Looping World Composition?

As asked here, I’m interested in creating a looping world, i.e. if the player goes north on the top-most level he ends up at the bottom of the bottom-most one. Is something like this possible with the “default” world builder?

Best regards,
Damir H.

First thing that pops into mind is using streaming levels? Dont know how streaming levels react to infinite loops…

They don’t automatically, that’s why I need to do a custom solution.