Spoilers: this guide reveals book locations, puzzle solutions, quest outcomes and later areas. Open the sections when you are ready.
Tower of Knowledge: Missing Books
Community guides and players describe a Tower of Knowledge notice asking you to return six books to themed, numbered shelves. This is separate from the Record of Sin puzzle.
Reveal the Missing Books shelf solution and locations
The shelves are numbered by theme, and the six books are reported both inside and outside the tower. Guides disagree on Rubedo’s location; check both reports below.
| Shelf | Book | Reported location |
|---|---|---|
| I | The Great Work IV – Rubedo | Reported by a community guide in a cave below the starting island graveyard; another community guide instead reports it in the tower. |
| II | The History of Dragons | Reported by a community guide as Wourha’s research reward. |
| III | Dams and Weirs | Reported by a community guide on a ground-floor shelf near the tower waypoint. |
| IV | Upim’s Fairy Tales | Reported by a community guide in a hidden cave near Obmuer Temple, outside the tower; this location has only one source and guides disagree about which two books are outside. |
| V | The Old Ones Beyond | Reported by a community guide in a secret room with Archivist Inha’s remains in the tower. |
| VI | Koko’s Sapphic Adventure | Reported by a community guide in the upper tower, in Wourha’s area. |
Locations are reported by a community guide; its Rubedo location conflicts with another community guide, as shown above. These locations have not been independently playtested here.
Guides report that returning all six opens Rare Artifact Storage and completes the “I'm Not Paying the Late Fee” achievement objective.
Players report a Wodaso book as a reward, but sources disagree about its location and relationship to the reward. Do not rely on a guaranteed item or pickup point.
Sources: a community guide, Steam player discussion, another community guide and a community guide; builds not stated, checked November 7, 2026.
Record of Sin: four gods
Record of Sin is a separate book puzzle involving four gods. Its goal is to match books to their corresponding slots.
Reveal Record of Sin symbols and book clues
Players report matching each book’s cover symbol to the corresponding room or slot:
| Symbol | God |
|---|---|
| Circle | Sipeha |
| Eight-pointed star | Puwema |
| Cross | Wodaso |
| Three diamonds | Jigeki |
Player clues connect Wodaso to the six-book quest, Sipeha to the depths of the tower, Puwema to the small tree area reached by Chef Gagi’s spiral staircase, and Jigeki to a hidden room near the throwing weapon in Obmuer Temple. The Wodaso location remains uncertain.
The reward for this puzzle is unconfirmed.
Sources: Steam player discussion and a community guide; builds not stated, checked November 7, 2026. The accounts may share a source.
Tower-top book slots
Community guides describe a separate book-slot door mechanism at the top of the tower.
Reveal the separate tower-top book door
Community guides report another door mechanism at the top of the tower using books in slots, separate from the six missing books. One guide says any book works; the number of slots is unconfirmed.
Sources: a community guide and a community guide; builds not stated, checked November 7, 2026.
Continue with the collectibles checklist or the areas guide.