Role-Playing Games

I have found one great idea for using a role-playing game similar to Dungeons and Dragons for getting relunctant writers turned on to writing. I'm trying it out on my summer school kids. Check it out at this site: http://www.creative-writing-solutions.com/legends-of-druidawn.html I'll let you know how it works. Anyone have ideas on how I could incorporate an online role-playing game into language arts?