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: Temple or shrine (Click to make permanent). or choose:
Starting Area: 
Square, 40 x 40 ft.; doors on three walls
Description
Noises: Footsteps to the side
Air: Clear and damp
Odors: Earthy
Purpose: Banquet room used for celebrations and holy days
Current state: Holes, floor partially collapsed
Contents: Monster (dominant inhabitant) with treasure
Possible feature: Water, trickle; Water, large puddle; Ashes
Possible furnishings: Buffet cabinet; Arras or curtain; Pillow
(Religious) Possible furnishings: Shrine; Idol, Font
(Mage) Possible furnishings: Columns or pillars; Shrine; Throne
Possible personal items: Basket; Fork; Cologne or perfume
Passages
Passage Width: 
5 ft. / Leads to: 
Continue straight 30ft., no doors or side passages
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.4th Passage Width:
40ft. wide, 20ft. high / Leads to: 
Chamber
Doors
Door: Wooden / Leads to: 
Passage extending 10ft., then T intersection extending 10ft. to the right and left
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden / Leads to: Chamber
Door 4: Iron / Leads to: 
Passage 20 ft. straight ahead
Door 5: Portcullis / Leads to: Passage extending 10ft., then T intersection extending 10ft. to the right and left
Door 6: Stone, 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, 40 x 50 ft.
Number of exits: 1
Exit locations: Wall right of entrance /
Exit types: Corridor, 10ft. long /
Description
Purpose: Storage holding mundane supplies
Current state: Used as a campsite
Contents: Monster (random creature) with treasure
Possible feature: Cracks, ceiling; Dried blood; Rags
Possible furnishings: Pipe (large cask, 105 gallons); Pallet; Bucket
(Religious) Possible furnishings: Offertory container; Cassocks, Votive light
(Mage) Possible furnishings: Columns or pillars; Holy or unholy symbol; Offertory container
Possible personal items: Twine; Shaker; Flask or jar
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: Powder
Book, Scroll, or Tome: Forged document
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Slay a rival
Random Hazards
Hazard: Green slime (Drops from above. DC 10 Dex, 1d10 acid damage, damage each round until removed. Nonmagical wood, metal weapon or tool used to remove is destroyed. Destroyed by sunlight, cure disease, cold, fire, or radiant)
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: Moved (cart, stone block)
Severity: Setback
Effect: Pendulum, either bladed or weighted as a maul, swings across the room or hall
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Sphere of magical energy
Effect: Casts polymorph on the characters (lasts 1 hour)
Shout outs: Stacey, Erin Gordon, KuroKimora, Bob the Skull, Cesartyrus, Christianna Schommer, Suzi Clive, Kerry Melton, Matt Hudson, Chris M, Lizette Marie, Sophia McDuffee, Insomic Panda, Laure Wouters, ItsWebby, Catherine Nelson, Cassandra Keyes, Simon Wegerstedt, Naomi B, Izzy, Robyn Smith, Bryant Bain, Trevor Atkinson, Lucy J, charles phillips, cgates, Darel Boyer, Rupert Borthwick, Michael Kraus, Ryan, Rhys Blythe, Anthony Lopez, Nick Soucy, Dustin Gatliff, Ellen Mitchell, Melanie Warga, Jeremiah Walker, Tim Hinkle, D. G. Speirs (The Tao of Maud), Randall Welker, Shyler Lance, Bryan Sheairs, matteo carbini, Max Hops, Kris Drummond, Sarah Holland, Joshua David Maddox, Standish Writes, Ray Bissonnette, Joe Farabaugh, Joe Dalby, Joline Tran, Matt Price, Yuki, ShortyMcgibble, Knot Sure, Alex Lavigne, mtnman1979@aol.com, Parker VanDerMeide, KFB_Patreon, BROisback, David Davidson, eric sun, Furbee Merchant, Jason Wenneman, Mike Kemmerer, Katherine Ekes Lewing, Matthew payne, Jacob Plummer, RiGarou, Rebecca Montelli, Gage Lahr, H, John Karels, wintersanctuary, Dylan Williams, Jakasaras 4che, Nahellion, Vanessa, Robert D O'Dell, Scarlett, Chris Francis, Alexander Garcia, Dale Wyble, Serena Verden, Alexander Griffiths, SnipsGTI, Brian Sousa, bilbens baggo, Stuart, IbKelek, Galygious, Nicole Patten, Clementine Turner, ted valen, T. Alexander, Tim Mason, Gannon Dubay, Thobek, George V Crain, Brian allbritton, Aaron Teupe, Moonstone, Matthew Newton, Celso R Garcia III, Felix Schmäche, Corwin Lum, John, Rob Garner, Matt Houghton, RRare, Rune Anjum, Brice Carpenter, Jordan Brazeal, Jake Lane, Adam Ruiz, Phillip P Torchia, Conor Quinn, Balanced Game Review, Jordan Fountain, Stefan Gottschalk's, Matthew Wood, Bartis Edmond Hawley-Wall, Christina Majchrzak, Zealot23, Nich Smith, Chris Mulvihill, Keaton Permenter, Shazear, Curran Vallejo, Leanna Orr, John Nazario, Gary, Topher Scott, Max Puplett
Their contribution stands as a beacon of hope for all adventurers!
