Sudoku Lounge - Classic Sudoku is a free android game designed for beginners and advanced players alike. With more than 20,000 free levels available, this game promises to keep you entertained for hours on end.

The game has a comfortable and clean board, with five difficulty levels to choose from: easy, medium, hard, expert, and unbeatable Invictus. The Magic Pencil feature makes it easy to auto-fill all pencil notes with just one move, and you can rank your time among other players. The game also includes a range of themes to choose from, so you can customize the look of the game to your liking.

With a clean time chart, you can track your skill growth as you play the game offline. The game also offers additional features such as the Sudoku autofill feature, Sudoku Lounge with 20,000+ free puzzles to select from, leaderboards to check your rank, and a fast input mode for experienced gamers.

Overall, Sudoku Lounge - Classic Sudoku is a great game that challenges your mind and keeps you engaged. It is no surprise that it is one of the top choices for Android on Google Play. Download it now and enjoy solving free number puzzles!