It's a game where you are a "God" and have to build up villages and spread your influence. To help you, you get a Creature that you have to train and feed and show how to perform "Miracles" (rain, creating food and wood for the villagers).
Anyway, the whole point was that you could either be good and merciful (helping your followers, playing with your Creature) or ruthless and bloodthirsty (Burning down villages, slapping around your Creature so he becomes angry and crushes villages for you.
I know all this because I paid $20 for it a year ago, and I really haven't played it much because it's so damn BORING.