I ended my war against Wang Kon's Korea in 1260 AD T186. My 12 cities are the largest civ on the map. 6 of these 12 are conquests: Susa from Cyrus; Vandal from the barbs; and Pusan, Seoul, Wonsan, Pyongyang from Wang Kon. I grabbed Feudalism, Theology, and Metal Casting in the peace treaty, but I am still 4 techs behind Wang Kon, and at least 5 techs behind the other civs. Hannibal is the only leader to never be in a war, but he claimed much land to my east, and has the second-largest civ. Genghis is the only other leader to conquer cities: he took Bombay from Asoka and Tarsus from Cyrus, so they both capitulated to Genghis.
I never adopted civics after Slavery, until now in T186. I want to limit my anarchy to 1 turn, but I forget that Hatshepsut is Spiritual, so we never have any anarchy. I exit slavery and adopt 4 civics.
Hereditary Rule does nothing now (while my cities have +8 happy from resources), but will help with city growth.
Vassalage would have been good during the war, but I didn't unlock it until this turn; it lowers the cost of maintaining my large army.
Caste System unlocks scientist specialists without libraries; I want it because I have 12 cities and only 5 libraries.
Organized Religion unlocks missionaries without monasteries; I will spread Buddhism (for gold from the Mahabodhi) and Hinduism (for Apostolic Palace votes).
Hannibal claims in T186,
"We have enough on our hands right now." I fear that Hannibal's hands hold a plan to attack me; I have 2 War Chariots searching Carthage for a war stack. My cities nearest Hannibal are producing a War Elephant and a Stable. I have 3 cities on Buddhist Missionary, 1 on Market, 1 on Lighthouse, 1 on Moai Statues, and 4 on Wealth.
My biggest need is to keep all 12 cities, but between T186 and 1270 AD T187,
"Wonsan has revolted and joined the Khmer Empire!" I'm down to 11, and Suryavarman, who started the war on Korea but never got a city, now gets a city. I never restored order in Wonsan after I conquered it from Korea. The red fist continued from the Korean resistance to the 1st Khmer revolt and now this 2nd Khmer revolt. The loss of Wonsan is a surprise. It is 4 tiles from the nearest Cambodian cities, and I expected any revolts to be Korean, not Khmer. (Wonsan has more Korean culture than Khmer culture, but is far from the last Korean cities.)
I spread Buddhism with a new trick. (It is new to me, but I learned it from this forum.) I run each missionary across a border and give the unit to a foreign civ. The AI leaders then use their missionaries to Buddhify their cities. By T188, Buddhism is the largest religion in the game, and the Mahabodhi doubles in value from 14 to 28 gold per turn. In T251, the Mahabodhi yields 39 gold per turn.
Between T187 and T188, I accept Hannibal's demand to stop trading with Asoka, and refuse Wang Kon's plea to become my vassal. Between T204 and T205, Hannibal declares war on Wang Kon, as his war stack advances on Cheju; so in 1450 AD T205,
I declare again on Wang Kon (and grab 2 of his Workers). In T206, I become the 3rd civ with Nationalism, and trade it to Hannibal for Machinery and Paper.
I sacrifice 3 War Elephants to conquer
Namp'o (12th, 1510 AD T212).
I pay 910 gold in tribute to Genghis in 1512 AD T215, while Genghis is warring Suryavarman. (The 910 gold includes some gold from looting Namp'o and failing the Taj Mahal; I had been jumping between 0% and 100% science.) The tribute slows my research. My renaissance civ is still using classical War Elephants and Catapults to attack Wang, and would lose a war against Genghis or Hannibal. This war is easier than the last war. Hannibal distracts Wang while I attack Wang's longbows in cities. I conquer Wang's last continental city,
Inch'on (13th, 1535 AD T217). Hannibal has conquered 2 other cities.
I would make peace, but Wang refuses to give Engineering, and I refuse to take only Compass. Korea is still alive, because Wang settled Ulsan on an island north of Pyongyang. Hannibal can't reach Ulsan, but I chop around Pusan and build 3 Galleys there. Wang sinks a Galley, but I sink his Caravel, build another Galley, ferry units from Pusan to Ulsan, conquer
Ulsan (14th, 1610 AD T232), gain Ulsan's overseas trade route, end my
Northward War, and erase Korean culture from the map.
I believe that Wang's Korea and my Egypt had the most vulnerable positions in the middle of the continent, so I am happy to see the implosion of Korea, instead of my civ.
The long war between Genghis and Suryavarman sees its first city captures between T231 and T232, as Suryavarman takes Bombay from Genghis, and Cyrus takes Wonsan from Suryavarman. Genghis, without Bombay, now can't reach Suryavarman from his cities. I fear that Genghis will make peace with Suryavarman, then attack me. I would adopt Nationhood and draft Macemen, but Cyrus (vassal of Genghis) would crush me with his Cuirassiers. The peace happens between T233 and T234; Suryavarman returns Bombay to Genghis.
I get Constitution and Gunpowder in 1645 AD T239. Genghis claims,
"We have enough on our hands now." Those hands probably hold a war against my Egypt. I might use Constitution to adopt Representation (to add beakers to my Caste System's scientists) or to build Jails (to switch my economy from beakers to espionage). I have no Jails, so I go for beakers. I exit Slavery and Vassalage and adopt
Representation and
Nationhood. I begin to draft Musketmen and produce more Musketmen. I rank 1st in food and 1st in production, but Genghis has 2 times my power, and Genghis plus his vassals (Cyrus and Asoka) have 3 times my power.
I speed toward Democracy after I accept Asoka's offer to pay 720 gold for my Printing Press. I had avoided trading with Asoka (worst enemy of Suryavarman), but I accept this trade, because I need to advance my civ before Genghis crushes it. Then on T245, I switch all 14 cities to Research, and change a few wrong specialists to scientists. This is just enough to finish Democracy on 1680 AD T246. I trade Democracy to Cyrus to get Guilds, Engineering, and Compass. The trade happens just in time. I see Genghis's war stack.
Genghis has 11 Knights, 7 War Elephants, among other units, just outside my border on T246. They might attack my city of Westephant. I attach 2 Great Generals to War Chariots, and spend a Great Prophet to start my 1st golden age (of 12 turns with the Mausoleum of Mausolos). I end turn, and
Genghis declares war (1685 AD T247)!
For the first time, someone declares war on me. The other leaders were cautious or annoyed at me for most of the game, but I never picked a state religion; so Hindu Suryavarman declared on Buddhist Wang, and other leaders declared on civs with different religions, until now. The present war is 3 versus 1, as Genghis brings his vassals Asoka and Cyrus against me. To my west, Cyrus moves his stack out of Wonsan toward my Seoul. To my south, Genghis moves toward Westephant. Between T250 and T251, Genghis conquers
Westephant (and unplugs my only source of ivory). I attack Westephant in 1705 AD T251 with Catapults and War Elephants, and slay some of Genghis's units, but can't liberate the city.
This war might decide whether I win the game. I predict that Genghis will attack Shroom City, my capital, and site of Egypt's Heroic Epic. If Genghis conquers Shroom City, then I expect to lose the game. If I keep Shroom City, then I might recover Westephant and win the game (if Suryavarman or Hannibal don't outrun me to victory). There is good news: I continue to rank 1st in food and production, and I am near equal with Genghis in power (after becoming the only civ to adopt Nationhood and draft units).
There is bad news: I lost several Musketmen at Westephant, and might have too few defenders in Shroom City. My golden age ends in 7 turns. Genghis is switching from Knights to Cuirassiers. Genghis's vassals, Asoka and Cyrus, might make bigger attacks later, but for now Asoka has too few units, and Cyrus's attack on Seoul might be failing. I don't know whether I win the war!
->Mining->BW->Pottery->Writing
. I reloaded t6 and played more sensibly 
(so you can change some farms into workshops) and it's required for Refrigeration - Superconductor - Genetics.
