This is free version of Speed25.
You must look some ads on screen,and you can not skip remain times.
Play this, and if you like this game, please buy "Speed25".
Touch the smallest number on screen,then the panel will open.
You must open the all panels during the time limit.
When the game progresses, a sequence of numbers will continue getting more complicated.
The background pictures is old style Japanese character of number.
They are very interesting.
Please make sure to see all characters.