Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Another joyful encounter in Tribez &amp; Castlez! I just met Bartolomeo! Do you want to know who that is? Download the game and find out!
This tweet contains emotions: 
joy