My favourite factions are by far Casse/Aedui/Arverni (no specific order). My reasons for this are:

- The celtic hero system is highly appealing to me - so much that the Celtic units have actually become true heroes in my eyes. Stats be damned, I prefer them over anything else.

- If I'm playing as either the Aedui or the Arverni, the starting civil war is of course fun. Played "right" without blitzing and good role-playing, it's a great, great start.

- If it's Aedui/Arverni I'm playing as, an early clash with Rome is always good. I like them Cohort Kebabs.

- The Casse have an interesting starting position

- I like the Casse generals, and especially the kluddobro unit

- When playing as the Arverni, your faction leader is not just a king... he's a GOD!

- They're just Celtic, all right?!

- Gaesatae and Uirodusios...