Sudoku 4Two is the only Sudoku app with true MULTIPLAYER. Challenge yourself and your friends, and enjoy this all-time classic whether you're a beginner or an extreme expert. We have over 2 million brain teasing puzzles for you to solve. Features: Multiplayer challenges: Play against friends or other online players and see who can complete the same grid with the highest score. User-friendly interface: Our clean, friendly interface lets you focus and enhances your puzzle-solving skills. Single-player practice mode: Brush up on your skills or enjoy a solo game before tackling our multiplayer challenges. Customizable gameplay: Customize your experience with a plethora of options, making this truly YOUR Sudoku game. 5 Difficulties: Difficulty levels to suit all players, including extreme puzzles that can only be cracked with advanced strategies. Statistics tracker: Track your individual stats, and your head-to-head stats against favourite opponents, so you can easily check your progress. Hint system: Our game is frustration-free. If you don't know how to proceed, use a hint and get past that hurdle. Engaging music: Enjoy beautiful, relaxing music composed specifically for our game.