Yudishtira
Spiritual/Creative
Thanks for that.Here is the save I was talking about.
But I'm afraid it confirms that you have known about that one civ's huge power lead for quite some time. I don't know why they are the only ones who have built up like that, but I'm going to assume for now it was through a "human-player-style" snowball.
If you want to continue this game, or want to experiment as to whether to persist at Monarch, you would need to go back a hundred turns or more, preferably to where you first learned of their power lead, and see if it's at all possible to spam 50-60 (tech-superior) units which should be enough to counter them.
(Well training the units looks easy, but maybe upkeep on them is the hard part.)