This Sudoku app has some really good features but the way that they have integrated ads makes the game worse than unplayable, not only will this game randomly play banner ads at top volume while you play with no way to mute them, sometimes literally playing on loop but it will also randomly play these ads if it is open in the background meaning if you have switched from playing to watching Youtube for example you will be deafened with random adverts you cannot close played louder than thevideo