Mega Empires: The Special Buildings is an expansion set that is compatible with Mega Empires: The West (2019), Mega Empires: The East (2021) and Mega Civilization (2015). It contains a set of 18 unique miniatures of ancient buildings historically associated with each of the civilizations in the game that add depth to gameplay, along with a set of rules.

This expansion reimplements Western Empires: The Special Buildings Expansion and Eastern Empires: The Special Buildings Expansion and combines them into a single set. The product contains revised rules (also available as download) and a board for storing the buildings during play.