$$$$$$$$ All coins in app are FREE $$$$$$$$. All levels are free. Sudoku Saga, a puzzle game, test your intelligence! For free. Sudoku Saga is puzzling players all over world. Sudoku is easy to learn but a challenge to master. There is really only one rule to Sudoku: Fill in the game board so that the numbers 1 through 9 occur exactly once in each row, column, and 3x3 box.