this 90 Level Sudoku is the best way to improve your skills in this puzzle game.

With More than 90 level, Sudoku 2016 by Grindev is the #1 Sudoku game you know and love for your Android phone and tablet, and the best way to learn and improve your skills in this classic puzzle game. with 30 easy level,30 for the medium and 30 hard level

With our Sudoku app, not only will you play a beautiful user-friendly Sudoku, but you’ll also have access to the world’s most friendly and complete mobile Sudoku learning system.

With every puzzle, our “Hint” button can teach you the techniques you need to make progress. The instructions are easy to understand and unique for every puzzle- with helpful animations and colorful visuals. The hints don’t just give you the answer, they help you learn the “why” behind the answer. This feature will help you learn all the techniques you need to solve Sudoku puzzles whether you’re a complete novice playing your first game, or you’ve progressed all the way to expert difficulty.

Enjoy a clear, easy to read, and customizable Sudoku board with visual guides that make glancing at the possibilities a breeze.

Our input system is designed to make entering solutions and notes magically simple and our friendly scoring system allows you to compete with yourself or your friends regardless of skill level.

Sudoku 2016 by Grindev will be the most beautiful, learnable, and user-friendly Sudoku game you’ve ever played, and it’s completely free!

during the game, you will be able to

★ Auto highlighted numbers for intelligent hint

★ Use pencil marks

★ Double-click the cell to erase numbers

★ Use various kind of items, like check the errors

★ Unlimited redo & undo

you can also found more useful functions like

★ You can share to your friends via Google+, twitter and facebook

★ Auto-save, you can pause at anytime you like without losing any progress

★ Use Dark mode in the night to protect your eyes

★ Timer, you can also disable it in settings

★ Selected cell highlighting

★ Incorrect digits mark

★ Enchanting visual effects

★ Various numerals like Chinese or Roman

★ Dark theme to protect your eyes while play in the night

★ Universal App looks great on phone and tablet

★ Give us feedback in the game, with your help we'll make it better