Catdoku

CatDoku is a cozy Sudoku game where numbers become adorable cats.

Solve classic Sudoku puzzles using a cast of nine cute cats, each representing a number. Whether you are new to Sudoku or already love logic puzzles, CatDoku gives you a gentle, relaxing way to play at your own pace.

Instead of filling the board with numbers, you place cats into the grid. Use logic, notes, hints, and undo to work through each puzzle while enjoying a soft, cozy visual style.

Features:

Classic Sudoku gameplay with a cute cat twist
Nine unique cats instead of numbers
Multiple difficulty levels
Notes mode for planning your moves
Hint system when you need a little help
Undo, erase, reset, and pause options
Optional timer
Best times tracking by difficulty
Cozy color themes, including light and dark options
Settings for mistake highlighting, matching-cat highlights, and related-cell highlights
A calm, forgiving puzzle experience with unlimited mistakes

CatDoku is designed to feel cozy, clear, and satisfying. It keeps the logic of traditional Sudoku while making the experience softer, cuter, and more playful.

Take a breath, pick your cats, and solve one cozy puzzle at a time.

Recent changes:
Small accessibility and visual polish update:
- Improved note number readability
- Adjusted Larger number labels mode so symbols remain easier to see
- Improved board and picker label spacing
- Added stronger high-contrast highlight colors for selected cells, matching symbols, and related rows, columns, and boxes
- Updated highlight colors across themes for clearer, more consistent readability