Wordoku is a cool combination of sudoku and wordplay--and it's the hottest new craze among puzzle lovers. This massive collection, which follows on the success of the two earlier "Big Books," will provide solvers with hours of fun. It features an amazing 900 wordoku, with grids in a variety of sizes: smaller 8x8s, standard 9x9s, and extra-hard 10x10s. The rules are simple, and almost exactly like sudoku--except with letters in place of numbers. Because the levels range from easy to brainbusting, everyone will find puzzles that are just challenging enough. Plus, when players are finished filling in the grid, they get to uncover a hidden word to complete the puzzle!