More like Beyonders: The Complete Set

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NarniaUniverse
universe38 books1950
Fantasy and portal fantasy, 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
Tolkien's legendariumUniverse
universe163 books1923
Fantasy, 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 Fall of Gondolin, The History of Middle Earth, The History of the Lord of the Rings
BeyondersSeries
series4 books2011
Epic fantasy and portal fantasy, adventurous in tone, about quests and transported to another world, set in secondary world.
“Jason Walker has often wished his life could be a bit less predictable--until a routine day at the zoo ends with Jason suddenly transporting from the hippo tank to a place unlike anything he's ever seen.”
from the catalogue
Start with A World Without Heroes →
The Princess and the GoblinSeries
series2 books1871
completed
About coming of age.
“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 →
RedwallUniverse
universe32 books1986
Fantasy, adventurous in tone, about quests, set in secondary world.
“Ring the Joseph Bell and lay the long tables, for a tale is starting.”
from the catalogue
Start with Redwall →
includes Redwall, The Tribes of Redwall, Redwall Audio Version, Redwall Picturebooks
The Ivory KeySeries
series2 books2022
About magical artifacts and sibling rivalry.
Start with The Ivory Key →