Wow, I just tried this and managed to win but in 1995 blech. The map basically had hardly any land masses more than 2 tiles wide and most were just snaky one tile islands. I ran my slider at max from early on but I only ended up with 7 cities total and 2 of them were from cultural flips on cities that weren't my main 3 culture sites. I didn't figure beelining astronomy would have helped much because there just wasn't much desirable land available and the one good continent in the game was controlled already by Gilgamesh and he had a pretty good army. My second and third culture sites finished within 30 turns from each other and about 70 turns after my first. Any comments?