gog.com (Good Old Games) is currently giving out free empire earth for everyone between 12 DEC 2011 and 14 DEC 2011. Everyone can make an account of gog.com and add empire earth gold edition without paying a single buck for other purchases.
gog.com has been selling renowned old games in their original form and removing all DRM measures in them with a price of either 5.99 USD or 9.99 USD. Therefore, it is a very good place for people who want to get old games like Stronghold Crusaders, Starflight(DOS), Waxworks(DOS) and Rollercoaster Tycoon 1 but weary of their DRM measures.
gog.com: http://gog.com