I've played my shadow game to 1885 so far, working on building up enough military to attack the strongest remaining ai and invade his continent. I finished the entire tech tree in 1880, having led the world in tech the entire game because of using too many commerce cities early and having TGL. Let the rushbuying begin.
Other than TGL, i've built 3 wonders. I was able to power out the clossolus early game shortly after tgl. Late game I built Cristo and the dam. Used 1 GE on each or the ai probably would have beaten me since one of them got the techs at about the same time as me. I wanted the pentagon so i could pump out level 3 units everywhere with theo + vasslage, but with no eng it wasn't to be. I could have gotten the dam easy, i was first to plastics by ~15 turns, but i needed only 7 more turns to get computers, and i wanted to build the internet in my best production city. None of the other good spots were riverside.
Mad has had a larger/better military for all his conquests so far, but i didn't keep a log to compare dates for my attacks. Because i had TGL and Col, i knew even crap cities would be profitable, so I choose to cram cities in everywhere i could. Only problem is that ment they were all basically commerce cities given the land and that half the tiles they worked or more were coast. My capital was my only strong early production city, then eventually Gilgamesh's and Statlin's. Saladin's capital made an awesome gp farm with 2 seafood and 2 irrigated corn. Because i worker stole from saladin, he didn't found Judaism in my game. In fact noone had a religion at all for a very long time. Eventually i decided to make a run at theo, and lost it by 2 or 3 turns. After considering the situation i realized my continent likely wouldn't have a religion at all if noone founded islam here, and did it myself. Then it took me forever to get a gp

I think i got 2 scientists, a merchant and an eng first. I couldn't get the gp chance over 25% or so b/c i could only run one priest until i got music.
In hindsight,I think i should have farmed the fp rather than cottaging them, and then had 2 decent production cities from all the hills in that area.
Post optics, i just threw up my hands and said forget diplo, no way i can keep even half of 40 people happy. I opened borders with everyone I could as soon as i could trying to max out trade routes. Ended up with -4 you have traded with our worst enemies with most of the world, but enough positive modifiers till most people were cautious or pleased for a long time. Now that i've been warmongering a bit and refusing demands left and right, world diplo is solidly bad with most ai's annoyed/furious. Initially i gave in to several demands to give techs, but refused all to stop trading and most of the join in war requests. Fought a few fake wars b/c of diplo. Now that i'm well established i've been refusing everything except requests for crap techs from backwards ai's i don't care about. More laziness than strategy there. I've been checking every few turns to see if i can sell worthless techs to backwards ai as well. Most of the world fears my power too much to attack me. I think the power leader is gearing up to attack me, he has enough on his hands, isn't in a war and hates me. But that's ok because i've got enough on my hands rush-buying mech inf and modern armor to use on him in a few turns. So far i haven't been invaded by anyone. The french did land a moderate force when i invaded them, but it was easily crushed.
I've learned a lot from this romp. I think i should have gone for more early production and made better use of the numadians. This has also been the first game I've extensively utilized drafting. I guess having too many low production cities does lend itself well to that. My initial overseas invasions were based entirely on drafted rifles/upgraded troops, then later drafted infantry and upgraded veterans. I was surprised just how amazing drafted rifles are. Felt like cheating it was so efficient.
I can't see how I could lose this game. Even if i got dogpiled by everyone i could probably still win at this point. Currently i control 2 hemispheres completely and I'm about to invade a third. I'm a little nervous about being repulsed there, it will be my first invasion of a decently strong ai with full railroads.
Silly trivia from my game - jc of rome was first to astro and had it before i met him, but i got the circumnavigation bonus with caravels before him. navII caravels 4tw.
I've built exactly 1 worker the entire game. I've captured so many they've been idling at various points with nothing to do, not even tundra in the middle of nowhere to road/fort over.