Many exciting reports!
Continuing the Contender save. Had killed off Achilles in 400AD or so, and declared on Sarpedon soon after. It was a bit messy, but we took two cities including his capital before getting peace for construction. Pumped out elephants and some catas the next 10 turns, re-declared in 1100AD and quickly killed him off after that. Hera next on the chopping block. Didn't want to kill her off entirely, though, also because she had some cities far into the eastern ice, with zero resources. But they prevented barbs, and I had more than enough problems with those in the beginning. We did take all the cities worth keeping, though. She gave us Engineering for peace (another reason to stop the war, as castles are super annoying).
Changed plans from the 1000AD update of going for Civil Service, to bulbing Astro. It became clear it was needed. Didn't get two GS for it though, because Poseidon kept pipping me to new great people, moving the goalposts. But I had one, then we teched the rest of the way, a little before 1300AD. Shortly after this, before we had been able to get caravels far, Arges-Brontes found us with caravels, and within a few turns they proved the world was round. I wasn't able to buy maps yet, or I forgot (we didn't have Paper tho | edit: I remember now, we didn't have

to buy it because we ran out while getting to Astro and upgrading two triremes, and obviously didn't want to trade away Astro, which was the only thing we had on them). Holy moly what a pair of giants. 30-odd cities between them, and they were huge (I learnt when we traded maps). Way ahead in tech too, although nothing too scary yet. Unfortunately they went Mercantilism pretty soon after we got Astro, so that was disappointing. Think we got 5 turns from one of them, while the other changed a bit later. They didn't leave Mercantilism until very, very long after.
At this point it may have been possible to take them on militarily, for now we had monopoly on Astro. But they had knights and castles, and we didn't really have a suitable army, so it would be a very long slog, and possibly a suicidal mission. Instead, I decided to go for Diplo. It was reassuring to see we didn't have the -50 or -100 diplo hit with the Cyclopes. However, their pop was huge. Slightly over 50% when we met them, while we had 28% or thereabouts. We would have to gain 100, probably 150 pops on them. But that wouldn't be enough if we just voted for each other. Therefore, I had to use a trick I recently criticised, namely to build the UN and then gift it away. Hence, why Hera was left alive. Another candidate appeared as well once we learnt Physics and could 'scout' out their not-so-warm Hell. There is a saying about that... maybe not good news?

Toku was an entirely appropriate leader for Hades tho!
As an aside, this almost left me in stitches (from the post-game screen). Have to admit I was not aware this is how things played out...
The Arges crew won Lib in 1390AD and picked Economics. The turn before I had traded them Astro, because I was worried they would pick that. Figured it was best to get something for it. We got Edu, and I got up Oxford in the capital. It actually didn't take all that long after this before the Cyclopes declared war on the snowmen. I don't often see amphibious AI invasions, never mind successful ones, but they pulled it off here. Did take a bit of time before they got rolling, but eventually Cronus was nearly wiped out. Poseidon tortured Atlas with Privateers, while Arges and Brontes farmed XP with Frigates against Triremes and Galleys. During this war the Cyclopes kept teching fast, and once they upgraded Maces and Trebs to Cannons and Grenadiers, it was a walk-over. Cronus tried to counter, but naturally stood no chance (although he did temporarily regain one city).
Anyway, back to my plan. We were WAY behind in pop, so had to get to Communism and then Biology. Thankfully I ended up with the free GSpy, and could then launch a GA and change some civics. Not a ton of workshops, but I did build watermills on a large number of icy riversides. Hey, it's better than nothing, and every pop counts. The greatly reduced maintenance costs was wonderful, and the increased hammers too, plus the extra

from Free Religion. I also went Free Speech, since we had some 30-odd cities with almost as many towns (39 towns at the end of the game). Had to go to Physics before Biology because I was worried about losing it otherwise. Arges-Brontes were teching very fast indeed. It helped that I got some GS for bulbing purposes. Put three or four GS into some of SciMethod, Physics and Electricity, going there via Astro and (for now) ignoring Feudalism-Guilds-Gunpowder-Chemistry. Also settled a bunch more cities, including (eventually) a triple fish close to Arges. I assume these were pre-placed, because the single-tile island had 2 barb warriors guarding it. Good thing I happened to bring a HA on the galleon, because it would have been pretty annoying to get there after some 15 turns of travel and not be able to settle it, despite getting there before Arges.
Slowly but surely we gained pop percentage on the Arges team, despite them taking a handful or so cities in the ice. I was glad they never went for Biology, and we kept that to ourselves. Seemed like he went for military techs instead, like Steel, Railroads and he was a hair away from Infantry too. While trying to get GSes for bulbing purposes, I was very lucky indeed, and got a 16% Great Engineer. Otherwise the UN would have been postponed a great many turns I fear, though an alternative was to trade up to Democracy, go US, save money, and buy the thing. Kept checking the diplo thing with Hera, being worried about not being able to gift away the city that seemed able to build the 300-ish hammers I needed in decent time. Hades was an alternative, but I didn't know that at the time, nor whether the mapmaker had been extra evil and had Arges with +200 diplo with him or something like that.
Have never gifted away the UN before, so I wasn't sure how this exploit worked. The vote came up immediately, but since we had most pop at this point, about 49% to Cyclopes 44%, we still became secretary general. Next turn I gifted it away. Totally slipped my mind that Hera would take a crapton of tiles from us. Had such a nice Moai city on that peninsula, which was still growing at size 20 (albeit more slowly now). Suddenly it lost all food, half its tiles and was starving down fast. Once the foodbin was empty, I hired every single citizen as an artist, but it was slow going to regain tiles. Maybe another 10 turns would have done it.
Other than that, the trick seemed to work well. The vote came up some turns later, and we had Arges on our side: