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 random). or choose:
Starting Area: 
Square, 20 x 20ft.; door on two walls, passage on third wall, secret door on fourth wall
Description
Noises: Rustling
Air: Clear and damp
Odors: Dank or moldy
Purpose: Sitting room for family and intimate guests
Current state: Furniture wrecked but still present
Contents: Random Trap
Possible feature: Dampness, wall; Rubble and dirt; Ashes
Possible furnishings: Trunk; Hogshead (large cask, 65 gallons); Rug (small or medium)
(Religious) Possible furnishings: Idol; Cloth, altar, Columns or pillars
(Mage) Possible furnishings: Side chairs; Font; Font
Possible personal items: Book; Horn, drinking; Casket (small)
Passages
Passage Width: 
40ft., with pillars / Leads to: 
Chamber
Extra passages (if necessary):
2nd Passage Width:
5 ft. / Leads to: 
Continue straight 20ft., side passage to the left, then an additional 10 ft. ahead3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., side passage to the right, then an additional 10 ft. ahead4th Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door
Doors
Door: Wooden / Leads to: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Wooden / Leads to: Chamber
Door 3: Wooden / Leads to: Passage 20 ft. straight ahead
Door 4: Wooden / Leads to: Chamber
Door 5: Wooden / Leads to: Passage 20 ft. straight ahead
Door 6: Iron / 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: 
Square, 20 x 20 ft.
Number of exits: 4
Exit locations: Wall left of entrance / Wall left of entrance / Same wall as entrance / Wall opposite entrance /
Exit types: Door / Corridor, 10ft. long / Corridor, 10ft. long / Door /
Description
Purpose: Guardroom
Current state: Furniture wrecked but still present
Contents: Monster (pet or allied creature)
Possible feature: Cobwebs; Leaves and twigs; Dust
Possible furnishings: Pallet; Rug (small or medium); Box (large)
(Religious) Possible furnishings: Altar; Paintings or frescoes, Tripod
(Mage) Possible furnishings: Shrine; Incense burner; Statue
Possible personal items: Dish; Decanter; Razor
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: Up one level to a passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Ash
Book, Scroll, or Tome: Almanac
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Conquer the dungeon
Personality: Cowardly; looking to surrender.
Random Hazards
Hazard: Yellow mold (On touch, eject sports DC 15 Con, 2d10 poison and poisoned for 1 minute. Take 1d10 each turn while poisoned, repeat saving throw each turn to end. Destroyed by sunlight or fire)
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: Touched (doorknob, statue)
Severity: Deadly (DC 18, +9 to-hit)
Effect: Floor tiles are electrified
| 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: Sphere of magical energy
Effect: Ages the first person to touch the object
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Their contribution stands as a beacon of hope for all adventurers!
