Most of our gamebooks are about a single place. The Grand Pyramid Hunt is about a whole archipelago. It is a math pyramid puzzle hunt across twelve isles, and it is our biggest gamebook at 214 pages.
How the hunt is built
- Twelve isles in a ring. The Sunstone Isles sit in a clock ring around the Great Isle, and your day runs from 7 am to 6 pm.
- A new kind of lock on every isle. The twelve isles bring twelve kinds of lock, one new one on each, so there is always something fresh to learn.
- A chain of locks on each isle. Each isle opens with a scene and a medallion, then gives you six chained locks to solve.
- An Isle Stone to finish. The answers from the isle's locks feed an Isle Stone, a bigger pyramid whose door leads on to the next isle.
- A summit at the end. After all twelve isles, a summit spread draws everything together in three five-row pyramids, and its capstone door is the ending.
The people and the mystery
Captain Juno Quay sails you from isle to isle, with Pouch the pelican for company. Along the way you will find blue shells and a missing name, and the keystones you collect on each isle are what finally say who left them. We will not spoil it.
A worked taste
Every lock still rests on the rule you know: every brick is the sum of the two below it. Here is the smallest version of a chain, for flavour:
Start from the bottom
Bottom row 8, 13 and 11. Add neighbours: 8 + 13 = 21 and 13 + 11 = 24.
Reach the top
21 + 24 = 45. In the book, answers like this one become entries in an Isle Stone.
Who it is for
This one is for people who like a long adventure. Pick it up if you have enjoyed the smaller gamebooks and want a campaign. It is not read in order: you solve, you turn to the page your answer reveals, and you follow the tide.
How a page looks in the book

A low-resolution page from The Grand Pyramid Hunt, so you can see the layout. Nothing on it is solved.
Books mentioned

The Grand Pyramid Hunt
A puzzle adventure gamebook and math pyramid puzzle hunt of 214 pages: sail twelve isles to the summit by sunset. It is a long, big book, not a quick one.
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