If you open the Civ4CiviliationInfos.xml file and edit the "bAIPlayable" and "bPlayable" settings to 1 instead of zero the Barbarians become playable as a civilization.
When you choose the barbarians as a civ in the menu, you will be able to choose two skill levels. Minors or barbarians.
Minors are a a minor civilization which can found cities and so forthe just as any other civ could. They play as the Native American indians with Sid Meier as the head barbarian {not kidding}. Each city they found becomes an indian tribe {the cherokee, navajo, olmec, apache etc...}
When you choose the Barbarian Skill setting you play as the actual barbarians you normally see attacking everyone. You cannot found cities and just basically wander around the map trying to attack someone.
Huge thanks to Rayanth for the editing tip
When you choose the barbarians as a civ in the menu, you will be able to choose two skill levels. Minors or barbarians.
Minors are a a minor civilization which can found cities and so forthe just as any other civ could. They play as the Native American indians with Sid Meier as the head barbarian {not kidding}. Each city they found becomes an indian tribe {the cherokee, navajo, olmec, apache etc...}
When you choose the Barbarian Skill setting you play as the actual barbarians you normally see attacking everyone. You cannot found cities and just basically wander around the map trying to attack someone.
Huge thanks to Rayanth for the editing tip