Sudoku by Nestor Yavorskyy

Sudoku (数独 sūdoku, digit-single) - is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9.

• 100 brain-teasing Sudoku puzzles
• beautiful minimalist design, more than 10 color themes
• 10 ambient relaxing soundtracks
• 500 achievements
• 15 Trading Cards, Badge, Emoticons and Backgrounds (Coming soon)
• Cross-platform saves via Steam Cloud
• Windows, Mac & Linux
• Free DLCs with community-generated achievements