AoE4 launched with eight core civilizations, each featuring distinct mechanics, unique units, and specialized "Landmarks" used to advance through the ages.
Mix units. Never build just one type.
Faster villager production based on the current Age. The Holy Roman Empire (HRE) Playstyle: Infantry-focused, religious-economic booming. Unique Units: Prelate, Landsknecht. index of age of empires 4