Sudoku Guide: Overview | How to Play | Sudoku Tips | Where to Play | Links | Glossary
Below you will find a list of game sites where you can play sudoku online. All of these sites offer free sudoku games.
GameDuell – One of the largest game sites. Play against real people for real prizes
Web Sudoku – Thousands of free puzzles from easy to evil. Free version does not give solutions however.
Bran Bashers Sudoku