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: Lair (Click to make random). or choose:
Starting Area: 
Rectangle, 80 x 20ft., with row of pillars down the middle; two passages leading from each long wall, doors on each short wall
Description
Noises: Footsteps behind
Air: Foggy or misty and cold
Odors: Stale
Purpose: Storage, mostly nonperishable goods
Current state: Furniture wrecked but still present
Contents: Monster (pet or allied creature) guarding treasure found in a container (stone containers)
Possible feature: Sword blade, broken; Ashes; Cobwebs
Possible furnishings: Fireplace and wood; Pipe (large cask, 105 gallons); Table, low
(Religious) Possible furnishings: Incense burner; Statue, Altar
(Mage) Possible furnishings: Stand; Lamp; Columns or pillars
Possible personal items: Key; Vase; Tinderbox (with flint and steel)
Passages
Passage Width: 
10 ft. / Leads to: 
Chamber
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns right and continues 10ft.3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., side passage to the right, then an additional 10 ft. ahead4th Passage Width:
10 ft. / Leads to: Continue straight 20ft., side passage to the right, then an additional 10 ft. ahead
Doors
Door: Secret door, barred or locked / Leads to: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Secret door / Leads to: Passage 20 ft. straight ahead
Door 3: Wooden / Leads to: Chamber
Door 4: Wooden / Leads to: 
Passage extending 10ft., then T intersection extending 10ft. to the right and left
Door 5: Wooden / Leads to: Passage 20 ft. straight ahead
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: 
Square, 40 x 40 ft.
Number of exits: 4
Exit locations: Wall right of entrance / Wall right of entrance / Wall opposite entrance / Wall right of entrance /
Exit types: Door / Corridor, 10ft. long / Corridor, 10ft. long / Corridor, 10ft. long /
Description
Purpose: Bedroom, for use by leaders
Current state: Furniture wrecked but still present
Contents: Monster (random creature)
Possible feature: Dripping blood; Cobwebs; Sack, torn
Possible furnishings: Firkin (small cask, 10 gallons); Chest, medium; Workbench
(Religious) Possible furnishings: Holy or unholy symbol; Pews, Candlesticks
(Mage) Possible furnishings: Vestments; Shrine; Throne
Possible personal items: Stopper; Dish; Yarn
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: Up to a dead end
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Cinders
Book, Scroll, or Tome: Diary
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Recover from a battle
Personality: Brave; stands its ground.
Random Hazards
Hazard: Brown mold (Frigid temperature. DC 12 Con, 4d10 cold damage, half on save. Immune to fire, causes it to expand. Destroyed by cold)
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: Moved (cart, stone block)
Severity: Dangerous (DC 13, +7 to-hit)
Effect: Fire shoots out from wall, floor, 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: Sphere of magical energy
Effect: Casts geas on the characters
Shout outs: Stacey, Adam Fowler, Amanda Kettles, Angelo Anderson, Appreciate Witch of Life, AstroLass, bilbens baggo, Brian Nunziato, Bryan Sheairs, Brysen Packer, Bryson Waits, Burlyfighter, Caitlin W., Christopher Allbritton, CJMAXP, Connor, Dalton Elliott, Damon Carrington, Daniel Edwards, David Schraff, Dragons With Jetpacks, Elisa Martinez, eric sun, Ezzela1891, Federica Frezza, Gordon Alexander Fallon, Gundar Wez, Iofire, Irate The Pirate, Jade Arrowood, Jake Lane, Jeremiah Walker, Jess, Joe Dalby, John Nazario, JollyGamer, Jonathan Lekse, Jordan Brazeal, Joshua David Maddox, Justin Snyder, Kerry Melton, Kevin, KFB_Patreon, KingHavok1217, Kingyo Senpai, Kyle Clark, Lisa Tucker, Liz Fontain, Lizzie, Lou Bliss, Luke P, Mario Pizzamiglio, Mark L, Matt Yates, Max Hops, Maxwell Mayer, Michael Hamilton, Millergendraft, mtnman1979@aol.com, Mx Charlie, Mylon Schroder, Nahellion, Nathan, Nicholas Zamora, Nick Soucy, Phil Mehl, Phillip P Torchia, Pythor Sen, R., Rachel Anderson, Ray Bissonnette, Remora Jewel, Robert Rich, Robert Skadsem, Ryan Flagg, SallySparrow132, Sarah Holland, Serafina Moon, Shane Andrews, ShortyMcgibble, Sik Makoyi, Siren, Stefan Gottschalk's, Steve Rosenlund, Stuart, Syn21, That Video Editor Nic, thea musing, Trev909, Vedie V, Vincent Drone, Warren Clarida, Wesley Muncy, XMrMonkyx ., Zachary Burgess-Hicks, zachary gee, Zealot23, Zee Livezey
Their contribution stands as a beacon of hope for all adventurers!
