Less Than 8!

Griddition is a math puzzle game in which you must test your addition skills across over 190 levels of increasing difficulty and enjoyment, earning trophies and bragging rights along the way. Think of Griddition as Sudoku for the 21st century.

OpenSudoku is an open source sudoku game.

Sudoku puzzles for kids to experts, including 9x9 Sudoku, Samurai Sudoku, 25x25 Sudoku, 4x4 Sudoku, 6x6 Sudoku, 8x8 Sudoku, 12x12 Sudoku, 16x16 Sudoku, 20x20 Sudoku, Multi 2 Sudoku, Multi 4 Sudoku, su Doku, and su do ku puzzles. No installs, no plugins, no flash needed.

Crazy Sudoku provides thousands of Sudoku puzzles of all difficulty levels. It has an intuitive touch screen interface for solving easy puzzles as well as extremely challenging ones not found anywhere else. Crazy Sudoku has challenges not only for the beginner, but also for the experienced Sudoku player.

Mathdoku (also called KenKen® and Calcudoku) is a math and logic puzzle similar to Sudoku.In Simple MathDoku, in addition to being able to note candidates for each cell, you can also note combinations of candidates for each cage. By using the cage note feature, you can solve high difficulty level puzzles more easily.

"Sudoku Best Puzzle Game FREE" is a top logic-based number placing game. Sudoku doesn’t require any calculation or mathematical skills. All you need is brain and little concentration. Sudoku is an excellent brain boosting game and brainteaser game. Play Sudoku daily to improve your concentration levels and overall brain power. The main objective of the game is to fill 16×16 grid or 9x9 grid with digits so that each column, row, and 3×3 section contain the numbers between 1 to 9 without duplication in horizontal, vertical, and 3x3 space.Sudoku is a fun puzzle game. Once you start playing our puzzles, with in a short span our Sudoku app will be your favorite puzzle game. Brain Games!! Play Sudoku daily!! »

Enjoy endless Sudoku fun. Sudoku Uno can create a seemingly unlimited number of Sudoku grids for you to solve. Sudoku Duo on iPad allows you to partner up with a second player or challenge an opponent to solve a Sudoku grid while both of you use the same iPad.