I've been working on a little project, a monster that can quickly, and efficiently, annihilate all life in the game. It started with a thought exercise: what could be worse than fighting a bronze colossus? Well, what if, instead of it being made of bronze, it was made of something denser, stronger, harder to break? That's good so far. I made a colossus out of the densest material in the game (I won't say what it is, let's just say you'll only find it when you find the Happy Fun Stuff). So far so good, it's able to take a pounding even from other bronze colossi, and not notice unless they aim a punch or kick directly at a finger or toe. Adamantine dents, but otherwise does not hurt it. But it can only attack one enemy at a time, and only at point blank, so archers will just pepper it with arrows and run. Easily fixed, make it breathe fire, so it can take out distant targets. But what to do about melee? It can only attack one enemy at a time, and against a mob, it will take forever to kill them all. Sure, I could code an attack that would set fire to everything nearby, but why should I have to? When I can make it out of a substance that does not melt, but generates a constant, unbearable heat that can, just by being nearby, cause any living thing to start burning and die within seconds. I created a unique substance that has the same density and toughness of the previously mentioned stone, and a constant temperature of 60,000 degrees Urist. Then, I set the creature's body temp to the same. I now have a creature that possesses the strength, toughness, and tenacity of a bronze colossus, but will cause any non-fireproof creature to begin melting and burning in a few turns. Just standing next to this creature will cause anyone to begin burning in a few turns, melt in a few more, and be reduced to a cloud of smoke and a pile of non-burnable items in seconds. A bronze colossus will eventually melt during combat with this creature (and in a fist fight, will get brutalized mercilessly). Adamantine cannot break it, even in the hands of a grand master. The only possible ways of killing it are dropping it off a cliff (maybe, I haven't tested that yet), and trapping it in obsidian (maybe, I haven't tested that yet either. It's possible it may be so hot that the water would evaporate BEFORE it could hit the lava). Trapping it in magma might work, it can't swim in it, but it will never melt.
Combat against mere mortals is almost humorously horrifying. The human approaches to attack. The creature can just grab it's victim by the head with both hands. Just standing next to the creature is sufficient, but skin contact speeds up the process. In one turn, the head is burned. Smoke begins issuing from the victim. As turns pass, the burning spreads, and starting from the head down, body parts begin to melt, then bleed, slowly at first, but with increasing speed. The bleeding progresses as the burning spreads. Soon, EVERY INDIVIDUAL PART OF THE VICTIM'S BODY has sustained red injuries. Meanwhile, your victim has been impotently trying to break your hold or attack the unbreakable monster in front of it. Within a few more turns, and more than half a page of red injuries to the entire body, the victim is dead, and smoke has gone from issuing to ERUPTING from the victim, as the body does not so much burn as vaporize from the intense heat. In seconds, there is nothing left but whatever metal gear your victim had left. You can then pick up the gear, only to have it likewise vaporize after a few turns.
This creature's intense heat makes extended combat against it impossible, it's fire breath renders long range combat extremely short-lived. Nigh-Invulnerable, it's very presence kills anything that tries to fight it without any attacks, this may very well be the ultimate monster.
I call it The Hellstone Titan.
Here's the code. Have Fun.
[INORGANIC:HELLSTONE]
[STATE_NAME_ADJ:ALL_SOLID:hellstone][DISPLAY_COLOR:0:0:1][TILE:176]
[ITEM_SYMBOL:'*']
[DEEP_SURFACE]
[DISPLAY_COLOR:0:0:1]
[MAT_FIXED_TEMP:60000]
[SOLID_DENSITY:200000]
[IMPACT_YIELD:4000000]
[IMPACT_FRACTURE:5000000]
[IMPACT_STRAIN_AT_YIELD:100]
[COMPRESSIVE_YIELD:4000000]
[COMPRESSIVE_FRACTURE:5000000]
[COMPRESSIVE_STRAIN_AT_YIELD:100]
[TENSILE_YIELD:4000000]
[TENSILE_FRACTURE:5000000]
[TENSILE_STRAIN_AT_YIELD:100]
[TORSION_YIELD:4000000]
[TORSION_FRACTURE:5000000]
[TORSION_STRAIN_AT_YIELD:100]
[SHEAR_YIELD:4000000]
[SHEAR_FRACTURE:5000000]
[SHEAR_STRAIN_AT_YIELD:100]
[BENDING_YIELD:4000000]
[BENDING_FRACTURE:5000000]
[BENDING_STRAIN_AT_YIELD:100]
[MAX_EDGE:1000]
[ITEMS_HARD]
[IS_STONE]
[UNDIGGABLE]
[CREATURE:HELLSTONE_TITAN]
[DESCRIPTION:A fiery monster hewn from stone at hell's heart.]
