Dark Sudoku - Classic Puzzle

Contains adsIn-app purchases
108 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
In-Game Purchases
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About this game

Embark on a captivating journey of logic and strategy with Dark Sudoku, the ultimate Sudoku game that challenges your mind and sharpens your analytical skills. Immerse yourself in the timeless puzzle-solving experience that has captivated millions worldwide.

Dark Sudoku has 15000 different puzzles and comes in five well-balanced difficulty levels: flash, easy, medium, hard, and evil 😈. All puzzles can be logically solved. The easiest puzzles are a good start for beginners while the hardest ones require knowledge of advanced solving strategies. In addition, the built-in puzzle editor allows you to create your own puzzles or scan paper puzzles with a camera.

Well-designed intuitive interface with beautiful Dark Mode allows you to fully concentrate on the game without any distractions. Newcomers can quickly learn how to play the game with the help of a tutorial. For advanced players, Dark Sudoku provides the ability to make notes and build “Chains” (required for different “Chaining Strategies”).

Key features:

• 15000 free Sudoku puzzles (3000 for each level)
• Five difficulty levels: flash, easy, medium, hard, and evil
• Built-in puzzle editor to create your own puzzles
• Scan paper puzzles with a camera
• Two input modes: "Digit first", "Cell first"
• Simple and intuitive interface with Dark Mode
• Ability to make notes and build “Chains”
• Auto-fill candidates
• Unlimited undo
• Eraser
• Statistics for each difficulty level
• Leaderboards
• Smart hints
Thousands of Sudoku puzzles in varying grades of difficulty.
Updated on
Jul 26, 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.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

103 reviews
A C
February 7, 2023
It's nice to have dark mode, however I have to say the difficulty on this is strangely high. I'm no sudoku master, but I'm pretty good, & even on easy the puzzles are pretty difficult. Of the dozen or so other sudoku apps I've used, it's like the "easy" setting on this is equivalent to a "hard" setting on other apps. Just a bit frustrating. Ads are only a bottom banner, which is great. Difficulty is more my stupid brains fault, not the devs, so this is a good one for dark mode sudoku.
3 people found this review helpful
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Harmony
February 23, 2026
Great game, great for playing in dark environments. The settings were a little difficult to navigate but once I found the number first/cell first option it played how I like. One thing that drew away from my enjoyment was the scoring and achievements, when the mistakes don't mean anything I could power through any difficulty of puzzle in less than 2 minutes.
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Sergiy Pasternak
April 1, 2026
Thank you for your feedback! Mistakes don’t affect scoring so you can complete puzzles without worry — similar to solving Sudoku with a pencil on paper. Perhaps in future versions, this could be adjustable in the settings.
C. Ouellet
May 27, 2024
Edit : app is working again less than 24h after my review! Thanks! Used to be my favorite sudoku app but it doesn't work anymore, it won't open. I uninstall the app, restart my phone and reinstall. Still doesn't work after trying for over a week. Hope it gets fixed soon...
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Sergiy Pasternak
May 26, 2024
I'm sorry to hear that you encountered issues with the game. I always strive to fix all the bugs as quickly as possible, but unfortunately, I haven't been able to reproduce the problem you experienced. Once I manage to reproduce the bug, I will make every effort to release a fixed version as soon as possible.

What’s new

Android SDK updated to meet Google Play requirements.