Played in two campaigns in my life. The first was a one-off in a summer camp that involved a small classroom of middle schoolers or so. Was about the local guilds in a town having a kill an evil wizard or necromancer and an approaching Orc army. [i]A Sudden Happenstance.[/i] GMed by one of my 40k friends who works in theater, and set in the same universe a friend of his used for a campaign he's in. I told a bit about it in some DnD story threads.