The Library of House Arceuus is a large library in Great Kourend, overseen by Logosia, in which players may gain favour with the Arceuus House by helping NPCs in the lobby look for certain texts. Giving an NPC the correct text will result in 2.5% favour with the Arceuus House and a book of arcane knowledge. Also, if players have 60% favour, then they can get more favour by using reanimate spells. Depending on what spell used, they will get more favour.
Once players reach at least 20% favour, they may speak to Horphis, who seeks dark manuscripts. Each dark manuscript given will give players 5% favour with the Arceuus House and a book of arcane knowledge.
The location of the manuscripts vary between players, but the locations of books only vary between worlds and reset after 80-100 minutes. Players should speak to Biblia on the top floor for help in finding various texts around the library, as she tells you the floor level and the section of the floor where a requested book is located.
It is recommended to have light-weight/ weight-reducing clothing such as the graceful outfit, or multiple stamina potions. It is highly recommended that players speak to Biblia on the top floor to be told which room the requested book is located. The official world for group Kourend activity is World 10. Sharing book locations with other players is also recommended.
You may collect books other than those currently being requested to be more quickly prepared for future requests. If you bank your books to the south of the library, you may get more copies of those books from the same locations. The drop trick does not work. After you give a book to a customer, it is recommended to return to the same location and get another copy of the book, in case it is requested again. If you choose not to do this, however, and the same book is requested before the location change, the book will still be found at the same location. Around every 80-100 minutes, all of the locations of books and manuscripts change.
The quickest way to gain favour and experience is to coordinate with other players on finding books by sharing locations and collecting even the books you do not yet need. Players who do not want help from other players should go to a world with few players to increase the time between location resets, and take note of the locations of books. With few players online, the locations may stay the same for over an hour. If you wish neither to share book locations with other players nor to write down/memorise book locations, it is faster to search for dark manuscripts after 20% favour. However, manuscripts are more difficult to coordinate upon.
After reaching 20% favour, player can start helping Horphis in addition to finding books for customers. Horphis is a dark wizard interested in finding dark manuscripts. However, unlike books, you may only find the dark manuscript assigned to you, and you cannot run into any unless you speak to him. Once you are asked to find manuscripts, Biblia will tell you which room to search. There may be multiple manuscript locations in one room, so just because someone else finds a manuscript location in your room, you might not be able to get one from the same shelf, but it is likely.
List of texts in the Arceuus House Library
|Image||Title||Also known as||Author|
|Byrne's coronation speech||Speech of King Byrne I|
|Eathram & rada extract||An extract from Eathram & Rada||Anonymous|
|Hosidius letter||A letter from Lord Hosidius to the Council of Elders||Lord Hosidius IV|
|Ideology of darkness||The Ideology of Darkness||Philophaire|
|Killing of a king||Killing of a King||Griselle|
|Rada's census||Census of King Rada III||Matthias Vorseth|
|Rada's journey||The Journey of Rada||Griselle|
|Ricktor's diary (7)||Diary of Steklan Ricktor, volume 7||Steklan Ricktor|
|Soul journey||The Journey of Souls||Aretha|
|Transportation incantations||Transportation Incantations||Amon Ducot|
|Transvergence theory||The Theory of Transvergence||Amon Ducot|
|Treachery of royalty||The Treachery of Royalty||Professor Answith|
|Tristessa's tragedy||The Tragedy of Tristessa|
|Twill accord||The Royal Accord of Twill|
|Varlamore envoy||The Envoy to Varlamore||Deryk Paulson|
|Wintertodt parable||The Parable of the Wintertodt||Anonymous|
- On the day of release, the experience reward for books of arcane knowledge was significantly nerfed because the sheer number of people searching for books made helping and location-calling extremely easy, and helping customers granted exceptional Runecrafting experience.
- On the day of release, mithril seeds were used to mark the locations of books, but this became less effective as crowds thinned out over time.