How can i add Illirians?

[Byzantine Prince]

Hey guys, I was wondering how is it possible to add an extra faction like let's say the Illirians into the mix? What do i have to do?

[anti_strunt]

No can do, you'll have to replace an existing faction to add a new one, which is a shame...

[Byzantine Prince]

Ok well i can get rid of those crappy scythians. I still need to know how it's done though.