Play Sudoku puzzle game for Windows.It has a unique solution that can be reached logically without guessing. It's fun. It's challenging. It's addictive! Sudoku,which is a puzzles that register as numbers,has been popular all around the world.. Sodoko Puzzles. Free Sodoko puzzles - Sudoku,sometimes spelled Su Doku(sodoko),which is a puzzle game that register as numbers,has been popular all around the world.