Minetest has several mapgenerators, but they only take the random seed as a parameter.
I would like to have a smaller world (say 1000x500x1000), surrounded by air, ocean,
high mountains, a lava-moat, or maybe a fence :)
But there is no dialog to specify such things.
There is a mod WorldEdge, but that just restricts movement to a part of the map.
Also, how could the user tweak other parameters for the generator (without compiling),
or do changes after the generator has run (e.g. change the sea-level)?