Well, I'm in 5 games ATM: Perpetuality, Dolphin, Allegiances, Sophistry, and Nuance. Sounds like a lot, but in general only one or two of my games at any given time requires a lot of attention, for instance right now here's roughly how long it takes me to do a turn:
Perpetuality (just hitting late game): 45-60 mins
Nuance (latish-mid game): 30 mins
Sophistry (mid game): 15 mins
Allegiances & Dolphin (early game): 5-10 mins
The time I put in varies a lot depending on how busy I am with other stuff. Sometimes I'll rush through a turn, just taking care of the urgent stuff, sometimes I'll go back and pour over a turn several times (when I'm waiting for a host
). Since the host schedule is usually close to 2 days (late games usually get pushed to 3), I'm only playing each game roughly every other day and some days I don't do dominions at all. I very generally try to stagger it so I'm not in more than one or two late games at a time, figuring I'll be eliminated in some of the games before I get there.