Based on the popular Japanese puzzle game Sudoku is based on the logical placement of numbers. An online game of logic, Sudoku doesn't require any calculation nor special math skills; all that is needed are brains and concentration.
* 4 levels - easy, medium, hard, extreme
* Unlimited number of sudoku
* 2 input modes - cell first, popup
* Random hints
Simple to use Sudoku interface
Multiple difficulty levels
Simple input for easy playing