Glad to see interest already coming in!

@Aegon: I've got a few ideas already. The habitable planet is intended to be earth-like, so it'll have one moon. At least one planet between it and the sun. I'm considering a semi-habitable planet further out, with a breathable atmosphere but little liquid water or life. I definitely want an asteroid belt as well. Beyond that I have yet to think it out too much.

@Shoopthewoop: I'd like if all starting players could be human, but I'll think more on this. One way to get to deal with natives a lot would to have your people peaceably settle alongside them.