ok, so this will be a map with a northern mythology theme. Thats fine, as it is not a mythology we are well versed, we southrons
It surely asks for more scripting options, you do have something in mind about what you would need the most (I emailed you about what I think would be needed).
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Currently playing: Dominions III, Civilization IV, Ageod American Civil War.
My response to your question, Pocus, is that I will choose a nation I liked in Dom I and play around with it's various themes enough to sate my curiousity and decide on one, and then play a full game with that themed nation to experience the differences in gameplay and interface. Then rinse, repeat with a different nation.