I submitted an 860 AD game w/ the Celts. The only great thing about the map was a free GH settler upon border expansion. There wasnt a lot of food nearby but it was enough. I used Republic to cash rush settlers in conquered land until I was close to domination, and then I switched to Feudie in 230 BC. The rest was pop rush madness.
I self built the ToA, and the nearby Mayans built the Pyramids right when I attacked them. Opponents were Maya, France, and the Inca. Ive been playing an SG scenario so the game settings were messed up at first, I hope I changed all of the requirements back correctly. Pop rushing is tedious work.
Edit: I also tried to get as many self built temples up before 250 BC for the doubling effect. Im unsure about the timing of the ToA build here with the Celts; say I want to finish in 750 AD, what is the approximate break even point between going for culture doubling compared to the ToA effect? You're probably limited to about 100 cities on a tiny map, so Im thinking the doubling benefit works somewhere in the 750-250 BC range.
If that doesnt make much sense (my thoughts are a bit rambling this late at night), say I have 10 temples self built at 750 BC, they double at 250 AD, generating an additional 50 turns of 2 extra culture (extra 1000 culture over that time period). Compare that to the 10 settlers you could have built and an earlier ToA. The immediate temples are nice, but can they overcome that extra culture when the endgame is spent mostly without extra culture to rush?