Raise your ability to see things other than the center of the field of view.
When you do this training, will improve the ability of sports such as soccer or table tennis etc.

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How to training
Tap from small number to large number within time limit.(When "Time" is "On")
When you tap correctly you get one point. When you make mistake minus one point.

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This app has these modes.
Normal :　When you clear the stage, you'll get time bonus.
1-99: 　Numbers from 1 to 99 are displayed randomly.
Roman numerals: Numbers are Roman numerals.