Tappamistic

Tappamist is a gorgeous looking game wherein you're asked to tap on the screen (i.e. the rotating buttons) leaving out the red ones which appear after a certain instance of time within the 30 seconds time limit. Green button warns you when you should start tapping on the next button, red button indicates you shouldn't tap on it or else you'll your cut short your time limit and finally, the standard Tappimistic button which tells you when you're expected to tap on it, as much and as fast as you posssibly can.

You can share your high scores on Twitter but in order to use this functionality, you will need to have the Twitter app installed on your Android device.