This Certified Sustainably Sourced certified Emeraldome Wood Sudoku games you will play for hours! The entire game is made from wood including the pegs and comes with a solid wood cover to protect the pieces. Comes with easy to understand rules for playing and solving Sudoku puzzles. A puzzle can take from 20 minutes to 2 hours to complete depending upon your experience. Comes in Certified Sustainably Sourced certified kraft box.