The object of Sudoku puzzles is to place the numerals 1 through 9 in a 9 x 9 grid so that each row, each column and each 3 x 3 grid contains each number one time only. Wordoku takes this concept one step further. Instead of numbers, the puzzles are constructed using the letters of a 9 letter word. If the puzzle is done correctly, the word will be spelled across the center of the grid. Conversely, solving the anagram and entering it into the grid may help you solve the puzzle. Options available: 200 puzzles with 4 difficulty levels, save incomplete puzzles, hints, check for incorrect numbers or check entire puzzle, restart puzzle, solve puzzle, choice of background, number and highlight colors, eight puzzles in the trial version; 400 in the full version, free updates (more puzzles as they become available), complete help file, complete setup and uninstall.