Sudoku Free [BETA]

Sudoku is the famous game... You might know how to play. And now, we challenge you.

Features:
- 3+ difficult levels
- Default 90 sudokus, and can download 400+ sudokus.
- Many themes.
- Material design
- Multiple input type
- Support checkpoint, undo, restart,...
- Create new, or edit sudoku by yourself
- TOTALLY FREE