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: Mine (Click to make permanent). or choose:
Starting Area: 
Square, 20 x 20ft.; door on two walls, passage in third wall
Noises: Thud
Air: Clear and damp
Odors: Dank or moldy
Purpose: Lode where metal ore is mined (75 percent chance of being depleted)
Current state: Pristine and in original state
Contents: Empty room with treasure
Possible feature: Rags; Bottle, broken; Dust
Possible furnishings: Pegs; Chair, plain; Couch
(Religious) Possible furnishings: Pews; Side chairs, Shrine
(Mage) Possible furnishings: Shrine; Tripod; Votive light
Possible personal items: Flask or jar; Scroll; Mirror
Passages
Passage Width: 
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Chamber3rd Passage Width:
40ft., with row of pillars down the middle / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door4th Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns right and continues 10ft.
Doors
Door: Wooden / Leads to: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden / Leads to: Chamber
Door 4: Wooden / Leads to: Passage 20 ft. straight ahead
Door 5: Secret door, barred or locked / Leads to: 
Passage extending 10ft., then T intersection extending 10ft. to the right and left
Door 6: Iron, barred or locked / Leads to: Chamber
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Rectangle, 50 x 80 ft.
Number of exits: 6
Exit locations: Wall opposite entrance / Wall left of entrance / Wall left of entrance / Wall right of entrance / Wall opposite entrance / Wall right of entrance /
Exit types: Door / Door / Door / Corridor, 10ft. long / Door / Corridor, 10ft. long /
Purpose: Barracks for miners
Current state: Furniture wrecked but still present
Contents: Random Obstacle
Possible feature: Slime (harmless); Straw; Dust
Possible furnishings: Table, long; Shrine; Armchair
(Religious) Possible furnishings: Tripod; Cloth, altar, Brazier
(Mage) Possible furnishings: Holy or unholy symbol; Candles; Gong
Possible personal items: Decanter; Thread; Soap
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: Down one level to a passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Spheres (metal, stone, or wood)
Book, Scroll, or Tome: Book of myths
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Conquer the dungeon
Random Hazards
Hazard: Yellow mold (On touch, eject sports DC 15 Con, 2d10 poison and poisoned for 1 minute. Take 1d10 each turn while poisoned, repeat saving throw each turn to end. Destroyed by sunlight or fire)
Random Obstacles
Obstacles block or hamper progress and can affect more than one room.
Obstacle: Poisonous gas (deals 1d6 poison damage per minute of exposure)
Random Traps
Trigger: Touched (doorknob, statue)
Severity: Setback
Effect: Door or other object is coated with contact poison
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Furniture
Effect: Prevents movement
Shout outs: Stacey, Chris St.Pierre, John Patrick Callahan Jr, Giwrgos Konto, and Max Puplett.
Their contribution stands as a beacon of hope for all adventurers!
