it woule really add a lot or fun,replayability,new strategies...be allied and betray someone..lot of thing,lot of fun,and i think is not so hard to add that thing.i think that is in the mod tales of auriga i have read..but i want it in the official game.

Signed. Would like allied victory to be included.

I'll second this, my friends and I would definitely like an Allied victory condition. We can do silly stuff like trade Era VI techs so we achieve simultaneous Scientific Victory or whatever but it's very forced. Even if we can't start on the same team from turn 0, we'd like to be able to win together.