Quote Originally Posted by Teah_Kaye View Post
I'd argue that everything but mundanity is possible. Regardless of whether it's Ancients or lightning shard folk or just some Turali people who built a crazy cyberpunk city. It's not mundane by any stretch of the imagination.
There are degrees of mundanity. "Built by people in this world utilising an unusual natural resource" is more mundane than "spacetime manipulation".