Myth is a no diplomacy, CBM 1.92 game played on a custom 80 province map.
After eliminating Hinnom early on and then fighting Ulm, Yomi became the largest nation in the game. However Agartha joined the fight and the combined forces of Agartha and Ulm seemed on their way to defeating Yomi until R'lyeh's attack on Agartha gave Yomi a reprieve.
My guess is that this is not yet a last stand situation but that the odds are also not good. On the plus side, unless you manage to pull off a serious comeback this position shouldn't require too much time.
If you'd like to take a look at the most recent turn before deciding please PM me your email address and I'll send it over.