The Settlers IV: The Trojans and the Elixir of Power is an official expansion for The Settlers IV. It continues the story of the original game. The leader of the Dark Tribe, Morbus, has learned from his failures so far, gained new technology and flying machines, and now wants to fight the remaining nations again. This time around, not only the Romans, Vikings and Mayans are around, there’s the new nation: the Trojans. The add-on introduces some new units, for example: flying machines (Manacopters) and Catapultier (special unit). There are new missions for all of the nations, including the Trojans, and a settler campaign.