The game comes with an intuitive user interface and offers a variety of functions including an exciting two player mode, over 20 different symbol sets, an integrated MP3 player, high score function, puzzle printing end even the possibility to save or load a running game. Furthermore there are several thousand game variants in five different levels of difficulty. It is possible to indicate game hints or to show the solution for each puzzle. There is also an easily understandable tutorial for Sudoku beginners... The license of this game software is Freeware, you can free download and free use this Game software.