Doing masterwork mod now. I kept regenning and I haven't found a reanimating terrifying biome in the old one, but I did produce a monster of a pocket region for adventure mode that has some 20000ish titans, megabeasts and such spread out over a 1000 of each cave type or whatever the game would allow. While affecting nothing in Dwarf Fortress mode, adventure mode could be summed up as this, my last lair had 4 dragons, 3 cyclops, 4 bronze colossi and proceeded to come straight for me. Minotaurs in labyrinths cluster in 8-9 groups, I lose to them often enough because they rip me apart. The bronze colossus I couldn't kill or outrun unless I got swept into the river. Not sure if I am ready for adventure mode fun... though I did get 500+ kills on the near helpless humans, but seeing them respawn endlessly when you move off screen far enough did get old after awhile. I thought I could eliminate the populace and keep them gone except for babys. And oh yeah. Last thing, even modding my dwarf, 20000 mega beasts becomes 30,000 quickly due to the birthing and such. Funniest name for a male minotaur child was 'Galka the Rapid Climax' born in the 1st year (started year 2 for adventurer), I just started laughing because I played a Galka in FFXI.