Here's another game I thought up based on the traditional "Below user" format. All you have to do is post something you think the above user would like.
For example...
User 1: I recommend Banjo Kazooie to you because you seem to like adventure games.
User 2: I recommend pizza to you since you seem to like Italian cusine.
I'll start and the first person to post a comment gets to recommend something to me.
Have fun and don't be rude if someone recommends something you don't like.