Web Sudoku's free online Sudoku puzzle is played by millions of visitors monthly. Other popular features include the Daily Sudoku Variation and Flash-based JigSawDoku.
The puzzle can be played offline with Web Sudoku Deluxe, the premium version for Windows or Mac. Web Sudoku Ebooks offer a unique ability to create and print personalized books of puzzles.
Web Sudoku also provides Sudoku syndication services for newspapers, magazines, websites and more.