For KDP Publishers, Etsy Sellers & TPT Creators Who Are Tired of Making the Same Books as Everyone Else
The Spy & Mystery Genre Is Worth $22.5 Billion.
Every Other Activity Book Tool Forgot It Existed.
One massively underserved genre. Content you can't create with any other software - for every age group, every platform, and every publisher who's ready to stop blending in.
Five puzzle generators. Cipher Crackers Anagram Missions, Code Breaker Challenges, Secret Message Decoders, Code Word Puzzles.
Smart people are profiting ...
KDP and Etsy publishers have a "Blue Ocean" opportunity right now.
Founder Pricing Ends When The Launch Closes - Get in early. Build your catalog before everyone else catches on.
★ Get Instant Access Now For Just $37 ★
Think about the last time you watched someone get completely absorbed in a puzzle.
A kid hunched over a mystery book, refusing to put it down. A teenager solving clues like their life depended on it. An adult saying “just one more” at 11 PM — and meaning it.
What about you?
Remember when YOU solved a puzzle — and it actually felt exciting? When hidden messages felt magical? When mystery books made you feel smart? When puzzle-solving felt like an adventure instead of busywork?
That's not just entertainment. That's obsession.
And it's the reason spy and mystery content has been a bestseller for over a century.
That feeling never disappeared. People still crave it. Kids do. Parents do. Adults do.
People don't just solve puzzles. They chase them.
That's exactly why spy and mystery publishing works so well.
And right now — almost nobody is creating the activity book content that feeds that obsession.
That's about to change.
Sound Familiar?
It's 11 PM. You're fourteen browser tabs deep into Amazon keyword research, trying to find a niche that isn't completely saturated.
Word searches? Taken. Crosswords? Taken. Sudoku? Very taken. Dot-to-dots? Surprisingly also taken.
You try different angles. "Word searches for dog lovers." "Crosswords for nurses." "Sudoku but make it cottagecore."
And somehow, no matter how creative you get with the theme... the product underneath is still the same puzzle everyone else is making.
Same formats. Same layouts. Same generators — which, (fun fact), most of them pull from the same 4,000 to 5,000 word lists. So even the content inside your "unique" book is showing up in someone else's "unique" book.
The problem was never your work ethic. It wasn't your keywords. It wasn't your cover design.
The problem was the puzzle.
You were trying to stand out with a product that is, by design, identical to what everyone else is creating. That's not a you problem. That's a tool problem.
So what if the answer isn't a better word search?
What if it's a completely different type of puzzle — in a genre so massive and so proven that you wonder why nobody built software for it sooner?
(Spoiler: someone finally did.)
$22.5 Billion. Growing Every Year.
The spy and mystery genre — spy stories, detective fiction, action-adventure, problem-solving, and especially cozy mysteries — is one of the largest and most enduring categories in all of publishing.
It's one of the top-performing fiction categories on Amazon right now. Nearly 5% growth year over year. And it spans every single age group.
And the publishing world has noticed. Smart vendors are already tapping into this genre — products like Cozy Co-Author by Soren Jordansen and Cozy Mystery Empire by Alessandro Zamboni are helping people write full mystery stories. Others have released prompt packs for writing or coloring.
But actual activity content? Puzzles, ciphers, code challenges, decoder missions?
Nobody's building that. Not until now.
This Genre Isn't A Niche. It's A Culture.
Think about how many movies, shows, and book series live in this world:
National Treasure. Indiana Jones. Uncharted. James Bond. Sherlock. The Night Manager. Red Notice. The Lost City. Jungle Cruise. Scorpion.
For kids? Spy Kids. Agent Cody Banks. Alex Rider. KC Undercover. Spies in Disguise. Scooby-Doo. Nancy Drew. And of course — Enola Holmes.
And in books: 39 Clues. Spy School. City Spies. Charlie Thorne. Sherlock Society. The Codebreakers Club. For adults — The Thursday Murder Club, Agatha Christie, and hundreds more.
Here's the thing: many "kids" books are wildly popular with adults too.
(I'll admit it: I've read the entire 39 Clues series — multiple times. City Spies book 7 is waiting on my shelf. And I sometimes read them before my daughter does. They're well-written, they keep your brain going, and they're fun.)
Why do people of every age love these? Because they're not just stories. They're experiences. Problem-solving. Treasure hunts. The "I solved it!" moment.
That's exactly what your readers will get from the content you create with The Spy Academy.
Oh, and Enola Holmes 3 drops on Netflix July 1st... and Sherlock Holmes 3 also hits theatres (TBD 2026-2027). On top of that, a new series on Amazon Prime released back in March called Young Sherlock. The timing to release this content couldn't be better.
