Due to the success of the game, Digital Reality produced an add-on package, The Solon Heritage, which added a few new features, such as a proper skirmish mode, and modding tools. After the destruction of the Armada, a mysterious artifact of Solon origin was discovered, leading to technological advancements and intense military buildup. It was not that well received, however, due to the lack of a new campaign in favor of refining and rebalancing gameplay. Because of contract issues (mainly of Wanadoo being sold), The Solon Heritage was not published in the USA. However, the Solon Heritage as well as Legions of Iron can now be obtained via a digital download from various online retailers.