Procedural terrain generation in the Fortnite LEGO mode

So, I just played this new mode, which is pretty fun btw, and noticed that you can use a seed for the map in the “new game” menu, so I assume the map/terrain is actually procedurally generated. Any idea on how it was done? Because, unfortunately, there’s not a lot of content around this for Unreal Engine, so any information about it would be useful.

It’ll be cool if Epics make horses and new generation with really interesting things on map!