This page names late-game areas and items. Puzzle answers are folded — open only the ones you need.
The six books: The Great Work IV – Rubedo, Upim's Fairy Tales, The History of Dragons, Koko's Sapphic Adventures, Dams and Weirs, and The Old Ones Beyond. Rubedo and Upim's Fairy Tales are outside the tower; The History of Dragons is a bestiary reward from Wourha. Players Players
Achievements tied to the tower
| Achievement | Condition | Players |
|---|---|---|
| Endless Pages | Reach the Tower of Knowledge. | 30.4% |
| Raging Tempest | Recover the Storm Gem. | 22.8% |
| Hell Transcribed | Defeat The Necronomicon. | 19.4% |
| Sparkling Clean | Clean up the Tower of Knowledge. | 7.2% |
| I'm Not Paying the Late Fee | Return all of the lost books. | 0.1% |
| A Lifetime's Work | Help Knowledge Keeper Wourha complete her research. | 0.0% |
The Tower of Knowledge also holds the Storm Gem, which switches on Endu's special-attack meter. Players
All six lost books (locations)
Knowledge Keeper Wourha's storage shelf needs six books. Collect them in any order. Players asked whether shelving order matters, and nobody has reported that it does. Players
1. The Great Work IV – Rubedo outside the tower
Show the Rubedo locationspoiler
Starting island: go to the cliff below the cemetery and find a cave entrance with an egg outside it. Go down the stairs inside. The book is on an altar to the right of the throwable (a stone cube) in the middle of the room. Reach the altar with air dashes from the stairs or from the throwable's pedestal. Players Players
2. Upim's Fairy Tales outside the tower
Show the Fairy Tales locationspoiler
Obmuer Temple: take the cave entrance near the raiders' shipwreck. From the water island, three air dashes from right to left reach it. Go through a dark tunnel to a hole with a giant tree. Drop in and air-dash straight onto the ledges near the top; if you fall too far, you'll need a Travel Crystal or Wing Stone Fragment to try again. Circle the ledge to a food item and a skeleton. The book is beside them, near some Putrid Chickets. Enemies here are tough for your level. Players Players
3. The History of Dragons
Show how to get The History of Dragonsspoiler
4. Koko's Sapphic Adventures
Show the Koko locationspoiler
Inside the main library room, the same room where Wourha gives you The History of Dragons. Players
5. Dams and Weirs
Show the Dams and Weirs locationspoiler
Library room: the bookcase next to the teleporter, on the bottom shelf. It is easy to walk past. Players
6. The Old Ones Beyond
Show The Old Ones Beyond locationspoiler
A secret wall above the entrance of the library room. Behind it, a skeleton enemy is holding the book and drops it when it dies. Players
The reward
Players report that shelving all six gives you a weapon and the Wodaso book. That book is one of four god books used in a later puzzle in the Record of Sin. Players
The flesh faces and the basement
The tower's lower levels are overgrown with flesh. Its moaning faces block the way.
- After you beat the tower's boss, your throwing daggers gain acid. Aim them at the moaning faces to clear the path. Players who felt trapped in the boss room were missing this. Players
- Below the tower, a Blood Key Stone vault opens once the flesh heads are cleared. Its loot reportedly includes a Rusted Greatsword and Spirit Oil. Players
- The achievement Sparkling Clean ("Clean up the Tower of Knowledge") has the internal name
cha_quest_meat, which points to the flesh. Official - The Sipeha god book is reportedly "deep under the Tower of Knowledge, next to some bats". Players
Boss: The Necronomicon
19.4% of all players have beaten it (2026-11-02). Player tips: Players
- Clear the way in first. No fog wall stops enemies from following you into the arena, and manticores in the boss room make the fight much harder. They also give good EXP.
- Strafe and throw. By this point you should have at least three throwing weapons. Homing throwables are very effective here.
- A thrown metal/stone cube reportedly interrupts its spin attack.
After the fight, the shop at Umbada's Trading Outpost sells a spare trident key. Players See trident keys.
Other tower secrets
- A secret door sits at the tower entrance. Another is reached by jumping out of a window for a food item and opening a wall on the way back in. Reaching the very top needs an endgame item. Players
- An egg sits across a gap near the tower. Players say one side of the gap has an invisible wall, so come back later and reach it from the other side. One Wind Gem is enough for the jump. Players Eggs like this are most likely the Orbewa Eggs for Erma's quest (see NPC quests).
- Wourha's research quest ("A Lifetime's Work") is reportedly finished by completing the bestiary, and she is one of the spirits tied to the True Holy Sword. Players
FAQ
Where are the library books in Queen's Domain?
There are six: The Great Work IV – Rubedo (a cave below the cemetery on the starting island), Upim's Fairy Tales (a dark cave in Obmuer Temple), and four in or around the library itself: The History of Dragons (from Wourha, for bestiary progress), Koko's Sapphic Adventures, Dams and Weirs (bottom shelf by the teleporter) and The Old Ones Beyond (behind a secret wall above the entrance).
What do you get for returning all six books?
Players report that shelving all six books gives a reward that includes a weapon and the Wodaso book, which is used in the Record of Sin book puzzle. It also counts toward the achievement "I'm Not Paying the Late Fee".
How do you beat the Necronomicon?
Players recommend killing the enemies on the way in first so they do not follow you into the arena, then strafing and using throwing weapons, especially homing ones. A thrown stone cube is reported to interrupt its spin.
I beat the library boss and I am stuck in the room. What now?
After the fight your throwing daggers gain an acid effect. Throw them at the moaning flesh faces to clear the way out.
Official store
Get Queen's Domain on Steam — $19.99 · also on PS5, Xbox Series and Switch 2
Sources
Labels: Official Steam store, Steam news or achievement schema · Steam stats global achievement rates (snapshot Nov 2, 2026) · Players Steam discussions and guides, not confirmed by the developer · Press coverage.
- Official Steam achievement list for Queen's Domain (names and unlock conditions) — 2026-11-02
- Steam stats Steam Web API GetGlobalAchievementPercentagesForApp (app 1799840) — global unlock rates snapshot — 2026-11-02
- Players Steam guide: "Starter Guide | Beginner Tips and Tricks" (TechRaptor) — 2026-10-31
- Players Steam guide: "Library Books" — 2026-11-01
- Players Steam discussion: "The library books" — 2026-10-31
- Players Steam discussion: "Book puzzle of Record of Sin" — 2026-11-01
- Players Steam discussion: "The Library boss needs nerf" — 2026-11-01
- Players Steam discussion: "Stuck in the library boss room after defeating it." — 2026-11-01
- Players Steam discussion: "Tower of Knowledge jump" — 2026-11-01
- Players Steam discussion: "Tower Of Knowledge Secret Doors" — 2026-11-01
- Players Steam discussion: "Beat the whale/water level boss, but still only have 3 trident emblems?" — 2026-10-31
- Players Steam discussion: "Looking for All 4 lenses for the Second Sight item" — 2026-11-01
- Players Steam discussion: "Blood Key Stone?" — 2026-11-01
Patches can move items and change numbers. Everything here was checked against v1.01.03 (Nov 1, 2026). See how we source.