Sudoku is a very popular and famous game all over the world. More suitable for those who love ponapryagat their brain. There are four levels of difficulty. The essence of the game is to fill the squares of the nine cells so that in any column, in any row and in any one square and the same number is not repeated twice. At first it may seem difficult enough, but then you wont be able to stop – the game is really addictive.