・ Simple operation by pressing numbers in ascending order
A button with multiple numbers is displayed on the screen, and you can simply press the buttons in ascending order.
At first, the number of buttons from 1 to 1 is randomly assigned, but as the level goes up, the range of numbers increases.
・ 3 difficulty levels
The number of buttons that appear in one level is 3x3 (9) for EASY, 4x4 (16) for NORMAL, and 5x5 (25) for HARD.
・ If you press in the correct order, your score will increase
As you continue without making mistakes, you get bonuses and high scores. In addition, the time limit can be extended.