We've never made any promises about one. There's been mentions in past that with some help in organizing one, it'd be cool to do one again, but I can't ever think of a time where any of us have promised it.
Personally, I've got no idea how the game is done or how it works, so I can't get one started up, but if some people were committed to keeping on task and helping set one up, I'd have no problem getting another game going sometime this summer.
You have a Marshmellow Homestar is on the 30-somethingth page. You can't see him yet, but he's there. If you get the marshmellow to Homestar (being first to post on that page), he gives you some sort of prize. However, You must HAVE the Marshmellow. If you do not, the person who did have the marrshmellow gets the prize. You ARE allowed to have weapons.