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 permanent). or choose:
Starting Area: 
Square, 20 x 20ft.; passage on each wall
Description
Noises: Bellowing
Air: Clear and damp
Odors: Earthy
Purpose: Chapel where the lair's inhabitants worship
Current state: Holes, floor partially collapsed
Contents: Random Trap
Possible feature: Cracks, ceiling; Ashes; Fungi (common)
Possible furnishings: Charcoal; Pegs; Pallet
(Religious) Possible furnishings: Vestments; Font, Incense burner
(Mage) Possible furnishings: Brazier; Incense burner; Tripod
Possible personal items: Soap; Spoon; Razor
Passages
Passage Width: 
10 ft. / Leads to: Diagonal passage to the left for 30 ft (or straight then turn left)
Extra passages (if necessary):
2nd Passage Width:
20 ft. / Leads to: 
Chamber3rd 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, gallery 10ft. above floor allows access to level above / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door
Doors
Door: Stone / Leads to: False door with trap
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden, barred or locked / Leads to: 
Passage extending 10ft., then T intersection extending 10ft. to the right and left
Door 4: Stone / Leads to: Chamber
Door 5: Portcullis, locked in place / 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: 
Octagon, 40 x 40 ft.
Number of exits: 0
Exit locations:
Exit types:
Description
Purpose: Bedroom, for use by leaders
Current state: Rubble, ceiling partially collapsed
Contents: Monster (pet or allied creature)
Possible feature: Ashes; Slime (harmless); Fungi (common)
Possible furnishings: Staff, normal; Mat; Workbench
(Religious) Possible furnishings: Bells; Lamp, Stand
(Mage) Possible furnishings: Altar; Cloth, altar; Cassocks
Possible personal items: Bottle; Coffer; Needle(s)
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 to a dead end
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Grease
Book, Scroll, or Tome: Last will and testament
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: Greedy; wants treasure.
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: Looked at (mural, arcane symbol)
Severity: Deadly (DC 19, +10 to-hit)
Effect: Door or other object is coated with contact poison
| Damage | |
|---|---|
| Level 1-4: | 4d10 |
| Level 5-10: | 10d10 |
| Level 11-16: | 18d10 |
| Level 17-20: | 24d10 |
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Painting
Effect: Presents a puzzle or riddle
Shout outs: Stacey, Adam Fowler, 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, Appreciate Witch of Life, Steve Rosenlund, Ezzela1891, John Nazario, Gordon Alexander Fallon, zachary gee
Their contribution stands as a beacon of hope for all adventurers!
