Free Sudoku Games - Play Free Online

Below are links to Sudoku Online Games on this site. Play them online anytime with no restrictions. For more types of games, see the Free Brain Games main page.

Above are links to all the free Sudoku games on this site. There are several versions here, including printable Sudoku, so enjoy!

These free online Sudoku games are available to play anytime, no registration required.

Sudoku is a popular math puzzle game. It's easy to learn, but that's not to say solving it is easy. The game can be quite challenging.

Note: Want to print out sudoku to solve with pen or pencil? See my 100 Free Printable Sudoku Puzzles page.

The basic rules of Sudoku (see below) are fairly easy to understand. For detailed instructions, including advanced techniques, visit the Sudoku Instructions page.

In standard Sudoku, you're presented with a 9 x 9 grid. The grid is subdivided into nine 3 x 3 sections.

You'll see that many of the cells in the grid are blank. Other cells contain a single digit, 1 through 9, already pre-filled in. (The number 0 is not used.)

The goal is to fill the rest of the 9x9 grid with single-digit numbers 1 through 9 with the following basic restrictions: A number can only be used once in each row, column, and 3x3 cell.

If you'd prefer to solve Sudoku on paper, I've got just the thing. I've made 100 free Sudoku puzzles you can print out anytime.

The puzzles are sorted by difficulty. They range from Easy to Very Hard.

The difference is simply the number of pre-filled numbers in the 9 x 9 grid. The few numbers pre-filled, the more difficult it is to figure out the remaining numbers. That's the challenge!

Sometimes I prefer to solve Sudoku on paper, simply because it can be easier to make notations in the margins.

But as you can see, at least one of the online free sudoku games above (247 Sudoku) has a note-taking feature that closely replicates this ability. Play Now

More Number Puzzles

If you enjoy playing Sudoku, there's a whole world of number puzzles you might enjoy. Some of them are available free-to-play on this site, including KenKen (also known as MathDoku) and Kakuro.

Math games make great brain games. They obviously sharpen numerical skills, but they also train concentration and visual perception.

Published: 04/29/2010
Last Updated: 10/11/2023