Puzzle Book Creator Online is a web-based tool by Nitro Rain designed for KDP and Etsy entrepreneurs. This software allows users to create fully-featured and perfectly formatted puzzle books for the KDP platform. Additionally, users can sell PDF manuscripts on platforms like Etsy, Payhip, and eBay. Please note that the app is still in development, so encountering occasional errors is possible.

With Puzzle Book Creator Online, users can generate a variety of puzzle book types, including crosswords, word searches, sudoku, mazes, cryptograms, fillomino, hashi, kenken, and more. Each puzzle type offers a unique challenge, from word games and number puzzles to logic and grid-based challenges.