[@Light the Dark] I am always cautious when I see anything that says 18+. It's been my experience that the type of people who create those types of games--that is to say games requiring an age limit--are the kinds of people who themselves wouldn't be let into exactly such a game.

There are as many ways to weed out immature RPers, and stupid people in general, as there are people to weed out. Some arbitrary number suggests (to me at least) that the person who created the RP is to lazy to do any of them. It's just a big red sign that says "lie convincingly".

Well, that, and my instant gut reaction is that I've stumbled into Edgy Edgington run by Mayor McEdgy from Edgyborough.

Were it me trying to create a mature game I would state in the OP that I will not censure my players. But I will not accept any players who either are required to be censured, or require others to be censured.