Sudoku, the Japanese puzzle game you know and love, gets a colorful, playful update in this free online versionClassic Sudoku, with a colorful twist!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.