Don't Take My Word For It. Look At The Numbers.
These are real keyword results from Publisher Rocket — the industry-standard tool for KDP market research:
Per Publisher Rocket Data:
"Kids activity mystery books"
$41,711/month average earnings
"Detective activities" (broad)
$16,528/month average earnings
Under 300 competitors
"Kids mystery books ages 8-10"
$15,122/month average earnings
Only 446 competitors
"Detective books for kids 9-12"
$9,791/month average earnings
"Detective activity books for kids"
$1,824/month average earnings
Competitive score: 3 out of 100 — basically wide open
"Kids detective activities"
$3,646/month average earnings
Only 350 competitors
Source: Publisher Rocket. These are niche averages, not guarantees of individual earnings. But the demand is real, the competition is low, and the opportunity is wide open.
Amber Jalink
Why I Built This
My family and I love treasure-type movies, spy films, fun action-adventure stuff. National Treasure. Uncharted. Indiana Jones.
And when I read fiction, I'm reading Charlie Thorne right now. City Spies book 7 is already waiting for me. I promised my daughter she could read that one first.
(I'll admit it: I've often bought her the books... and read them first.)
So recently, we were re-watching the Enola Holmes movies — and it occurred to me: it would be so much fun to create books with ciphers. Real code-breaking. Hidden messages. The kinds of puzzles that are in National Treasure and Enola Holmes.
That's when I went looking for software to create them.
And here's what I found: almost nobody had the software to create them.
The few tools that existed weren't for commercial use. They were far too restricted. Sure, there were cryptogram generators — but that's not what I wanted.
So I thought: we have the Activity Book Generator — we've been running it for over 5 years, serving thousands of KDP publishers. Why not build the software myself?
At first, it started with just a couple of ciphers. And then it morphed into so much more — and that's what you see today.
Introducing The Spy Academy, Powered by Activity Book Generator
The Spy Academy is the first activity book software built specifically for the spy, mystery, and detective genre.
Not a word search generator with spy clip art. Not a crossword tool that swapped in some detective words. Not a reskin. Not a "we added a magnifying glass to the cover" situation.
Five dedicated generators, each one creating a genuinely different type of spy-themed puzzle content — built from scratch for publishers who sell on KDP, Etsy, TPT, and beyond.
Content types that, until now, simply haven't existed in a generator format for self-publishers. Cipher tools exist in the world? Sure. But software that creates print-ready, KDP-formatted, age-adaptable, commercially-licensed spy cipher puzzle books at the click of a button?
That's new.
And it works for every age group. Every generator lets you choose your audience, and the difficulty, language, and complexity adjust to match.
What's Inside (This Is the Fun Part)
Full color, or black and white for easy printing, your choice.
Cipher Crackers
Encrypted spy messages decoded using real cipher methods. And not just one. Nine.
Each cipher has its own difficulty level — from "Recruit" (beginner) to "Field Agent" (good luck). Hundreds of unique puzzle combinations from this one generator alone.
Anagram Missions
Spy-themed word unscrambling with mission-style framing. A familiar puzzle type — in a wrapper nobody else offers.
Code Breaker Challenges
Multi-step challenges where readers solve riddle clues to unlock cipher puzzles. Four unique challenge types. Readers don't just solve — they work through a mission.
Secret Message Decoders
Five different decoder methods for revealing hidden messages. Perfect for themed packs, classroom activities, or standalone puzzle books.
(Kids go absolutely wild for these. Just saying.)
Code Word Puzzles
Crossword-style grids where numbers map to letters. Multiple grid sizes and starter-level variations.
Five generators. Different puzzle types. One genre nobody else is building for.
That's not hype. That's just… math.
Parents — especially moms — are going to love this.
What do you give a kid on a road trip that doesn't involve a screen? At a restaurant? On a rainy afternoon?
These activities are clean. They're fun. They're educational without feeling educational. And kids actually want to do them — because they feel like spy missions, not worksheets.
Parents can put their own twists on it. Customize the themes. Adjust the difficulty. Create books that fit their family.
Screen-free. Clean. Fun. Educational.
And now — something YOU can create and sell.
Publishing Should Feel Creative Again.
Your readers won't feel like they're doing worksheets.
They'll feel like they've intercepted classified transmissions.
Like they're solving field-agent missions.
Like they've stepped inside a mystery novel where every clue matters.
That's the difference between a puzzle book someone forgets — and one they come back to, talk about, and buy the next volume of.
That's what you'll be creating.
Three Steps. That's It.
Pick Your Generator
Choose your cipher type, mission type, or decoder type. Select difficulty. Choose audience.
Customize
Page size (16 options). Font size. Color or B&W. Answer keys on or off.
