Sudoku: Classic & Variations

Enjoy playing six different Sudoku variations in a single app! Start with the classic Sudoku grid, then challenge yourself with variations like Diagonal Sudoku, Irregular Sudoku, OddEven Sudoku, and more! Each variation offers a unique twist, perfect for Sudoku fans looking for an extra challenge. Plus, Mega Sudoku puzzles (also known as Monster Sudoku) are available on tablets, offering even bigger brain-busting challenges. The app provides an intuitive, no-frills game design, letting you focus on solving puzzles while offering helpful tools to guide your progress. You can even play and save multiple puzzles simultaneously. Whether you're a beginner or a seasoned solver, you'll find a difficulty level that suits you. Key Features: 160 free puzzles including Classic Sudoku and 5 unique variations: Mini, Diagonal, Irregular, OddEven, and Mega (tablet-only). Extra bonus puzzle released weekly. Multiple difficulty levels from very easy to extremely hard. Grid sizes up to 16x16 for more advanced challenges. Manually selected, high-quality puzzles with a unique solution for each puzzle. Regular updates with new puzzles added to the library. Gaming Features: No ads for uninterrupted gameplay. Unlimited check puzzle to check if you're on the right track. Unlimited hints to help when you're stuck. Show conflicts during gameplay to quickly spot mistakes. Unlimited Undo and Redo for flexibility while solving. Pencilmarks feature to note possible numbers for hard puzzles. Auto-fill pencilmarks mode for easy note management. Highlight Excluded Squares to assist in solving. Lock number on keypad for added convenience. Play and save multiple puzzles at once. Puzzle filtering, sorting, and archiving options for organization. Dark Mode support for playing in low light. Graphic previews show the progress of puzzles as they are being solved. Portrait and landscape support for tablet users. Track your puzzle-solving times to monitor improvement. Backup and restore puzzle progress via Google Drive. Puzzle Variants: Classic Sudoku: The traditional 9x9 grid puzzle. Mini Sudoku: A smaller 4x4 grid for quick, simpler challenges. Diagonal Sudoku: Diagonal lines must also contain numbers 1–9 without repetition. Irregular Sudoku: The regions are irregularly shaped, adding an extra layer of complexity. OddEven Sudoku: Odd and even numbers must be placed in specific rows and columns. Mega Sudoku (tablet-only): A massive grid up to 16x16 for seasoned Sudoku experts.