Bay 12 Games Forum

Found these (and many similar) embarks recently, while looking for something completely unrelated.

There's... some potential here, I can feel it.  I mean.. it's a gravity fed refilling magma chamber..  It's the opposite problem that you typically have, where you have to pump it up, normally.
I'm stuck trying to decide what project or megaproject to attempt.
Just to have the option of building a magma aqueduct, in open air, or to use it to melt and heat entire arbitrary underground spaces, all without a single pump..   

Not sure if it helps or hinders, but the "No Trade" status can be replicated with extreme temperatures in either direction.  If it's too hot or too cold (for either insects or wandering wild animals, I can't recall which) then you'll see that "No Trade" status for neighbor civs. (-1000 or +1000 will do it, quick-n-dirty)
Having just typed that, I think sometimes.. it doesn't actually stop them?  At least under some conditions, I've had caravans show up, after the No Trade status, and instantly die due to melting or frostbite damage.
I'm sure you're capable of testing it yourselves, but if you want some help nailing down some of the temperature related realities, let me know.

Ok, this one should work for you , Asi Kom..
no water in the caverns, but cavern trees/plants
partial aquifer, easy to bypass if you stick to the mountain biome for mining.
sun berries on the surface
both biomes are serene, half temperate shrubland
steel friendly (flux, iron, coal), sand, clay, candy, 10z from embark to magma
at war with goblins
humans nearby
You can expand or move the embark east if you want surface water (a brook)
Verified Unicorn spawning in either location

Here's one that should work, Akoto.  If you embark on that cavern in the NW corner of the region, it's steel friendly, and has only a partial aquifer.
There are at least one of each civ (dwarf, elf, human, goblin), plus a tower, within range.

Sand deserts (ideally) require 0 rain and 0 drainage.
Broadleaf forests (ideally) require 100 rain and 100 drainage.
They are adjacent in drainage (32 can make a desert, 33 can make a forest) but they don't overlap in rain. (9 max vs. 75 min)

So, yes, you can influence worlds to get more of these extremes, but without using pre-set values to ensure it exactly, getting them adjacent, if that's your goal, will be largely a matter of chance.
Do you want a particular kind of forest next to a sand desert, is that the desired embark?

Ok, good stuff, greenskye. 
What size embark are you willing to accept? 2x2, 3x3, 4x4, 5x5 ? or would you prefer the smallest, or you don't care?
Is coal/lignite a requirement, or just flux, iron, sand, for resources?
With respect to the waterfall, if a smaller river at the 'top' of the embark produced a waterfall that flowed into the larger river at the 'bottom' of the embark, would that be fine?  If not, describe your ideal.

As far as savagery/good/evil, no undead is easy, so no problem there.  The ground can be 100% evil without evil clouds, or undead husks, or blood rain, it just means certain plants and trees will grow there that wouldn't otherwise (like glumprong trees in evil, or feather trees in good).  Certain animals, in particular Giant animals will show up in Untamed wild biomes of very high savagery.  If you combine good with savage, for example, you can get Giant Unicorns, rather than just Unicorns.
But for most people, savagery doesn't matter if they don't want Giant animals or animal-men.  Evil/Good doesn't matter if you don't want the things that are unique to them.

...
Is it still possible to find/generate this world in 44.12? I can't seem to get it to work. Alternatively does anyone else have a map with a similar set of features?

This post contains the source of this file:
Which, if you save/open it in your browser, will let you select all the features that you would like to see, and add your own, too, if you wish.
You can just select what you want, click the button at the bottom, and copy/paste the results into a reply/post.  It's not explicitly clear what you're looking for in an embark, is why I bring this up.
Once you have a list, we can iterate.

I haven't played in a long long time. Can someone refresh me how to make a world with a lot of savannah, savage preferably?

This should get you started, Milkbot: