I finally won my major gauntlet with Hatty in 1819AD.
It appears all my mapfinding, civ-picking, and overall game customizing was for naught. This Hatty game was the second game I tried, and I went back to it just now when I got tired of attempting cultural games from scratch(gandhi, cathy, louis x6, izzy, mansa). So I went back to what was at that point my most successful game, I was at 1600AD and already had 9 cathedrals and was at 100% culture.
I only managed 4 GAs, I am not very good at creating GP farms, apparently, because this game could have ended much faster if I had more GAs. My Legendary cities were my capital and my 3rd and 6th cities. They were at 650-600-700 cpt at the end, but went legendary in reverse order of cpt(600-650-700) thanks to me using my only two stored GAs near the end in my last two cities.
It was a very peaceful game for the most part despite my being located next to Brennus....until the last 50 turns, that is. At that point I've got a few rifles(thanks Vicky for gifting me rifling, then giving me rifles in the cities I flipped!), mostly longbows and maces, and every Vicky, both Americans, both Germans, and Gandhi all have SAM Infantry and Artillery...and Washington declares war on Brennus. Soon, Gandhi, Roosevelt, and Vicky chime in, so I feel safe enough to agree to stop trading with Brennus. I've got a DP with Mansa for protection. After Brennus loses 4 cities to Washington and 1 to Gandhi, Bismark acts like an idiot and accepts Brennus as a vassal outside of war, causing Gandhi, Roosevelt(vassal of Washington), and Washington to declare war on Bismark as well. He took a beating, and after losing 4 20+ size cities to Gandhi, Washington, and Roosevelt(who during this war leaves Washington and joins Gandhi), lost Brennus as a vassal, who then vassalized himself to Washington. Finally, Bismark vassalizes to Gandhi, giving me a bloc of Gandhi/Bismark/Roosevelt and Washington/Brennus to my East, Vicky to my north, and Frederick and Mansa to my West...they were never a factor in the game at all....except for the most crucial part of my game, at the end. With 12 turns left until my last city goes Legendary, Mansa cancels our DP...so I sign one with Gandhi. I figured, I'm last in power, everyone except me and Brennus have Mech Inf., and Gandhi is #1 in score and power, so I figure I'm safe there.
ERRRR...WRONG ANSWER!
3 turns after signing the DP, Washington declares war on Gandhi, causing me to declare war on Washington and Brennus...and me being so far behind in tech and with little cash, can't convince my friend Vicky to close her borders to Washington. So with 8 turns left of the game, I find Navy Seals, Artillery, and Tanks invading me from the north...I lost two cities to American Raiding parties, and killed a single Artillery. Brennus sent a single pillaging infantry into my lands...and Washington had a tank and Seal 2 spaces away from Heliopolis(already legendary). Thebes goes legendary. I'm pretty sure if a legendary city gets razed, I don't get to count it toward my 3 legendary cities...So I'm hoping...I sacrifice a leftover missionary to draw them away...I sacrifice a worker the next turn...and finally washington is willing to talk peace!!...but he wants Elephantine...my last legendary city. Not a chance! I see that he's willing to take Canterbury...I click, hope that he's willing to make peace for that alone, and he accepts!
Three turns later, I win a cultural victory! I built 7 or 8 cities, flipped 5 English cities. I flipped a Celtic city the same turn I won the cultural victory lol. Not a great time, perhaps I'll make it better during the next major, I just hope it isn't a cultural victory again, because I'm tired of them lol