Pustulent Swamps Open forested area with patches of swamps. Molds, slimes, and undead. Lots of poison. Living plants.
Gaol of the Heretics Deep prison-like dungeon. Lots of locked doors and barred walls. Rats, and other cave-dwellers. Humanoids and people. Some ghosts and undead.
Twilit Wood Forested cemeteries. Undead and nocturnal forest creatures.
Forgotten Dungeon Classic roguelike dungeon. Mixture of elementals, golems, undead, demons, etc.
Infernal Crypts Twisty caverns. Undead and demons.
Ascendence Keep Open, clean castle. Lots of classic mythical beasts. Humanoids.
Dragonmount Relatively spacious open out-door mountain area. Obviously, lots of dragons.
Citadel of the Ancients Symmetric castle. Ancients.
cavern, crypt, keep, dungeon, swamp, wood, tower, castle