Simple, fun Sudoku! No frills, just pure fun and mental exercise! Sudoku is the most popular puzzle game in the world. Challenge your mind and pass the time with 123456789. Intuitive controls make it easy to play and great features enrich your experience!

Features:
+ Completely Free!
+ Hundreds of free cards
+ 4 unique difficulty levels, from Beginner to Expert
+ Undo, Hints, Redo, and more!
+ Solving tools to help you visually detect patterns
+ Statistics
+ Auto Check