This expansion for Eminent Domain, which cannot be played without the base game, puts the following new tools at the Emperor's disposal:
New meaning to the larger-sized ships in Eminent Domain.
Additional Role cards to support a fifth player.
Additional technologies, each with an alternate cost in addition to their normal Research cost.
A new category of technology ("Diverse"), requiring one planet of each type to research.
Optional scenarios for asymmetric starting positions and technologies for each player.