This was a super cool concept. I'd thought about trying to do something similar with like a site investigation, but couldn't come close on programming or on assets. I like how you simplified the interface to its most basic core, then tied it back to real-life civilizations. Very neat!
Also I was able to recreate Meapers' bug. When one game ended and the next began (I think I was starting my 4th runthrough), if I clicked quickly, it froze.