A Keystone Masterworks, LLC studio
Puzzles in print.Puzzles in play.Games on the go.
We publish puzzle books, build the tool that designs them, and turn the same craft into mobile games for adults and for kids.
See what we make →One craft, four products
Original puzzles, made in-house for our books and PlayStudio games.
Everything here starts with the same skill: making word and puzzle content people want to sit down with.
Then it goes wherever fits best. A design tool that shapes it into a print-ready book. A finished puzzle book on Amazon. A whole app of games on your phone, a dozen-plus in one download. And that same app reshaped for a seven-year-old, with the parent handing over the phone.
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01Puzzle books, published on Amazon
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02Puzzle Pro, the design tool behind them
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03PlayStudio, a dozen-plus games in one app
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04PlayStudio Kids, the family edition
Puzzle Books
Our own word search titles, written and designed in-house, printed and sold through Amazon KDP. Each collection is themed and built as a whole, cover through answer key, with large-print editions for readers who want the grid to breathe.
Browse the books →
Puzzle Pro
A guided workspace that takes a KDP puzzle book from trim size to print-ready PDF without five separate tools. Bleed, safe margins, spine width, and barcode placement are checked on the canvas as you design, not discovered after upload.
Explore Puzzle Pro →
PlayStudio
Word Search, Sudoku, Solitaire, Crossword, Trivia, Maze and more. A dozen-plus games, themed collections, daily challenges. One app, built on the same puzzle craft behind every Kraftworks book.
See the games →
PlayStudio Kids
The same engine reshaped for a young player: parent PIN, star-gated unlocks, chores that earn rewards, and no ads. Ever. Built for the parent handing over the phone, not just the kid holding it.
Meet the kids edition →
The studio
We make our own tools, then use them first.
Puzzle Pro is the engine behind the printed books. PlayStudio and PlayStudio Kids are that same craft turned into mobile play.
Operated by Keystone Masterworks, LLC, which also runs Keystone Cyber Advisory and Vantage15, each a separate brand with its own audience.
Help
Need a hand? Get in touch.
Email us directly and we'll get back to you.