yeah, the jungle experiment wasn't worth it. i just finished the Babylon/Immortal/Science victory in 1878 with 4 cities and i had population problems early on. my 4 cities finished with 14, 12, 10, 9 pops, and 10 was in the capital. i tried to put a trade post on every jungle around it and it wasnt a good idea long run. they helped early as defensive slow movement tiles but otherwise i really could have use hills and farms instead. it was a learning experience though. needed several reloads to avoid some ruinous micromanagement decisions. i got into a prolonged war with America, from like 1450 to 1850, but i didnt get ganged up on.
Korea was the biggest threat in the game, had a HUGE game score, like over 2000 when i had finished with 780. But the science race didnt pan out. The AI just never builds parts. this was also my first game that i got aluminum and uranium to spawn within my borders. never had the opportunity to build and use a Spaceship factory until now. i rush bought them both after a massive fire sale on buildings and resources.
and i settled 2 cities next to mountains but i was only allowed 1 Observatory (its not a wonder and i didnt think it was a unique building) and it doesnt have specialist slots. You also cant sell them after you get all the techs researched. kind of a bummer, but the one in my capital got the city's beakers over 150/turn so it was worth it. im sure it is quite awesome with Korea with the completion bonus.