The Base Game is Free at Steam!!!!

About this DLC.
This is a restricted gift which can only be redeemed in these countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama, Bahamas, Ecuador, Colombia, Venezuela, Peru, Chile, Uruguay, Paraguay, Argentina, Bolivia, Guyana, Suriname, Brazil, Mexico.

Note: It is apparently working as ROW....good news.

You will receive the gift even if you are not from that zone.