1324

Every four seconds central number will plus 1-10.

Red Square=1,Green Square=2,Blue Square=3,Aqua Square=4,

Tap them to make them plus equal to the plus part.

When right number will plus 1-10,when not then this round is over.

Number's color will change every second.

When aqua left 4 seconds,3 when blue,2 when green,1 when red.

If still confused you can press the T to watch tutorial.

Thanks for you support and wish you have a good time.