[NAME:hellstone titan:hellstone titans:hellstone titan]
[CASTE_NAME:hellstone titan:hellstone titans:hellstone titan]
[CREATURE_TILE:'C'][COLOR:0:0:0]
[MEGABEAST][DIFFICULTY:15] 11 or higher does not get assigned as adv mode quests
[ATTACK_TRIGGER:80:10000:100000]
[FANCIFUL]
[NOPAIN][EXTRAVISION][NOBREATHE][NOSTUN][NONAUSEA][NOEMOTION]
[NOTHOUGHT][NOEXERT]
[NO_DIZZINESS]
[NO_FEVERS]
[BUILDINGDESTROYER:2]
[LARGE_PREDATOR]
[NO_DRINK][NO_EAT][NO_SLEEP]
[CAN_DO_INTERACTION:MATERIAL_EMISSION]
[CDI:ADV_NAME:Breath fire]
[CDI:USAGE_HINT:ATTACK]
[CDI:BP_REQUIRED:BY_CATEGORY:MOUTH]
[CDI:FLOW:DRAGONFIRE]
[CDI:TARGET:C:LINE_OF_SIGHT]
[CDI:TARGET_RANGE:C:15]
[CDI:MAX_TARGET_NUMBER:C:1]
[CDI:WAIT_PERIOD:50]
[SPHERE:METALS]
[SPHERE:STRENGTH]
[SPHERE:WAR]
[CANOPENDOORS]
[NOT_BUTCHERABLE]
[BIOME:ANY_LAND]
[EQUIPS]
[NOFEAR]
[CAN_LEARN]
[CAN_SPEAK]
[HOMEOTHERM:60000]
[PREFSTRING:height]
[NOBONES]
[BODY:HUMANOID:2EYES:2EARS:NOSE:HUMANOID_JOINTS:5FINGERS:5TOES]
[NO_THOUGHT_CENTER_FOR_MOVEMENT]
[TISSUE:HELLSTONE]
[TISSUE_NAME:hellstone:hellstone]
[TISSUE_MATERIAL:INORGANIC:HELLSTONE]
[MUSCULAR]
[FUNCTIONAL]
[STRUCTURAL]
[RELATIVE_THICKNESS:1]
[CONNECTS]
[TISSUE_SHAPE:LAYER]
[TISSUE_LAYER:BY_CATEGORY:ALL:HELLSTONE]
[BODY_SIZE:0:0:20000000]
[BODY_APPEARANCE_MODIFIER:HEIGHT:90:95:98:100:102:105:110]
[BODY_APPEARANCE_MODIFIER:BROADNESS:90:95:98:100:102:105:110]
[ATTACK:PUNCH:BODYPART:BY_TYPE:GRASP]
[ATTACK_SKILL:GRASP_STRIKE]
[ATTACK_VERB:punch:punches]
[ATTACK_CONTACT_PERC:100]
[ATTACK_FLAG_WITH]
[ATTACK_PRIORITY:MAIN]
[ATTACK:KICK:BODYPART:BY_TYPE:STANCE]
[ATTACK_SKILL:STANCE_STRIKE]
[ATTACK_VERB:kick:kicks]
[ATTACK_CONTACT_PERC:100]
[ATTACK_FLAG_WITH]
[ATTACK_PRIORITY:SECOND]
[ITEMCORPSE:STATUE:NO_SUBTYPE:INORGANIC:HELLSTONE]
[ITEMCORPSE_QUALITY:5]
[DIURNAL]
[LAIR:SHRINE:100]