Titan Sudoku Free is a free puzzle game available for Android users. It offers more than 36,000 puzzles to choose from, making it an excellent choice for Sudoku enthusiasts. The game's objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids contains all of the digits from 1 to 9. The game provides a partially completed grid, which for a well-posed puzzle has a unique solution.

Sudoku Free offers four different levels of difficulty, making it an excellent choice for both beginners and experienced players. The game also comes with six different themes to choose from, allowing players to customize their gaming experience. Moreover, players can create their puzzles, adding to the game's versatility. If you are a fan of Sudoku, Sudoku Free is worth giving a try.