Looking for excellent children's books about codes, ciphers and puzzles? This collection brings together Bookroo's highest-rated and most useful picks in one place.
Start with our editorial favorites, then browse recommendations organized by reading stage to find the right book for your reader.
A young explorer uncovers a family secret that threatens his future at an elite academy.
A mysterious inheritance thrusts Avery into a deadly game of secrets and survival.
Sixteen heirs must solve a cryptic puzzle to claim a fortune. But what is the real game?
In 2045, a virtual treasure hunt turns deadly as rivals vie for control of a digital empire.
Twins on a road trip face mysterious threats and secret codes.
An orphan unravels a hotel's magical secrets, risking everything to break its curse.
A new student uncovers secrets and unexpected friendships at their school.
Two siblings try to solve a riddle to save their home from a giant's floods.
A Navajo youth becomes a secret weapon in WWII, using an unbreakable code.
Can Ben find his voice to win the jelly bean riddle challenge?
Sturdy, inviting books about codes, ciphers and puzzles for the youngest readers and listeners.
Can you imagine a potato on a bike? Discover more silly surprises inside!
Guess the ocean creatures hiding under the flaps in this rhyming riddle book.
Guess the hidden rainforest animals in this rhyming lift-the-flap adventure.
Discover state secrets through rhyming riddles and vibrant clues.
Discover state secrets through rhyming riddles and colorful clues.
Illustrated read-alouds about codes, ciphers and puzzles for preschool and elementary-age readers.
Solve riddles and uncover hidden objects in captivating photos.
A young Navajo boy is forced to attend a boarding school where he is forbidden to speak his native language, but later uses it to help the US military during World War II.
Uncover hidden holiday treasures in a festive search-and-find adventure.
Can you solve the toughest I Spy riddles yet?
Why does Miss Milly prefer green over red? Unravel the riddle!
A cryptologist unravels codes to dismantle spy rings and save lives.
Solve mind-bending puzzles with hidden objects and unexpected twists.
Magicians' props vanish. Can Bertie solve the mystery before the show is ruined?
A worm's journey through the alphabet of books.
Discover hidden math puzzles in everyday life and solve them with fun and creativity.
Four tales intertwine, revealing a single, mysterious story.
Search for hidden treasures in a springtime adventure.
Longer stories about codes, ciphers and puzzles for developing and independent readers.
A young boy is recruited by the Queen of England to be a spy and must use his skills to stop a villainous plot.
A hidden traitor threatens Amy and Dan's family. Can they uncover the mole before it's too late?
Teenagers time-travel to 1955 Disneyland to retrieve a magical pen, facing unexpected dangers and dark secrets.
Can hidden books and a legendary code stop an arsonist's fiery trail?
Two kids must escape a dark Wonderland before the Queen of Hearts captures them.
A boy races to outsmart kidnappers and find hidden treasure.
Cruz faces danger and secrets in Africa, risking everything for answers and a glimpse into his future.
A young detective and her butler tackle secret missions and outsmart villains.
Young detectives go undercover as skaters to crack a coded mystery.
A group of friends use coding skills to solve problems in a fantasy world.
Cruz races against time to solve a mystery before his 13th birthday changes everything.
A mystery game on Alcatraz turns dangerous as sabotage threatens Emily and James.
