Simon Tatham's Portable Puzzle Collection is a free, open-source collection of logic games that includes Solo, its Sudoku-style puzzle. It is designed for players who want offline play, configurable boards, and no advertising across desktop and mobile platforms.
Web Sudoku is a browser-based Sudoku service for casual players who want free puzzles without installing an app or creating an account....
Sudoku.com offers a wide range of Sudoku puzzles and features, with a clean interface.
Free with in-app purchases
Conceptis Puzzles offers a wide range of puzzle types including nonograms, picross, and sudoku with varying difficulty levels.
Free with in-app purchases
The New York Times Company
The New York Times Games offers curated daily puzzles, including Sudoku, for players who value editorial quality and a consistent publishing schedule....
Free tier; Games subscription from $5/mo
SudokuWiki
SudokuWiki is a free web resource combining playable Sudoku puzzles with solving techniques, explanations, and an interactive solver. It is aimed at...
Guardian News & Media
Guardian Sudoku is a free browser puzzle published by The Guardian for players who want a straightforward daily Sudoku alongside other newspaper...
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