How do I unlock more factions for Imperial Campaign mode?

The following factions can be unlocked for Imperial Campaign mode:

• Egypt
  
• The Seleucid Empire
  
• Carthage
  
• Parthia
  
• Gaul
  
• Germania
  
• Britannia
  
• The Greek Cities
  
• Macedonians
• People of Pontus
• Armenians
• Dacians
• Numidians
• Scythians
• Spanish
• Thracians

These factions unlock as you complete campaigns. Alternatively, you can unlock all factions immediately by following the steps below:

1. From the Main Menu, select Options. The Options screen will appear.
2. Select Show More Options. The Options overlay will appear.
3. Select Unlock All Factions.
4. Select Close. All campaign factions will now be unlocked when starting a new Imperial Campaign.

Please note: The Senate of Rome is not a playable faction in Imperial Campaign mode. This faction is only playable in Custom Battle mode.