Started a new Earth game as Rome. Did some scouting, reloaded. Changed my production for Rome to maximize science (needed to get pottery asap) and then went to make my second city in the west.
Selected no the first time, then hit yes. I had already sold my palace so the city should've came with another one to sell, but instead of a Palace I saw a bunch of gibberish in production with 999 days to complete.
I selected production there was nothing there and then my city instantly had every world wonder in the game. So I said okay, lets just roll with that and see what happens.
So I end turn and it says the population of Ephesos is over 100,000!
A military I had that was moving north turned into a weird black and red color and the new city I had just made vanished.
Then the game went black and froze up.