I'll probably have close to 20 players in the end, so, for the immediate future anyway, I'm not accepting any more players to my Dwimmermount play by post game over at OD&D Discussion. If you haven't yet sent me your character's ability scores and I told you to do so, please try and get them to me as soon as you can.
Since Dwimmermount is a huge place, I plan to divide the PCs up into two (or possibly three) parties and have each of them enter the dungeon through a separate entrance. I think this will be interesting, since it's a style of play I haven't seen since I was a kid, even though it was fairly standard in the formative years of the hobby. Moreover, I know all too well that play by post games quickly and often suffer attrition. I imagine within short order that I'll lose more than a few of those 20 players. Of course, if I'm wrong on that score, I'm fine with that too. I rather find the idea of so many players interacting with the same dungeon environment, albeit in several groups, quite intriguing.
As I said, this should be an interesting experiment.