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Zero Sum Game

S.L. Huang

Ages 14–18

Readers rate it 3.7 (43 on Hardcover)

337 pages · Released Sep 5, 2026

Content report card

Zero Sum Game parent’s guide: what’s inside

Medium confidence

What it offers

Educational value

A note for parents

Zero Sum Game is a fast-paced sci-fi thriller centered on a protagonist with mathematical superpowers who becomes entangled in a high-stakes conflict involving mind control and psychological manipulation. The story contains frequent action sequences with gunfights and combat, some profanity, and mature themes around identity and psychological violation, making it better suited for older teens. While the protagonist shows resilience and resourcefulness, the darker psychological elements and persistent violence place it above typical YA fare.

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From the publisher

Cas Russell is good at math. Scary good. The vector calculus blazing through her head lets her smash through armed men twice her size and dodge every bullet in a gunfight, and she'll take any job for the right price. As far as Cas knows, she's the only person around with a superpower...until she discovers someone with... Cas Russell is good at math. Scary good. The vector calculus blazing through her head lets her smash through armed men twice her size and dodge every bullet in a gunfight, and she'll take any job for the right price. As far as Cas knows, she's the only person around with a superpower...until she discovers someone with a power even more dangerous than her own. Someone who can reach directly into people's minds and twist their brains into Moebius strips. Someone intent on becoming the world's puppet master. Cas should run, like she usually does, but for once she's involved. There's only one problem... She doesn't know which of her thoughts are her own anymore.

Shelved under

  • from-audible
  • Fantasy
  • Adventure
  • Science Fiction
  • Thriller
  • Mathematics
  • Fiction
  • Fiction, thrillers
  • Fiction, fantasy, general
  • Fiction, science fiction, general
  • Fiction, science fiction, action & adventure
  • Fiction, thrillers, general

Books in the Cas Russell series

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ISBN 9781250180254

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