What are the hidden civilizations?

[Chib]

Ok... There may not BE hidden civilizations, but I don't see what else can explain this:

When creating a game you can choose 1 of 19 civilizations, but you can add in a total of 22 civilizations to the game (21 AI civilizations + you). Are those 3 extra civilizations just duplicates?? That doesn't seem to make sense...

I'm currently playing in a 22 civ game but have only met civs and they're all known ones...

Anyone worked out what this is all about yet?

 

[Skwink]

On cIV you can have lets say two Romes, but they would be on a team.

 

[warpstorm]

They are duplicates of the other 18 in the game.

 

[Chib]

With the exact same names?