AI Sewer Map Generator
Describe the tunnels and get a finished, top-down sewer battle map. Channels, walkways, cisterns, grates and smugglers' hideouts, generated in seconds and ready for Roll20, Foundry VTT or Owlbear Rodeo.
Generate Your Sewer Map →3 free maps, no credit card.

About the AI Sewer Map Generator
Sooner or later every city campaign goes underground. The sewers are where the thieves' guild meets, where the cult hides and where the chase ends up, and they make good fights because the terrain does the work: narrow walkways, water nobody wants to fall into and a grate that is the only way out.
The Text to Tabletop AI sewer map generator turns a description into a finished tunnel section. Name the layout the encounter needs (two channels meeting at a cistern, a walkway with a plank bridge, a flooded chamber, a hidden door into a lair) and the generator paints it from directly above at battle scale.
Every map is locked to a straight-down view with no baked-in grid, so it lines up with the grid in your virtual tabletop. If a walkway is in the wrong place or a channel should be dry, select that area and regenerate only that part while the rest of the tunnels stay as they are.
Example Creations
Real results generated with our AI tool.

Ancient Stone Dungeon
Free download and prompt
"A multi-room underground dungeon carved from dark grey stone. A long central corridor connects four chambers of varying sizes. One room has a collapsed ceiling with rubble on the floor. Another has a shallow pool of water glowing faintly blue. Iron doors and archways connect the rooms. Scattered bones and broken furniture. Torches in wall sconces provide dim orange light. Top-down, grid-aligned, dungeon map style."

Bustling Market Square
Free download and prompt
"A lively medieval market square seen from above. Colorful canvas-topped merchant stalls arranged in rows selling goods. A stone fountain in the center of the square. Cobblestone streets with barrels, crates, and handcarts scattered around. Half-timbered buildings line all four sides of the square. A few trees provide shade. Busy daytime atmosphere. Top-down, grid-aligned, battle map style."

Shipwreck Coastal Cave
Free download and prompt
"A rocky coastal cave where a wrecked wooden ship has run aground. The hull is broken open, with debris and cargo crates scattered across the wet cave floor. Shallow tidal pools reflect the dim light entering from the cave mouth. Stalactites hang from the ceiling. Ropes and torn sails drape across the wreckage. The ocean is visible through the wide cave entrance. Top-down, grid-aligned, battle map style."

Arcane Library Tower
Free download and prompt
"The interior of a circular wizard's tower library seen from above. Bookshelves line the curved walls from floor to ceiling. A spiral staircase in the center connects to floors above and below. A large desk covered in scrolls, inkpots, and open books. Glowing orbs float near the ceiling providing blue-white light. Arcane symbols are etched into the stone floor forming a ritual circle. Potions and alchemical equipment on a side table. Top-down, grid-aligned, battle map style."
How It Works
Describe
Type your prompt describing the map.
Generate
Our AI processes your prompt instantly.
Refine
Adjust styles, grids, and variations.
Export
Download high-res formats for VTTs.
Use Cases
- Chases under the city: long channels and side tunnels for a pursuit that started on the street above
- Thieves' guild hideouts: a dry chamber off the main tunnel with crates, bunks and a secret way in
- Cult shrines: an old cistern turned into a place of worship, with candles on the walkways and something in the water
- Monster lairs: an otyugh pit, a nest of giant rats or a flooded chamber where something large waits below the surface
- Smuggling routes: a tunnel that runs from the docks to a warehouse cellar, with a boat tied up at the end
- Flooding traps: sluice gates and a rising water line that turn the walkways into the only safe ground
- Old city ruins: the sewer breaks into the buried streets of an older city built on the same spot
- Escape routes: a grate, a ladder shaft and a locked gate for players who need to get out fast
Frequently Asked Questions
Everything you need to know about the AI Sewer Map Generator.
What kinds of sewer maps can I make?
How do I make a sewer encounter more than a corridor?
Can I build a whole sewer network?
Will these maps work in Roll20, Foundry VTT and Owlbear Rodeo?
Is there a free trial, and what does it cost after that?
Do my tokens expire?
Can I change part of a sewer map after it is generated?
Generate Your First Sewer Map in 30 Seconds
Describe the tunnels under your city and let the generator handle the brickwork, the water and the grates.
Try Text to Tabletop →