Huh. I have a crazy suggestion. Zombie Fortress! You play as zombies, trying to build their own city. They don't breed, but multiply by transforming invaders into their kind.
Is it possible?
Interesting idea, I'll keep that in mind, I was kinda wanting to add a darker themed race sometime. Anyways, let me tell you these Elemental men are OP(over powered) as hell. lol, Fire men(Throw fireballs), magma men, mud men, and iron men.(Despite that they're full metal, they aren't alchemists sorry.)
There is 2 drawbacks really, I think the firemen can cause the mudmen to evaporate, and only Iron men and magma men have equips. With the elemental race you're going to really have to watch what you build with, seeing as Magma men are...magma, and firemen are obviously fire.
Edit: Oh whoops, excuse the double post! :/
Edit2: Forgot to mention none of these elemental castes: Eat, Drink, Sleep, Feel Pain, Breath, Become Stunned, Get Nauseous, Have Thoughts, Have Emotions, Can't Become Tired or Overexerted, and they all have Extra Vision. But this is a default rip straight from the creature_subterranean.txt. I need to remove some of them lol because right now they're just beasts. Just a few of them could wipe out a full dwarf fortress, much less a full fortress of a hundred or so of these guys. If anyone has any ideas on what to leave and what to take out lemme know, otherwise I'll just take out what I feel necessary lol