I thought the way they set up the world was really interesting. I'd think/hope that something like this would be in the real of possibility for Minetest, though I wonder if too user intensive. It reminds me a bit of the way the Voxus game looked. I love how the water goes down from the source as well. I think it is useful to look at for inspiration so that is why I'm posting it :)
Webpage:
http://www.strangeloopgames.com/eco/
Video:
https://www.facebook.com/EcoVideoGame/v ... 099829291/
Two more vids:
https://www.youtube.com/watch?v=SotLmyFf3As
https://www.youtube.com/watch?v=EzGpWWX0rXU