A game lovers of Sudoku will enjoy for a change! Play it casually on the easy level or challenge your brain on the harder levels.

Each row and column contain one of each number from one to the grid size. To determine these grid values, between the main grid squares are summary numbers that show the sum of the four surrounding grid squares.

Once all of the grid values are placed with no duplicate numbers in any row or column you win!

Unlimited plays! Every game is randomly generated so you will never run out of new games to play!
 
The play grid has been designed with two main color schemes in mind: Daylight and Twilight. The eight Daylight skins all have light backgrounds with black numbering while the Twilight skins have dark backgrounds with light numbering. For those who are just learning or want to play a quick casual game there is also an option to color mistakenly set numbers in red so you can see where you have made a mistake.

Options: On the options page you can choose one of the four grid sizes (5x5, 6x6, 7x7 and 8x8), the difficulty level (easy, medium or hard) and one of the sixteen backgrounds. The options will be saved so that the next time you play your favorite grid size and skin is automatically enabled.

View Mode: When changing the view style (landscape/portrait), the numbers will automatically update so that the grid can easily be viewed from any of the four viewpoints. This allows you to view the puzzle from different angles which might be helpful seeing possible solutions.