This is a puzzle game that will exercise your brain and offer hours of fun. You can play it on your computer, or you can even download it to your phone! This game is easy to learn but difficult to master. It starts out with simple puzzles, but as you advance, the difficulty level increases. There are many different types of puzzles for you to choose from: classic sudoku (9x9), large sudoku (16x16), small sudoku (4x4), and more! It is played by placing numbers from one to nine into a grid, divided by squares. Each row and column has exactly one of each number. This gives you a total of 81 squares, and the goal is to fill them in such a way that each row, column, or region contains all numbers from one to nine only. This makes it an easy game to learn but a difficult one to master. There is also a "hint" option for when you're stuck!