Thursday is Red Box Vancouver's current gaming night, which I have been using to run Fortress Eibon (relevant aside: when you have a megadungeon with one group playing every week and another playing every third week, unsurprisingly one group gets waaaay ahead in xp, gold, and magic swords!).
We've been wooing the local RPG Meetup group and scammed them into coming down tonight, which is awesome as the more folks the better.
I just check the #'s attending on the meetup page, and with the RSVPs and the regular RBV crew, it looks like there will be 24-odd folks playing tonight. We did arrange for two DMs tonight, but still, thats's still an eleven players per DM ratio.
The largest group I've ever ran is eight players.
I need to start guzzling some Red Bulls...