Age insane spending of natural resources led to the total depletion of the Earth's ecosystem.
United Earth government organized evacuation from dying planet, but only a small part of the "elite", leaving the poorest people die.
Centuries later, the "chosen" have decided to take back, under the control of the Earth. But now he is opposed to the 7th Legion
1. You need to download and install Steam http://steampowered.com/download/SteamInstall.msi
2. Go to your account or register a new one.
3. Go to the "My Games" and select "Activate via Steam ...", and enter the key received after payment.
4. Once activated, the game will appear in the game list (Library) and you can download it