Snake Sudoku

Nine serpents, one logic

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Nine winding serpents replace the nine boxes. Same rows and columns, a whole new way to read the grid — free to try, built for solvers who find classic Sudoku too easy. Snake Sudoku keeps the rows and columns of classic sudoku and throws out the nine 3x3 boxes. In their place: nine winding serpents that coil across the grid. Every technique you know still applies — you just have to learn to see the regions again. It is built for people who finished being challenged by ordinary sudoku a long time ago. THE SERPENT VAULT A library of hand-checked boards across three tiers — Intense, Elite and Master. Every puzzle is guaranteed solvable by pure logic, so a board never asks you to guess. Filter by difficulty, see the serpent shape before you commit, and keep your best time on each one. THE DAILY SERPENT One fresh board a day, rated and shared by everyone playing. Build a solving thread and see how long you can keep it alive. A BOARD BUILT FOR REAL SOLVING Pencil marks with an auto-fill option, undo and redo, an eraser, and an optional mistake highlight you can switch off entirely if you would rather work without a safety net. A timer you can hide. Digit counts on the number pad so you can see what is left. THE ASCENT Your solving is rated, and the rating moves with the difficulty you actually clear. Track your fastest solve, your clean solves, your hint-free run and your longest daily thread. Climb from Adder to Viper and beyond, and see where you stand on the Top 30. DUELS Challenge another player to the same board and settle it on the clock. THE CODEX A plain-language guide to solving on serpent regions — naked and hidden singles, locked candidates, and the pattern work that the coil makes harder than a box ever did. FREE TO START, UNLOCK ONCE Play your first few boards free. When you are ready for the whole coil, a single one-time purchase unlocks unlimited puzzles — the full Vault, the Daily Serpent, the Ascent, the Arena and the Codex — for good. No subscription, no adverts, and nothing else held back behind a second payment. Future puzzle packs are included. Privacy Policy: https://preview.apppublishing.ai/legal/390/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/390/terms

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Snake Sudoku is now free to download. Play your first few games free, then one simple one-time purchase unlocks unlimited play — no subscription, no ads, nothing else held back. We also smoothed out the home screen so that once you have finished the Daily, it points you straight to your next board.

Version 1.1.0

The developer, Nancy Velayo, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    Nancy Velayo
    Size
    40.4 MB
    Category
    Puzzle
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Nancy Velayo
  • Privacy Policy