How a strange little browser tool spits out fully-solvable, genuinely creepy logic puzzles — dossier, clues, and answer key included — in less time than it takes your coffee to go cold. No writing. No spreadsheets. No 2am "wait, does this puzzle even have one solution?" panic.
It's 11:47pm. I've had three coffees. My spreadsheet has forty tabs open, and I've just discovered that Suspect #4 and Suspect #7 have identical alibis.
This is the fourth time tonight this has happened.
If you've ever tried to build a murder-mystery or logic puzzle book for KDP by hand, you already know exactly the feeling I'm describing. It's not the fun kind of puzzle-solving. It's the "I am the puzzle now and nobody has solved me in six hours" kind.
Here's the thing nobody tells you about this niche before you get into it:
The puzzles are the easy part to imagine and the brutal part to actually build.
You need a cast of suspects. Each one needs their own location, their own item, their own motive — and none of them can repeat, or the whole thing falls apart. Then you need clues that eliminate everyone except one suspect, in a way that's satisfying to read and doesn't accidentally eliminate two people, or worse, nobody at all.
Get one clue wrong and you don't find out until a reader emails you — or leaves a 1-star review with the words "the logic doesn't work" in it, which is about the worst three words a puzzle book creator can read.
So a few weeks ago I did what any reasonable, only-slightly-unhinged person would do.
I built a haunted house that solves its own crimes.
It's a browser-based generator — no login, no API key, nothing to install — that builds complete, ready-to-publish logic puzzles set in haunted mansions, cursed museums, and paranormal case files.
You pick your theme, your suspect count, your difficulty. You click one button.
And out comes a full case file: a spooky little intro paragraph, a suspect dossier table, a set of clues that eliminate every suspect but one by mathematical construction — meaning it is not possible for the puzzle to have more than one solution, because I built it that way on purpose — and a complete answer key at the back.
You don't have to take my word for the "it actually makes sense" part, either. Here's an actual case file it spat out while I was writing this page:
Notice something about those clues? Every single one directly eliminates a suspect using something from their own dossier row. There's no trick, no ambiguity, no "well I GUESS it could be either of them." By the time you've read clue five, there's exactly one name left standing. That's not luck. That's the entire point of how this thing was built.
Every case is dressed up in a deep plum, brass gold, and garnet gothic aesthetic — so if you're already running a cozy-mystery or gothic brand, it slots right in without you touching a single design element.
Honestly? If you're not building logic puzzle books, activity books, or brain-game content for KDP, this isn't for you, and I'd rather tell you that now than have you ask for a refund later.
But if you are — if you've ever stared at a blank spreadsheet trying to figure out how to make six suspects and six locations line up into something that isn't either too obvious or unsolvable — this is the thing that gets you unstuck. Today. In the next ten minutes, if you want.
This isn't an AI subscription. It doesn't call any API, which means it doesn't have a monthly bill, doesn't require you to hand over a credit card to OpenAI, and doesn't stop working the day some company decides to change its pricing. You own the file. It runs forever, on any computer, with no internet connection.
It's also not a "1000 done-for-you puzzles" PLR pack. Those exist, and plenty of other people already own the exact same 1000 puzzles you'd be publishing. Every batch this generator makes is assembled fresh, from a large pool of suspects, locations, objects, and motives, shuffled a different way every time you click the button.
I could dress this up and tell you it's normally $97 and you're getting some enormous launch discount. You'd probably even believe me, because that's how this industry usually talks.
But it's a tool that generates puzzles, not a small business in a box, and I'd rather price it like what it is: something genuinely useful that saves you hours of spreadsheet-based suffering, priced low enough that saying no to it takes more effort than saying yes.
No. It's a single file. Double-click it, it opens in your browser, you click "Generate," and you're done. That's the whole technical requirement.
They can share entries from the same pools (that's how the theme stays consistent), but the combination — which suspect got which location, object, and motive, and which one is guilty — is reshuffled every single time. Generate 20 cases and you'll get 20 different arrangements.
Yes — copy the text out and edit it however you like before it goes into your KDP interior. Nothing is locked.
Yes. It runs in any modern browser on any operating system, since it's just a webpage that happens to live on your hard drive instead of the internet.
The three built-in themes cover the evergreen core of this niche. If you outgrow them, that's a good problem to have — it means you're publishing enough to need it.
Talk soon,
Kay
P.S. — The two screenshots above aren't mockups. That's the actual tool, generating an actual case file, in the actual amount of time it took me to write this sentence. If you want to see it do that eleven more times, click the button above.
P.P.S. — If you're the type who reads the P.S. before deciding anything (no judgment, I do it too): this is a one-time $16.95 payment for a tool you keep forever, that builds a genre of puzzle book people are still under-serving on KDP. That's really the whole pitch.