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 random). or choose:
Starting Area: 
Square, 20 x 20ft.; passage on each wall
Description
Noises: Footsteps to the side
Air: Clear and damp
Odors: Stale
Purpose: Barracks for miners
Current state: Used as a campsite
Contents: Monster (random creature) guarding treasure found in an illusion
Possible feature: Dripping blood; Bones; Rags
Possible furnishings: Throne; Arras or curtain; Statue
(Religious) Possible furnishings: Incense burner; Vestments, Robes
(Mage) Possible furnishings: Bells; Idol; Idol
Possible personal items: Yarn; Ladle; Shaker
Passages
Passage Width: 
20 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: Diagonal passage to the right for 30 ft (or straight then turn right).3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft.; passage ends in a door4th Passage Width:
20 ft. / 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: Secret door / Leads to: Chamber
Door 4: Wooden / Leads to: 
Passage 20 ft. straight ahead
Door 5: Secret door, barred or locked / Leads to: False door with trap
Door 6: Iron / Leads to: Chamber
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Square, 20 x 20 ft.
Number of exits: 2
Exit locations: Wall left of entrance / Wall right of entrance /
Exit types: Door / Corridor, 10ft. long /
Description
Purpose: Smithy for repairing damaged tools
Current state: Rubble, ceiling partially collapsed
Contents: Empty room with 
Stairs (if not multi-level then reroll)
Possible feature: Mold (common); Slime (harmless); Rubble and dirt
Possible furnishings: Loom; Couch; Pallet
(Religious) Possible furnishings: Idol; Altar, Font
(Mage) Possible furnishings: Bells; Vestments; Idol
Possible personal items: Soap; Tinderbox (with flint and steel); Pouch
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: Powder
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: Slay a rival
Personality: Braggart; makes a show of bravery but runs from danger.
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 17, +10 to-hit)
Effect: Vent releases gas: blinding, acidic, obscuring, paralyzing, poisonous, or sleep-inducing
| 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: Furniture
Effect: Increases, reduces, negates, or reverses gravity
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Their contribution stands as a beacon of hope for all adventurers!
