The goal of this game is to scare the calm guy in a certain period of time. Press the START button and yell in the phone as long and as loud as you can. The guys face will start changing from happy to scared. If you shout loud enough and frighteningly enough, you will earn a lot of points and advance to the next level.
After each level, you will be shown the statistics of how powerful your yell is. Go to GameCenter and find out who the nosiest person in the world is!