Download & Publish
Print-ready PDFs. Upload to KDP, Etsy, TPT, or your local printer. Done.
No design software. No templates. No APIs needed. Unlimited PDF Generations on all activities. Choose, customize, download, done.
Founder Pricing Ends When The Launch Closes
★ Get Instant Access Now For Just $37 ★
You Don't Need To Be Creative. You Don't Need To Be Technical.
You don't need to be a puzzle designer, a children's book author, or a graphic artist.
You don't need to know how Morse code works. You don't need to create cipher algorithms. The software does all of that.
You choose the type. Pick the difficulty. Select your format. Click generate. Download a print-ready file.
The puzzle content, answer keys, spy-themed language, formatting — all handled. Your job is to decide what kind of book you want and who you want to sell it to.
If you can use a website, you can use this. That's not a figure of speech — it's literally that simple.
Here's What Happens Next (And Why You Won't Want To Stop)
You create your first cipher book. Maybe 20 pages of Caesar Shift puzzles for ages 8–12. Takes maybe 30 minutes. Upload to KDP.
Then you think: what if I made a Morse Code version? Another 30 minutes. Another book live.
Then: what if I combined three cipher types into "The Ultimate Spy Challenge"? Done. Another book.
Then a Secret Message Decoder book. Then a Code Breaker Challenge for teens. Then an adult version with harder ciphers.
One mission turns into ten.
One puzzle turns into a full series.
One printable pack becomes an Etsy shop.
Each generator has multiple variations, difficulty levels, and audience options. The combinations multiply faster than you can publish them.
And this content builds on itself. Readers who buy Volume 1 want Volume 2. Parents who buy "ages 6–8" want "ages 9–12." Teachers who use the classroom pack want the next one.
It's not a one-and-done product. It's a catalog.
What Does This Look Like In Practice?
"First Spy Printable Pack in 45 Minutes"
Choose 3 cipher types. Set to "Recruit" for ages 6–10. Letter size, B&W, answer keys on. Generate. Download. Add a cover in Canva. Upload to Etsy. Total: under 45 minutes.
A Teacher Creates A Classroom Mission Workbook
Pick Code Breaker Challenges. 4th-5th grade difficulty. Generate 15 mission pages + answer keys. Print at school. Hand them out Monday morning. Students think they're playing. Teachers know they're learning.
A KDP Publisher Builds A 5-Book Series In A Weekend
Volume 1: Caesar Shift (beginner). Volume 2: Mixed ciphers. Volume 3: Secret Decoders. Volume 4: Code Breaker Challenges. Volume 5: "Ultimate Spy Challenge." All ages 9–12. Series branding. Five books, one weekend.
Example workflows showing what's possible. Results depend on your effort, market positioning, and publishing strategy.
People Are Already Making Money In This Genre
Real products, real rankings, real sales happening right now on Amazon and Etsy:
Market results shown, these were not created with The Spy Acadmey. Individual results vary.
Built For People Who Actually Publish
16 Page Sizes
Every major KDP trim, Etsy printable sizes, TPT worksheets, letter, A4. Whatever you sell, wherever you sell it.
Full Color or Black & White
Premium full-color pages or clean B&W for cost-effective printing. Choose per book.
Answer Keys
Every puzzle auto-generates its own answer key. Toggle on or off. Choose answers at the end or after each activity.
Font Sizes
Small (10pt), Medium (12pt), Large (14pt), Extra Large (16pt). Accessible to every reader.
Spy Language Baked In
"Decode the intercepted transmission." "Your handler left coordinates at the dead drop." "Field Agent clearance required." Built in, not bolted on.
Unlimited PDFs
No monthly limits on these 5 activity PDF downloads. Generate, Download as you want.
Full Commercial License
Everything you create is yours to sell. Anywhere. KDP. Etsy. TPT. Gumroad. Craft fairs. Local print shops. (If there's a place that accepts money in exchange for goods, you can sell there.)
"But Is This Really For Me?"
KDP Publishers
An entire product category with almost zero generator-made competition. No more midnight rabbit holes. You just found your niche.
Etsy Sellers
Spy-themed printable activity packs and puzzle bundles. Hugely popular — and no longer hours in Canva.
TPT Creators
Spy-themed classroom activities that teach critical thinking, problem-solving, and pattern recognition. Students get missions. Parents get outcomes. Everybody wins.
Local Businesses & Event Planners
Custom puzzle packs for camps, libraries, bookstores, team-building, after-school programs. Full commercial rights.
Parents & Educators
With summer vacations coming up, these are perfect screen-free activities for road trips, rainy days, or just plain fun. Some can involve the whole family. Adults love them too — a genuinely fun way to keep the mind sharp. And with Enola Holmes 3 dropping July 1st — good luck keeping spy content on the shelf.
