Sudoku: Classic Puzzle is a free android game developed by Gaming World Studio. This game is a perfect choice for all the Sudoku lovers out there. It has over 5000 challenging puzzles to train your brain, and 100 new puzzles are added every week. The game is designed for both beginners and advanced players, and each puzzle has only one true solution.

The game is based on a logic-based number puzzle where the player has to place 1 to 9 digit numbers in each grid cell so that each number appears only once in each row, column, and mini-grid. Sudoku puzzles come in three difficulty levels - easy, medium, and hard. The game also offers pencil mode and highlight duplicates to avoid repeating numbers in a row, column, and block. Additionally, intelligent hints are available to guide you through the numbers when you get stuck.