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 random). or choose:
Starting Area: 
Square, 20 x 20ft.; door on two walls, passage in third wall
Description
Noises: Tapping
Air: Clear and damp
Odors: Dank or moldy
Purpose: Guardroom
Current state: Pool of water; chamber's original contents are water damaged
Contents: Monster (pet or allied creature)
Possible feature: Rubble and dirt; Dripping blood; Javelin head, blunt
Possible furnishings: Wood billets; Cask (40 gallons); Cabinet
(Religious) Possible furnishings: Thurible; Throne, Lamp
(Mage) Possible furnishings: Holy or unholy symbol; Holy or unholy symbol; Pipes, musical
Possible personal items: Key; Jug or pitcher; Brush
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:
10 ft. / Leads to: 
Continue straight 20ft., side passage to the left, then an additional 10 ft. ahead3rd Passage Width:
10 ft. / 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., side passage to the left, then an additional 10 ft. ahead
Doors
Door: Wooden / Leads to: 
Chamber
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Portcullis / Leads to: 
Stairs (if not multi-level then reroll)
Door 4: Secret door, barred or locked / Leads to: Chamber
Door 5: Wooden / Leads to: Chamber
Door 6: Wooden / 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: 
Rectangle, 50 x 80 ft.
Number of exits: 1
Exit locations: Wall left of entrance /
Exit types: Corridor, 10ft. long /
Description
Purpose: Throne room, elaborately decorated
Current state: Ashes, contents mostly burned
Contents: Monster (random creature)
Possible feature: Cracks, ceiling; Spike, rusted; Dampness, wall
Possible furnishings: Chest, large; Keg (small barrel, 20 gallons); Table, long
(Religious) Possible furnishings: Columns or pillars; Columns or pillars, Altar
(Mage) Possible furnishings: Candlesticks; Holy or unholy symbol; Votive light
Possible personal items: Dish; Brush; Basket
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: Chimney up two levels to a passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Liquid, viscous
Book, Scroll, or Tome: Historical text
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Hide from enemies
Personality: Brave; stands its ground.
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: Cave-in
Random Traps
Trigger: Looked at (mural, arcane symbol)
Severity: Dangerous (DC 13, +7 to-hit)
Effect: Lightning bolt shoots from wall or object
| Damage | |
|---|---|
| Level 1-4: | 2d10 |
| Level 5-10: | 4d10 |
| Level 11-16: | 10d10 |
| Level 17-20: | 18d10 |
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Burning fire
Effect: Enlarges or reduces characters
Shout outs: Stacey, Dragons With Jetpacks, Kingyo Senpai, Warren Clarida, Luke P, David Schraff, Rachel Anderson, Serafina Moon, Trev909, Iofire, Caitlin W., Damon Carrington, Mario Pizzamiglio, Phil Mehl, Wesley Muncy, R., Vincent Drone, thea musing, Brian Nunziato, Robert Skadsem, Matt Yates, Elisa Martinez, Ryan Flagg, Jade Arrowood, Angelo Anderson, Syn21, Dave Walker, Jonathan Lekse, JollyGamer, Burlyfighter, Amanda Kettles, Lou Bliss, Sik Makoyi, Pythor Sen, Bryson Waits, Irate The Pirate, Mark L, Siren, AstroLass, Lizzie, Michael Hamilton, Vedie V, Mylon Schroder, Nathan, Robert Rich, Jess, Zee Livezey, Kevin, Kerry Melton, SallySparrow132, Millergendraft, Federica Frezza, Nick Soucy, Jeremiah Walker, Bryan Sheairs, chris wilson, Max Hops, Sarah Holland, Joshua David Maddox, Liz Fontain, Ray Bissonnette, Joe Dalby, Matt Price, Nicholas Zamora, ShortyMcgibble, Mr. Vinclair, mtnman1979@aol.com, KFB_Patreon, eric sun, Christopher Allbritton, Gundar Wez, Nahellion, That Video Editor Nic, bilbens baggo, Stuart, Brysen Packer, Maxwell Mayer, XMrMonkyx ., Jordan Brazeal, Kyle Clark, Jake Lane, Phillip P Torchia, Stefan Gottschalk's, Remora Jewel, Dalton Elliott, Connor, Daniel Edwards, Zealot23, Shane Andrews, CJMAXP, Lisa Tucker, KingHavok1217, Mx Charlie, Justin Snyder, Zachary Burgess-Hicks, Steve Rosenlund, Ezzela1891, John Nazario, Gordon Alexander Fallon, zachary gee
Their contribution stands as a beacon of hope for all adventurers!
