Hmmmmm, well I'd usually say as many as one can handle but since this'll be like a d&d game as well I'd say 3, one main and two back ups for when the msin dies. I'll control NPCs along with a co-gm/gms. But I'll also want to have a character or characters tp interact with everyone elses on adventures and such. The 3 limit is just a bit of a suggestion we can all brainstorm to see what would be appropriate.