Beautiful world! Unlike most I am more curious on how you created the great tile sets and how you made them all fit together. Where did you learn to do this? Is there any resources I could look up?
I made them in Blender. You can set a custom snapping distance and I just placed a reference tile next to the one I'm working on. I didn't make a lot of other stuff in Blender before that, so this was kind of a learning project for me.