I went back into my last game (already won) just to...well try stuff out. I'm insanely happy (600+) due to all the SPs I've taken so I started founding cities like Hiawatha does (anywhere will do), and my core cities can crank out a settler in a single turn. Thing is I've already founded at least another dozen or so, and if anything I'm getting happier; and as I've never been in a remotely similar position I wondered if there is a game limit?