Inspired by some topic about waterfalls I decided to make a worldgen parameter set that makes worlds with a crazy amouth of rivers. Turned out pretty well after some expirimentation with erosion, elevations, etc.
The eventual result:
- It makes 257x129 worlds, allowing it have a bit more variation in elevation.
- The maximum number of rivers, 800 of them. They tend to form about 4 majour rivers, which often reach the maximum width of 47 tiles.
- Neat waterfalls! Current record is 22 z-levels. See below for more.
- Oceans edges. No oceans in the middle because erosion takes them out for being too small. This is intentional, as oceans eat rivers.
- Tiny lakes! Mostly alongside mountains. Makes for some pretty nice mountainside fortresses. One even had a tine little island in the middle attached by 2 embark tiles to the land.
- Thin mountains of varying steepness, for plenty of mountainside fortress sites.
- Lots of forests, hills and wetlands, but at least a bit of the other terain types as well.
- A thin polar cap either south or north of the map. Kept it thin due to rivers responding weirdly to larger ones (as in, removing them. Even outside the frozen biomes)
- Havnt dont much with the underground. Just slightly increased openness and water.
- Plenty of caves, 60 in the mountains and 80 ouside them. Civilisations seem able to survive them for 1000 years, though the elves have a hard time. Most get wiped out early, and the ones that surive get picked on by the rest (harhar). So if you dont want your pointy eared friends all gone you might wanna check up on them after worldgen.
[WORLD_GEN]
[TITLE:Grim's Riverworld]
[DIM:257:129]
[EMBARK_POINTS:1274]
[END_YEAR:1050]
[BEAST_END_YEAR:50:26]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:65:400:3200:3200]
[RAINFALL:0:90:240:480]
[TEMPERATURE:0:160:40:100]
[DRAINAGE:0:83:360:360]
[VOLCANISM:25:100:900:450]
[SAVAGERY:0:100:600:600]
[ELEVATION_FREQUENCY:5:2:1:1:4:2]
[RAIN_FREQUENCY:4:2:0:1:3:6]
[DRAINAGE_FREQUENCY:4:7:2:1:3:6]
[TEMPERATURE_FREQUENCY:2:1:0:6:2:2]
[SAVAGERY_FREQUENCY:4:2:1:1:0:4]
[VOLCANISM_FREQUENCY:5:2:0:1:0:4]
[TITAN_NUMBER:350]
[TITAN_ATTACK_TRIGGER:50:0:100000]
[DEMON_NUMBER:128]
[GOOD_SQ_COUNTS:100:1600:0]
[EVIL_SQ_COUNTS:100:1200:3000]
[PEAK_NUMBER_MIN:120]
[PARTIAL_OCEAN_EDGE_MIN:0]
[COMPLETE_OCEAN_EDGE_MIN:4]
[VOLCANO_MIN:80]
[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:1]
[RIVER_MINS:400:800]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:0]
[CAVERN_LAYER_OPENNESS_MAX:90]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:75]
[CAVERN_LAYER_WATER_MIN:30]
[CAVERN_LAYER_WATER_MAX:100]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:25]
[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:5]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:200]
[MOUNTAIN_CAVE_MIN:60]
[NON_MOUNTAIN_CAVE_MIN:80]
[ALL_CAVES_VISIBLE:1]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:-1]
[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]
The 22-z-level waterfall got genned with [SEED:2687489832]. Its at the intersection of 2 majour rivers.
The stone types will probabaly turn out different.
There is something weird about that waterfall though. It has a stream fall into one majour river of 27 tiles wide, which then turns into stream-width of 4 tiles and falls into the other majour river 22 levels below. Kind of weird, but definetelly the most high-pressure waterfall I ever seen. Figured some might want to check it out. Just copy paste that seed tag into the worlgen parameters to gen that particular world.
Edit: currentely it has a weird problem causing large areas to have their river wiped out during generation. See the southeast of the example map. Im not sure why it does this, solutions would be appreciated.