Sudoku Cards - Classic Game

Contains adsIn-app purchases
2.12K reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
In-Game Purchases
Learn more
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About this game

Classic Sudoku Game for beginners and advanced players! Enjoy the Sudoku Puzzle World 🌍 with over 20,000 free hand-crafted puzzles, all conveniently accessible to you both offline and online. Make Sudoku solving a daily habit and train your brain and memory.

Sudoku Lounge is a number puzzle game based on logic, where the goal is to position digits from 1 to 9 into each grid cell, ensuring that each number is used only once in every row, column, and block. Play our game and relax while completing enjoyable levels, and learn new Sudoku techniques.

Highlights:
✔ Super clean and comfortable game board,
✔ Five difficulty levels - choose from easy, medium, hard, expert, or the unbeatable Invictus! 🥋
✔ Magic Pencil ⭐ - auto-fill all pencil notes with just one move,
✔ Rank your time 🎯 among other players,
✔ Themes - select the color theme 🎨 you prefer, including the Sudoku Dark theme to make it easier for your eyes,
✔ Track your skill growth 💪 with a clean time chart,
✔ Daily Challenges - Complete daily challenges and collect a set of exquisite and magical figurines,
✔ Choose any puzzle by number! Start multiple puzzles and then return to the ones you prefer to continue solving at your convenience,
✔ Customize the game to your preferences - turn on/off sounds, highlight identical numbers or peer cells, auto-remove notes, show mistakes, etc.
✔ Challenge your mind and solve daily updated puzzles!

Additional features:
✓ Use the Sudoku autofill feature to display all pencil notes,
✓ Share the game with your friends on Instagram, Facebook, Twitter, etc.,
✓ Customize themes, colors, fonts; experience a fresh and modern look with our new Material Design theme,

✓ Google Play Services enable you to compare your rank on leaderboards and securely save your progress in the cloud,
✓ Fast input mode for experienced gamers,
✓ Pencil mode - use your pencil notes as you like,
✓ New Sudoku puzzles every week,
✓ Sudoku learning for new players,
✓ Notes taking, error highlighting, multiple undo/redo, and more!
✓ Clean and modern UI design,
✓ Auto-save and sync your progress between multiple devices.

Our Sudoku Lounge game is ideal for players of all skill levels! Also it is a great way to learn Sudoku for the first time.

At Sudoku Labs, we are all enthusiasts who love playing Sudoku! We continuously enhance and improve our game. All our puzzles are hand-crafted to provide you with the best Sudoku experience.

If you have any ideas, questions, or suggestions, please let us know! We are always here for you.
Relax, play Sudoku, and enjoy a peaceful mind with Sudoku Lounge
Updated on
Jul 7, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

1.94K reviews
Devin Rooney
July 9, 2026
They've continued improving, and the hints for the Invictus level have really leveled up my abilities. They scaffold advice over a few steps from suggesting a technique to allowing you to apply the hint. I still have a few minor gripes. I miss the dual number pad layout. Often, I have to hit a number on the pad repeatedly to get it to switch. And in the past few days, some of the app switched to an Asian character set with no ability to fix it.
3 people found this review helpful
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Sudoku Labs
December 8, 2025
Thanks for your review! If you like our game could you give it more stars please? 🙏
K
April 21, 2026
Love the clean look and enjoy the games. I'm trying to learn advanced techniques to play Invictus level and the hints inside the game aren't enough to teach me. I wish i could manually input a game so I could follow along as I watch teaching videos and use the features of this app (pencil marks etc).
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Sudoku Labs
April 21, 2026
Thanks for the review! We will consider these ideas in future app updates
Teiboklang Chyne
August 13, 2026
Nice features, few ads
1 person found this review helpful
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What’s new

Minor fixes
Thank you for playing Sudoku Classic!