
A Keystone Masterworks, LLC studio
Puzzles in print. Puzzles in play.
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
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 printed book. A phone. A version built for a seven-year-old and the parent handing over the phone.
- 01Puzzle books, published on Amazon
- 02Puzzle Pro, the design tool behind them
- 03Play Studio, a dozen-plus games in one app
- 04Play Studio 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 →

Play Studio
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 →


Play Studio Kids
Coming soon.
Play Studio 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. Play Studio and Play Studio 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
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