Gearwood Hill
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.
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 or sent anywhere. Progress is saved only in this browser, on this device. Names typed into a book stay on the device too.
The books work on any modern browser. Puzzles can be tapped, dragged or typed. A tablet is the most comfortable size.