Stardock announced today that the award-winning 4X turn-based strategy title Galactic Civilizations I: Ultimate Edition has made its way to Steam (http://store.steampowered.com/app/214150/) for just $9.99.

In Galactic Civilizations, the year is 2178 and the Terran Alliance has invented a new technology - Hyperdrive. However, the secret has leaked to other civilizations, starting a race for all of the inhabitable worlds in the galaxy. As leader of the United Earth, you must research new technologies, build an economy, and create a powerful military force all while carefully balancing your political, diplomatic and trade skills.

The expansion, The Altarian Prophecy, expands the gameplay of Galactic Civilizations I to include a campaign that will take the player on a multi-game journey to solve the mystery of the eerily similar Altarian Republic. In doing so, two new civilizations - The Dominion of the Korx and the Drath - will be discovered. These two civilizations hold the secret to Altaria's history, but worse still, they know the Prophecy that tells of the destruction of the galaxy that is connected to Altaria's past. Also included with The Altarian Prophecy is a map editor, scenario editor, campaign editor, four new star ships, custom scenarios, and much more.