thanks, the game on autosave did indeed fix the problem and i had a great time playing through prehistoric age and Iam now in ancient age researching mining.
settings were snail speed emperor difficulty (later changed to deity in the bug options), playing as russia.
now, this was my first C2C game, so I a prolly gonna sound stupid, but is it normal to be in ancient age and sitting on 20000 gold? the game seems incredibly easy not just due to easy economy but also easy conquests one can do. like I had 7 generals pop out just from killing barbarian animals and nothing could stop a player killing every mainland civilization while still in prehistoric age if he just made a force of say 3 troops led by warlords and a great commandor he would have a 100% chance attacking any city.
also, I dont see any espionage points, is that intended?
one thing I'd like to propose is somehow please make the AI more prone to expand. I hated ROM because I always found myself adding cities to civs that dont expand. in my game I had to add cities to germany, goths, romans and france because they had 1-2 cities when I had 8. one possible fix to this could be making barbarians make cities like 200 turns later than they do now so that the AI civs dont give up on expanding just because barbs make cities around them.
also, not sure if intended, but Byzantines and Israel were wiped out quiete early in prehistoric age by huns and egyptians.
and last thing, seeing as this game is all about expanding, I think Russia's starting city of moscow could be nerfed by removing stone (it seems to be best resource in game)