Best Young Adult Books Sci Fi (2026): 5 Series and Standalones Compared

The best young adult books sci fi readers reach for ask a big question inside a fast story. We compared five on stated reading age, grade level, page count and series position. Two give full figures; three are listed on title alone.

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The picks

#	Product	Shelf Score	Buy
1	Illuminae	9.7/10	Buy on Amazon
2	Maze Runner Book 1 by Dashner	9.7/10	Buy on Amazon
3	Maze Runner Box Set by Dashner	9.7/10	Buy on Amazon
4	Kalyx	9.5/10	Buy on Amazon
5	The Giver by Lowry	9.4/10	Buy on Amazon

1

Illuminae

Amie Kaufman·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

Book 1 of The Illuminae Files: a space survival story at 624 pages.

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Pros

• 624 pages, the longest here
• Reading age 14 - 17, grade 9 - 12
• Book 1 of 3

Cons

• 624 pages is a commitment
• A reprint of April 25, 2017
• Space survival; high stakes

2

Maze Runner Book 1 by Dashner

James Dashner·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

The first book in the Maze Runner series, about a teen who wakes in a walled maze with no memory and has to find a way out.

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Pros

• Book 1 of 5, so a reader can try the series with one volume
• 375 pages, a middle length that is easier to commit to than the full set
• Grade level 7 to 9 and a reading age of 10+ years give a clear range for a teen reader
• The description names a survival plot and a maze mystery to solve, which keeps the first book moving

Cons

• Book 1 of 5, so the story continues in four more books
• The description mentions a deadly maze where no one has made it through alive, so death and danger are central
• The reading age is marked as from customers rather than stated by the publisher
• No edition is stated, and the listed publication date is August 24, 2010

3

Maze Runner Box Set by Dashner

James Dashner·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A boxed set of all five paperback Maze Runner books, following a boy who wakes up inside a walled maze with no memory.

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Pros

• All five books in one purchase, so a teen who finishes Book 1 can continue without a second order
• 1952 pages across the set, a long read for a teen who wants a full series
• Grade level 7 to 9 suits a teen reader, and the listed reading age of 12+ years is also a teen level
• The description promises a survival plot with secrets to uncover about WICKED, the group behind the maze

Cons

• 1952 pages is a large commitment for a reader who wants a shorter book
• The reading age of 12+ years is marked as from customers, not stated by the publisher
• The description mentions a deadly maze and says no one has made it through alive, so death and danger are central
• Buying the set commits to five books before the reader knows whether the series suits them

4

Kalyx

Karen Lynch·9.5/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A sci-fi thriller by Karen Lynch, from July 22, 2025, for ages 14 - 18.

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Pros

• The newest book here, from 2025
• Reading age 14 - 18 years stated
• A thriller, per its title

Cons

• No print length is stated
• A 2025 first edition
• No grade level is stated

5

The Giver by Lowry

Lois Lowry·9.4/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A dystopian Book 1 for readers who like a thoughtful story about a boy who questions an orderly community.

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Pros

• The listing states it won the Newbery Medal
• Book 1 of 4 in the Giver Quartet, with companion novels named for readers who want to continue
• At 240 pages, it is a manageable length for a high school reader

Cons

• Grade level 8 to 9 sits below most high school readers, and the reading age of 10+ is marked as from customers
• Dystopian rather than magical, so readers who want a fantasy world may find it a different genre
• The description points to themes of control and conformity, which some families will want to discuss

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Compare the picks

Book details as published on each listing, collected 22 October 2026.

How we scored them

The Shelf Score weighs fit, contents and edition, value, and the listed reading age or grade level. Illuminae and Kalyx state their ages; the three title-only listings state neither. How we pick explains the weights.

Scores run from 9.2 to 9.8: each book’s point total is placed on that range, so more points always means a higher score. Reading age or level counts on a list where at least one listing gives one, and a book whose listing gives none then scores zero on it. Where no listing gives one, the score is taken over the other 85 points. Books carry no warranty, so warranty is not scored.

How to choose the best young adult books sci fi

Space, maze or society

Three premises, three doors: Illuminae is space survival, The Maze Runner the enclosed-world puzzle, The Giver the quiet dystopia. More range is on our best sci fi books about space list.

One book or the whole series

The Maze Runner appears twice, as Book 1 and as the 5-book boxed set: sample with the single book, commit with the set. Kalyx stands apart as a 2025 thriller.

Before you buy

• Three listings state no page count or age; check before ordering.
• Illuminae runs 624 pages, a large book.
• The boxed set overlaps Book 1; do not buy both.

Frequently Asked Questions

What age are these sci-fi books for?

Illuminae at 14 – 17 years, Kalyx at 14 – 18 years. The other three state no age.

Which book is the longest?

Illuminae, at a stated 624 pages.

Which series should a new sci-fi reader start?

The Maze Runner for the puzzle, The Giver for thought, Illuminae for scale.

Is the boxed set good value for a keen reader?

It holds all five Maze Runner books in one box, for a reader certain to finish.

Still deciding? Our top pickIlluminae

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Related lists

See every kids and teens list. Also see our best ya fantasy and sci fi books and our best sci fi books about space exploration.

More lists: browse young adult books, middle grade books and fantasy books.