Sereno: Capybara Sudoku

Sereno is the capybara Sudoku: a relaxing 9×9 Sudoku with Sereno, a capybara with a tangerine on top who keeps you company on every move, and 40 friends who move into Sereno's spa one by one. Free and offline.

🍊 A CAPYBARA WHO TEACHES
Sereno sits at the edge of the board, cheers for every row, column and box you complete, and dozes off if you wander away. When you get stuck, the tangerine flies to the right cell and Sereno explains why: "this box has only one empty cell: the 3 is missing". Hints teach the technique instead of just handing you the number.

🧩 400 LEVELS, ONE SOLUTION EACH
From easy to expert, across 40 painted places: Tranquil Garden, Serene Lake, Misty Valley, Gentle Shore, Sweet Waterfall, Blue Reef, Snowy Mountain and many more. Every level has exactly one solution, checked by computer, and can be solved by logic alone: you never need to guess.

🐰 40 FRIENDS TO MEET
A friend lives in every place: a bunny, a duck, a coati, a sloth, an armadillo, a maned wolf, a toucan, a jaguar cub... Finish the place and they move into Sereno's spa, the hot spring on the home screen. They all go into the album, with a name and a story.

✨ NEW RULES ALONG THE WAY
Classic Sudoku is still most of the game, and little by little new twists arrive: diagonals, pebbles (a cell with a pebble holds an even number), wild gardens (boxes with free shapes) and windows. Every new rule comes with a short demo before you start.

🧭 LEARN BY PLAYING
The first level is guided: Sereno shows you the box, the row and the column that have only one empty cell, move by move.

🗓️ DAILY CHALLENGE AND FREE PLAY
A new Sudoku every day, with the whole week in view, plus free play in 4 difficulties: easy, medium, hard and expert.

🎵 NUMBERS THAT PLAY MUSIC
Every number is a kalimba note, every finished row, column or box plays a chord, and a win becomes a golden wave with music. Calm music that changes with the place and nature sounds in the background.

💡 MADE FOR CALM THINKING
Notes, undo, erase, row/column/box highlight, notes that clear themselves, big numbers, 3 lives per game and hints that come back every week. A shop with 6 board themes and a gift every day.

No sign-up. Works offline. Take a deep breath and solve one number at a time.