You can play Trivia in our IRC channel, there is a Rizon IRC bot which asks the questions, whoever says the right answer first gets points. Sometimes we have actual Trivia competitions at the forum, you can check our Contests section to see if there is one currently in progress or not. But either way, the trivia bot is there so people can play trivia any time.
Once you have connected to #naruto-kun and are inside the channel, just type .trivia and the Trivia bot will start asking questions. At any time you can type .strivia and the bot will stop. To see everybody's scores type .tt