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Cover of Engines of Reason

Engines of Reason

Adrian Tchaikovsky (2026-09-01)

Subgenre
Age groupAdult 18+
Content ratingPG-13
Pages (Standard (250-400))
SeriesElder Race #
Setting
CSM age13

Content levels

ViolenceModerate
Sexual contentNone
LanguageMild

Trigger warnings

Betrayal

Synopsis

Visit a world where sorcery intertwines with science by multiple Hugo nominee Adrian Tchaikovsky in this highly-anticipated sequel to his hugely popular Elder Race. On a planet where stories govern identity, where science and magic are a merely point of view, a fallen princess, a reluctant wizard, and a precocious child must unravel the past to shape the future. Betrayal, ancient myths, and the clash of worlds converge in this spellbinding tale of courage, friendship, and self-discovery. A profound exploration of identity, memory, and discovery from one of science fiction’s most compelling voices. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

Tags

Science FantasyPhilosophical FantasyAnthropological SF

Is Engines of Reason appropriate for my child?

Suitable for most readers 13 and up.

This philosophical science fantasy sequel explores identity and perspective through the lens of characters navigating worlds where science and magic are matters of viewpoint. Contains moderate fantasy violence and themes of betrayal, but focuses on self-discovery and friendship.

What to know going in

This book has moderate violence, no sexual content, and mild language. Content notes include betrayal.

Publisher age: Adult·Our content rating: 13+

Publisher ages reflect reading level; our rating reflects content maturity — they can differ.

Who'll love this

Teens will appreciate the mind-bending exploration of how stories shape reality and the adventure of characters unraveling ancient mysteries across different worldviews.