UNITILE app for iPhone and iPad

"UNITILE" is a simple puzzle game.
The players goal is to put blue tiles on all of squares on a board with 10 rows and 10 columns.
You can choose the color of next tile by clicking the buttons above the board.
When you put a tile on a blank square, all tiles in the same rows and columns will turn over to became opposite color.
But if there are another blank square in the same rows or columns, the tiles beyond the square will not turn over.
Game is over when there is no blank square and there are still red tiles.

Its a very simple rule, but you will find its extremely hard to go over level20. Enjoy.