Universe

Books like Delta Underground Operatives: 9 series to read next

Delta Underground Operatives is fantasy and science fiction, set in secondary world. The 9 series below are ranked by how much of that they share — each card says which parts.

Delta Underground Operatives is 22 books across 12 series, 2023–2025.

“The operatives who don't work there would tell you different — if talking about it weren't a firing offense, or something worse than firing.”
from the catalogue description

The Delta Underground Operatives page →Narrow this list →

Tolkien's legendarium
Earthsea
Grishaverse
Guardians of Ga'hoole
Throne of Glass
His Dark Materials
Discworld
Tortall
Stephen King multiverse

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 description

Reading order →

EarthseaUniverse

universe19 books1964

Epic fantasy, reflective in tone, about wizards.

“There is a lesson every wizard of Earthsea learns young: to know a thing's true name is to hold its whole being, and to speak it is to move the balance of the world.”
from the catalogue description

Reading order →

GrishaverseUniverse

universe19 books2012

“Saints are canonized here the way soldiers are buried elsewhere — quietly, and too often.”
from the catalogue description

Reading order →

Guardians of Ga'hooleSeries

seriesKathryn Lasky & Kathryn Huang17 books2003

Epic fantasy, about war.

“Apart from the main series, there are a few more books and spin-offs set in the same universe.”
from the catalogue description
Wikipedia CC BY-SA 4.0

Start with The Capture →

Throne of GlassSeries

seriesSarah J. Maas & Lynette Noni15 books2012

Epic fantasy.

“As the story progresses, Celaena forms unexpected bonds and uncovers a conspiracy amidst her adventures.”
from the catalogue description
Wikipedia CC BY-SA 4.0

Start with Throne of Glass →

His Dark MaterialsUniverse

universe13 books1995

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 description

Reading order →

DiscworldUniverse

universe84 books1983

Funny in tone.

“Death speaks IN SMALL CAPITALS and rides a horse called Binky.”
from the catalogue description

Start with Guards! Guards! →

TortallUniverse

universe25 books1983

“In Tortall she does it anyway — and earns the right the hard way, through bruises, cold mornings in the training yard, and the slow winning-over of people who swore she'd fail.”
from the catalogue description

Reading order →

Stephen King multiverseUniverse

universe46 books1967

Dark in tone.

“The man in black fled across the desert, and the gunslinger followed.”
from the catalogue description

Start with The Gunslinger →

Why these

No sales rank, no star ratings, no readers also bought.

Shared terms are not a promise that a book feels the same. Two series can be far-future political intrigue and read nothing alike — what the ranking can say is what they are about, and each card says which parts it shares.

Questions readers ask

What should I read after Delta Underground Operatives?: Tolkien's legendarium — the closest match to Delta Underground Operatives on what it is about, not on what sells.
Where do I start with Delta Underground Operatives?: The Improbable Pair. It is the entry the catalogue recommends for Delta Underground Operatives, which is a whole world rather than one run.
How big is Delta Underground Operatives?: Delta Underground Operatives is 22 books across 12 series, 2023–2025.

Books like Delta Underground Operatives: 9 series to read next

Read next in Delta Underground Operatives

Why these

Questions readers ask

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