Equivalence.

"equivalence" will train your concentration speed,in less than a minute.

-- New mode "Level Challenge" added! --

Aim the "Level 100" by clearing the stage appearing

Are you confident of your concentration?

“equivalence” will train your concentration and reaction speed, in less than a minute!

The rule is simple: Tap the pair of the same numbers as fast as possible, to open the gate.

>Level Challenge mode[New] limits of their own by clearing the conditions of level challenge mode for each level.

>Time Attack mode Open 10 gates as fast as possible! You will only need 30 seconds of your free time!

>Endless mode Challenge opening as many gates as possible! Countdown clock is ticking, but the remaining time increases each time you open the gate.

>Online ranking Take part in the world ranking. The daily ranking is also available.