Random Dungeon Generator
Looking for a full map? Try the Dungeon Map Generator
Randomly generate parts of a dungeon on the fly, pieces are modular and fit together so you can even generate an entire dungeon this way. If you're generating from scratch, begin with a starting area and then add random doors and passages. Passages can connect to other passages, and should continue to be generated until they're all linked to doors, rooms, or dead-ends. Refresh to generate new things. You can also drag and drop pieces onto the grid map to build as you go.
Jump to a section:
- Dungeon Start
- Passages
- Doors
- Chamber (Rooms)
- Stairs
- Contents
- Monster
- Random Hazards
- Random Obstacles
- Random Traps
- Random Tricks
Dungeon Start
Dungeon Type: Stronghold (Click to make permanent). or choose:
Starting Area: 
Square, 40 x 40 ft.; doors on three walls
Noises: Scratching or scrabbling
Air: Clear and damp
Odors: Salty and wet
Purpose: Waiting room where lesser guests are held before receiving an audience
Current state: Furniture wrecked but still present
Contents: Monster (dominant inhabitant) with treasure
Possible feature: Sack, torn; Dripping blood; Leaves and twigs
Possible furnishings: Rushes; Quilt; Altar
(Religious) Possible furnishings: Idol; Screen, Rail
(Mage) Possible furnishings: Pipes, musical; Bells; Holy or unholy symbol
Possible personal items: Rope; Pan; Spoon
Passages
Passage Width: 
10 ft. / Leads to: 
Continue straight 20ft., door to the right, then an additional 10 ft. ahead
Extra passages (if necessary):
2nd Passage Width:
20 ft. / Leads to: 
Chamber3rd Passage Width:
5 ft. / Leads to: 
Continue straight 20ft., door to the left, then an additional 10 ft. ahead4th Passage Width:
20 ft. / Leads to: 
Continue straight 20ft., side passage to the left, then an additional 10 ft. ahead
Doors
Door: Wooden, barred or locked / Leads to: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Wooden / Leads to: Passage 20 ft. straight ahead
Door 3: Wooden / Leads to: 
Stairs (if not multi-level then reroll)
Door 4: Iron / Leads to: 
Passage extending 10ft., then T intersection extending 10ft. to the right and left
Door 5: Iron / Leads to: Passage 20 ft. straight ahead
Door 6: Portcullis, locked in place / Leads to: Passage 20 ft. straight ahead
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Trapezoid, roughly 40 x 60 ft.
Number of exits: 0
Exit locations:
Exit types:
Purpose: Stable
Current state: Holes, floor partially collapsed
Contents: Monster (pet or allied creature) guarding treasure
Possible feature: Dung; Dust; Leaves and twigs
Possible furnishings: Altar; Candelabrum; Tun (huge cask, 250 gallons)
(Religious) Possible furnishings: Tripod; Brazier, Brazier
(Mage) Possible furnishings: Stand; Idol; Idol
Possible personal items: Grater; Twine; Pan
Stairs
Stairs connect multiple floors of a dungeon. If your dungeon doesn't have multiple floors, then reroll the passage or door that spawned them.
Stair Type: Shaft (with or without elevator) up one level to a chamber and down one level to a chamber
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Crystals
Book, Scroll, or Tome: Text on astrology
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Find a sanctuary
Random Hazards
Hazard: Spiderwebs (DC 12 Dex or restrained. DC 12 Athletics or Acrobatics to escape. AC 10, 15 HP, fire vulnerability, immunity to bludgeoning / piercing / psychic)
Random Obstacles
Obstacles block or hamper progress and can affect more than one room.
Obstacle: Chasm 1d4 x 10 ft. wide and 2d6 x 10ft. deep, possibly connected to other levels of the dungeon
Random Traps
Trigger: Looked at (mural , arcane symbol)
Severity: Dangerous
Effect: Huge wheeled statue rolls down corridor
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Target dummy
Effect: Talks (normal speech, nonsense, poetry and rhymes, singing, spellcasting, or screaming)
Shout outs: Stacey, Chris St.Pierre, and Max Puplett.
Their contribution stands as a beacon of hope for all adventurers!
