When getting kids together for a party, sponsoring a gaming club at a school, Pit is a great game to get everything started. It really doesn't matter the age either. I have seen kids from 2nd grade all the way up to high school, enjoy the game.
I think one of the reasons is that it does allow kids to "cut loose."
At a gaming "class" I am teaching at the local summer Kid's College, this was the first game of the first class. After running through the game with them and playing a first game they began playing the second game on their own while I opened windows. I looked over and said, "Oh you're being far too quiet for that game!"
Very soon, as I struggled to open stuck windows, I heard an explosion of sound as they quickly began to get more comfortable with the game and the class. I have seen this game break down barriers and quickly getting kids to talking and having fun.