Sudoku is a fun and a relaxing game. The game play can be very easy to quite difficult. Sudokus Revenge adds an even greater challenge by displaying dominoes, shapes, or snowflakes instead of numbers. Its a simple twist on an old favorite, or you can play the old way.
The only in-app purchase is a one-time donation to the developer. Otherwise, the game is completely free to play.
Every day a new competition is available to play against other players.