Sudoku online game from Easy to Evil. Sudoku puzzle game online is absolutely for free. Sudoku is a logic-based, combinatorial number-placement puzzle. The concept of Sudoku puzzle is simple. The objective is to fill a 9x9 grid so that each row, each column, and each of the nine 3x3 boxes (also called blocks or regions) contains the digits from 1 to 9 only one time each. Sudoku puzzle requires no special calculation or arithmetic skills. It is essentially a game of placing numbers in boxes, using very simple rules of logic and deduction. Here you go to play all types of sudoku Online game, sudoku puzzles free, sudoku for kids, sudoku daily, sudoko, suduko games.