Why number pyramids?
Small puzzles, real practice
Every brick is the sum of the two below it. That one rule gives you:
- Mental arithmetic in small bites. Lots of adding and subtracting, each sum small enough to enjoy.
- Logical reasoning. Each puzzle has one answer you can prove, so you reason it out instead of guessing.
- Working both ways. Build up from the base, or work back down from the top.
- Instant self-checking. One wrong brick spoils the rows above, so you learn to check your own work.
- A calm, screen-free break. Pencil, paper and a puzzle that fits in a bag. For ages 10 to adult.
The main expedition
Escape the Pyramid
A take-along math puzzle adventure for teens and adults. Open the locked chambers one number pyramid at a time, with hints and full answers in the back. Pick the level that suits you, or take the whole escape.
Cover images are the ones we have on file. The book you receive may show a slightly different cover.
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Level 1 · Easy
45 locked chambers and 6 treasure rooms.
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Level 2 · Medium
45 locked chambers and 6 treasure rooms.
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Level 3 · Hard
45 locked chambers and 6 treasure rooms.
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The Complete Escape
All 336 locked chambers in 12 wings.
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Also in German, French, Spanish and Japanese
Each edition opens on the Amazon store for its language.
Deutschamazon.de
Flucht aus der Pyramide
Françaisamazon.fr
Évasion de la pyramide
Españolamazon.es
Escapa de la pirámide
Deluxe hardcover editions
Our biggest gamebooks, in hardcover
The same puzzle adventure gamebook idea on a grander scale: more doors, new skills to learn and a secret alphabet to crack, bound in a hardcover made to last. Don't read them in order. Solve each puzzle, then turn to the page it reveals. Ages 10 to adult.
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Hardcover
Isekai Pyramid Quest: Book One, The Storm Lord's Sky Pyramid
Our biggest gamebook. 100 puzzle doors in five realms, 16 skills to learn, three quests in any order and three endings, with picture-lock trials and 18 true facts. 350 pages.
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Hardcover
The Sphinx's Riddle Pyramid: Twelve Riddle Gates to the Star Chamber by Sunrise
Crack the Sphinx's secret alphabet. Twelve riddle gates, 60 puzzle doors, 16 secret signs and three endings, with 18 true desert and star facts. 220 pages.
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Hardcover
Escape the Conservatory After Dark: Twelve Locked Plant Houses from the Palm House to the Glass Pyramid's Apex
Twelve locked plant houses to open before sunrise, in a hardcover puzzle adventure gamebook. 216 pages.
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Hardcover
Escape the Stadium After Dark: Twelve Locked Gates from the Turnstiles to the Pyramid Trophy Room
Twelve locked gates to open before sunrise, in a hardcover puzzle adventure gamebook. 218 pages.
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Puzzle adventure gamebooks
More expeditions, new settings
These are puzzle adventure gamebooks, so don't read them in order. Solve each math puzzle, then turn to the page it reveals. Ages 10 to adult.
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Escape the Observatory After Dark
Climb nine locked floors to the Pyramid Skylight, with orbits and night sky facts.
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Escape Thunder Lizard Valley
Climb nine terraces to the Pyramid Lookout, counting footprints, with dinosaur facts.
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Escape the Giant's Castle
Collect the tools, open every door, and climb nine locked floors to the Pyramid Tower by dawn.
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Escape the Dwarf Halls
Climb nine locked halls of the Pyramid Mountain, with Arch Rings and true building facts.
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Escape the Great Pump House
Climb nine locked halls to the Fountain Pyramid, with pump machines and true water facts.
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Escape Zombie Wharf
A comic adventure: climb nine locked quarters to the Salt Pyramid, with true facts about pickles and the sea.
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Escape the Jungle Step Pyramid
Climb nine jungle terraces through 45 locked chambers.
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Escape the Sleepwalking Town
A comic adventure: climb nine locked streets to the Wake-Up Pyramid, with true sleep facts.
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Escape Anaconda Island
Cross nine locked walkways to the Lookout Pyramid, with true snake facts.
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Escape the Bakery After Dark
Bake through nine locked rooms by dawn, with 10 vegan bread recipes.
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The Grand Pyramid Hunt
A math pyramid puzzle hunt. Sail twelve isles to the summit by sunset.
