This is a rather surprising development to me, I didn't imagine that this would inspire writers, but I quite applaud what Minecraft does for creativity at all ages!
I know for my own part, I can still remember part of the geography of various CIV games I played 10-15 years ago, and often elements of what played out.
It's the same with Minecraft - once you get games like this, where the spatial aspects of the game world hangs sufficiently together, we're very good at remembering it.
And what we're good at remembering, we have a better shot at describing well.
That makes it a comfortable, safe, but still exciting starting point.