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 permanent). or choose:
Starting Area: 
Passage, 10 ft. wide; T intersection
Description
Noises: Murmuring
Air: Clear and drafty
Odors: Metallic
Purpose: Strong room or vault used to store ore for transport to the surface
Current state: Furniture wrecked but still present
Contents: Random Obstacle
Possible feature: Dust; Slime (harmless); Wax blob (candle stub)
Possible furnishings: Sack; Tub; Tun (huge cask, 250 gallons)
(Religious) Possible furnishings: Vestments; Offertory container, Kneeling bench
(Mage) Possible furnishings: Bells; Holy or unholy symbol; Altar
Possible personal items: Washcloth; Plate, platter, or saucer; Salve or unguent
Passages
Passage Width: 
40ft. wide, 20ft. high, gallery 10ft. above floor allows access to level above / Leads to: 
Chamber
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: Diagonal passage to the left for 30 ft (or straight then turn left)3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.4th Passage Width:
10 ft. / Leads to: 
Stairs (if not multi-level then reroll)
Doors
Door: Wooden, barred or locked / Leads to: Chamber
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden / Leads to: Diagonal (or turn) Passage 20 ft. to the right
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: Wooden / Leads to: Diagonal (or turn) Passage 20 ft. to the left
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Rectangle, 30 x 60 ft.
Number of exits: 1
Exit locations: Wall left of entrance /
Exit types: Door /
Description
Purpose: Strong room or vault used to store ore for transport to the surface
Current state: Used as a campsite
Contents: Monster (random creature)
Possible feature: Leaves and twigs; Fungi (common); Damp ceiling
Possible furnishings: Rug (small or medium); Screen; Chandelier
(Religious) Possible furnishings: Altar; Idol, Bells
(Mage) Possible furnishings: Altar; Gong; Paintings or frescoes
Possible personal items: Wig; Oil, fuel; 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: Down one level to a chamber
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Skin or hide
Book, Scroll, or Tome: Bestiary
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: Cowardly; looking to surrender.
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: Battering winds reduce speed by half, impose disadvantage on ranged attack rolls
Random Traps
Trigger: Looked at (mural, arcane symbol)
Severity: Dangerous (DC 12, +7 to-hit)
Effect: Glyph of warding
| 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: Painting
Effect: Talks (normal speech, nonsense, poetry and rhymes, singing, spellcasting, or screaming)
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Their contribution stands as a beacon of hope for all adventurers!
