Starting count for The Game of Time is 19372. I don't expect this to go more than 25,000 at the most. And I expect it to go very quickly now that I'm not agonizing over how to add twice as much material to it than it will sustain.
Another possiblity has come to me -- that's a series of novella length adventures in one novel. I did that with The Good People of Coralville (which will be out soon!), and it worked very well. But we'll see. Right now, the trick is just to get this one done.