400 Turns of Civilization V
Wes found a preview of one of the most anticipated upcoming releases by the inhabitants of my office: Civ V. It starts "This preview of Civilization V is incomplete. It takes more than nine Earth hours, you see, for the great Arabian empire — land of Mecca, Rio De Janeiro and Beijing — to assume dominance of the globe."
but I think the consensus was that Civ IV was a flop
Source?
Anecdotal, obviously, but I don't know anyone who doesn't think 4 is the best one. I'm still playing it regularly (some single player, some multi with wife + friends) and if 5 isn't great I probably won't stop.