Almost every time I generate a world, I'm getting results with 100+ Z levels below the surface.
My latest world I am embarked next to some *really* steep mountains.
The grass level (nice flat area half the embark) is at Z level 149.
The mountains rise to Z level 244.
And the lowest level of the map (ie, where hell is) goes from -26 to -21 (volcano on my map letting me see all the way down).
So there are 170 Z levels before I reach the bottom of the magma sea.
Now, this means I have tons of digging I *can* do, and tons of minerals/rock, but it also kills my computer even on a 3x3 embark. The mountains I can avoid (though kinda crazy).
Attaching the worldgen text for the world I'm using. If anyone knows how I can tweak it to (on average) get worlds with fewer super-low Z levels, I'd love the input.
[WORLD_GEN]
[TITLE:CUSTOMWORLD MEDIUM]
[DIM:129:129]
[EMBARK_POINTS:1500]
[END_YEAR:250]
[BEAST_END_YEAR:100:65]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:1:400:3200:3200]
[RAINFALL:15:100:800:800]
[TEMPERATURE:30:75:400:400]
[DRAINAGE:15:100:800:800]
[VOLCANISM:0:100:3200:3200]
[SAVAGERY:0:100:3200:3200]
[ELEVATION_FREQUENCY:1:0:4:5:4:2]
[RAIN_FREQUENCY:1:1:2:3:4:5]
[DRAINAGE_FREQUENCY:1:1:2:3:4:5]
[TEMPERATURE_FREQUENCY:1:1:2:3:3:2]
[SAVAGERY_FREQUENCY:1:5:1:5:1:12]
[VOLCANISM_FREQUENCY:1:10:1:1:3:10]
[MINERAL_SCARCITY:1500]
[MEGABEAST_CAP:22]
[SEMIMEGABEAST_CAP:50]
[TITAN_NUMBER:11]
[TITAN_ATTACK_TRIGGER:100:0:200000]
[DEMON_NUMBER:30]
[NIGHT_TROLL_NUMBER:15]
[BOGEYMAN_NUMBER:15]
[VAMPIRE_NUMBER:15]
[WEREBEAST_NUMBER:15]
[SECRET_NUMBER:30]
[REGIONAL_INTERACTION_NUMBER:30]
[DISTURBANCE_INTERACTION_NUMBER:30]
[EVIL_CLOUD_NUMBER:15]
[EVIL_RAIN_NUMBER:15]
[GOOD_SQ_COUNTS:25:251:503]
[EVIL_SQ_COUNTS:25:251:503]
[PEAK_NUMBER_MIN:12]
[PARTIAL_OCEAN_EDGE_MIN:1]
[COMPLETE_OCEAN_EDGE_MIN:0]
[VOLCANO_MIN:200]
[REGION_COUNTS:SWAMP:0:0:0]
[REGION_COUNTS:DESERT:0:0:0]
[REGION_COUNTS:FOREST:0:0:0]
[REGION_COUNTS:MOUNTAINS:0:0:0]
[REGION_COUNTS:OCEAN:0:0:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:0:0:0]
[REGION_COUNTS:HILLS:0:0:0]
[EROSION_CYCLE_COUNT:250]
[RIVER_MINS:150:150]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:33]
[CAVERN_LAYER_OPENNESS_MAX:100]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:67]
[CAVERN_LAYER_WATER_MIN:15]
[CAVERN_LAYER_WATER_MAX:85]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:10]
[LEVELS_ABOVE_LAYER_1:5]
[LEVELS_ABOVE_LAYER_2:1]
[LEVELS_ABOVE_LAYER_3:1]
[LEVELS_ABOVE_LAYER_4:1]
[LEVELS_ABOVE_LAYER_5:2]
[LEVELS_AT_BOTTOM:1]
[CAVE_MIN_SIZE:25]
[CAVE_MAX_SIZE:100]
[MOUNTAIN_CAVE_MIN:50]
[NON_MOUNTAIN_CAVE_MIN:100]
[ALL_CAVES_VISIBLE:1]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:15000]
[SITE_CAP:1040]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:0:0:0]
[RAIN_RANGES:0:0:0]
[DRAINAGE_RANGES:0:0:0]
[SAVAGERY_RANGES:0:0:0]
[VOLCANISM_RANGES:0:0:0]