Pokémon - What Constitutes A Region?
This has been a question that has bothered me for years.
This is not about space, story, or gameplay mechanics, but the environment. Every generation has had the same makeup: a forest, an ocean coast, a mountain, and a metropolis, among others. Constantly seeing the same makeup has made me wonder if this is what a region has to be, or if it can be something else.
Does every region have to have a forest? Can a region not have a large river or lake instead of an ocean? Must a region have a mountain? Is this what makes a region?
Personally, I strongly feel every region should be environmentally distinct, but I'm just one person. What do you guys think? Does a region have to have certain conditions, or can it have something else?