This is the longest game I every played I guess.
The grave mistake I made was that the tree tile 2E of Rome was wrongly assigned to Arretium. Because of that, I was 1 turn away from completing the Pyramids and forever. I received 471 super-fail gold. Till the end of game I never had the chance to take it back by force. Anyway, I got most of the wonders I needed, the Parthenon, the Mom, the Great Library, the Taj. I was the first to discover Music and philosophy, and first to circumnavigate. Gandi took liberalism. Btw, I forgot to use great scientist bulb to accelerate the research. If I had used one of them on education, I would have had a chance for liberism too. No gs bulb, no academy. I saved all the great people for 4 golden ages.
Bismark and Hannibal were at war for many years. Prolonged war slowed them both down. When I attacked Hannibal and Bismark with cavalry, Hannibal only had cuirassiers and musketman while Bismark only had knights and medieval units. They both surrendered after I took 2 cities.
My next target was Khmer. Instead of confronting me in his own continent, Sue sent his troops to my undefended colony to the east. I took 3 cities from him and he took 3 from me. That looked like an even trade...So I called for a ceasefire and waited till I built a small army equipped with artillery on my new colony. I took my cities back and 5 more from Khmer before he capitulated.
In my original plan I would attack Saladin next since I already acquired a foothold on his continent and a teammate. But I noticed something weird. Gandi who had been the most advanced throughout history suddenly fell behind.
OK. Gandi first. I splited my forces into 2 directions. Veteran calvary army targeted at northern coastal cities including Delhi, while new tank army approached from south. To my surprise, Gandi resumed teching. He swiftly caught up with me while I rallied my forces. My northern group went on well, but my southern group(20-ish tanks and artillery) was completely destroyed upon landing...Fortunately, he didn't have time to build railroad network. I called for a ceasefire again. This time I build a bigger force. I took 9 more cities before accepting his surrender in 1848. Justinian was a much easier target. He dow'd Gandi before but at last he gave Gandi a city for peace. Gandi's cultural pressure allowed me to attack Byzantine border cities directly. When his big calvary stack was destroyed by my tanks, he capitulated in 1860.
Meanwhile Saladin built the UN. I wanted to have more modern warfare so I didn't choose the diplomatic victory option. Instead I completed the Manhattan project and used UN resolution for a painless switch to universal suffrage to rush ICM by gold. Actually I learned something. Even though tactical nuke can be rebased to any cities just like an fighter, the latter can be directly rebased to a carrier in ocean while a nuke can only be rebased to a city and then loaded to a submarine.
I usually play deity. I think a map with 850+ tiles can be tagged as hard to win because of AI's scary research and production speed on deity level. This game is just nice. Thanks for the game and all the efforts to keep botm alive.
I still didn't manage to get any Wonders, but at 1AD I had 7 cities and 29 pop, with a settler waiting for a safe opportunity to plant another city. I settled the island well before Hanny settled his south coast, so this time I had trade routes and could keep my exploration going. I beelined Astro to the exclusion of nearly all else, and then managed to backfill most techs pretty well. By 1500 I was nearly caught up to the two leaders; with the prospective help of my new colony, with 6 cities I'd settled on the eastern island, and a monopoly on Chemistry, it was looking good to gain tech primacy before long, so I optimistically declared myself Inevitable Winner (with undetermined victory condition) and started BOTM 301. 
