Well Sudoku is a Games & Entertainment::Puzzle & Word Games software developed by Big Fish Games. After our trial and test, the software was found to be official, secure and free. Here is the official description for Well Sudoku: Newspapers are so yesterday. Put down your pencil and try your hand at this colorful online Sudoku game. Well Sudoku brings bright, vibrant numbers to the classic Japanese puzzle game. This free online version challenges your brain and your eyes. With 6 puzzle sizes and 3 difficulty levels, you will have an unlimited number of puzzles to solve. you can download Well Sudoku free now.