Try to touch the target that is moving around in the screen 30 times as quickly as you can! 
When you touch the screen that doesn't contain the target, you will get miss that will add two seconds to your current time. 
So, be try to touch it accurately! 

CAUTION! 
This is "GREE" oriented application. 
Account of "GREE" is required in order to play. 
The account can be created for free.