worldedge
A Minetest Mod that teleports you to the other side of the map when you reach its edge. This gives the illusion that that world is round and you can walk all the way around.
You can change the worlds edge by changing the first variable in init.lua local edge = 30000
License of code: DWYWPL
Written by Amaz Modified by Don
Not for flat-Earthers
It is a bit rough when you get teleported, but this mod can be effectively limit the size of your world and give you a planet-like experience.