S3DOKU

S3DOKU reimagines classic Sudoku as a 9×9×9 cube where every layer is a valid Sudoku puzzle.

Explore the cube from three axes, switch between focused 2D layers and an interactive 3D view, and use cross-layer logic to solve a puzzle unlike any flat Sudoku.

FEATURES • Interactive 3D cube with orbit and zoom • 27 interconnected Sudoku layers • Easy, Medium, and Hard difficulties • A daily puzzle generated from the date • Pencil marks and automatic candidates • Undo, redo, pause, and automatic saving • Multiple error-checking options • Light, dark, and system themes • Haptic feedback and reduced-motion support • Fully offline play with no accounts, ads, analytics, or tracking

Easy and the daily puzzle are free. A single optional Full Game Unlock permanently opens Medium and Hard difficulties.