Sudoku, originally called Number Place, is a logic-based, combinatorial number-placement puzzle. This Free Classic Sudoku puzzle game is perfect for people of all ages, whether you're a fresh start or advanced player.

In Sudoku, you can enjoy relatively easy puzzles that are suitable for everyone. It's an excellent game for beginners, as it provides a full explanation on how to play. Choose any Sudoku difficulty you like to challenge yourself. Playing with easier difficulty levels can help exercise your brain, while trying expert-level difficulties can truly exercise your mind.

Sudoku offers three kinds of grid sizes: 4×4, 6×6, and 9×9. This variety allows you to choose the grid size that suits your preference. Additionally, the game features daily challenges that you can complete to collect trophies. It also highlights duplicates to help you avoid repeating numbers in a row, column, or block.

Other notable features of Sudoku include unlimited Undo/Redo buttons, an autosave feature that allows you to stop and resume the game at any time, and useful statistics that track your progress with puzzles completed and top completion times. Furthermore, you can play Sudoku offline whenever you want.

In classic Sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids contain all the digits from 1 to 9. The game provides partially completed grids that have a single solution for a well-posed puzzle.