I abandoned one game in which I stayed in despotism all the way to Fuedalism, hand built Pyramids, & didn't build ToA. Played as Babylon with all AGR opponents (Maya, Celts, Dutch, Sumer, Iroquois) in the hope that they'd build more cities for me to take. Didn't concentrate anywhere near enough on expansion, but kept a very tight build with early culture builds. So I didn't have a big enough base to get up to a proper amount of culture.
Second attempt is working much better. I'm at 500AD, currently looking at a finish around 950. It might be possible to get it under 900 if I'm lucky. Made 2 big mistakes in this one, but I don't have the patience to try again at the moment. I didn't realise just how little commerce there is in Feudalism, and didn't realise that even at 100% tax, ~400gpt maintenance & 200gpt of pre-taxmen income doesn't balance very well. I was in Republic doing a 50-turn run at education, but I was using the cash to rush 1-2 libraries per turn. I should have been stockpiling. I also waited far too long to switch from Republic to Feudalism. When I did switch, I turned up the research as well, I probably should have waited the 10-15 extra turns to stay at 1 scientist and stockpile the cash. It's currently a constant battle to stay out of bankruptcy, and all the taxmen are slowing growth and hence pop-rushing in cities. Next 100k game I play will be done much better, but it won't be for this gauntlet.
Just looked at the 2 games at 10AD, which is when I abandoned the first game, and I didn't realise just how bad the first game was. City count is 33 v 87, cpt is ~100 v ~500