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 permanent). or choose:
Starting Area: 
Square, 40 x 40 ft.; doors on three walls
Description
Noises: Rustling
Air: Clear and drafty
Odors: Sulfurous
Purpose: Sitting room for family and intimate guests
Current state: Pool of water; chamber's original contents are water damaged
Contents: Monster (random creature) guarding treasure found in a loose stone
Possible feature: Cobwebs; Guano; Wax blob (candle stub)
Possible furnishings: Table, long; Butt (huge cask, 125 gallons); Tub
(Religious) Possible furnishings: Votive light; Vestments, Idol
(Mage) Possible furnishings: Incense burner; Tripod; Lectern
Possible personal items: Ladle; Basket; Tinderbox (with flint and steel)
Passages
Passage Width: 
10 ft. / Leads to: Diagonal passage to the right for 30 ft (or straight then turn right).
Extra passages (if necessary):
2nd Passage Width:
20 ft. / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., door to the right, then an additional 10 ft. ahead4th 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: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Portcullis / Leads to: 
Chamber
Door 3: Wooden / Leads to: Chamber
Door 4: Wooden / Leads to: Chamber
Door 5: Wooden / Leads to: Chamber
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: 
Square, 50 x 50 ft.
Number of exits: 4
Exit locations: Wall opposite entrance / Same wall as entrance / Wall right of entrance / Wall left of entrance /
Exit types: Door / Corridor, 10ft. long / Corridor, 10ft. long / Door /
Description
Purpose: Study, including a writing desk
Current state: Stripped bare
Contents: Empty room with treasure found in a loose stone
Possible feature: Damp ceiling; Dripping blood; Ashes
Possible furnishings: Stool , high; Staff, normal; Cupboard
(Religious) Possible furnishings: Columns or pillars; Holy or unholy writings, Offertory container
(Mage) Possible furnishings: Tripod; Vestments; Idol
Possible personal items: Trivet or tripod; Awl; Quill
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 two levels to a passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Dust
Book, Scroll, or Tome: Magic tricks (not a spellbook)
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Seek an item in the dungeon
Personality: Fanatic; ready to die fighting.
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: Wall of force blocks passage
Random Traps
Trigger: Moved through (doorway, hallway)
Severity: Dangerous (DC 13, +7 to-hit)
Effect: Floor collapses or is an illusion
| 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: Furniture
Effect: Ages the first person to touch the object
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Their contribution stands as a beacon of hope for all adventurers!
