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: Rattling
Air: Clear and damp
Odors: Dank or moldy
Purpose: Laboratory used to conduct tests on strange minerals extracted from the mine
Current state: Used as a campsite
Contents: Monster (random creature)
Possible feature: Damp ceiling; Hair or fur; Leaves and twigs
Possible furnishings: Table, low; Screen; Rug (small or medium)
(Religious) Possible furnishings: Robes; Side chairs, Columns or pillars
(Mage) Possible furnishings: Whistle; Idol; Columns or pillars
Possible personal items: Basket; Case; Rope
Passages
Passage Width: 
10 ft. / Leads to: 
Continue straight 20ft.; passage ends in a door
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Chamber3rd Passage Width:
30 ft. / Leads to: 
Continue straight 20ft., door to the right, then an additional 10 ft. ahead4th Passage Width:
10 ft. / Leads to: Chamber
Doors
Door: Wooden / Leads to: 
Stairs (if not multi-level then reroll)
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden / Leads to: Chamber
Door 4: Stone, barred or locked / Leads to: Chamber
Door 5: Wooden / Leads to: 
Passage 20 ft. straight ahead
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: 
Rectangle, 50 x 80 ft.
Number of exits: 2
Exit locations: Wall opposite entrance / Wall opposite entrance /
Exit types: Door / Corridor, 10ft. long /
Description
Purpose: Lode where metal ore is mined (75 percent chance of being depleted)
Current state: Pool of water; chamber's original contents are water damaged
Contents: Monster (pet or allied creature) guarding treasure found in an illusion
Possible feature: Water, large puddle; Dust; Ashes
Possible furnishings: Arras or curtain; Pipe (large cask, 105 gallons); Stand
(Religious) Possible furnishings: Incense burner; Shrine, Holy or unholy symbol
(Mage) Possible furnishings: Font; Candles; Holy or unholy symbol
Possible personal items: Flagon, mug, or tankard; Ladle; Jug or pitcher
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 three levels to a passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Powder
Book, Scroll, or Tome: Recipe book or cookbook
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Hide from enemies
Personality: Cowardly; looking to surrender.
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: Blade barrier blocks passage
Random Traps
Trigger: Stepped on (floor, stairs)
Severity: Dangerous (DC 12, +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: Fresco
Effect: Increases, reduces, negates, or reverses gravity
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Their contribution stands as a beacon of hope for all adventurers!
