Gearwood Hill Explorers
Help Bolt the robot and Grandpa Ziggy on puzzle adventures. Each puzzle you solve gives one letter, and the letters spell the password that opens the final lock. Every book stands on its own.
Gearwood Hill Masterminds
Bigger Gearwood Hill adventures for confident puzzlers: codes, logic, science, maths and a mystery to crack. Ten puzzles in most books, one password, and every book stands on its own.
Gearwood Hill Team-Up
Puzzle adventures for two. An older Codebreaker and a younger Lookout each hold half of every clue, so nobody can solve a puzzle alone: you have to talk, describe and listen. Play side by side on one tablet, or each on your own device. Every book stands on its own.
The Lost Letters of Lark Lane
A story series with puzzles. Juni and Theo find old letters hidden in the wall of the Lark Lane Post Office, and every bundle starts a trail of clues. Read the books in order: the mystery of K. runs through all five.
For grown-ups
Children read a chapter, then solve the puzzle that comes next. The next page stays locked until the puzzle is solved. Every puzzle has up to three hints.
Every page has a read-aloud button (the speaker at the top). The pen or gear button opens a grown-ups panel with the answers, a page list and a reset button.
Nothing is collected from children: no accounts, ads or tracking. Progress, and names typed into a book, are saved only in this browser on this device. Privacy policy
The books work on any modern browser. Puzzles can be tapped, dragged or typed. A tablet is the most comfortable size.