Here is another flat volcano/river embark for .25.
It isn't hugely different from the last one but my experiences playing it (and the fact that this thread is too quiet) led me to posting it anyway.
It has plentiful minerals though the first few layers are rather spartan, but no flux so you will have to make do with iron until you access the better stuff. Sand is available on this map.
I found this to be very fps friendly compared to other maps I have played and it stayed between 90 & 100 (limit) until an ambush in year 3 which dropped me to 66 from then on. (perhaps an avoidable bug?)
The main reason I am posting this is because I have had some interesting encounters in the 5 years I have had this running with two visits from Dragons and two visits from Titans. Also have been getting ambushes and sieges from Goblins a plenty, probably because I built the fort and all it's furniture from the natural Obsidian deposits and pushed its value up prematurely.
There are only three Dwarf civilisations to choose from but The Lens of Waxing is a dead civ so make sure to choose one of the other two before embarking if you want to get the King etc.
Anyhoo... here's the world gen parameters for those who may be interested.
[WORLD_GEN]
[TITLE:Under Siege]
[SEED:1801464765]
[HISTORY_SEED:3952241407]
[NAME_SEED:3426430166]
[CREATURE_SEED:425235284]
[DIM:129:129]
[EMBARK_POINTS:1274]
[END_YEAR:200]
[BEAST_END_YEAR:200:80]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:1:400:401:401]
[RAINFALL:0:100:200:200]
[TEMPERATURE:25:75:200:200]
[DRAINAGE:0:100:200:200]
[VOLCANISM:0:100:200:200]
[SAVAGERY:0:100:200:200]
[ELEVATION_FREQUENCY:1:1:1:1:1:1]
[RAIN_FREQUENCY:1:1:1:1:1:1]
[DRAINAGE_FREQUENCY:1:1:1:1:1:1]
[TEMPERATURE_FREQUENCY:1:1:1:1:1:1]
[SAVAGERY_FREQUENCY:1:1:1:1:1:1]
[VOLCANISM_FREQUENCY:1:1:1:1:1:1]
[MINERAL_SCARCITY:200]
[MEGABEAST_CAP:70]
[SEMIMEGABEAST_CAP:60]
[TITAN_NUMBER:50]
[TITAN_ATTACK_TRIGGER:80:0:100000]
[DEMON_NUMBER:50]
[NIGHT_CREATURE_NUMBER:50]
[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:120]
[REGION_COUNTS:SWAMP:260:1:1]
[REGION_COUNTS:DESERT:260:1:1]
[REGION_COUNTS:FOREST:1040:3:3]
[REGION_COUNTS:MOUNTAINS:2080:2:2]
[REGION_COUNTS:OCEAN:2080:1:1]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:2080:3:3]
[REGION_COUNTS:HILLS:2080:3:3]
[EROSION_CYCLE_COUNT:250]
[RIVER_MINS:100:100]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:2750]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:0]
[CAVERN_LAYER_OPENNESS_MAX:100]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:100]
[CAVERN_LAYER_WATER_MIN:0]
[CAVERN_LAYER_WATER_MAX:100]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:15]
[LEVELS_ABOVE_LAYER_1:20]
[LEVELS_ABOVE_LAYER_2:10]
[LEVELS_ABOVE_LAYER_3:10]
[LEVELS_ABOVE_LAYER_4:10]
[LEVELS_ABOVE_LAYER_5:15]
[LEVELS_AT_BOTTOM:15]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:25]
[MOUNTAIN_CAVE_MIN:25]
[NON_MOUNTAIN_CAVE_MIN:50]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:15000]
[SITE_CAP:1040]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:2080:4160:2080]
[RAIN_RANGES:2080:4160:2080]
[DRAINAGE_RANGES:2080:4160:2080]
[SAVAGERY_RANGES:2080:4160:2080]
[VOLCANISM_RANGES:2080:4160:2080]
Here is the embark location.
Pregenerated world can be downloaded here.
http://dffd.wimbli.com/file.php?id=4572