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Galactic Civilizations is a space based strategy game in which you are in control of humanity's ...

NOTICE: Activation key must be used on a valid Steam account. Requires internet connection.

About the game

Galactic Civilizations is a space based strategy game in which you are in control of humanity's destiny.

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

Galactic Civilizations I: Ultimate Edition combines the award-winning Galactic Civilizations with the Altarian Prophecy expansion pack to create a stellar adventure.

Key Features

Replayability - Galactic Civilizations is readily playable by casual gamers and includes a powerful, sophisticated AI and game mechanics that make each gaming experience different and highly addictive.
Immersive Storyline - Playing as the leader of humanity, you have a rich and deep heritage to lead the human race and become one of the principal species of the universe.
Multiple, Balanced Paths to Victory - Achieve victory using military strength, economic might, or political power.
The Metaverse - Gamers with a Stardock account can be part of the "metaverse," where victories, defeats and campaigns can be recorded, allowing players to share their gaming experience.
A Map editor that allows players to design their own custom maps.
A scenario editor that enables players to create specific game environments.
A Campaign editor allows users to create a set of games that are linked together to tell a story.

Minimum Requirements:

Recommended Requirements:

To activate the Steam key you've received, follow the instructions below;

First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
Click on the "ADD A GAME" button in the bottom corner of the client.
Then, select "Activate a product on Steam..."
Write down or copy-paste the activation key that you've received from %s in the window.
Your game is now visible in your library! Click on your "Library".
And finally, click on the game and select "Install" to start your download.