Royal Sodoku caters to anyone who enjoy puzzles and challenging their brain power. If you're a numbers person, play the traditional Numbers mode. If you're more of a letters person, use the Alph mode. Want to mix it up a bit? Use the Alph+Numb mode to really give your noggin a tease! You can start with the board completely empty with the Clear Tab button or click the Generate button to scatter some random numbers and/or letters to get you started. And you have the option to press Undo if you second guess your last turn. No matter what your mode, Royal Sodoku can cater to you!