Talk:Carpe Diem: Map Game/@comment-28816571-20190715233259/@comment-31782481-20190716001215

The English vernacular can change quite a lot in the span of 120 years, and "Earthling" is quite reminiscent of highly exaggerated 60's sci-fi movies. "Terran" and "Gaian" simply sound too alien, and also are examples of other overused sci-fi tropes.

"Earthian" is not a silly demonym, or if it is, it is certainly less silly than any of the other alternatives you provided.