Fun but some concerns
A fairly fun game and I must admit that I do really enjoy games like these; where you build up your civilization and defend or attack others, however I'm a little concerned with this game as with any games or movies that depict my culture.
The gameplay is fun and entertaining and the artwork is amazing and overall it's pretty fun and challenging to play, but there are something that are a disturbing. Most of the generic stereotypes I can tolerate (noble savage out to save his lands, etc.), but one of the most disturbing things that I saw was how you depicting a medicine man as some supernatural 'wizard' using his powers to attack the enemy. I can't even begin to describe how wrong and insulting that imagery is.
What I'm trying to say is that next time try and be a little more considerate if you are going to depict someone else's race. Overall the game is well done, enjoyable, and fairly challenging all things considered. :P