Sudoku Collection - A collection of graded Sudoku puzzles plus Big Sudoku, Giant Sudoku, Daily printable Sudoku and Online Sudoku puzzles.
Wicked Good Games
Fetchfido Free Online Games
1001 Online Games Your games directory - Free online jigsaw puzzles, games, and more. - Online Flash games and puzzles for free!
Puzzle Games - A collection of free online puzzle games
PuzzleGames4Free - A large range of computer puzzle and strategy games that can be downloaded and played for free.
Puzzle Master - Puzzle Master has a large and unique collection of brain teasers & puzzles for sale. In addition they also carry chess, mechanical banks, puzzle books, magic trick books, boomerangs, etc.
Passion for Puzzles Blog - A fantastic site for all kinds of puzzles. You can find solutions for brain teasers. There is also a great section for online games and another section for daily online activities like crosswords, sudoku, word search etc.