That's right. GOG.com is kicking off their holiday promotion by giving away the Earth. And not just any Earth, but the gold edition!
If you add Empire Earth: Gold Edition to your cart between now and 10:59 GMT on December 14, the historical RTS will be absolutely free! And being the Gold Edition, it includes the original Empire Earth and the expansion pack, The Art of Conquest.
GOG.com have also discounted practically their entire catalog at 50% off until January 2, 2012 for their incredible holiday sale. Although they would like to remind you that Activision games are only on sale until December 26.
So check out GOG.com and see if there's any classic PC games that suit your style and pick 'em up for rock bottom prices... and get Empire Earth: Gold Edition for free! Or, just pick up the free game, I suppose! Whatever!