Momentary number guessing game

As you challenge the game many times, you will be able to strengthen your mind by increasing your field of vision and instantaneous power for numbers.
In addition, you can rank "smartness" based on the time you cleared the game.
Once you get used to the game, try a comprehensive game and compete with others for "smartness".
I'm sure the amazing geniuses in the world are setting threatening records.
By practicing in this game, your ranking of your numerical smartness will go up.

Enjoy various things such as activating the brain, preventing dementia, improving numerical thinking, and killing time.