This challenge was such a great exercise in semiotics and creativity, congrats for the choice of the theme. I enjoyed the diversity of the entries, their originality, and artistic presentations. Although this forum is dedicated to visual arts, I have to say that I like the variety of media used for this subject (narratives, audio files, traditional wood carving).
I still don't have much rep to share, but here are some maps that made an impression on me:
Rudimentary Raiding Map – simple yet effective idea, smooth technical execution, refined aesthetics;
The Lost Coast – inventive in the aspect of map reading, but the quality of the photos doesn't promote the artwork;
The Sahuagin point of view – this one made me seasick, very expressive and alien.