I just received an email from [email protected] because I've purchased and registered Demigod.  The email includes 2 coupon codes for your friends, etc to pick up Demigod at $19.95.  Here's the body of the email:

The All Father has vanished, creating an opening in the pantheon. To fill the void, Demigods from across the mortal world must wage war against one another in a bid to ascend to true godhood....but you already knew that.

As a Demigod customer, you have already been playing this action packed team-based strategy game. Because Stardock knows that playing online with your friends can be much more enjoyable, we're giving you two coupon codes exclusively for your friends to buy the digital download of Demigod for only $19.95.

Whether your playing as teammates, or as mortal enemies, nothing beats playing your friends online.  Forward the coupon codes below to your favorite buds and start playing today!

Here's the fine print:

This offer is valid for a limited time only and can not be used with any other promotion.
Expires: November 01, 2009.