Go to the home page, gog.com, and scroll about half way down to see the banner for a free copy of "Age of Wonders"

Link to gog.com -> http://www.gog.com

Here is a link to the games page on gog.com -> http://www.gog.com/game/age_of_wonders

Description from page:
About: Welcome to Age of Wonders, the authentic turn-based fantasy strategy classic that started the hit series. Age of Wonders’ intimate atmosphere with painterly graphics still shines today. The game’s fully patched up, start building your fantasy empire today!