Picture this: Its 1869AD and Im very close to finishing my final spaceship parts. Carefully timed so theyll finish around the same time. Theres a vague puzzlement at the back of my mind that I seem to be one SS part short, but I probably missed a town building it when I was scanning my towns.
In 1870AD I find out why. I complete researching genetics, the very last technology on the tree. Why is it the last tech I researched? Why did I leave it till after mass media and composites? Because of course I forgot that you need it to build the SS stasis chamber. Bugger! That one single mistake mustve added 8-10 turns to my victory date

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But lets go back a bit and examine the situation in the 1600s and the lessons I learned about late game strategy over the following century.
1664AD. Heres my map.
I have fertile coastal lands stretching up to Cathage in the North. Saladin has lots of territory north of there, thanks to my earlier decision to bribe him into war on America (I hoped hed raze the cities and clear out the land for me. He didnt, he kept them before vassaling America. Selfish git.). Im earning 1100gpt, and Im 6 turns from industrialisation and tanks. I dont think thats bad going for science so far.
But 10-20 turns previously, I realized a problem. A quick count of the tech chart showed that at current research rates itll be about 130 turns till I have all the techs to build a spaceship, whichll take me to about 1880AD. I want a victory earlier than that. But my cities are starting to hit their happiness cap, just about everything that can grow to a town is already a town, and most cities already have libraries, observatories etc. So if I carry on playing peacefully, there doesnt look much I can do to speed things up. I guess the concern I had in my first spoiler about too many sea tiles is proving well founded.
I need to get bigger, but the situation isnt good for that. I can easily remove America from the continent, which will give me furs and one new science city, but hes vassaled to my close ally Saladin (pleased/friendly, even recently asked me for a defensive pact), and Saladins military is *massive* (although Im way ahead in tech: I have artillery and infantry, he has riflemen and cannon). Saladin has some great science cities in the West, but Id have to raze a *lot* of useless desert cities on the way to get to them, so it wouldnt be a quick war. Not only that but Hannibal is also vassaled to Saladin. I dont care about him, he has two cities on a faraway island, but previous wars with him will give me more war weariness. . Its risky, it might speed up my victory, it might well slow it down, but I dont like the look of my likely victory date if I dont do it so
..
First mistake. I reason that since nothing more needs to grow to a town, whats the point running emancipation. I may as well use slavery to get myself some more units quickly. What I didnt realize was that this late in the game, not running emancipation doesnt give you 1-2 we demand emancipation unhappy faces per city. No, it gives you 6-8. And starving cities everywhere even
after the poprushing. 5 turns later Im rather smaller and running emancipation again

And at war, declared in 1679AD. And now starving coz of all the unhappy faces from my previous wars with America. So much for 6 turns to industrialization. After losing several turns to upgrade my units, I realize I need facism so I can run police state a lot more urgently than I need tanks. And all the unhappy faces means my science rate has gone into freefall. But theres no going back now, I fairly quickly remove America from the continent, by which time his loss of territory has freed him from Saladin so I can make peace with America. Then I divert some units to go and wipe out Hannibal to hopefully eliminate war weariness. It doesnt work. Some turns after Saladin has become my only opponent, I
still have 8-11 war weariness per city. What gives? I thought it was unit loss that was the main contributor, but thanks to my tech advantage Ive lost very few units to Saladin. Does razing cities add to it, I wonder? Ive razed a *lot* of Saladins cities.
The war finally ends in 1792, by which time Saladin is confined to an off-continent island. Hmmm. 48 turns of war and sacrificing my science, to get me three good commerce cities, one production city, and furs. And cultural pressure on the new commerce cities means Ill need to do something about Catherine soon too.
Well to cut the story short, I did take out Catherine in two short wars, with a gap between to allow me to build some more jails and Mount Rushmore. And the globe theatre in my main production centre.
Did the wars help? Looking at the dates and at my commerce graph at the end of the game, I suspect on balance they set my victory date back a bit, but probably not by much, and they gave me a much bigger final score.
I also suspect that if Id planned for war weariness a lot better delayed the Arabian war to get fascism and built jails first, then gone to war, that wouldve given me a far better result. Im tempted to go back to the game and play through those scenarios to see how they turn out, but Im not sure I have time and theres another GOTM round the corner
One interesting aspect of this game btw. Usually I try to build the three gorges dam and the space elevator to speed my spacerace production. This game I did neither. (I wouldve built three gorges but Id neglected to locate any high production cities on rivers, and I didnt research robotics until too late in the game for space elevator). I didnt get the impression that failing to build them had any significant impact.