Have you played both games? I always thought that Dwellings sounds like a game I'd like, but it was oop when I first heard about it and I didn't bother looking for it on the second hand market. So when AE was announced, I was very happy, especially cause I also like space-themed games.

A guy in my group is considering getting Dwellings because he likes the fantasy theme better. Would you get it just for the different theme?