More like Pendragon (Boxed Set)

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Tolkien's legendariumUniverse
universe163 books1923
Set in secondary world.
“Before the seas were bent and the mountains raised, there was Music — and from that Music came Arda, and in the west of Middle-earth the long defeat and stubborn hope of those who dwell there.”
from the catalogue
Start with The Fellowship of the Ring →
includes The Hobbit, The Lord of the Rings, The History of Middle Earth, The Fall of Gondolin, The History of the Lord of the Rings
His Dark MaterialsUniverse
universe13 books1995
Fantasy, adventurous in tone, about coming of age, set in parallel universe.
“In a world like ours and unlike it, every human soul walks outside the body in the shape of an animal — a daemon, who speaks, who cannot be lied to, and who settles into one fixed form only when childhood ends.”
from the catalogue
Start with Northern Lights →
includes His Dark Materials, The Book of Dust
NarniaUniverse
universe38 books1950
Set in secondary world.
“Once there is a wardrobe at the back of a spare room, and behind the fur coats the wood gives way to snow, and a lamp-post burns alone among the trees.”
from the catalogue
Start with The Lion, the Witch and the Wardrobe →
includes Narnia, Narnia Solo Adventures
The Keys to the KingdomSeries
series7 books2003
Set in otherworld.
Start with Mister Monday →
The Princess and the GoblinSeries
series2 books1871
completed
Set in secondary world.
“Strahan had published the story and illustrations as a serial in the monthly magazine Good Words for the Young, beginning November 1870.”
from the catalogue
Start with The Princess and the Goblin →
RailseaNovel
China Miévillestandalone novel2012
Steampunk and weird fiction, set in secondary world.