Had a little free time today so I thought I'd take a look at #minetest.
I've looked casually in the past but always found myself stuck in the middle of a dense forest.
I thought I'd guess a seed number and chose "42" with Mapgen v7 and I wasn't disappointed.
You get wide-open plains, hills, gorges and caves, beaches, a river, green areas with flowers and forest areas too.
As complete guess it's quite a good environment to start your Minetest journey in.