Low-content publishing built quiet fortunes on Amazon. This is the next wave.
Activity books on Amazon KDP have generated life-changing income for thousands of regular people. Word searches, sudoku, mazes.
The catch?
Everyone piled in. The generic stuff is now a brutal race to the bottom on price and competition.
Then a new format started climbing the charts, fast: the murder-mystery word search hybrid.
Part puzzle. Part whodunit.
Readers don't just circle words. They hunt clues, follow the logic, and unmask a killer.
And they're hooked. Which means even more money if you create a series!
That's what a recent release in this niche pulled in. Not a decade-old bestseller or a trad pub from one of the big 5. A brand-new SELF PUBLISHED book, in a category most publishers haven't even noticed yet.
An Unsaturated Goldmine Awaits
These are self-published murder-mystery word search books climbing Amazon right now. This is currently an untapped niche so get in early and claim your share of royalties quickly!
Monthly earnings are gross sale figures from Amazon.com
A Rare Find...
This is not the saturated generic puzzle graveyard where it's impossible to get noticed, much less make a full-time income.
The murder-mystery hybrid angle is still wide open . And there's a simple reason why.
These books are genuinely hard to make.
Every case has to bury the right words in the right scenes. Then point to exactly one weapon, one killer, one victim, and one location. With zero contradictions.
Try that by hand and you'll burn a weekend on a single page.
That difficulty is the obstacle. It's why the copycats can't flood in. The lazy bastards don't know how to create them quickly so they overlook it.
And it's why early movers are cleaning up.
Not Your Average Puzzle BookIt's a word search and a whodunit in one.
What makes these so special (and why they're in such high demand) is because they're a hybrid puzzle with a twist: every page is a crime scene.
Readers find the hidden words across four scenes, then use those clues to deduce the weapon, the victim, the location, and the killer.
One puzzle, two layers: search and solve.
A low-content (generic, boring and overdone) word search is solved and tossed aside in a few minutes.
A hybrid whodunit puzzle book makes readers actually think. They're interactive and exciting.
So they come back for the next book. And the next.
That's what turns a one-time buyer into a series collector. And a single title into a catalog that pays you month after month.
The NumbersWhat the data says about this niche
These are estimates from best-seller-rank data and KDP research tools, so you can verify them yourself.
Every single one is a recent release.
Not old bestsellers. Not authors with huge followings. New books, in a hot new sub-category most publishers haven't even spotted yet.
This is a hot, unsaturated KDP goldmine. And it's just getting started.
The generator that builds the whole book for you!
Killer Royalties is a self-contained tool that builds complete, print-ready murder-mystery puzzle books in minutes.
Open the tool in your browser. Choose your settings such as size and how many puzzles and pages you want. It lays out every page for you.
This includes the how-to-solve pages. An example page. Every case. And a full answer key in the back. And even your title and copyright page that you can easily customize.
What You Get:
- 100 built-in themes from Mansion and Hospital to Haunted House, Circus, Zoo and so much more. Build a mixed book or a single-theme volume.
- A real deduction engine that guarantees every case has exactly one solvable answer. Verified, never ambiguous.
- An editable "How to Solve" page so you can put the rules in your own words and brand it as yours.
- A solved "Case Zero" example that teaches readers the method before they start.
- A built-in answer key generated automatically in the back of the book.
- The trim sizes KDP buyers want: 8.5x11, 8x10 and 6x9, all auto-formatted.
- Drag-to-arrange pages so you order the book exactly how you like before you export.
- Download as a full PDF or page-by-page PNGs, whichever fits your workflow.
- Clean greyscale interiors that print beautifully and keep costs low.
- No subscriptions, nothing to install. It runs entirely on your computer in your browser.
From blank screen to KDP upload in a few easy steps
Pick your themes
Tick the settings you want, or hit "All Themes" for a ready-made 100-page book.
Generate
Every case is built instantly, each with a guaranteed single solution.
Arrange & brand
Reorder pages, edit the how-to-solve copy, choose your trim size.
Download & publish
Export a print-ready PDF, upload to KDP, and you're live.
Killer Royalties is for you if...
- You publish on KDP (or want to) and you're tired of competing in the same crowded plain-puzzle niches.
- You want to create beautiful in-demand books that are hard for others to copy, so it holds its value.
- You'd love to create and launch a book in a single day.
- You want clean, professional interiors without learning design software.
- You're done paying monthly for clunky tools. This is a one-time payment.
