Willow Wenial wrote:
I believe this is the right place for this, since it has to do with physical atoms, landmasses, etc...
Do any of you have different natural laws in your worlds?  For example, in our world we have gravity, the laws of thermodynamics, etc...
In your fantasy worlds do you ever mix those up a bit?  Perhaps energy CAN be destroyed?  Creating an apocalyptic end of all we now know?  LOL!
In one of my worlds, gravity can be circumvented and there is an actual race of people who are just not affected by it.  Which causes some problems when they try to interact with those who are.

In my world, there is a portal system, and if you step through it incorrectly, then it actually replicates your matter in six different places. (And kills you.)
Eventually, somewhere forces a huge mass through the portal. That replicates the mass, which upsets the matter/energy balance and triggers the end of the world in a cataclysmic reverse heat death.
The only thing that I'm really going to toy with is the existence of an "exotic matter" which they use, at first, to manipulate what they believe to be magic (and it partly is cobha) and later to weave wormholes and manipulate space and time.