"The Roleplay tab hosts our “full-featured” games. These games offer more features, and an arguably more interesting layout than a thread may be able to provide (though it’s really down to personal preference). On the upside, it is probably easier to find the kind of game you’re looking for with all of the different sorting and searching options. On the down side, some users may find it confusing or intimidating at first."

I read this in the Newbie Guide, but it doesn't explain how to do it.
I've roleplayed in forums before so I know how that works.
Can anyone help me understand the roleplay tabs?