How to play: Calculate the expression falling from above and select the box with the correct answer below to make it disappear. The game will end when the box with the expression touches the box with the answer, or the wrong answer box is selected a certain number of times.This game will test your calculation ability while training eye speed and hand speed, and has 4 different difficulty levels for you to challengeGame features: ~ 4 different levels of difficulty ~ Exercise your calculation ability and reaction speed ~ Every difficulty will become harder with time ~ No need to network, you can play anytime after installation ~ Suitable for any ageFinally, have a nice day