Yup he's absolutely right!
For the College Dorms, you have to talk to the Count; he will give you a room, and you get to pick a muppet to be your roommate (as long as no one else has the same one). Then you just role-play as both yourself and your roommate. The Dorms is a continuous game (i.e. it doesn't have an end).
We have had other role-plays in the past, but they almost always have a start and finish. Recently, we have had Muppet Survivor, and Big Brother. I don't think we have any role-plays going on right now, but to join one, you have to be around when it starts, and sign up for it.
To play all the other games (Word Association, +/- game, etc.), go to the first page of the game thread and read the rules. Then go to the very last page where the newest posts are, and continue the game by adding a reply.
You cannot start a new game. No one can except moderators. They took away that option because when anyone could create a game, we would have multiple similar ones. If you have an idea for a game you can message a moderator (i.e. Fozzie Bear) with your idea and the rules, and if there isn't a similar game, he will set it up.
Hope that covers everything!