A simple rule to touch the number panel in order from 1 to 50 in order of 1.
Play casually when you want to do, strengthen your concentration and reflexes while leaning your brain, playing brain healthy game.
From children who can not calculate yet, you can enjoy elderly people who are not good at difficult rules.

Recommended for people like this
・ The difficult rule is a little weak
・ I want to train my brain using gap time
・ People who want to make the brain happy
・ Those who want to concentrate, reflexes, attention