Ok, so I have an idea, but first let me say this; if this is the wrong place to post this, I apologize. This is my first time creating a topic so please be patient if I'm doing this wrong or being a noob. I didn't know if I would have as good of luck getting answers if I put this in the Survival/Castle building challenge thread.
So, I was wondering if anybody had any fairly good looking snow biome seeds with some decent snow covered hills or (preferably) mountains. My idea for this challenge is to do the challenge is to create the castle/fortress in a snow biome, and once I reach either the stone or the iron age (not sure which; open to suggestions), I choose a valley near enough to my base that monsters there will quite often wander to my base, and use a mod to spawn a fairly decent amount of monster spawners there. That would force me to build a giant wall spanning between those two hills and probably further, Game of Thrones Knight's Watch style. That's right. I want to do a Knight's Watch themed castle building challenge, Wall included. So.... I gotta find a seed, first..
Or, (and this is definitely going to be in the wrong area, but because it's an addendum to my main point I'm not too worried about it) does anyone have an easyish way to change an area to a snow biome as an alternative method? Because if so I already have the perfect seed.
Those are some ice plains/mountains seeds I have looked at briefly. The last one you need to travel north from spawn to get to the snow.
As for changing the biome of an area, each chunk has a "biome type" indicator so something like world edit might be able to do that that for you. I have never tried. It might be an FAQ in the custom maps forum?