Setting » Shadow Earth
This is not an Earth-centric game. Flora has left the horrible little place behind, and were it not for some fondness and familiarity on Corwin's part, it would have already faded into oblivion.
Now, Earth is part of Corwin's story, certainly, and it's familiar to us all, so it's only natural to turn to it for inspiration, and that's fine. But once you've found an idea you want to run with, there's no reason you can't make it yours rather than just bask in Corwin's reflected glory. The game setting is quite broad, and almost any idea from Earth can be drawn from elsewhere, and we encourage players to do so.
If you've got some idea you feel absolutely must come from earth, feel free to speak to the staff about it, but expect that we may suggest alternative options.