Sign Up for Iron Sudoku
Iron Sudoku is 100% free to play. Anyone can play the daily puzzles and chat with other players from around the world. If you want to take advantage of Iron Sudoku's many extra features, you can upgrade to a Pro account at any time.
Sign up today and you'll be able to use Iron Sudoku's exclusive Checkpoint feature free for 14 days!
NOTE: Iron Sudoku requires that you use a modern browser in order to function properly.
(A few popular examples)
| Internet Explorer 6.x (or greater) | Yes |
| Firefox 1.x (or greater) | Yes |
| Safari 1.x (or greater) | Yes |
| Netscape 6.x (or greater) | Yes |
| Opera 8.x (or greater) | Yes |
| Internet Explorer 5.x | No |
| Netscape 4.x | No |
Iron Sudoku Profile
(Your personal info will never be shared and will only be used to contact you about Iron Sudoku stuff)