Fiction
* _Hilo: Book 1: The Boy Who Crashed to Earth_ (2013)
* _Hilo: Book 2: Saving the Whole Wide World_ (2014)
* _Hilo: Book 3: The Great Big Boom_ (2015)
* _Hilo: Book 4: All the Pieces Fit_ (2016)
* _Hilo: Book 5: No More Good Guys_ (2017)
* _Hilo: Book 6: The Bad Guy Club_ (2018)
* _Hilo: Book 7: The Good Fight_ (2019)
* _Hilo: Book 8: The Art of the Steal_ (2020)
* _The Legend of Brightblade: Book 1_ (2021)
* _The Legend of Brightblade: Book 2_ (2022)
Nonfiction
* _The Big Book of Little Heroes: 100 Inspiring Stories of Good Kids, Great Causes, and How to Make a Difference_ (2016, co-authored with Erin McHugh)
* _Heroes Wear Masks: 50 Inspiring Stories of Everyday Heroes During the Pandemic_ (2021, co-authored with Erin McHugh)