Sup gais. I made my own altered 600AD scenario and started up a game of Brazil on Marathon. It said I had to wait for the AI to auto-play four hundred and something turns, so I waited. About 150-200 turns in, the end-game clock that appears when the end-date is looming came up. It reached zero in the Middle Ages and Kublai won the time victory (I looked in WB, he was a giant).
Also, the game runs incredibly laggy all of a sudden and when I load games I don't get a screen with a bar. I don't see the connection, but it started during the Brazil load... maybe going into WB did it.
EDIT: Hmm, forgot all about that stability bug... I abandoned the game a while ago though.