This is a addition game.
do a sum in ones head.
You can play one game in 20~30 seconds.
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[How To Play]
You press the button and the total number is issued so that the same.
Button you press will be the sum of adding the same number will disappear.
Disappear and all, I give the time it takes to clear.
Computation is faster and can play.
You can easily play both adults and children.