Mighty Empires was developed in 1990 by Games Workshop and served two main purposes: it could function as a template for a full continent-wide campaign setting for Warhammer Fantasy Battle, or it could be a self-contained board game. But perhaps it may be best described as an entirely new game system. It featured rules for everything from building a calendar to mark the changing of the seasons when your wizards could cast spells, to maintaining supply lines in order to keep your armies from starving in the winter.
It was ambitious in a way you rarely see outside of companies like Avalon Hill but thankfully didn’t go so far as Campaign for North Africa.
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The point here is to really highlight the depth of Mighty Empires. It wasn’t “just” a Warhammer wargame. It was a full imperial countrywide theater of war, with all the charts that come along with that.