You know why the Japanese are using traditional rock garden to relax? This is very simple - in order to free their mind from the clutter of life and to concentrate on the rest, to achieve harmony with the world looking at the smooth and harmonious closed circles and lines in the sand. This game offers you a very short time to set aside the problems and try to find harmony.
The game resembles a normal tetris, with the only difference being that in order for a blocks combination disappeared it is necessary that the sum of digits on blocks be equival to a certain constant. With the mouse, drop tiles in the grid. Try to make adjacent tiles (columns or rows) add up to the required value. Use power-ups to assist in your progress.