Cosmos Sudoku is the game of mind or puzzle with awesome nature images and interactive user interface. Fill in the cell (grid) so that every row, column and sub Matrix (3x3 box) having digits 1 to 9 without repeating the numbers in same row, column and 3x3 box. The faster you complete the game, the higher your score. Features: - There are three modes, Easy, Medium, and Hard with three levels. - Each Level with 9x9 boxes contains different puzzle in user interactive way. - Different nature images for each mode.