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Escape the Labyrinth
Choose your road through 45 locked chambers.
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Escape the Cipher Vault
Crack an ancient picture alphabet to open the vault.
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Escape Through Time
Read the ancient numerals of Egypt, Babylon, China, the Maya and Baghdad.
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Escape the Ice Pyramid
Go down nine frozen rows through 45 locked chambers.
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Escape the Crystal Mine
Go down nine glittering levels through 45 locked chambers.
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Escape the Sunken Pyramid
Climb nine sunken levels through 45 locked chambers.
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Escape the Night Train
Cross nine locked carriages to the pyramids by dawn.
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Escape the Museum After Dark
Climb nine locked galleries to the Pyramid Hall by dawn.
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Escape the Mansion After Dark
Open nine locked wings to the Pyramid Folly by dawn.
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Escape the Wildlife Sanctuary After Dark
Open nine locked yards to the pyramid by dawn.
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Winter Countdown Escape
The Clockmaker's Pyramid: a 24-day math puzzle adventure.
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A look inside
This is what a gamebook page looks like
Every chamber is one page: read the scene, solve the number pyramid, then turn to the page in the door brick. Five chambers from five different themed gamebooks, unsolved.
Glyphs, a map, hints and true facts
There is more than puzzles. Each door has a glyph to check, there is a map of the climb, hints that nudge without giving the answer away, and a true fact on every floor. Pages from Escape the Giant's Castle.
Field notes
Learn the puzzles, tour the books
Step-by-step guides and stories from inside our books.
Portrait Pairs: When a Gilt Frame Multiplies Two Bricks
A frame holds two bricks and its plaque shows their product. Try each pair of factors and let the pyramid decide. A lock from Escape the Mansion After Dark.
Negative Numbers in a Pyramid: Moving Left on the Number Line
Adding a negative number is just a step to the left. A number line, a pyramid and a few easy habits make negatives feel ordinary.
Number Bank Pyramids: Place Every Number Once
An empty pyramid and a bank of numbers. Each number is used exactly once. A worked sample, a 20-second video and a pyramid to try yourself, with the one rule you need to read the hidden digits.
More puzzle books
Beyond the pyramid chambers
Number pyramid puzzles in other forms. Dozens of kinds, from logic grids to picture puzzles.
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Ink-Blot Pyramids
Missing-digit logic puzzles: 120 math brain teasers from easy to expert, for ages 10 to adult.
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Pyramid Case Files
60 detective cases to solve with number pyramids, evidence and deduction, with full solutions. For teens and adults.
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Pyramidoku
120 number logic puzzles: place the numbers so every block is the sum of the two below it.
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Target Sum Pyramids
100 two-in-one puzzles: solve the pyramid, then hunt for the hidden sums.
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Symbol Pyramids
120 picture-algebra puzzles: every picture hides a number. Ages 9 to adult.
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Number Path Pyramids
130 pyramid-shaped number path puzzles for teens and adults.
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Mystery Picture Pyramids
34 hidden pictures to reveal: solve the pyramids, join the dots, shade the bricks.
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Math Pyramid Maze
100 two-in-one number puzzles: solve the pyramid, then trace the maze. Full solutions.
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Linked Math Pyramids: Book One
130 connected number pyramids in three linked styles, easy to hard, with full solutions.
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Pyramid of Pyramids
100 linked Triforce number pyramid puzzles, with full solutions.
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Math Pyramid Equation Puzzles: The Complete Course
All 10 levels from one variable to extreme, 4 to 9 rows.
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Books for an occasion
Puzzle books for birthdays, get well and more
Big mixed collections of number pyramid puzzles in many kinds, themed for the person you are giving them to.
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Birthday Math Pyramids
520 number pyramid puzzles, easy to hard, in 10 kinds, with full solutions.
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Get Well Soon Math Pyramids
506 number pyramid puzzles, easy to hard, in 10 chapters, with full solutions.
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Retirement Math Pyramids
448 number pyramid puzzles, easy to hard, in 8 kinds, for all your new free time.
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Winter Wonderland Math Pyramids
536 number pyramid puzzles, easy to hard, in 10 chapters, for the whole family.
