Such that the sum of the numbers is zero, it is easy puzzle game that will select a panel.
Time 60 seconds. You can feel free to play in clearance time, it is best to kill time.
Maximum (or minimum) value of the panel will be the next number of the last selected panel. When you create a larger number is a high score.
When you get stuck, you can reset the board by pressing the reload button at the upper left of the screen.
In achievement, high scores and maximum combo number, can be confirmed panel that created until it. It is possible to look back on his play.