Year 48, month 2, day 9 | The Institute’s sealed level, on the camera of its anteroom |
Named in containment procedures
Section titled “Named in containment procedures”The files whose containment procedures name this place, to hold a threshold here, to keep one away, or as a rule for the place:
| File | Class | Found |
|---|---|---|
| T-001 The rift | Class III | Year 1, month 1, day 1 |
| T-002 Rift stalker | Class II | Year 1, month 4, day 17 |
| T-003 Rift brute | Class II | Year 2, month 9, day 3 |
| T-004 Shade | Class II | Year 4, month 2, day 11 |
| T-005 Echo | Class II | Year 5, month 11, day 28 |
| T-008 Dark room | Class I | Year 11, month 5, day 6 |
| T-010 Elsewhere door | Class I | Year 14, month 11, day 3 |
| T-012 Quiet room | Class I | Year 17, month 1, day 30 |
| T-015 Replay room | Class I | Year 21, month 10, day 1 |
| T-026 Trader | Class I | Year 28, month 9, day 6 |
| T-031 Hollow | Class II | Year 32, month 9, day 30 |
| T-034 Pale Lantern | Class I | Year 34, month 3, day 11 |
| T-038 Tomorrow Radio | Class I | Year 36, month 10, day 5 |
| T-042 Endless Battery | Class I | Year 40, month 8, day 30 |
| T-043 Alien skitter | Class II | Year 41, month 3, day 14 |
| T-045 Burrower | Class II | Year 42, month 7, day 2 |
| T-049 Toxic wolf | Class II | Year 45, month 5, day 8 |
| T-055 Warden | Class II | Year 48, month 2, day 9 |
Also named in
Section titled “Also named in”The last column says where in each file.
Part III: Going through (the places and creatures)
| File | Found | Where named |
|---|---|---|
| T-021 Upward rain | Year 25, month 10, day 3 | Addendum T-021-2 |
| T-023 Listening field | Year 26, month 11, day 2 | Addendum T-023-2 |
| T-025 The copied camp | Year 28, month 1, day 19 | Addendum T-025-2 |
| T-027 Statue | Year 29, month 3, day 27 | Addendum T-027-3 |
| T-029 Choir | Year 30, month 7, day 15 | Addendum T-029-2 |
| T-030 Clockwork | Year 31, month 4, day 2 | Addendum T-030-2 |
Part III: Going through (the objects)
| File | Found | Where named |
|---|---|---|
| T-035 Still Watch | Year 34, month 9, day 2 | Addendum T-035-B |
| T-037 Rewind Clock | Year 36, month 1, day 27 | Addendum T-037-C |
Part IV: The planet and the pollution
| File | Found | Where named |
|---|---|---|
| T-046 Drifter | Year 43, month 1, day 9 | Addendum T-046-1 |
| File | Found | Where named |
|---|---|---|
| T-056 Toxic mutant | Year 48, month 9, day 30 | Addendum T-056-2 |
In the journal
Section titled “In the journal”The journal names this place in:
- Chamber log, widening, a terminal at the Institute's site
Generated on 2026-11-13 from the game at commit b8361f1, rebuilt with every release (a release's name ends in its commit, e.g. build-…-b8361f1).
Every number on this wiki is read from the game's data files, and every icon is the game's own pixel art.
Credits: who made the game, and every creator whose sounds it uses.