Hi,
I just started a single player game and set the winning condition at 70% cities captured. I saved the settings, then added AI and clicked launch. When the game started I went to look at the winning conditions; it states that 80% is needed to win. I checked on another single player game as well and it too has the winning condition set at 80% and I remember setting it around 60% because I am play testing a map I am working on. gameid=35314 on Randland and gameid=35605 on snowflake.
Thanks,
garvisus