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Large print and big collections
Bold & Easy and the Big Books
Large print puzzle books for adults and seniors, and big collections of hundreds of puzzles, in English, German, French, Spanish, Dutch and Japanese.
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Bold & Easy Math Pyramids, Book 1
200 large print number pyramid puzzles for adults and seniors, one puzzle per page.
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The Big Book of Math Pyramids
504 number pyramid puzzles for adults in three levels, easy to hard, with full solutions.
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Party kits and games on Etsy
Puzzle games you print and play at home
Instant downloads: escape rooms, treasure hunts and countdown games with props to cut out. Each one is a game, not a book.
Moon Base Escape Room
Ages 8 to 12
A printable space party game. Three squads, 13 puzzles and 6 expert puzzles, cut-out props and about 60 minutes of play. Host script, hint cards and answer key included, in US Letter, A4 and tablet versions.
Printable Escape Room Bundle, Winter Holiday Family
Families
Three printable winter escape rooms in one download: Frost Village Puzzle Hunt, Cipher Wheel Gift Hunt and Clockmakers' Midnight. Cheaper than buying them one by one.
See it on EtsyPrintable Escape Room Bundle for Kids, Birthday Parties
Ages 6 to 12
Four printable party escape rooms in one download: Fossil Camp, The Toucan's Lost Map, Puffcloud Expedition and Moon Base. Cheaper than buying them one by one.
See it on EtsyPrintable Detective Escape Room Bundle
Ages 8 to adult
Three printable mystery escape rooms with no crime in one download: The Case of the Vanishing Trophy, The Bookbinder's Riddle and Midnight Luggage Mix-Up. Cheaper than buying them one by one.
See it on EtsyPrintable Math Escape Room Bundle, Grades 5 to 8
Grades 5 to 8
Four printable classroom math escape rooms in one download: Roller Coaster Repair Crew, Tour Bus Breakdown, The Pi Bakery Mix-Up and The Zip-Line Inspection. Cheaper than buying them one by one.
See it on EtsyPrintable Escape Room Bundle, Reading, Music, Coding and Science
Grades 2 to 6
Four printable classroom escape rooms in one download: The Bookmobile Mix-Up, The Mixed-Up Music Box, Recycling Robot Reboot and Comet Watch Countdown. Cheaper than buying them one by one.
See it on EtsyNote Pyramid Workshop
Grades 3 to 5
A music escape room that runs in the browser, with sound, and also prints as a PDF. Pupils learn to read notes, and the game checks their answers.
See it on EtsyThe Mixed-Up Music Box
Grades 3 to 5
A printable music class escape room for a classroom of teams, or children at home. Read notes at each station to put the music box back in tune.
See it on EtsyThe Bookmobile Mix-Up
Grades 2 to 3
A printable reading escape room for a classroom of teams, or children at home. Sort out the mixed-up bookmobile one station at a time.
See it on EtsyMath Escape Room Bundle, Grades 1 to 7
Grades 1 to 7
Five printable classroom math escape rooms in one download: The Hundred Gumballs Count-Up, Kite Festival Rescue, Ice Cream Truck Meltdown, Roller Coaster Repair Crew and Tour Bus Breakdown. Cheaper than buying them one by one.
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Digital decks on Boom Learning
Self-checking decks you play on a screen
Boom Cards give instant feedback and hints, with sound on every card. Pupils work through them on a tablet or computer, no printing.
Read Music Step by Step: Treble and Bass Clef Bundle
Grades 2 to 6
Eight self-checking decks that teach note reading in order: treble and bass clef, note words, the grand staff, ledger lines and two escape rooms, with sound on every card. Cheaper than buying them one by one.
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Ear Training Games Bundle
Grades 2 to 5
Four ear training games in one bundle: Higher or Lower, Step Skip or Repeat, Match the Tune and Find the Wrong Note. 20% off buying them one by one.
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Ear Training Step by Step Bundle: Hear It, Then Name It
Grades 2 to 5
Six steps from hearing higher and lower to naming every note of the C major scale by ear. A growing bundle, 20% off.
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Name the Note by Ear: The Whole C Major Scale, Do to Do
Grades 3 to 5
Ear step 6. Name every note of the C major scale by ear. 29 cards, 20 scored.
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Games and web apps are on the way
We plan to host puzzle games you can play right in the browser. They will appear on this page.