Is a puzzle book a “low-content” book on KDP?

That distinction matters in practice. A journal or a lined notebook repeats the same page; a word search or sudoku book has a different puzzle on every page. KDP’s low-content books help page also lists what changes when you tick the low-content box: those books are not eligible for the free KDP ISBN, and books published without an ISBN don’t show the Read Sample feature and can’t be set up as a series.

For a genuine puzzle book, leave the box unticked unless KDP’s current guidance tells you otherwise. Rules change, so re-read that help page before every launch rather than relying on an old course or forum thread.

Who buys large-print puzzle books, and why

You’ll write better listings if you picture real buyers instead of “the market.” Four groups show up again and again:

• Older solvers who still love puzzles but find standard newsstand grids hard on the eyes, especially in evening light.
• Gift buyers, often adult children or grandchildren, looking for an easy, thoughtful present for birthdays, holidays or a hospital stay.
• Travelers who want something offline with no battery to charge, for flights, train rides and road trips.
• Caregivers and activity coordinators who need calm, achievable puzzles for a group or a loved one.

Notice what these buyers have in common: they judge the book by how comfortable it is to use. That’s your edge. A careful creator can beat a high-volume publisher simply by making pages that are easier to read and puzzles that are actually solvable.

One caution: keep claims honest. It’s fine to say puzzles are relaxing, fun or a nice daily routine. Don’t promise your book will prevent memory loss or “boost IQ,” because those are health claims you can’t back up, and they invite returns and bad reviews.

What “large print” should mean on the page

KDP’s general fonts help page sets a 7-point minimum for all print books, which tells you nothing useful about large print. Accessibility organizations set the real bar: low-vision guidance from VisionAware (American Foundation for the Blind) recommends 18-point type, with 16 points as the minimum. For puzzles, size is only part of it.

• Puzzle letters and digits at 18 pt or larger; instructions at 16 pt or larger.
• A clean sans-serif typeface with clearly different characters (1, I and l should never be confused).
• Pure black on white. No pale gray grids, no busy backgrounds behind letters.
• One puzzle per page, with generous cell spacing and thick outer borders.
• A large trim, such as 8.5 × 11 inches, so big type doesn’t cramp the grid.
• Answer keys readable too, not shrunk to six per page in tiny print.
• “Large Print” stated clearly on the cover and in the title or subtitle, and selected in your book details if KDP’s form offers that option.

Step by step: build a themed puzzle book with generators

Generators save hundreds of hours, but they produce raw material, not a finished book. Here’s a workflow that turns grids into a product.

1. Choose one buyer and one theme

   “Puzzles for seniors” is a category, not a theme. Narrow it: gardening words, classic movies, US national parks, Bible names, road-trip vocabulary. A theme gives you word lists, a cover idea and a reason to buy your book over a generic one.

2. Plan the mix and the difficulty curve

   Decide puzzle counts per type and order them from easy to harder, so early wins build confidence. Large-print buyers usually prefer easy-to-medium sudoku over brutal expert grids.

3. Generate with a tool you’re licensed to use

   Use a puzzle generator, design-software plugin or a simple script, but read its terms first. Confirm the output may be sold commercially in print, and keep a copy of that license with your project files.

4. Verify every puzzle

   Check that each sudoku has exactly one solution and each word list is spelled correctly. Scan word search filler letters for accidental rude or embarrassing words; many generators let you block them, but look anyway.

5. Lay out the interior

   Set your trim size, margins and bleed using KDP’s templates, add a short “how to play” page, and number every puzzle so solvers can match it to its answer.

6. Build answer keys solvers can read

   Group answers at the back, clearly labeled with puzzle numbers, in a size that’s still comfortable. Highlighted word search answers should be visible without color, since interiors are often printed in black and white.

7. Design the cover and disclose honestly

   Show “Large Print” and the puzzle count prominently. If you used an AI tool to create text, word lists or images, answer KDP’s AI question accurately: its content guidelines ask you to disclose AI-generated text, images and translations, while AI-assisted editing doesn’t need disclosure.

Worked example: the Brain Gym blueprint

Here’s how the example book could be planned. It’s a planning template, not a sales report.

Alternating puzzle types stops the book from feeling like a repetitive data dump, and the themed sets give your description concrete selling points.

Sudoku vs. word search: which to make first?

If you’re starting out, a themed word search book usually gives you more room to differentiate. A combined book like Brain Gym works well once your verification process is solid.

Write a listing that earns the click

Your listing should answer the buyer’s three silent questions: Can I read it? Will I enjoy it? Is it a good gift?

• Title and subtitle: clear and specific, such as the puzzle types, “Large Print” and the theme. Avoid stuffing a dozen keywords into the subtitle.
• Description: state puzzle count, type size, trim size, difficulty levels, theme and that solutions are included.
• Keywords and categories: use real phrases buyers type, like the theme plus “large print word search.”
• Interior proof: if Read Sample is available for your book, make sure your first pages show a real puzzle quickly.

Mistakes that quietly sink puzzle books

• Calling a book “large print” when the grid letters are only slightly bigger than normal.
• Skipping verification, then getting reviews about unsolvable sudoku.
• Copying another publisher’s cover style or word lists.
• Publishing ten near-identical books instead of one great one with a clear theme.
• Making unprovable brain-health promises in the description.
• Ticking the low-content box out of habit for an activity book.

Sell the same puzzles beyond Amazon

Many creators also sell a printable PDF edition, which suits buyers who want to print one page at a time at home. Platforms such as Gumroad make that simple. Before you do, confirm your generator license covers digital downloads as well as print.

If you go that route, these guides will help: how to optimize for the Gumroad Discover marketplace, scaling from one to 10+ products on Gumroad, and the Pinterest marketing guide for showing off sample puzzle pages.