Civ Unique Ability: The "Hellenistic Fusion" ability gives Macedon Tech or Civic Eurekas depending on what Districts are present in a captured city.
Leader Unique Ability: Alexander's "To World's End" ability lets Macedon stay at war longer by greatly reducing war weariness. He also gives Macedon the Hetairoi: a fast Heavy Cavalry unit that starts with a free promotion, which replaces the Horseman.
Unique Unit: The Hypaspist replaces the Swordsman, gets extra bonuses from supporting units, and is stronger at besieging Districts.
Unique Building: The Basilikoi Paides can be built in any Encampment that doesn't have a stable. It provides bonuses for all melee, ranged land, and Hetairoi trained in the city. It also provides some science anytime a non-civilian unit is created in the city.