To provide a game that fosters agility and explosiveness using fingertips and also helps activation of the brain by simplifying the game itself and by quickly clicking numerals appearing on a screen with a touch pen, while a conventional game machine is rather difficult for the aged and is likely to get weary.

When a screen is touched, numerals appear at random at a different place each time. With a right answer, it tells with a clear ringing sound and the numeral disappears, with the number lit up in a frame. When the next screen is touched, numerals appear again. When a problem consisting of ten questions is finished, upward/downward arrows and positions of numerals differently appear next. Remembering the upward/downward arrows and guessing/detecting the places where numerals come up, a player uses his fingertips to click with a touch pen, while the places of the emerging numerals always change to necessitate quick detection.