Ready to Create Something Nobody Else Can?
Founder Pricing Ends When The Launch Closes
Right now, you’re getting access to The Spy Academy at special founder pricing while this category is still wide open. Get immediate download access today for just $37 one time. When the launch ends, the price increases to $47.
No monthly fees. No renewals. No locked features.
Get in early. Build your catalog before everyone else catches on.
★ Get Instant Access Now For Just $37 ★
Because Every Agent Needs The Right Gear
Launch-week only. After that, they're gone.
Field Report + Monetization Playbook
6-10 hours of market research done for you. Top sub-niches, demographics, pricing benchmarks, monetization strategies. The briefing document before your first mission.
Spy Mission Quick-Start Video Training
From "just bought this" to "first book published" in under an hour. No fluff. No twenty-minute intro about "my journey." Just go.
Spy & Detective Printable Activity Pack
Done-for-you printable bundle with full commercial rights. List it on Etsy today if you want.
The Spy & Mystery Prompt Vault (150 Recipes)
150 story prompts organized by genre and age band. Each includes story idea, audience, tone, character setup, and puzzle integration instructions. Searchable PDF + spreadsheet.
Total Bonus Value: $558
Here's What You're Getting
One time. Not monthly. Not annually. Just $37.
Founder Pricing Ends When The Launch Closes
Get Founder Pricing to The Spy Academy while this category is still wide open. Get immediate download access today for just $37 one time.
When the launch ends, the price increases to $47.
No monthly fees. No renewals. No locked features on any of the puzzle generators, unlimited pdf downloads.
*NEW* 25 complete stories every month with the Story Mission Builder
Get in early. Build your catalog before everyone else catches on.
★ Get Instant Access Now For Just $37 ★
Frequently Asked Questions
Is this a subscription?
No. $37, one time. No monthly fees. No renewals.
How long do I get access?
For as long as we exist — and we're not going anywhere. Activity Book Generator has been running for over 5 years. I've been building online businesses for over 29 years. Your access doesn't expire.
Do I need design experience?
None. Pick options, click generate, download files. If you can order something online, you can use this.
Can I sell what I create?
Yes. Full commercial license. KDP, Etsy, TPT, your own website, craft fairs, corporate clients.
Do I need my own API key?
No api key is required.
How many PDF downloads can I have per month?
There are no restrictions on the generator activities, you can generate and download as many pdfs as you want. The Story Mission Builder has a current limit of 25 story builds per month. We may increase that later, but there are costs that we incur, so we're balancing that right now without charging you more. (One story = 1 count).)
What ages does this work for?
All of them. Early readers (6–8) through adults (18+). Difficulty, language, and complexity adjust to match.
Is this just a word search tool with a spy theme?
No. Completely different puzzle types — ciphers, multi-step code challenges, secret message decoders, code word grids. None of this exists in most other generators.
What formats do I get?
Print-ready PDFs in 16 page/trim sizes. KDP, IngramSpark, Etsy, TPT, standard printing.
What if I need help?
Support is included. Ask in our Facebook group or submit a helpdesk ticket. We respond within 2 business days (excluding weekends and holidays). Usually faster.
Think about this for a second.
Somewhere right now, a kid is bored on a road trip. A teenager is looking for something that isn't a screen. An adult is sitting in a waiting room wishing they had something that actually engaged their brain.
And somewhere else, a publisher is scrolling Amazon at midnight, trying to find a niche that isn't drowning in identical products.
You can be the person who solves both of those problems.
With something that makes readers lean in. Something that makes them think. Something that makes them feel like they're part of the story.
That's not a product. That's a category.
And right now, it's wide open.
You already know what to do.
Here's Where Things Stand.
There's a $22.5 billion genre that has been a bestseller for over a century. It works for every age group. It's growing every year. And until right now, there has not been a single piece of software designed to help publishers create activity content in this space.
You can keep scrolling Amazon at midnight looking for an unsaturated niche.
Or you can walk into a genre with massive demand, almost no competition, and tools nobody else has — for less than the cost of two stock photo subscriptions.
Five generators. Hundreds of combinations. Every audience. Every platform.
And something even bigger on the way.
Ready to Create Something Nobody Else Can?
Founder Pricing Ends When The Launch Closes
Right now, you’re getting access to The Spy Academy at special founder pricing while this category is still wide open. Get immediate download access today for just $37 one time.
When the launch ends, the price increases to $47.
No monthly fees. No renewals. No locked features.
Get in early. Build your catalog before everyone else catches on.
★ Get Instant Access Now For Just $37 ★